FN Thomson Reuters Web of Science™
VR 1.0
PT J
AU Zakharov, LE
AF Zakharov, Leonid E.
TI Comment on "Wall forces produced during ITER disruptions" [Phys. Plasmas
17, 082505 (2010)]
SO PHYSICS OF PLASMAS
LA English
DT Editorial Material
C1 Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Zakharov, LE (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
NR 1
TC 9
Z9 9
U1 0
U2 3
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD DEC
PY 2010
VL 17
IS 12
AR 124703
DI 10.1063/1.3522759
PG 1
WC Physics, Fluids & Plasmas
SC Physics
GA 700UT
UT WOS:000285770500086
ER
PT J
AU Crease, RP
AF Crease, Robert P.
TI Critical Point Au revoir, kilogram
SO PHYSICS WORLD
LA English
DT Editorial Material
C1 [Crease, Robert P.] SUNY Stony Brook, Dept Philosophy, Stony Brook, NY 11790 USA.
[Crease, Robert P.] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Crease, RP (reprint author), SUNY Stony Brook, Dept Philosophy, Stony Brook, NY 11790 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-8585
J9 PHYS WORLD
JI Phys. World
PD DEC
PY 2010
VL 23
IS 12
BP 19
EP 19
PG 1
WC Physics, Multidisciplinary
SC Physics
GA 700AC
UT WOS:000285703500022
ER
PT J
AU Hanik, N
Gomez, S
Schueller, M
Orians, CM
Ferrieri, RA
AF Hanik, Nils
Gomez, Sara
Schueller, Michael
Orians, Colin M.
Ferrieri, Richard A.
TI Use of gaseous 13NH(3) administered to intact leaves of Nicotiana
tabacum to study changes in nitrogen utilization during defence
induction
SO PLANT CELL AND ENVIRONMENT
LA English
DT Article
DE amino acid synthesis; methyl jasmonate; plant defences; short-lived
radiotracers
ID INITIAL ORGANIC PRODUCTS; TRUNCATULA CELL-CULTURES; ONE-CARBON
METABOLISM; METHYL JASMONATE; FLUX CHARACTERISTICS; HERBIVORE ATTACK;
PLANT TOLERANCE; AMMONIUM UPTAKE; ROOT-NODULES; GLYCINE-MAX
AB Nitrogen-13 (t(1/2) 9.97 m), a radioactive isotope of nitrogen, offers unique opportunities to explore plant nitrogen utilization over short time periods. Here we describe a method for administering 13N as gaseous 13NH(3) to intact leaves of Nicotiana tabacum L. (cv Samsun), and measuring the labelled amino acids using radio high-performance liquid chromatography (HPLC) on tissue extract. We used this method to study the effects of defence induction on plant nitrogen utilization by applying treatments of methyl jasmonate (MeJA), a potent defence elicitor. MeJA caused a significant increase relative to controls in key [13N]amino acids, including serine, glycine and alanine by 4 h post-treatment, yet had no effect on 13NH(3) incorporation, a process that is primarily under the control of the glutamine synthatase/glutamate synthase pathway (GS/GOGAT) in cellular photorespiration. We suggest that the reconfiguration of nitrogen metabolism may reflect induction of non-photorespiratory sources of nitrogen to better serve the plant's defences.
C1 [Schueller, Michael; Ferrieri, Richard A.] Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA.
[Hanik, Nils] Johannes Gutenberg Univ Mainz, Fachbereich Chem, D-55099 Mainz, Germany.
[Gomez, Sara] Univ Rhode Isl, Dept Biol Sci, Kingston, RI 02881 USA.
[Orians, Colin M.] Tufts Univ, Dept Biol, Medford, MA 02155 USA.
RP Ferrieri, RA (reprint author), Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA.
EM rferrieri@bnl.gov
FU U.S. Department of Energy, Office of Biological and Environmental
Research [DE-AC02-98CH10886]; National Research Initiative of the USDA
National Institute of Food and Agriculture [2007-35302-18351]; Deutscher
Akademischer Austauschdienst (DAAD), Bonn
FX This research was supported in part by the U.S. Department of Energy,
Office of Biological and Environmental Research under contract
DE-AC02-98CH10886, in part by the National Research Initiative of the
USDA National Institute of Food and Agriculture, under grant
2007-35302-18351, and by Deutscher Akademischer Austauschdienst (DAAD),
Bonn, which supported N.H.
NR 51
TC 7
Z9 7
U1 0
U2 5
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0140-7791
EI 1365-3040
J9 PLANT CELL ENVIRON
JI Plant Cell Environ.
PD DEC
PY 2010
VL 33
IS 12
BP 2173
EP 2179
DI 10.1111/j.1365-3040.2010.02215.x
PG 7
WC Plant Sciences
SC Plant Sciences
GA 679MW
UT WOS:000284166500014
PM 20716065
ER
PT J
AU Vanholme, R
Ralph, J
Akiyama, T
Lu, FC
Pazo, JR
Kim, H
Christensen, JH
Van Reusel, B
Storme, V
De Rycke, R
Rohde, A
Morreel, K
Boerjan, W
AF Vanholme, Ruben
Ralph, John
Akiyama, Takuya
Lu, Fachuang
Pazo, Jorge Rencoret
Kim, Hoon
Christensen, Jorgen Holst
Van Reusel, Brecht
Storme, Veronique
De Rycke, Riet
Rohde, Antje
Morreel, Kris
Boerjan, Wout
TI Engineering traditional monolignols out of lignin by concomitant
up-regulation of F5H1 and down-regulation of COMT in Arabidopsis
SO PLANT JOURNAL
LA English
DT Article
DE cell wall; benzodioxane; NMR; phenolic profiling; monolignol; irx
ID CAFFEIC ACID 3-O-METHYLTRANSFERASE; O-METHYLTRANSFERASE ACTIVITY;
SECONDARY CELL-WALL; FERULATE 5-HYDROXYLASE; 5-HYDROXYCONIFERYL ALCOHOL;
TRANSGENIC ALFALFA; MUTANTS DEFICIENT; PLANT-GROWTH; S-LIGNIN; THALIANA
AB P>Lignin engineering is a promising strategy to optimize lignocellulosic plant biomass for use as a renewable feedstock for agro-industrial applications. Current efforts focus on engineering lignin with monomers that are not normally incorporated into wild-type lignins. Here we describe an Arabidopsis line in which the lignin is derived to a major extent from a non-traditional monomer. The combination of mutation in the gene encoding caffeic acid O-methyltransferase (comt) with over-expression of ferulate 5-hydroxylase under the control of the cinnamate 4-hydroxylase promoter (C4H:F5H1) resulted in plants with a unique lignin comprising almost 92% benzodioxane units. In addition to biosynthesis of this particular lignin, the comt C4H:F5H1 plants revealed massive shifts in phenolic metabolism compared to the wild type. The structures of 38 metabolites that accumulated in comt C4H:F51 plants were resolved by mass spectral analyses, and were shown to derive from 5-hydroxy-substituted phenylpropanoids. These metabolites probably originate from passive metabolism via existing biochemical routes normally used for 5-methoxylated and 5-unsubstituted phenylpropanoids and from active detoxification by hexosylation. Transcripts of the phenylpropanoid biosynthesis pathway were highly up-regulated in comt C4H:F5H1 plants, indicating feedback regulation within the pathway. To investigate the role of flavonoids in the abnormal growth of comt C4H:F5H1 plants, a mutation in a gene encoding chalcone synthase (chs) was crossed in. The resulting comt C4H:F5H1 chs plants showed partial restoration of growth. However, a causal connection between flavonoid deficiency and this restoration of growth was not demonstrated; instead, genetic interactions between phenylpropanoid and flavonoid biosynthesis could explain the partial restoration. These genetic interactions must be taken into account in future cell-wall engineering strategies.
C1 [Vanholme, Ruben; Christensen, Jorgen Holst; Van Reusel, Brecht; Storme, Veronique; De Rycke, Riet; Rohde, Antje; Morreel, Kris; Boerjan, Wout] Univ Ghent VIB, Dept Plant Syst Biol, B-9052 Ghent, Belgium.
[Vanholme, Ruben; Christensen, Jorgen Holst; Van Reusel, Brecht; Storme, Veronique; De Rycke, Riet; Rohde, Antje; Morreel, Kris; Boerjan, Wout] Univ Ghent, Dept Plant Biotechnol & Genet, B-9052 Ghent, Belgium.
[Ralph, John; Akiyama, Takuya; Lu, Fachuang; Pazo, Jorge Rencoret; Kim, Hoon] Univ Wisconsin, Dept Biochem, Madison, WI 53706 USA.
[Ralph, John; Akiyama, Takuya; Lu, Fachuang; Pazo, Jorge Rencoret; Kim, Hoon] Univ Wisconsin, Great Lakes Bioenergy Res Ctr, Madison, WI 53706 USA.
RP Boerjan, W (reprint author), Univ Ghent VIB, Dept Plant Syst Biol, B-9052 Ghent, Belgium.
EM wout.boerjan@psb.vib-ugent.be
RI RENCORET, JORGE/E-1747-2013;
OI RENCORET, JORGE/0000-0003-2728-7331; Boerjan, Wout/0000-0003-1495-510X
FU United States Department of Energy (DOE) [DE-AI02-00ER15067]; DOE Great
Lakes Bioenergy Research Center (DOE Office of Science) [BER
DE-FC02-07ER64494]; Research Foundation-Flanders [G.0352.05N]; European
Community [211982]; Global Climate and Energy Project (GCEP); Ghent
University [01MRB510W]; Agency for Innovation by Science and Technology
FX The authors thank Clint Chapple (Department of Biochemistry, Purdue
University, West Lafayette, IN) for kindly providing the C4H: F5H1
fah1-2 line, Bart Ivens and David Casini for practical assistance, and
Martine De Cock for help in preparing the manuscript. We gratefully
acknowledge partial funding through the United States Department of
Energy (DOE) Energy Biosciences program (grant number DE-AI02-00ER15067)
and the DOE Great Lakes Bioenergy Research Center (DOE Office of
Science, grant number BER DE-FC02-07ER64494) to J.R., the Research
Foundation-Flanders (grant number G.0352.05N), the European Community's
7th Framework Programme (FP7/2007) under grant agreement no. 211982
(RENEWALL), the Global Climate and Energy Project (GCEP) (grants to W.B.
for 'Towards New Degradable Lignin Types' and to J.R. for 'Efficient
Biomass Conversion: Delineating the Best Lignin Monomer Substitutes'),
and the Multidisciplinary Research Partnership 'Biotechnology for a
Sustainable Economy' (01MRB510W) of Ghent University. Some of the NMR
experiments on the Bruker DMX-500 cryoprobe system made use of the
National Magnetic Resonance Facility at Madison
(http://www.nmrfam.wisc.edu). R.V. is indebted to the Agency for
Innovation by Science and Technology for a pre-doctoral fellowship.
NR 52
TC 56
Z9 57
U1 2
U2 67
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0960-7412
J9 PLANT J
JI Plant J.
PD DEC
PY 2010
VL 64
IS 6
BP 885
EP 897
DI 10.1111/j.1365-313X.2010.04353.x
PG 13
WC Plant Sciences
SC Plant Sciences
GA 693ER
UT WOS:000285207900001
PM 20822504
ER
PT J
AU Nguyen, HT
Mishra, G
Whittle, E
Bevan, SA
Merlo, AO
Walsh, TA
Shanklin, J
AF Nguyen, Huu Tam
Mishra, Girish
Whittle, Edward
Bevan, Scott A.
Merlo, Ann Owens
Walsh, Terence A.
Shanklin, John
TI Metabolic Engineering of Seeds Can Achieve Levels of omega-7 Fatty Acids
Comparable with the Highest Levels Found in Natural Plant Sources
SO PLANT PHYSIOLOGY
LA English
DT Article
ID ACYL CARRIER PROTEIN; SUBSTRATE-SPECIFICITY; ARABIDOPSIS-THALIANA; ACP
THIOESTERASES; TRANSGENIC PLANTS; OIL; DESATURASE; PHASEOLIN; GENE; BOND
AB Plant oils containing omega-7 fatty acids (FAs; palmitoleic 16:1 Delta(9) and cis-vaccenic 18:1 Delta(11)) have potential as sustainable feedstocks for producing industrially important octene via metathesis chemistry. Engineering plants to produce seeds that accumulate high levels of any unusual FA has been an elusive goal. We achieved high levels of omega-7 FA accumulation by systematic metabolic engineering of Arabidopsis (Arabidopsis thaliana). A plastidial 16:0-ACP desaturase has been engineered to convert 16:0 to 16:1 Delta(9) with specificity >100-fold than that of naturally occurring paralogs, such as that from cat's claw vine (Doxantha unguis-cati). Expressing this engineered enzyme (Com25) in seeds increased omega-7 FA accumulation from <2% to 14%. Reducing competition for 16:0-ACP by down-regulating the beta-ketoacyl-ACP synthase II 16:0 elongase further increased accumulation of omega-7 FA to 56%. The level of 16:0 exiting the plastid without desaturation also increased to 21%. Coexpression of a pair of fungal 16:0 desaturases in the cytosol reduced the 16:0 level to 11% and increased omega-7 FA to as much as 71%, equivalent to levels found in Doxantha seeds.
C1 [Nguyen, Huu Tam; Mishra, Girish; Whittle, Edward; Shanklin, John] Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA.
[Bevan, Scott A.; Merlo, Ann Owens; Walsh, Terence A.] Dow AgroSci, Discovery Res, Indianapolis, IN 46268 USA.
RP Shanklin, J (reprint author), Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA.
EM shanklin@bnl.gov
RI Walsh, Terence/K-1863-2012
OI Walsh, Terence/0000-0003-2640-8189
FU Office of Basic Energy Sciences of the U.S. Department of Energy; Dow
Chemical Company; Dow AgroSciences
FX This work was supported by the Office of Basic Energy Sciences of the
U.S. Department of Energy, The Dow Chemical Company, and Dow
AgroSciences.
NR 34
TC 32
Z9 36
U1 2
U2 20
PU AMER SOC PLANT BIOLOGISTS
PI ROCKVILLE
PA 15501 MONONA DRIVE, ROCKVILLE, MD 20855 USA
SN 0032-0889
J9 PLANT PHYSIOL
JI Plant Physiol.
PD DEC
PY 2010
VL 154
IS 4
BP 1897
EP 1904
DI 10.1104/pp.110.165340
PG 8
WC Plant Sciences
SC Plant Sciences
GA 688FA
UT WOS:000284834000025
PM 20943853
ER
PT J
AU Chu, MS
Okabayashi, M
AF Chu, M. S.
Okabayashi, M.
TI Stabilization of the external kink and the resistive wall mode
SO PLASMA PHYSICS AND CONTROLLED FUSION
LA English
DT Review
ID REVERSED-FIELD PINCH; HIGH-BETA PLASMAS; MHD STABILITY CODE; DIII-D
PLASMAS; TOROIDAL-MOMENTUM DISSIPATION; ACTIVE FEEDBACK STABILIZATION;
ERROR-FIELD; D TOKAMAK; MAGNETOHYDRODYNAMIC MODES; HYDROMAGNETIC
STABILITY
AB The pursuit of steady-state economic production of thermonuclear fusion energy has led to research on the stabilization of the external kink and the resistive wall mode. Advances in both experiment and theory, together with improvements in diagnostics, heating and feedback methods have led to substantial and steady progress in the understanding and stabilization of these instabilities. Many of the theory and experimental techniques and results that have been developed are useful not only for the stabilization of the resistive wall mode. They can also be used to improve the general performance of fusion confinement devices. The conceptual foundations and experimental results on the stabilization of the external kink and the resistive wall mode are reviewed.
C1 [Chu, M. S.] Gen Atom Co, San Diego, CA 92186 USA.
[Okabayashi, M.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Chu, MS (reprint author), Gen Atom Co, POB 85608, San Diego, CA 92186 USA.
FU US Department of Energy [DE-FG03-95ER54309, DE-AC02-76CH03073]
FX This work was supported by the US Department of Energy under
DE-FG03-95ER54309 and DE-AC02-76CH03073. The authors would like to thank
the referee for constructive comments; Dr Raffi Nazikian for
encouragement, Drs R J LaHaye, Y K In, Y Q Liu, Raffi Nazikian, S A
Sabbagh and the referee for reading carefully through the manuscript.
They also acknowledge Dr S A Sabbagh for clarification of the
experimental results from NSTX. They would also like to thank their
colleagues Drs J Bialek, T Bolzonella, A M Garofalo, S C Guo, G L
Jackson, M Lanctot, G Matsunaga, G A Navratil, H Reimerdes, K C Shaing,
E J Strait and M Takechi for constructive comments.
NR 204
TC 107
Z9 107
U1 1
U2 20
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0741-3335
EI 1361-6587
J9 PLASMA PHYS CONTR F
JI Plasma Phys. Control. Fusion
PD DEC
PY 2010
VL 52
IS 12
AR 123001
DI 10.1088/0741-3335/52/12/123001
PN 1
PG 102
WC Physics, Fluids & Plasmas
SC Physics
GA 743YS
UT WOS:000289056900001
ER
PT J
AU Fasoli, A
Burckel, A
Federspiel, L
Furno, I
Gustafson, K
Iraji, D
Labit, B
Loizu, J
Plyushchev, G
Ricci, P
Theiler, C
Diallo, A
Mueller, SH
Podesta, M
Poli, F
AF Fasoli, A.
Burckel, A.
Federspiel, L.
Furno, I.
Gustafson, K.
Iraji, D.
Labit, B.
Loizu, J.
Plyushchev, G.
Ricci, P.
Theiler, C.
Diallo, A.
Mueller, S. H.
Podesta, M.
Poli, F.
TI Electrostatic instabilities, turbulence and fast ion interactions in the
TORPEX device
SO PLASMA PHYSICS AND CONTROLLED FUSION
LA English
DT Article; Proceedings Paper
CT 37th European-Physical-Society-Conference-on-Plasma-Physics
CY JUN 22-25, 2010
CL Univ Campus, Helix Arts Ctr, Dublin, IRELAND
HO Univ Campus, Helix Arts Ctr
ID EDGE TURBULENCE; PLASMA; TRANSPORT; FIELD; DYNAMICS; PROGRESS; HELIUM;
WAVES; MODE; BLOB
AB Electrostatic turbulence, related structures and their effect on particle, heat and toroidal momentum transport are investigated in TORPEX simple magnetized plasmas using high-resolution diagnostics, control parameters, linear fluid models and nonlinear numerical simulations. The nature of the dominant instabilities is controlled by the value of the vertical magnetic field, B(v), relative to that of the toroidal field, B(T). For B(v)/B(T) > 3%, only ideal interchange instabilities are observed. A critical pressure gradient to drive the interchange instability is experimentally identified. Interchange modes give rise to blobs, radially propagating filaments of enhanced plasma pressure. Blob velocities and sizes are obtained from electrostatic probe measurements using pattern recognition methods. The observed values span a wide range and are described by a single analytical expression, from the small blob size regime in which the blob velocity is limited by cross-field ion polarization currents, to the large blob size regime in which the limitation to the blob velocity comes from parallel currents to the sheath. As a first attempt at controlling the blob dynamical properties, limiter configurations with varying angles between field lines and the conducting surface of the limiter are explored. Mach probe measurements clearly demonstrate a link between toroidal flows and blobs. To complement probe data, a fast framing camera and amovable gas puffing system are installed. Density and light fluctuations show similar signatures of interchange activity. Further developments of optical diagnostics, including an image intensifier and laser-induced fluorescence, are under way. The effect of interchange turbulence on fast ion phase space dynamics is studied using movable fast ion source and detector in scenarios for which the development from linear waves into blobs is fully characterized. A theory validation project is conducted in parallel with TORPEX experiments, based on quantitative comparisons of observables that are defined in the same way in the data and in the output of numerical codes, including 2D and 3D local and global simulations.
C1 [Fasoli, A.; Burckel, A.; Federspiel, L.; Furno, I.; Gustafson, K.; Iraji, D.; Labit, B.; Loizu, J.; Plyushchev, G.; Ricci, P.; Theiler, C.] Ecole Polytech Fed Lausanne, Ctr Rech Phys Plasmas, Assoc Euratom Confederat Suisse, CH-1015 Lausanne, Switzerland.
[Diallo, A.; Podesta, M.] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
[Mueller, S. H.] Univ Calif San Diego, Energy Res Ctr, La Jolla, CA 92093 USA.
[Poli, F.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
RP Fasoli, A (reprint author), Ecole Polytech Fed Lausanne, Ctr Rech Phys Plasmas, Assoc Euratom Confederat Suisse, CH-1015 Lausanne, Switzerland.
OI Gustafson, Kyle/0000-0002-1903-9015; Theiler,
Christian/0000-0003-3926-1374
NR 58
TC 39
Z9 39
U1 2
U2 13
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0741-3335
J9 PLASMA PHYS CONTR F
JI Plasma Phys. Control. Fusion
PD DEC
PY 2010
VL 52
IS 12
AR 124020
DI 10.1088/0741-3335/52/12/124020
PN 2
PG 22
WC Physics, Fluids & Plasmas
SC Physics
GA 705ZX
UT WOS:000286181100021
ER
PT J
AU Terranova, D
Bonfiglio, D
Boozer, AH
Cooper, AW
Gobbin, M
Hirshman, SP
Lorenzini, R
Marrelli, L
Martines, E
Momo, B
Pomphrey, N
Predebon, I
Sanchez, R
Spizzo, G
Agostini, M
Alfier, A
Apolloni, L
Auriemma, F
Baruzzo, M
Bolzonella, T
Bonomo, F
Brombin, M
Canton, A
Cappello, S
Carraro, L
Cavazzana, R
Dal Bello, S
Delogu, R
De Masi, G
Drevlak, M
Fassina, A
Ferro, A
Franz, P
Gaio, E
Gazza, E
Giudicotti, L
Grando, L
Guo, SC
Innocente, P
Lopez-Bruna, D
Manduchi, G
Marchiori, G
Martin, P
Martini, S
Menmuir, S
Munaretto, S
Novello, L
Paccagnella, R
Pasqualotto, R
Pereverzev, GV
Piovan, R
Piovesan, P
Piron, L
Puiatti, ME
Recchia, M
Sattin, F
Scarin, P
Serianni, G
Soppelsa, A
Spagnolo, S
Spolaore, M
Taliercio, C
Valisa, M
Vianello, N
Wang, Z
Zamengo, A
Zaniol, B
Zanotto, L
Zanca, P
Zuin, M
AF Terranova, D.
Bonfiglio, D.
Boozer, A. H.
Cooper, A. W.
Gobbin, M.
Hirshman, S. P.
Lorenzini, R.
Marrelli, L.
Martines, E.
Momo, B.
Pomphrey, N.
Predebon, I.
Sanchez, R.
Spizzo, G.
Agostini, M.
Alfier, A.
Apolloni, L.
Auriemma, F.
Baruzzo, M.
Bolzonella, T.
Bonomo, F.
Brombin, M.
Canton, A.
Cappello, S.
Carraro, L.
Cavazzana, R.
Dal Bello, S.
Delogu, R.
De Masi, G.
Drevlak, M.
Fassina, A.
Ferro, A.
Franz, P.
Gaio, E.
Gazza, E.
Giudicotti, L.
Grando, L.
Guo, S. C.
Innocente, P.
Lopez-Bruna, D.
Manduchi, G.
Marchiori, G.
Martin, P.
Martini, S.
Menmuir, S.
Munaretto, S.
Novello, L.
Paccagnella, R.
Pasqualotto, R.
Pereverzev, G. V.
Piovan, R.
Piovesan, P.
Piron, L.
Puiatti, M. E.
Recchia, M.
Sattin, F.
Scarin, P.
Serianni, G.
Soppelsa, A.
Spagnolo, S.
Spolaore, M.
Taliercio, C.
Valisa, M.
Vianello, N.
Wang, Z.
Zamengo, A.
Zaniol, B.
Zanotto, L.
Zanca, P.
Zuin, M.
TI A 3D approach to equilibrium, stability and transport studies in RFX-mod
improved regimes
SO PLASMA PHYSICS AND CONTROLLED FUSION
LA English
DT Article; Proceedings Paper
CT 37th European-Physical-Society Conference on Plasma Physics
CY JUN 22-25, 2010
CL Dublin City Univ, Helix Arts Ctr, Dublin, IRELAND
SP European Phys Soc
HO Dublin City Univ, Helix Arts Ctr
ID REVERSED-FIELD PINCH; TOROIDAL PLASMAS; COEFFICIENTS; CONFINEMENT;
EVOLUTION
AB The full three-dimensional (3D) approach is now becoming an important issue for all magnetic confinement configurations. It is a necessary condition for the stellarator but also the tokamak and the reversed field pinch (RFP) now cannot be completely described in an axisymmetric framework. For the RFP the observation of self-sustained helical configurations with improved plasma performances require a better description in order to assess a new view on this configuration. In this new framework plasma configuration studies for RFX-mod have been considered both with tools developed for the RFP as well as considering codes originally developed for the stellarator and adapted to the RFP. These helical states are reached through a transition to a very low/reversed shear configuration leading to internal electron transport barriers. These states are interrupted by MHD reconnection events and the large T-e gradients at the barriers indicate that both current and pressure driven modes are to be considered. Furthermore the typically flat T-e profiles in the helical core have raised the issue of the role of electrostatic and electromagnetic turbulence in these reduced chaos regions, so that a stability analysis in the correct 3D geometry is required to address an optimization of the plasma setup. In this view the VMEC code proved to be an effective way to obtain helical equilibria to be studied in terms of stability and transport with a suite of well tested codes. In this work, the equilibrium reconstruction technique as well as the experimental evidence of 3D effects and their first interpretation in terms of stability and transport are presented using both RFP and stellarator tools.
C1 [Terranova, D.; Bonfiglio, D.; Gobbin, M.; Lorenzini, R.; Marrelli, L.; Martines, E.; Momo, B.; Predebon, I.; Spizzo, G.; Agostini, M.; Alfier, A.; Apolloni, L.; Auriemma, F.; Baruzzo, M.; Bolzonella, T.; Bonomo, F.; Brombin, M.; Canton, A.; Cappello, S.; Carraro, L.; Cavazzana, R.; Dal Bello, S.; Delogu, R.; De Masi, G.; Fassina, A.; Ferro, A.; Franz, P.; Gaio, E.; Gazza, E.; Giudicotti, L.; Grando, L.; Guo, S. C.; Innocente, P.; Manduchi, G.; Marchiori, G.; Martin, P.; Martini, S.; Menmuir, S.; Munaretto, S.; Novello, L.; Paccagnella, R.; Pasqualotto, R.; Piovan, R.; Piovesan, P.; Piron, L.; Puiatti, M. E.; Recchia, M.; Sattin, F.; Scarin, P.; Serianni, G.; Soppelsa, A.; Spagnolo, S.; Spolaore, M.; Taliercio, C.; Valisa, M.; Vianello, N.; Wang, Z.; Zamengo, A.; Zaniol, B.; Zanotto, L.; Zanca, P.; Zuin, M.] Assoc EURATOM ENEA Fus, Consorzio RFX, Padua, Italy.
[Boozer, A. H.] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY USA.
[Cooper, A. W.] Ecole Polytech Fed Lausanne, Assoc Euratom Confederat Suisse, Ctr Rech Phys Plasmas, CH-1015 Lausanne, Switzerland.
[Drevlak, M.] Max Planck Inst Plasma Phys, Greifswald, Germany.
[Hirshman, S. P.; Sanchez, R.] ORNL Fus Energy Div, Oak Ridge, TN USA.
[Pomphrey, N.; Lopez-Bruna, D.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
Asociac EURATOM CIEMAT, Lab Nacl Fus, Madrid, Spain.
[Pereverzev, G. V.] EURATOM, Max Planck Inst Plasmaphys, D-85748 Garching, Germany.
RP Terranova, D (reprint author), Assoc EURATOM ENEA Fus, Consorzio RFX, Padua, Italy.
EM david.terranova@igi.cnr.it
RI Innocente, Paolo/G-4381-2013; Marchiori, Giuseppe/I-6853-2013; zaniol,
barbara/L-7745-2013; Cappello, Susanna/H-9968-2013; Spizzo,
Gianluca/B-7075-2009; Vianello, Nicola/B-6323-2008; Lopez Bruna,
Daniel/L-6539-2014; Soppelsa, Anton/G-6971-2011; Pasqualotto,
Roberto/B-6676-2011; Martines, Emilio/B-1418-2009; Bonfiglio,
Daniele/I-9398-2012; Sattin, Fabio/B-5620-2013; Marrelli,
Lionello/G-4451-2013; Momo, Barbara/I-7686-2015; spagnolo,
silvia/E-9384-2017;
OI zaniol, barbara/0000-0001-9934-8370; Cappello,
Susanna/0000-0002-2022-1113; Spizzo, Gianluca/0000-0001-8586-2168;
Vianello, Nicola/0000-0003-4401-5346; Martines,
Emilio/0000-0002-4181-2959; Bonfiglio, Daniele/0000-0003-2638-317X;
Marrelli, Lionello/0000-0001-5370-080X; Momo,
Barbara/0000-0001-7760-8960; AGOSTINI, MATTEO/0000-0002-3823-1002;
Munaretto, Stefano/0000-0003-1465-0971
NR 50
TC 27
Z9 27
U1 2
U2 25
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0741-3335
J9 PLASMA PHYS CONTR F
JI Plasma Phys. Control. Fusion
PD DEC
PY 2010
VL 52
IS 12
AR 124023
DI 10.1088/0741-3335/52/12/124023
PN 2
PG 15
WC Physics, Fluids & Plasmas
SC Physics
GA 705ZX
UT WOS:000286181100024
ER
PT J
AU Wagner, F
Becoulet, A
Budny, R
Erckmann, V
Farina, D
Giruzzi, G
Kamada, Y
Kaye, A
Koechl, F
Lackner, K
Marushchenko, N
Murakami, M
Oikawa, T
Parail, V
Park, JM
Ramponi, G
Sauter, O
Stork, D
Thomas, PR
Tran, QM
Ward, D
Zohm, H
Zucca, C
AF Wagner, F.
Becoulet, A.
Budny, R.
Erckmann, V.
Farina, D.
Giruzzi, G.
Kamada, Y.
Kaye, A.
Koechl, F.
Lackner, K.
Marushchenko, N.
Murakami, M.
Oikawa, T.
Parail, V.
Park, J. M.
Ramponi, G.
Sauter, O.
Stork, D.
Thomas, P. R.
Tran, Q. M.
Ward, D.
Zohm, H.
Zucca, C.
TI On the heating mix of ITER
SO PLASMA PHYSICS AND CONTROLLED FUSION
LA English
DT Article; Proceedings Paper
CT 37th European-Physical-Society-Conference-on-Plasma-Physics
CY JUN 22-25, 2010
CL Univ Campus, Helix Arts Ctr, Dublin, IRELAND
HO Univ Campus, Helix Arts Ctr
ID CURRENT DRIVE; TRANSPORT; CONFINEMENT; PLASMA; BEAM; PARTICLE; SYSTEMS;
JT-60U; MODEL; EDGE
AB This paper considers the heating mix of ITER for the two main scenarios. Presently, 73 MW of absorbed power are foreseen in the mix 20/33/20 for ECH, NBI and ICH. Given a sufficient edge stability, Q = 10-the goal of scenario 2-can be reached with 40MW power irrespective of the heating method but depends sensitively inter alia on the H-mode pedestal temperature, the density profile shape and on the characteristics of impurity transport. ICH preferentially heats the ions and would contribute specifically with Delta Q < 1.5. The success of the Q = 5 steady-state scenario 4 with reduced current requires discharges with improved confinement necessitating weakly or strongly reversed shear, f(bs) > 0.5, and strong off-axis current drive (CD). The findings presented here are based on revised CD efficiencies gamma for ECCD and a detailed benchmark of several CD codes. With ECCD alone, the goals of scenario 4 can hardly be reached. Efficient off-axis CD is only possible with NBI. With beams, inductive discharges with f(ni) > 0.8 can be maintained for 3000 s. The conclusion of this study is that the present heating mix of ITER is appropriate. It provides the necessary actuators to induce in a flexible way the best possible scenarios. The development risks of NBI at 1 MeV can be reduced by operation at 0.85 MeV.
C1 [Wagner, F.; Erckmann, V.; Lackner, K.; Marushchenko, N.; Zohm, H.] EURATOM, Max Planck Inst Plasmaphys, Garching, Germany.
[Becoulet, A.; Giruzzi, G.] IRFM, CEA, F-13108 St Paul Les Durance, France.
[Budny, R.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
[Farina, D.; Ramponi, G.] EURATOM ENEA CNR Assoc, Ist Fis Plasma, I-20125 Milan, Italy.
[Kamada, Y.] Japan Atom Energy Res Inst, Naka Fus Res Estab, Naka, Ibaraki 31101, Japan.
[Koechl, F.] Assoc EURATOM OAW ATI, Atominst, Tu Wien, Austria.
[Murakami, M.; Park, J. M.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Oikawa, T.] EFDA Close Support Unit, D-85748 Garching, Germany.
[Parail, V.; Stork, D.; Ward, D.] Euratom CCFE Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England.
[Sauter, O.; Tran, Q. M.; Zucca, C.] Ecole Polytech Fed Lausanne, Assoc Euratom Confederat Suisse, Ctr Rech Phys Plasmas, CH-1015 Lausanne, Switzerland.
[Thomas, P. R.] FUSION FOR ENERGY, Barcelona 08019, Spain.
[Wagner, F.; Erckmann, V.; Lackner, K.; Marushchenko, N.; Zohm, H.] EURATOM, Max Planck Inst Plasmaphys, Greifswald, Germany.
RP Wagner, F (reprint author), EURATOM, Max Planck Inst Plasmaphys, Garching, Germany.
EM fritz.wagner@ipp.mpg.de
OI Zucca, Costanza/0000-0002-0701-5227; Marushchenko,
Nikolai/0000-0002-5110-9343
NR 47
TC 26
Z9 26
U1 1
U2 16
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0741-3335
J9 PLASMA PHYS CONTR F
JI Plasma Phys. Control. Fusion
PD DEC
PY 2010
VL 52
IS 12
AR 124044
DI 10.1088/0741-3335/52/12/124044
PN 2
PG 14
WC Physics, Fluids & Plasmas
SC Physics
GA 705ZX
UT WOS:000286181100045
ER
PT J
AU Zhang, J
Zhang, K
Feng, JF
Small, M
AF Zhang, Jie
Zhang, Kai
Feng, Jianfeng
Small, Michael
TI Rhythmic Dynamics and Synchronization via Dimensionality Reduction:
Application to Human Gait
SO PLOS COMPUTATIONAL BIOLOGY
LA English
DT Article
ID TIME-SERIES ANALYSIS; FRACTAL DYNAMICS; GRANGER CAUSALITY; COMPLEX
NETWORKS; STRIDE-INTERVAL; NYSTROM METHOD; HUMAN WALKING; SYSTEMS;
DISEASE; FMRI
AB Reliable characterization of locomotor dynamics of human walking is vital to understanding the neuromuscular control of human locomotion and disease diagnosis. However, the inherent oscillation and ubiquity of noise in such non-strictly periodic signals pose great challenges to current methodologies. To this end, we exploit the state-of-the-art technology in pattern recognition and, specifically, dimensionality reduction techniques, and propose to reconstruct and characterize the dynamics accurately on the cycle scale of the signal. This is achieved by deriving a low-dimensional representation of the cycles through global optimization, which effectively preserves the topology of the cycles that are embedded in a high-dimensional Euclidian space. Our approach demonstrates a clear advantage in capturing the intrinsic dynamics and probing the subtle synchronization patterns from uni/bivariate oscillatory signals over traditional methods. Application to human gait data for healthy subjects and diabetics reveals a significant difference in the dynamics of ankle movements and ankle-knee coordination, but not in knee movements. These results indicate that the impaired sensory feedback from the feet due to diabetes does not influence the knee movement in general, and that normal human walking is not critically dependent on the feedback from the peripheral nervous system.
C1 [Zhang, Jie; Feng, Jianfeng] Fudan Univ, Ctr Computat Syst Biol, Shanghai 200433, Peoples R China.
[Zhang, Jie; Small, Michael] Hong Kong Polytech Univ, Elect & Informat Engn Dept, Hong Kong, Hong Kong, Peoples R China.
[Zhang, Kai] Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA USA.
[Feng, Jianfeng] Univ Warwick, Dept Comp Sci & Math, Coventry CV4 7AL, W Midlands, England.
RP Zhang, J (reprint author), Fudan Univ, Ctr Computat Syst Biol, Shanghai 200433, Peoples R China.
EM jzhang080@gmail.com
RI Small, Michael/C-9807-2010;
OI Small, Michael/0000-0001-5378-1582; feng, jianfeng/0000-0002-9328-5732
FU Hong Kong Polytechnic University [G-YX0N]; Fudan University
FX JZ is supported by Hong Kong Polytechnic University(G-YX0N) and Fudan
University. The funders had no role in study design, data collection and
analysis, decision to publish, or preparation of the manuscript.
NR 66
TC 24
Z9 25
U1 1
U2 7
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA
SN 1553-734X
J9 PLOS COMPUT BIOL
JI PLoS Comput. Biol.
PD DEC
PY 2010
VL 6
IS 12
AR e1001033
DI 10.1371/journal.pcbi.1001033
PG 11
WC Biochemical Research Methods; Mathematical & Computational Biology
SC Biochemistry & Molecular Biology; Mathematical & Computational Biology
GA 698EG
UT WOS:000285574600021
PM 21187907
ER
PT J
AU Hoang, ML
Tan, FJ
Lai, DC
Celniker, SE
Hoskins, RA
Dunham, MJ
Zheng, YX
Koshland, D
AF Hoang, Margaret L.
Tan, Frederick J.
Lai, David C.
Celniker, Sue E.
Hoskins, Roger A.
Dunham, Maitreya J.
Zheng, Yixian
Koshland, Douglas
TI Competitive Repair by Naturally Dispersed Repetitive DNA during
Non-Allelic Homologous Recombination
SO PLOS GENETICS
LA English
DT Article
ID DOUBLE-STRAND BREAK; GENE CONVERSION EVENTS; SACCHAROMYCES-CEREVISIAE;
STRUCTURAL VARIATION; MITOTIC RECOMBINATION; MAMMALIAN-CELLS; HUMAN
GENOME; CHROMOSOMAL REARRANGEMENTS; SUBSTRATE LENGTH; YEAST GENOME
AB Genome rearrangements often result from non-allelic homologous recombination (NAHR) between repetitive DNA elements dispersed throughout the genome. Here we systematically analyze NAHR between Ty retrotransposons using a genome-wide approach that exploits unique features of Saccharomyces cerevisiae purebred and Saccharomyces cerevisiae/Saccharomyces bayanus hybrid diploids. We find that DNA double-strand breaks (DSBs) induce NAHR-dependent rearrangements using Ty elements located 12 to 48 kilobases distal to the break site. This break-distal recombination (BDR) occurs frequently, even when allelic recombination can repair the break using the homolog. Robust BDR-dependent NAHR demonstrates that sequences very distal to DSBs can effectively compete with proximal sequences for repair of the break. In addition, our analysis of NAHR partner choice between Ty repeats shows that intrachromosomal Ty partners are preferred despite the abundance of potential interchromosomal Ty partners that share higher sequence identity. This competitive advantage of intrachromosomal Tys results from the relative efficiencies of different NAHR repair pathways. Finally, NAHR generates deleterious rearrangements more frequently when DSBs occur outside rather than within a Ty repeat. These findings yield insights into mechanisms of repeat-mediated genome rearrangements associated with evolution and cancer.
C1 [Hoang, Margaret L.; Tan, Frederick J.; Zheng, Yixian; Koshland, Douglas] Johns Hopkins Univ, Sch Med, Howard Hughes Med Inst, Baltimore, MD 21205 USA.
[Hoang, Margaret L.] Carnegie Inst, Dept Embryol, Baltimore, MD USA.
[Hoang, Margaret L.] Johns Hopkins Univ, Dept Biol, Baltimore, MD 21218 USA.
[Lai, David C.] Ingenu Program, Baltimore Polytech Inst, Baltimore, MD USA.
[Celniker, Sue E.; Hoskins, Roger A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
[Dunham, Maitreya J.] Univ Washington, Dept Genome Sci, Seattle, WA 98195 USA.
RP Hoang, ML (reprint author), Johns Hopkins Univ, Sch Med, Howard Hughes Med Inst, Baltimore, MD 21205 USA.
EM koshland@berkeley.edu
OI Dunham, Maitreya/0000-0001-9944-2666
FU HHMI; NIH [HG00747]
FX This work was funded by HHMI to DK and YZ. Sequencing of chromosome III
Ty clusters was also supported by NIH grant HG00747 to Gary H. Karpen.
The funders had no role in study design, data collection and analysis,
decision to publish, or preparation of the manuscript.
NR 60
TC 26
Z9 26
U1 0
U2 3
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA
SN 1553-7390
J9 PLOS GENET
JI PLoS Genet.
PD DEC
PY 2010
VL 6
IS 12
AR e1001228
DI 10.1371/journal.pgen.1001228
PG 18
WC Genetics & Heredity
SC Genetics & Heredity
GA 698FM
UT WOS:000285578900006
PM 21151956
ER
PT J
AU Tseng, YC
Darling, SB
AF Tseng, Yu-Chih
Darling, Seth B.
TI Block Copolymer Nanostructures for Technology
SO POLYMERS
LA English
DT Review
DE block copolymer; lithography; photovoltaics
AB Nanostructures generated from block copolymer self-assembly enable a variety of potential technological applications. In this article we review recent work and the current status of two major emerging applications of block copolymer (BCP) nanostructures: lithography for microelectronics and photovoltaics. We review the progress in BCP lithography in relation to the requirements of the semiconductor technology roadmap. For photovoltaic applications, we review the current status of the quest to generate ideal nanostructures using BCPs and directions for future research.
C1 [Tseng, Yu-Chih; Darling, Seth B.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Tseng, YC (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM ytseng@anl.gov
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-AC02-06CH11357]
FX Use of the Center for Nanoscale Materials was supported by the U.S.
Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract No. DE-AC02-06CH11357.
NR 97
TC 62
Z9 62
U1 3
U2 51
PU MDPI AG
PI BASEL
PA POSTFACH, CH-4005 BASEL, SWITZERLAND
SN 2073-4360
J9 POLYMERS-BASEL
JI Polymers
PD DEC
PY 2010
VL 2
IS 4
BP 470
EP 489
DI 10.3390/polym2040470
PG 20
WC Polymer Science
SC Polymer Science
GA V27GH
UT WOS:000208601200008
ER
PT J
AU Myung, S
Wang, YR
Zhang, YHP
AF Myung, Suwan
Wang, Yiran
Zhang, Y. -H. Percival
TI Fructose-1,6-bisphosphatase from a hyper-thermophilic bacterium
Thermotoga maritima: Characterization, metabolite stability, and its
implications
SO PROCESS BIOCHEMISTRY
LA English
DT Article
DE Cell-free synthetic pathway biotransformation (SyPaB);
Fructose-1,6-bisphosphatase; In vitro metabolic engineering; Metabolite
degradation; Thermotoga maritima; Synthetic biology
ID INOSITOL MONOPHOSPHATASE; BIOCHEMICAL-CHARACTERIZATION;
HYPERTHERMOPHILIC ENZYMES; CELLULOSIC MATERIALS; ESCHERICHIA-COLI;
PURIFICATION; PROTEIN; ACID; GENE; THERMOSTABILITY
AB Fructose-1,6-bisphosphatase gene from a hyperthermophilic bacterium Thermotoga maritima was cloned, and the recombinant protein was produced in E. coli, purified, and characterized. The fructose-1,6-bisphosphatase (FBPase) with a molecular mass of ca. 28 kDa was purified from the fusion protein cellulose-binding module (CBM)-intein-FBPase by affinity adsorption on regenerated amorphous cellulose followed by intein self-cleavage. The substrate fructose 1,6-bisphosphate was not stable at high temperatures, especially at high pHs. The degradation constants of fructose 1,6-bisphosphate, glucose-6-phosphate, and fructose-6-phosphate were determined at different temperatures (37, 60, and 80 degrees C) and pH 7.5 or 9.0. The k(cat) and K-m values of FBPase were 8.57 s(-1) and 0.04 mM at 60 degrees C, as well as 58.7 s(-1) and 0.12 mM at 80 degrees C. This enzyme was very stable at its suboptimal temperatures, with half-life times of ca. 1330 and 55.6h at 60 and 80 degrees C, respectively. At 60 degrees C, this enzyme had an estimated total turn-over number of 20,500,000 (mol product/mol enzyme) and weight-based total turn-over umber of 192,000 (kg product/kg enzyme), respectively. These results indicated that this enzyme would be a stable building block for cell-free synthetic pathway biotransformation (SyPaB) that can implement complicated biochemical reactions. In order to obtain high-yield desired products, we suggest that over-addition or over-expression of the enzymes responsible for converting easily degraded metabolites should be important to prevent unnecessary metabolite loss for in vitro or in vivo synthetic pathway design. (C) 2010 Elsevier Ltd. All rights reserved.
C1 [Myung, Suwan; Wang, Yiran; Zhang, Y. -H. Percival] Virginia Polytech Inst & State Univ, Dept Biol Syst Engn, Blacksburg, VA 24061 USA.
[Myung, Suwan; Zhang, Y. -H. Percival] Virginia Polytech Inst & State Univ, ICTAS, Blacksburg, VA 24061 USA.
[Zhang, Y. -H. Percival] DOE BioEnergy Sci Ctr BESC, Oak Ridge, TN 37831 USA.
RP Zhang, YHP (reprint author), Virginia Polytech Inst & State Univ, Dept Biol Syst Engn, 210-A Seitz Hall, Blacksburg, VA 24061 USA.
EM ypzhang@vt.edu
RI Wang, Yi-Ran/C-4643-2013
OI Wang, Yi-Ran/0000-0002-4171-868X
FU Air Force Young Investigator Award; MURI [FA9550-08-1-0145]; Dupont
Young Faculty Award; DOE; USDA; ICTAS
FX This work was supported to YPZ mainly by the Air Force Young
Investigator Award and MURI to YPZ (FA9550-08-1-0145), as well as
partially by the Dupont Young Faculty Award, DOE-sponsored BioEnergy
Science Center, and USDA-sponsored Bioprocessing and Biodesign Center.
SM was partially supported by the ICTAS scholarship.
NR 36
TC 35
Z9 36
U1 1
U2 12
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1359-5113
EI 1873-3298
J9 PROCESS BIOCHEM
JI Process Biochem.
PD DEC
PY 2010
VL 45
IS 12
BP 1882
EP 1887
DI 10.1016/j.procbio.2010.03.017
PG 6
WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
Engineering, Chemical
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
Engineering
GA 694US
UT WOS:000285325100007
ER
PT J
AU Kessler, R
Bassett, B
Belov, P
Bhatnagar, V
Campbell, H
Conley, A
Frieman, JA
Glazov, A
Gonzalez-Gaitan, S
Hlozek, R
Jha, S
Kuhlmann, S
Kunz, M
Lampeitl, H
Mahabal, A
Newling, J
Nichol, RC
Parkinson, D
Philip, NS
Poznanski, D
Richards, JW
Rodney, SA
Sako, M
Schneider, DP
Smith, M
Stritzinger, M
Varughese, M
AF Kessler, Richard
Bassett, Bruce
Belov, Pavel
Bhatnagar, Vasudha
Campbell, Heather
Conley, Alex
Frieman, Joshua A.
Glazov, Alexandre
Gonzalez-Gaitan, Santiago
Hlozek, Renee
Jha, Saurabh
Kuhlmann, Stephen
Kunz, Martin
Lampeitl, Hubert
Mahabal, Ashish
Newling, James
Nichol, Robert C.
Parkinson, David
Philip, Ninan Sajeeth
Poznanski, Dovi
Richards, Joseph W.
Rodney, Steven A.
Sako, Masao
Schneider, Donald P.
Smith, Mathew
Stritzinger, Maximilian
Varughese, Melvin
TI Results from the Supernova Photometric Classification Challenge
SO PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
LA English
DT Article
ID DIGITAL SKY SURVEY; HUBBLE-SPACE-TELESCOPE; II-P SUPERNOVAE; IA
SUPERNOVAE; LEGACY SURVEY; HIGH-REDSHIFT; OBSERVATIONAL CONSTRAINTS;
COSMOLOGICAL PARAMETERS; DARK ENERGY; DEEP FIELD
AB We report results from the Supernova Photometric Classification Challenge (SNPhotCC), a publicly released mix of simulated supernovae (SNe), with types (Ia, Ibc, and II) selected in proportion to their expected rates. The simulation was realized in the griz filters of the Dark Energy Survey (DES) with realistic observing conditions (sky noise, point-spread function, and atmospheric transparency) based on years of recorded conditions at the DES site. Simulations of non-Ia-type SNe are based on spectroscopically confirmed light curves that include unpublished non-Ia samples donated from the Carnegie Supernova Project (CSP), the Supernova Legacy Survey (SNLS), and the Sloan Digital Sky Survey-II (SDSS-II). A spectroscopically confirmed subset was provided for training. We challenged scientists to run their classification algorithms and report a type and photo-z for each SN. Participants from 10 groups contributed 13 entries for the sample that included a host-galaxy photo-z for each SN and nine entries for the sample that had no redshift information. Several different classification strategies resulted in similar performance, and for all entries the performance was significantly better for the training subset than for the unconfirmed sample. For the spectroscopically unconfirmed subset, the entry with the highest average figure of merit for classifying SNe Ia has an efficiency of 0.96 and an SN Ia purity of 0.79. As a public resource for the future development of photometric SN classification and photo-z estimators, we have released updated simulations with improvements based on our experience from the SNPhotCC, added samples corresponding to the Large Synoptic Survey Telescope (LSST) and the SDSS-II, and provided the answer keys so that developers can evaluate their own analysis.
C1 [Kessler, Richard; Frieman, Joshua A.] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
[Kessler, Richard; Frieman, Joshua A.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[Smith, Mathew] Univ Cape Town, Dept Math & Appl Math, ACGC, ZA-7701 Rondebosch, South Africa.
[Bassett, Bruce] S African Astron Observ, ZA-7935 Cape Town, South Africa.
[Bassett, Bruce] African Inst Math Sci, ZA-7945 Muizenberg, South Africa.
[Belov, Pavel; Glazov, Alexandre] Deutsch Elektronensynchrotron DESY, D-22607 Hamburg, Germany.
[Bhatnagar, Vasudha] Univ Delhi, Dept Comp Sci, Delhi 110007, India.
[Campbell, Heather; Lampeitl, Hubert; Nichol, Robert C.] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England.
[Conley, Alex] Univ Colorado, Ctr Astrophys & Space Astron, Boulder, CO 80309 USA.
[Frieman, Joshua A.] Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA.
[Gonzalez-Gaitan, Santiago] Univ Toronto, Dept Astron & Astrophys, Toronto, ON M5S 3H4, Canada.
[Hlozek, Renee] Univ Oxford, Dept Astrophys, Oxford OX1 3RH, England.
[Jha, Saurabh] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA.
[Kuhlmann, Stephen] Argonne Natl Lab, Lemont, IL 60437 USA.
[Kunz, Martin] Univ Geneva, Dept Phys Theor, CH-1211 Geneva, Switzerland.
[Mahabal, Ashish] CALTECH, Pasadena, CA 91125 USA.
[Parkinson, David] Univ Sussex, Ctr Astron, Brighton BN1 9QH, E Sussex, England.
[Philip, Ninan Sajeeth] St Thomas Coll, Dept Phys, Kozhencheri 689641, Kerala, India.
[Poznanski, Dovi] Univ Calif Berkeley, Lawrence Berkeley Lab, Computat Cosmol Ctr, Div Comp Sci, Berkeley, CA 94720 USA.
[Poznanski, Dovi; Richards, Joseph W.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA.
[Richards, Joseph W.] Univ Calif Berkeley, Dept Stat, Berkeley, CA 94720 USA.
[Rodney, Steven A.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA.
[Sako, Masao] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA.
[Schneider, Donald P.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA.
[Stritzinger, Maximilian] Las Campanas Observ, Carnegie Observ, La Serena, Chile.
[Stritzinger, Maximilian] Univ Copenhagen, Dark Cosmol Ctr, Niels Bohr Inst, DK-2100 Copenhagen O, Denmark.
[Stritzinger, Maximilian] Stockholm Univ, Dept Astron, Oskar Klein Ctr, S-10691 Stockholm, Sweden.
[Varughese, Melvin] Univ Cape Town, Dept Stat Sci, ZA-7701 Rondebosch, South Africa.
RP Kessler, R (reprint author), Univ Chicago, Dept Astron & Astrophys, 5640 S Ellis Ave, Chicago, IL 60637 USA.
RI Parkinson, David/A-8647-2011; Varughese, Melvin/C-7730-2013; Parkinson,
David/E-1183-2013; Belov, Pavel/N-2871-2015;
OI Varughese, Melvin/0000-0002-5312-1469; Parkinson,
David/0000-0002-7464-2351; Belov, Pavel/0000-0002-4004-7001; Sajeeth
Philip, Ninan/0000-0002-1243-4258
FU Alfred P. Sloan Foundation; National Science Foundation [AST-0306969];
US Department of Energy; National Aeronautics and Space Administration;
Japanese Monbukagakusho; Max Planck Society; Higher Education Funding
Council for England
FX We are grateful to the Carnegie Supernova Project (CSP), Sloan Digital
Sky Survey-II (SDSS-II), and Supernova Legacy Survey collaborations for
providing unpublished spectroscopically confirmed non-Ia light curves
that are critical to this work. Funding for the creation and
distribution of the SDSS and SDSS-II has been provided by the Alfred P.
Sloan Foundation, the participating institutions, the National Science
Foundation, the US Department of Energy, the National Aeronautics and
Space Administration, the Japanese Monbukagakusho, the Max Planck
Society, and the Higher Education Funding Council for England. The CSP
has been supported by the National Science Foundation under grant
AST-0306969.
NR 53
TC 47
Z9 47
U1 0
U2 2
PU UNIV CHICAGO PRESS
PI CHICAGO
PA 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA
SN 0004-6280
J9 PUBL ASTRON SOC PAC
JI Publ. Astron. Soc. Pac.
PD DEC
PY 2010
VL 122
IS 898
BP 1415
EP 1431
DI 10.1086/657607
PG 17
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 694XN
UT WOS:000285335300002
ER
PT J
AU Kirk, BL
AF Kirk, B. L.
TI Overview of Monte Carlo radiation transport codes
SO RADIATION MEASUREMENTS
LA English
DT Article; Proceedings Paper
CT 11th Neutron and Ion Dosimetry Symposium (NEUDOS-11)
CY OCT 12-16, 2009
CL Cape Town, SOUTH AFRICA
SP European Radiation Dosimetry Grp (EURADOS)
DE Neutron transport; Monte Carlo; Radiation transport
AB The Radiation Safety Information Computational Center (RSICC) is the designated central repository of the United States Department of Energy (DOE) for nuclear software in radiation transport, safety, and shielding. Since the center was established in the early 60's, there have been several Monte Carlo (MC) particle transport computer codes contributed by scientists from various countries. An overview of the neutron transport computer codes in the RSICC collection is presented. (C) 2010 Elsevier Ltd. All rights reserved.
C1 Oak Ridge Natl Lab, RSICC, Oak Ridge, TN 37831 USA.
RP Kirk, BL (reprint author), Oak Ridge Natl Lab, RSICC, POB 2008, Oak Ridge, TN 37831 USA.
EM kirkbl@ornl.gov
NR 14
TC 3
Z9 4
U1 1
U2 4
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1350-4487
J9 RADIAT MEAS
JI Radiat. Meas.
PD DEC
PY 2010
VL 45
IS 10
SI SI
BP 1318
EP 1322
DI 10.1016/j.radmeas.2010.05.037
PG 5
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 708FZ
UT WOS:000286349000057
ER
PT J
AU Kroc, TK
AF Kroc, T. K.
TI Preliminary investigations of Monte Carlo simulations of neutron energy
and let spectra for fast neutron therapy facilities
SO RADIATION MEASUREMENTS
LA English
DT Article; Proceedings Paper
CT 11th Neutron and Ion Dosimetry Symposium (NEUDOS-11)
CY OCT 12-16, 2009
CL Cape Town, SOUTH AFRICA
SP European Radiation Dosimetry Grp (EURADOS)
DE Neutron therapy; Spectra; LET
AB No fast neutron therapy facility has been built with optimized beam quality based on a thorough understanding of the neutron spectrum and its resulting biological effectiveness. A study has been initiated to provide the information necessary for such an optimization. Monte Carlo studies will be used to simulate neutron energy spectra and LET spectra. These studies will be bench-marked with data taken at existing fast neutron therapy facilities. Results will also be compared with radiobiological studies to further support beam quality optimization. These simulations, anchored by this data, will then be used to determine what parameters might be optimized to take full advantage of the unique LET properties of fast neutron beams.
This paper will present preliminary work in generating energy and LET spectra for the Fermilab fast neutron therapy facility. (C) 2010 Elsevier Ltd. All rights reserved.
C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Kroc, TK (reprint author), Fermilab Natl Accelerator Lab, Mail Stop 301,Kirk & Wilson St, Batavia, IL 60510 USA.
EM kroc@fnal.gov
NR 5
TC 1
Z9 1
U1 1
U2 1
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1350-4487
J9 RADIAT MEAS
JI Radiat. Meas.
PD DEC
PY 2010
VL 45
IS 10
SI SI
BP 1334
EP 1337
DI 10.1016/j.radmeas.2010.05.005
PG 4
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 708FZ
UT WOS:000286349000060
ER
PT J
AU Kane, MC
Lascola, RJ
Clark, EA
AF Kane, Marie C.
Lascola, Robert J.
Clark, Elliot A.
TI Investigation on the effects of beta and gamma irradiation on conducting
polymers for sensor applications
SO RADIATION PHYSICS AND CHEMISTRY
LA English
DT Article
DE Conductive polymer; Sensors; Irradiation; Polyaniline; Polythiophene
ID ELECTRICAL-CONDUCTIVITY; POLYANILINE; RADIATION; DEGRADATION; RAMAN;
ACID
AB Two conductive polymers were evaluated to be the active materials in a sensor device for the detection of beta radiation. This was accomplished by characterizing the changes in conductivity of electrically conducting polymer films caused by exposure to tritium gas for varying lengths of time. The behavior of these materials when exposed to gamma radiation was also studied to gain further insight into the mechanism of conductivity degradation by ionizing radiation. Two types of conductive polymer, polyaniline (PANi) and poly(3,4-ethylenedioxythiophene) (PEDOT), were chosen as candidate materials for their widespread commercial use. The change of surface resistance (conductivity) of PANi and PEDOT films when exposed to gamma radiation in both air and deuterium environments was evaluated as well as tritium exposures in 10(4) and 10(5) Pa gas. Raman and absorbance spectra of gamma irradiated samples were obtained to determine the mechanism of conductivity degradation in both polymers. Post-irradiation gas analysis of the samples contained in deuterium revealed very little (or no) hydrogen in the containment vessel, indicating that hydrogen-deuterium isotopic exchange was not responsible for the decrease in surface conductivity due to gamma exposure. The effects of irradiation-induced oxidation were also studied for both conductive polymers during gamma irradiation. It was concluded that chain scission via free radical formation and chain cross-linking are most likely the two dominant mechanisms for conductivity change and not de-protonation of the polymer. Published by Elsevier Ltd.
C1 [Kane, Marie C.] Sandia Natl Labs, Livermore, CA 94550 USA.
[Kane, Marie C.; Lascola, Robert J.; Clark, Elliot A.] Savannah River Natl Lab, Aiken, SC 29808 USA.
RP Kane, MC (reprint author), Sandia Natl Labs, POB 969,MS 9403, Livermore, CA 94550 USA.
EM mkane@sandia.gov
OI Lascola, Robert/0000-0002-6784-5644
NR 19
TC 8
Z9 8
U1 1
U2 18
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0969-806X
J9 RADIAT PHYS CHEM
JI Radiat. Phys. Chem.
PD DEC
PY 2010
VL 79
IS 12
BP 1189
EP 1195
DI 10.1016/j.radphyschem.2010.07.012
PG 7
WC Chemistry, Physical; Nuclear Science & Technology; Physics, Atomic,
Molecular & Chemical
SC Chemistry; Nuclear Science & Technology; Physics
GA 656QJ
UT WOS:000282351300004
ER
PT J
AU Chappell, LJ
Whalen, MK
Gurai, S
Ponomarev, A
Cucinotta, FA
Pluth, JM
AF Chappell, Lori J.
Whalen, Mary K.
Gurai, Sheena
Ponomarev, Artem
Cucinotta, Francis A.
Pluth, Janice M.
TI Analysis of Flow Cytometry DNA Damage Response Protein Activation
Kinetics after Exposure to X Rays and High-Energy Iron Nuclei
SO RADIATION RESEARCH
LA English
DT Article
ID DOUBLE-STRAND BREAKS; PHOSPHORYLATED HISTONE H2AX; HUMAN FIBROBLASTS;
CELL-CYCLE; TRANSCRIPTION FACTOR; IONIZING-RADIATION; SPACE EXPLORATION;
GAMMA-H2AX FOCI; CHROMATIN LOOPS; REPAIR
AB We developed a mathematical method to analyze flow cytometry data to describe the kinetics of gamma-H2AX and pATF2 phosphorylation in normal human fibroblast cells after exposure to various qualities of low-dose radiation. Previously reported flow cytometry kinetics for these DSB repair phospho-proteins revealed that distributions of intensity were highly skewed, severely limiting the detection of differences in the very low-dose range. Distributional analysis revealed significant differences between control and low-dose samples when distributions were compared using the Kolmogorov-Smirnov test. Differences in radiation quality were found in the distribution shapes and when a nonlinear model was used to relate dose and time to the decay of the mean ratio of phospho-protein intensities of irradiated samples to controls. We analyzed cell cycle phase- and radiation quality-dependent characteristic repair times and residual phospho-protein levels with these methods. Characteristic repair times for gamma-H2AX were higher after exposure to iron nuclei compared to X rays in G(1) cells and in SIG(2) cells. The RBE in G(1) cells for iron nuclei relative to X rays for gamma-H2AX was 2.1 +/- 0.6 and 5.0 +/- 3.5 at 2 and 24 h after irradiation, respectively. For pATF2, a saturation effect was observed with reduced expression at high doses, especially for iron nuclei, with much slower characteristic repair times (>7 h) compared to X rays. RBEs for pATF2 were 0.7 +/- 0.1 and 1.7 +/- 0.5 at 2 and 24 h, respectively. Significant differences in gamma-H2AX and pATF2 levels when irradiated samples were compared to controls were noted even at the lowest dose analyzed (0.05 Gy). These results show that mathematical models can be applied to flow cytometry data to identify important and subtle differences after exposure to various qualities of low-dose radiation. (C) 2010 by Radiation Research Society
C1 [Whalen, Mary K.; Gurai, Sheena; Pluth, Janice M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
[Chappell, Lori J.; Ponomarev, Artem] USRA, Div Space Life Sci Div, Houston, TX 77058 USA.
[Cucinotta, Francis A.] NASA, Lyndon B Johnson Space Ctr, Houston, TX 77058 USA.
RP Pluth, JM (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM JMPluth@lbl.gov
FU NASA [03-OBPR-07-0032-0027]; U.S. DOE [DE-A103-05ER64843]
FX We gratefully acknowledge partial financial support provided by the NASA
Space Radiation Program (03-OBPR-07-0032-0027) and the U.S. DOE
(DE-A103-05ER64843).
NR 47
TC 10
Z9 10
U1 0
U2 1
PU RADIATION RESEARCH SOC
PI LAWRENCE
PA 810 E TENTH STREET, LAWRENCE, KS 66044 USA
SN 0033-7587
J9 RADIAT RES
JI Radiat. Res.
PD DEC
PY 2010
VL 174
IS 6
BP 691
EP 702
DI 10.1667/RR2204.1
PN 1
PG 12
WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging
SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology,
Nuclear Medicine & Medical Imaging
GA 690TQ
UT WOS:000285031500003
PM 21128792
ER
PT J
AU Hruszkewycz, SO
Harder, R
Xiao, X
Fuoss, PH
AF Hruszkewycz, S. O.
Harder, R.
Xiao, X.
Fuoss, P. H.
TI The effect of exit beam phase aberrations on parallel beam coherent
x-ray reconstructions
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID SYNCHROTRON-RADIATION; DECOHERENCE; ALGORITHMS; RETRIEVAL; WINDOWS
AB Diffraction artifacts from imperfect x-ray windows near the sample are an important consideration in the design of coherent x-ray diffraction measurements. In this study, we used simulated and experimental diffraction patterns in two and three dimensions to explore the effect of phase imperfections in a beryllium window (such as a void or inclusion) on the convergence behavior of phasing algorithms and on the ultimate reconstruction. A predictive relationship between beam wavelength, sample size, and window position was derived to explain the dependence of reconstruction quality on beryllium defect size. Defects corresponding to this prediction cause the most damage to the sample exit wave and induce signature error oscillations during phasing that can be used as a fingerprint of experimental x-ray window artifacts. The relationship between x-ray window imperfection size and coherent x-ray diffractive imaging reconstruction quality explored in this work can play an important role in designing high-resolution in situ coherent imaging instrumentation and will help interpret the phasing behavior of coherent diffraction measured in these in situ environments. (C) 2010 American Institute of Physics. [doi:10.1063/1.3514085]
C1 [Hruszkewycz, S. O.; Fuoss, P. H.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Harder, R.; Xiao, X.] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA.
RP Hruszkewycz, SO (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-AC02-06CH11357]
FX The authors gratefully acknowledge Dr. Ian Robinson and Dr. Meng Liang
for providing the Au nanocrystallites. This work, including the use of
the Advanced Photon Source, was supported by the U.S. Department of
Energy, Office of Science, Office of Basic Energy Sciences, under
Contract No. DE-AC02-06CH11357.
NR 22
TC 3
Z9 3
U1 1
U2 9
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD DEC
PY 2010
VL 81
IS 12
AR 123706
DI 10.1063/1.3514085
PG 5
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 700UW
UT WOS:000285770800025
PM 21198031
ER
PT J
AU Salvadori, MC
Teixeira, FS
Araujo, WWR
Sgubin, LG
Sochugov, NS
Spirin, RE
Brown, IG
AF Salvadori, M. C.
Teixeira, F. S.
Araujo, W. W. R.
Sgubin, L. G.
Sochugov, N. S.
Spirin, R. E.
Brown, I. G.
TI A high voltage pulse power supply for metal plasma immersion ion
implantation and deposition
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID FILTERED VACUUM-ARC; INTERNATIONAL WORKSHOP; CARBON; FILMS
AB We describe the design and implementation of a high voltage pulse power supply (pulser) that supports the operation of a repetitively pulsed filtered vacuum arc plasma deposition facility in plasma immersion ion implantation and deposition (Mepiiid) mode. Negative pulses (micropulses) of up to 20 kV in magnitude and 20 A peak current are provided in gated pulse packets (macropulses) over a broad range of possible pulse width and duty cycle. Application of the system consisting of filtered vacuum arc and high voltage pulser is demonstrated by forming diamond-like carbon (DLC) thin films with and without substrate bias provided by the pulser. Significantly enhanced film/substrate adhesion is observed when the pulser is used to induce interface mixing between the DLC film and the underlying Si substrate. (C) 2010 American Institute of Physics. [doi:10.1063/1.3518969]
C1 [Salvadori, M. C.; Teixeira, F. S.; Araujo, W. W. R.; Sgubin, L. G.] Univ Sao Paulo, Inst Phys, BR-05315970 Sao Paulo, Brazil.
[Sochugov, N. S.; Spirin, R. E.] Russian Acad Sci, Inst High Current Elect, Siberian Div, Tomsk 634055, Russia.
[Brown, I. G.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Salvadori, MC (reprint author), Univ Sao Paulo, Inst Phys, CP 66318, BR-05315970 Sao Paulo, Brazil.
EM mcsalvadori@if.usp.br
RI Salvadori, Maria Cecilia/A-9379-2013; Teixeira, Fernanda/A-9395-2013
FU Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP); Conselho
Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Brazil
FX This work was supported by the Fundacao de Amparo a Pesquisa do Estado
de Sao Paulo (FAPESP) and the Conselho Nacional de Desenvolvimento
Cientifico e Tecnologico (CNPq), Brazil.
NR 19
TC 2
Z9 2
U1 0
U2 9
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD DEC
PY 2010
VL 81
IS 12
AR 124703
DI 10.1063/1.3518969
PG 5
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 700UW
UT WOS:000285770800034
PM 21198040
ER
PT J
AU Rothberg, J
Caudy, AA
Kelleher, NL
Wiley, HS
AF Rothberg, Jonathan
Caudy, Amy A.
Kelleher, Neil L.
Wiley, H. Steven
TI The Scientist TOP TEN INNOVATIONS 2010
SO SCIENTIST
LA English
DT Article
C1 [Caudy, Amy A.] Princeton Univ, Lewis Sigler Inst Integrat Genom, Princeton, NJ 08544 USA.
[Kelleher, Neil L.] Northwestern Univ, Evanston, IL 60208 USA.
[Wiley, H. Steven] Pacific NW Natl Lab, EMSL, Richland, WA 99352 USA.
NR 0
TC 0
Z9 0
U1 1
U2 5
PU SCIENTIST INC
PI PHILADELPHIA
PA 400 MARKET ST, STE 1250, PHILADELPHIA, PA 19106 USA
SN 0890-3670
J9 SCIENTIST
JI Scientist
PD DEC
PY 2010
VL 24
IS 12
BP 47
EP 53
PG 7
WC Information Science & Library Science; Multidisciplinary Sciences
SC Information Science & Library Science; Science & Technology - Other
Topics
GA 687PV
UT WOS:000284791300009
ER
PT J
AU Li, HQ
Misra, A
AF Li, Hongqi
Misra, Amit
TI A dramatic increase in the strength of a nanoporous Pt-Ni alloy induced
by annealing
SO SCRIPTA MATERIALIA
LA English
DT Article
DE Nanoporous; Mechanical properties; Annealing; Pt-Ni alloy
ID MECHANICAL-BEHAVIOR; LOW-TEMPERATURE; THIN-FILMS; GOLD; AU
AB The microstructure and mechanical strength of a nanoporous Pt-Ni alloy were characterized before and after 300 degrees C annealing for 1 h. After annealing microhardness increased significantly from 2.1 to 3.8 GPa, while the relative density, ligament morphology and size remained unchanged. The annealing-induced strength increase is believed to be due to microstructure relaxation and grain growth. This study suggests that the mechanical properties of nanoporous metals depend not only on the relative density, ligament size and morphology, but also on the structure inside ligaments. (c) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Li, Hongqi; Misra, Amit] Los Alamos Natl Lab, Mat Phys & Applicat Div, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA.
RP Li, HQ (reprint author), Los Alamos Natl Lab, Mat Phys & Applicat Div, Ctr Integrated Nanotechnol, POB 1663, Los Alamos, NM 87545 USA.
EM hongqi2007@gmail.com; amisra@lanl.gov
RI Li, Hongqi/B-6993-2008; Misra, Amit/H-1087-2012
FU US Department of Energy, Office of Science, Office of Basic Energy
Sciences
FX This study was supported by the US Department of Energy, Office of
Science, Office of Basic Energy Sciences. The work was performed at the
Center for Integrated Nanotechnologies, a US Department of Energy,
Office of Basic Energy Sciences user facility. The authors would like to
acknowledge discussions with J.P. Hirth and S.T. Picraux and thank J.K.
Baldwin, D. Williams and D.J. Safarik for their help in performing the
sputter deposition, carrying out XRD and making the
Pt75Ni25 ingot, respectively.
NR 28
TC 4
Z9 4
U1 0
U2 8
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD DEC
PY 2010
VL 63
IS 12
BP 1169
EP 1172
DI 10.1016/j.scriptamat.2010.08.026
PG 4
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 674QT
UT WOS:000283763100008
ER
PT J
AU Smith, JL
Collins, HP
Bailey, VL
AF Smith, Jeffrey L.
Collins, Harold P.
Bailey, Vanessa L.
TI The effect of young biochar on soil respiration
SO SOIL BIOLOGY & BIOCHEMISTRY
LA English
DT Article
DE Biochar; Carbon sequestration; Soil respiration; partial derivative(13)C
ID AMENDMENT; CHARCOAL; FERTILITY; CARBON
AB The low temperature pyrolysis of organic material produces biochar, a charcoal like substance. Biochar is being promoted as a soil amendment to enhance soil quality, it is also seen as a mechanism of long-term sequestration of carbon. Our experiments tested the hypothesis that biochar is inert in soil. However, we measured an increase in CO(2) production from soils after biochar amendment which increased with increasing rates of biochar. The partial derivative(13)C signature of the CO(2) evolved in the first several days of the incubation was the same as the partial derivative(13)C signature of the biochar, confirming that biochar contributed to the CO(2) flux. This effect diminished by day 6 of the incubation suggesting that most of the biochar C is slowly decomposing. Thus, aside from this short-term mineralization increasing soil C with young biochar may indeed be a long-term C storage mechanism. Published by Elsevier Ltd.
C1 [Smith, Jeffrey L.] Washington State Univ, USDA ARS, Pullman, WA 99164 USA.
[Collins, Harold P.] USDA ARS, Vegetable & Forage Crops Res Unit, Prosser, WA 99350 USA.
[Bailey, Vanessa L.] Pacific NW Natl Lab, Microbiol Biol Sci Div, Richland, WA 99352 USA.
RP Smith, JL (reprint author), Washington State Univ, USDA ARS, 215 Johnson Hall, Pullman, WA 99164 USA.
EM jlsmith@wsu.edu; hal.collins@ars.usda.gov; vanessa.bailey@pnl.gov
RI Ducey, Thomas/A-6493-2011;
OI Bailey, Vanessa/0000-0002-2248-8890
FU US Department of Energy, Office of Science, Office of Biological and
Environmental Research, Climate Change Research Division
[DE-AC05-76RL01830]
FX This work was supported in part by the US Department of Energy, Office
of Science, Office of Biological and Environmental Research, Climate
Change Research Division under contract DE-AC05-76RL01830 to Pacific
Northwest National Laboratory.
NR 10
TC 166
Z9 194
U1 11
U2 150
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0038-0717
J9 SOIL BIOL BIOCHEM
JI Soil Biol. Biochem.
PD DEC
PY 2010
VL 42
IS 12
BP 2345
EP 2347
DI 10.1016/j.soilbio.2010.09.013
PG 3
WC Soil Science
SC Agriculture
GA 681EQ
UT WOS:000284294600038
ER
PT J
AU Nilsson, AM
Jonsson, JC
AF Nilsson, Annica M.
Jonsson, Jacob C.
TI Light-scattering properties of a Venetian blind slat used for
daylighting applications
SO SOLAR ENERGY
LA English
DT Article
DE Raytracing; Venetian blinds; BSDF; ABg model
AB The low cost, simplicity, and aesthetic appearance of external and internal shading devices, make them commonly used for daylighting and glare-control applications Shading devices, such as Venetian blinds, screens, and roller shades, generally exhibit light scattering and/or light redirecting properties This requires the bi-directional scattering distribution function (BSDF) of the material to be known in order to accurately predict the daylight distribution and energy flow through the fenestration system Acquiring the complete BSDF is not a straighforward task, and to complete the process it is often required that a model is used to complement the measured data In this project a Venetian blind slat with a white top surface and a brushed aluminum bottom surface was optically characterized A goniophotometer and an integrating sphere spectrophotometer were used to determine the angle resolved and hemispherical reflectance of the sample, respectively The acquired data were fitted to a scattering model providing one Lambertian and one angle dependent description of the surface properties These were used in combination with raytracing to obtain the complete BSDFs of the Venetian blind system (C) 2010 Elsevier Ltd All rights reserved
C1 [Nilsson, Annica M.] Uppsala Univ, Angstrom Lab, Dept Engn Sci, SE-75121 Uppsala, Sweden.
[Jonsson, Jacob C.] Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA.
RP Nilsson, AM (reprint author), Uppsala Univ, Angstrom Lab, Dept Engn Sci, POB 534, SE-75121 Uppsala, Sweden.
FU Office of Building Technology, State, and Community Programs, of the US
Department of Energy [DE-AC02-05CH11231]
FX Annica M Nilsson would like to thank Sederholms and Morings stipendfunds
for making the stay at Lawrence Berkeley National Laboratory possible
The contributions from Jacob C Jonsson were supported by the Assistant
Secretary for Energy Efficiency and Renewable Energy, Office of Building
Technology, State, and Community Programs, of the US Department of
Energy under Contract No DE-AC02-05CH11231
NR 15
TC 9
Z9 9
U1 1
U2 6
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0038-092X
J9 SOL ENERGY
JI Sol. Energy
PD DEC
PY 2010
VL 84
IS 12
BP 2103
EP 2111
DI 10.1016/j.solener.2010.09.005
PG 9
WC Energy & Fuels
SC Energy & Fuels
GA 692BG
UT WOS:000285125900013
ER
PT J
AU Perez, R
Kivalov, S
Schlemmer, J
Hemker, K
Renne, D
Hoff, TE
AF Perez, Richard
Kivalov, Sergey
Schlemmer, James
Hemker, Karl, Jr.
Renne, David
Hoff, Thomas E.
TI Validation of short and medium term operational solar radiation
forecasts in the US
SO SOLAR ENERGY
LA English
DT Article
DE Solar resource assessment; Irradiance; Forecast; Prediction; Validation
ID MODEL
AB This paper presents a validation of the short and medium term global irradiance forecasts that are produced as part of the US Solar-Anywhere (20101 data set The short term forecasts that extend up to 6-h ahead are based upon cloud motion derived from consecutive geostationary satellite images The medium term forecasts extend up to 6 days-ahead and are modeled from gridded cloud cover forecasts from the US National Digital Forecast Database
The forecast algorithms are validated against ground measurements for seven climatically distinct locations in the United States for 1 year An initial analysis of regional performance using satellite-derived irradiances as a benchmark reference is also presented (C) 2010 Elsevier Ltd All rights reserved
C1 [Perez, Richard; Kivalov, Sergey; Schlemmer, James; Hemker, Karl, Jr.] SUNY Albany, Atmospher Sci Res Ctr, Albany, NY 12203 USA.
[Renne, David] Natl Renewable Energy Lab, Golden, CO USA.
[Hoff, Thomas E.] Clean Power Res, Napa, CA USA.
RP Perez, R (reprint author), SUNY Albany, Atmospher Sci Res Ctr, 251 Fuller Rd, Albany, NY 12203 USA.
FU Clean Power Research; NREL [AEK98833801]
FX The forecast modeling capability was developed as part of the
construction of SolarAnywhere (R) under funding from Clean Power
Research The present validation analysis performed under funding from
NREL (Contract AEK98833801) The first author of this paper and his team
at the University at Albany receives funding from Clean Power Research
to develop and produce the Solar Anywhere solar resource satellite and
forecast data evaluated in this paper
NR 18
TC 120
Z9 120
U1 5
U2 27
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0038-092X
J9 SOL ENERGY
JI Sol. Energy
PD DEC
PY 2010
VL 84
IS 12
BP 2161
EP 2172
DI 10.1016/j.solener.2010.08.014
PG 12
WC Energy & Fuels
SC Energy & Fuels
GA 692BG
UT WOS:000285125900019
ER
PT J
AU Biswas, R
Bhattacharya, J
Lewis, B
Chakravarty, N
Dalal, V
AF Biswas, R.
Bhattacharya, J.
Lewis, B.
Chakravarty, N.
Dalal, V.
TI Enhanced nanocrystalline silicon solar cell with a photonic crystal
back-reflector
SO SOLAR ENERGY MATERIALS AND SOLAR CELLS
LA English
DT Article
DE Light-trapping; Nanocrystalline silicon; Photonic crystal; Solar cell
ID ABSORPTION ENHANCEMENT
AB Nanocrystalline silicon solar cells were enhanced with a photonic crystal back-reflector. Rigorous scattering matrix simulations were used to optimize a photonic crystal back-reflector consisting of a triangular lattice of nano-holes, with a pitch near 800 nm. The photonic crystal back-reflector with a pitch of 800 nm was fabricated on the crystalline silicon substrate by photolithography and reactive-ion etching, and coated with silver and zinc oxide. Nanocrystalline silicon solar cells were grown on the patterned substrates. We observed similar to 7% enhancement of the absorption and photo-generated current relative to a Ag/ZnO substrate, with an enhancement ratio of 1.5 near the band edge. Significant enhancement occurred in photon absorption at near infrared wavelengths greater than 700 nm, due to diffraction resonances of the incoming light. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Biswas, R.] Iowa State Univ, Microelect Res Ctr, Dept Phys & Astron, Ames, IA 50011 USA.
[Biswas, R.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
[Biswas, R.; Bhattacharya, J.; Lewis, B.; Chakravarty, N.; Dalal, V.] Iowa State Univ, Microelect Res Ctr, Dept Elect & Comp Engn, Ames, IA 50011 USA.
RP Biswas, R (reprint author), Iowa State Univ, Microelect Res Ctr, Dept Phys & Astron, Ames, IA 50011 USA.
EM biswasr@iastate.edu
FU Microelectronics Research Center (ISU); NSF [ECCS-0824091,
ECCS-06013177]; Iowa Powerfund; Department of Energy [DE-AC0207CH11385];
Lightwave Power
FX We thank Max Noack and J. Jin for informative discussions and Ben Curtin
for lithography and valuable suggestions. We would also like to thank
the entire team of the Microelectronics Research Center (ISU) for their
support. We thank D. Vellenga and the North Carolina State University
Nanofabrication Center for photolithography. We acknowledge support from
the NSF under Grants ECCS-0824091 and ECCS-06013177, the Iowa Powerfund
and Lightwave Power. The Ames Laboratory is operated for the Department
of Energy by Iowa State University under Contract no. DE-AC0207CH11385.
NR 26
TC 36
Z9 36
U1 1
U2 29
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0927-0248
J9 SOL ENERG MAT SOL C
JI Sol. Energy Mater. Sol. Cells
PD DEC
PY 2010
VL 94
IS 12
BP 2337
EP 2342
DI 10.1016/j.solmat.2010.08.007
PG 6
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA 676ZU
UT WOS:000283959500056
ER
PT J
AU Rahman, MR
Valasenko, MP
Vlasenko, LS
Haller, EE
Itoh, KM
AF Rahman, M. R.
Valasenko, M. P.
Vlasenko, L. S.
Haller, E. E.
Itoh, K. M.
TI Splitting of electron paramagnetic resonance lines of lithium-oxygen
centers in isotopically enriched Si-28 single crystals
SO SOLID STATE COMMUNICATIONS
LA English
DT Article
DE Semiconductors; Impurity in semiconductor; Electron paramagnetic
resonance
ID QUANTUM COMPUTER; SILICON; DONORS; SPECTROSCOPY; GROWTH
AB A significant narrowing of the electron paramagnetic resonance (EPR) and additional hyperfine structures of lithium-oxygen (Li-O) centers was observed in isotopically enriched Si-28 single crystals Unexpected splitting was found reflecting the principal axis of the formally assigned trigonal g-tensors being tilted 3 from the (111) crystal axis i e the g-tensor of the Li-O center actually has a monoclinic symmetry Furthermore the splitting of the Li-7 hyperfine lines into four components was observed at a temperature of 3 5 K (C) 2010 Elsevier Ltd All rights reserved
C1 [Rahman, M. R.; Itoh, K. M.] Keio Univ, Sch Fdn Sci & Technol, Yokohama, Kanagawa 2238522, Japan.
[Valasenko, M. P.; Vlasenko, L. S.] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia.
[Haller, E. E.] Lawrence Berkeley Natl Lab & UC Berkeley, Berkeley, CA 94720 USA.
RP Rahman, MR (reprint author), Keio Univ, Fac Sci & Technol, Dept Appl Phys & Phys Informat, Tokyo 108, Japan.
RI Itoh, Kohei/C-5738-2014
FU MEXT [18001002]; Special Coordination Funds for Promoting Science and
Technology; FIRST; Keio University
FX This work was supported in part by a Grant-in-Aid for Scientific
Research by MEXT Specially Promoted Research #18001002 in part by
Special Coordination Funds for Promoting Science and Technology in part
by FIRST and in part by a Grant-in-Aid for the Global Center of
Excellence at Keio University
NR 25
TC 2
Z9 2
U1 0
U2 5
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0038-1098
J9 SOLID STATE COMMUN
JI Solid State Commun.
PD DEC
PY 2010
VL 150
IS 45-46
BP 2275
EP 2277
DI 10.1016/j.ssc.2010.09.026
PG 3
WC Physics, Condensed Matter
SC Physics
GA 687QI
UT WOS:000284792600017
ER
PT J
AU Winkler, B
Juarez-Arellano, EA
Friedrich, A
Bayarjargal, L
Schroder, F
Biehler, J
Milman, V
Clark, SM
Yan, JY
AF Winkler, Bjorn
Juarez-Arellano, Erick A.
Friedrich, Alexandra
Bayarjargal, Lkhamsuren
Schroder, Florian
Biehler, Jasmin
Milman, Victor
Clark, Simon M.
Yan, Jinyuan
TI In situ synchrotron X-ray diffraction study of the formation of TaB2
from the elements in a laser heated diamond anvil cell
SO SOLID STATE SCIENCES
LA English
DT Article
DE Tantalum boride; Laser heated diamond anvil cell; Synchrotron; DFT
calculations
ID HIGH-TEMPERATURE SYNTHESIS; HIGH-PRESSURE; SUPERHARD; DIBORIDE
AB In situ synchrotron X-ray diffraction was used to observe the reaction induced by laser heating of a mixture of tantalum and boron in a diamond anvil cell Laser heating at pressures of 12 and 24 GPa resulted in the formation of TaB2 The bulk modulus of TaB2 (B-0 = 341(7) GPa) was determined from a fit of a second-order Birch-Murnaghan equation of state to the p V data Density functional theory based calculations complemented the experimental observations and were used to obtain the full tensor of elastic stiffness coefficients The choice of the most appropriate exchange-correlation functional for the description of elastic properties is discussed (C) 2010 Elsevier Masson SAS All rights reserved
C1 [Juarez-Arellano, Erick A.] Univ Papaloapan, Tuxtepec 68301, Mexico.
[Winkler, Bjorn; Friedrich, Alexandra; Bayarjargal, Lkhamsuren; Schroder, Florian; Biehler, Jasmin] Goethe Univ Frankfurt, Inst Geowissensch, D-60438 Frankfurt, Germany.
[Milman, Victor] Accelrys, Cambridge, England.
[Clark, Simon M.; Yan, Jinyuan] Univ Calif Berkeley, Lawrence Berkeley Lab, ALS, Berkeley, CA 94720 USA.
RP Juarez-Arellano, EA (reprint author), Univ Papaloapan, Circuito Cent 200 Parque Ind, Tuxtepec 68301, Mexico.
RI Schroder, Florian/D-5872-2012; Milman, Victor/M-6117-2015; Clark,
Simon/B-2041-2013
OI Milman, Victor/0000-0003-2258-1347; Juarez-Arellano,
Erick/0000-0003-4844-8317; Clark, Simon/0000-0002-7488-3438
FU Deutsche Forschungsgemeinschaft [Wi-1232 Fr-2491, SPP 1236]; Office of
Science Office of Basic Energy Science of the U S Department of Energy
[DE-AC02-05CH11231]; COMPRES; Consortium for Materials Properties
Research in Earth Science under NSF [EAR 06-49658]; Vereinigung der
Freunde u Forderer der Goethe-Umversitat Frankfurt
FX This research was supported by Deutsche Forschungsgemeinschaft (Projects
Wi-1232 Fr-2491) in the framework of the DFG-SPP 1236 The Advanced Light
Source is supported by the Director Office of Science Office of Basic
Energy Science of the U S Department of Energy under contract
DE-AC02-05CH11231 This research was partially supported by COMPRES the
Consortium for Materials Properties Research in Earth Science under NSF
Cooperative Agreement EAR 06-49658 and by the Vereinigung der Freunde u
Forderer der Goethe-Umversitat Frankfurt
NR 22
TC 5
Z9 5
U1 2
U2 14
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1293-2558
J9 SOLID STATE SCI
JI Solid State Sci.
PD DEC
PY 2010
VL 12
IS 12
BP 2059
EP 2064
DI 10.1016/j.solidstatesciences.2010.08.027
PG 6
WC Chemistry, Inorganic & Nuclear; Chemistry, Physical; Physics, Condensed
Matter
SC Chemistry; Physics
GA 703CE
UT WOS:000285950900022
ER
PT J
AU Dzyuba, A
Romanenko, A
Cooley, LD
AF Dzyuba, A.
Romanenko, A.
Cooley, L. D.
TI Model for initiation of quality factor degradation at high accelerating
fields in superconducting radio-frequency cavities
SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY
LA English
DT Article
ID SRF CAVITIES; TYPE-2 SUPERCONDUCTORS; VORTEX ENTRY; NIOBIUM; RESISTANCE;
DEFECTS
AB A model for the onset of the reduction in superconducting radio-frequency (SRF) cavity quality factor, the so-called Q-drop, at high accelerating electric fields is presented. Since magnetic fields at the cavity equator are tied to accelerating electric fields by a simple geometric factor, the onset of magnetic flux penetration determines the onset of Q-drop. We consider breakdown of the surface barrier at triangular grooves to predict the magnetic field of first flux penetration H-pen. Such defects were argued to be the worst case by Buzdin and Daumens (1998 Physica C 294 257), whose approach, moreover, incorporates both the geometry of the groove and local contamination via the Ginzburg-Landau parameter kappa. Since previous Q-drop models focused on either topography or contamination alone, the proposed model allows new comparisons of one effect in relation to the other. The model predicts equivalent reduction of H-pen when either roughness or contamination were varied alone, so smooth but dirty surfaces limit cavity performance about as much as rough but clean surfaces do. Still lower H-pen was predicted when both effects were combined, i.e. contamination should exacerbate the negative effects of roughness and vice versa. To test the model with actual data, coupons were prepared by buffered chemical polishing and electropolishing, and stylus profilometry was used to obtain distributions of angles. From these data, curves for surface resistance generated by simple flux flow as a function of magnetic field were generated by integrating over the distribution of angles for reasonable values of kappa. This showed that combined effects of roughness and contamination indeed reduce the Q-drop onset field by similar to 20%, and that contamination contributes to Q-drop as much as roughness. The latter point may be overlooked by SRF cavity research, since access to the cavity interior by spectroscopy tools is very difficult, whereas optical images have become commonplace. The model was extended to fit cavity test data, which indicated that reduction of the superconducting gap by contaminants may also play a role in Q-drop.
C1 [Dzyuba, A.; Romanenko, A.; Cooley, L. D.] Fermilab Natl Accelerator Lab, Tech Div, SRF Mat Grp, Batavia, IL 60510 USA.
[Dzyuba, A.] Novosibirsk State Univ, Novosibirsk 630090, Russia.
RP Dzyuba, A (reprint author), Fermilab Natl Accelerator Lab, Tech Div, SRF Mat Grp, Batavia, IL 60510 USA.
RI Cooley, Lance/E-7377-2015
OI Cooley, Lance/0000-0003-3488-2980
NR 45
TC 6
Z9 6
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-2048
J9 SUPERCOND SCI TECH
JI Supercond. Sci. Technol.
PD DEC
PY 2010
VL 23
IS 12
AR 125011
DI 10.1088/0953-2048/23/12/125011
PG 9
WC Physics, Applied; Physics, Condensed Matter
SC Physics
GA 684DH
UT WOS:000284527200017
ER
PT J
AU Brey, EM
Appel, A
Chiu, YC
Zhong, Z
Cheng, MH
Engel, H
Anastasio, MA
AF Brey, Eric M.
Appel, Alyssa
Chiu, Yu-Chieh
Zhong, Zhong
Cheng, Ming-Huei
Engel, Holger
Anastasio, Mark A.
TI X-Ray Imaging of Poly(Ethylene Glycol) Hydrogels Without Contrast Agents
SO TISSUE ENGINEERING PART C-METHODS
LA English
DT Article
ID RADIOGRAPHY; IMPLEMENTATION
AB Hydrogels have shown promise for a number of tissue engineering applications. However, their high water content results in little or no image contrast when using conventional X-ray imaging techniques. X-ray imaging techniques based on phase-contrast have shown promise for biomedical application due to their ability to provide information about the X-ray refraction properties of samples. Nonporous and porous poly(ethylene glycol) hydrogels were synthesized and imaged using a synchrotron light source employing a silicon analyzer crystal and an X-ray energy of 40-keV. Data were acquired at 21 angular analyzer positions spanning the range of -5 to 5 mu rad. Images that depict the projected X-ray absorption, refraction, and ultra-small-angle scatter (USAXS) properties of the hydrogels were reconstructed from the measurement data. The poly(ethylene glycol) hydrogels could be discerned from surrounding water and soft tissue in the refraction image but not the absorption or USAXS images. In addition, the refraction images of the porous hydrogels have a speckle pattern resulting in increased image texture in comparison to nonporous hydrogels. To our knowledge, this is the first study to show that X-ray phase-contrast imaging techniques can identify and provide detail on hydrogel structure without the addition of contrast agents.
C1 [Brey, Eric M.; Appel, Alyssa; Chiu, Yu-Chieh; Anastasio, Mark A.] IIT, Dept Biomed Engn, Chicago, IL 60616 USA.
[Brey, Eric M.; Appel, Alyssa] Edward Hines Jr VA Hosp, Hines, IL 60141 USA.
[Zhong, Zhong] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
[Cheng, Ming-Huei; Engel, Holger] Chang Gung Univ, Chang Gung Mem Hosp, Dept Plast & Reconstruct Surg, Coll Med, Tao Yuan, Taiwan.
RP Brey, EM (reprint author), IIT, Dept Biomed Engn, 3255 S Dearborn St, Chicago, IL 60616 USA.
EM brey@iit.edu
FU Veterans Administration; National Science Foundation [0854430, 0731201,
0546113]; National Institute of Health [R01E B009715]; Chang Gung
Memorial Hospital (CMRPG) [390101]
FX The research has been supported by the Veterans Administration, the
National Science Foundation (0854430, 0731201, 0546113), the National
Institute of Health (R01E B009715), and Chang Gung Memorial Hospital
(CMRPG 390101).
NR 13
TC 9
Z9 9
U1 0
U2 7
PU MARY ANN LIEBERT, INC
PI NEW ROCHELLE
PA 140 HUGUENOT STREET, 3RD FL, NEW ROCHELLE, NY 10801 USA
SN 1937-3384
EI 1937-3392
J9 TISSUE ENG PART C-ME
JI Tissue Eng. Part C-Methods
PD DEC
PY 2010
VL 16
IS 6
BP 1597
EP 1600
DI 10.1089/ten.tec.2010.0150
PG 4
WC Cell & Tissue Engineering; Biotechnology & Applied Microbiology; Cell
Biology
SC Cell Biology; Biotechnology & Applied Microbiology
GA 685KG
UT WOS:000284627000037
PM 20662738
ER
PT J
AU Yamazaki, I
Natarajan, V
Bai, ZJ
Hamann, B
AF Yamazaki, Ichitaro
Natarajan, Vijay
Bai, Zhaojun
Hamann, Bernd
TI Segmenting point-sampled surfaces
SO VISUAL COMPUTER
LA English
DT Article
DE Point sets; Sampling; Features; Geodesic distance; Normalized cut;
Topological methods; Spectral analysis; Multiphase segmentation;
Hierarchical segmentation
ID SEGMENTATION; MESHES; PARAMETERIZATION; DECOMPOSITION; GENERATION
AB Extracting features from point-based representations of geometric surface models is becoming increasingly important for purposes such as model classification, matching, and exploration. In an earlier paper, we proposed a multiphase segmentation process to identify elongated features in point-sampled surface models without the explicit construction of a mesh or other surface representation. The preliminary results demonstrated the strength and potential of the segmentation process, but the resulting segmentations were still of low quality, and the segmentation process could be slow. In this paper, we describe several algorithmic improvements to overcome the shortcomings of the segmentation process. To demonstrate the improved quality of the segmentation and the superior time efficiency of the new segmentation process, we present segmentation results obtained for various point-sampled surface models. We also discuss an application of our segmentation process to extract ridge-separated features in point-sampled surfaces of CAD models.
C1 [Yamazaki, Ichitaro; Bai, Zhaojun] Univ Calif Davis, Dept Comp Sci, Davis, CA 95616 USA.
[Hamann, Bernd] IDAV, Dept Comp Sci, Davis, CA 95616 USA.
[Natarajan, Vijay] Indian Inst Sci, Dept Comp Sci & Automat, Supercomp Educ & Res Ctr, Bangalore 560012, Karnataka, India.
RP Yamazaki, I (reprint author), Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA USA.
EM yamazaki@cs.ucdavis.edu; vijayn@csa.iisc.ernet.in; bai@cs.ucdavis.edu;
hamann@cs.ucdavis.edu
FU National Science Foundation [0313390, 0611548, ACI 9624034]; Information
Technology Research (ITR); Indian Institute of Science
FX The point sets used in our experiments were downloaded from on-line 3D
scan repositories [54, 55]. We used qslim [56] to generate coarse point
sets. Yamazaki and Bai were supported in part by the National Science
Foundation grants 0313390 and 0611548. Natarajan and Hamann were
supported in part by the National Science Foundation grant under
contracts ACI 9624034 (CAREER Award) and a large Information Technology
Research (ITR) grant. Natarajan was also supported by a faculty startup
grant from the Indian Institute of Science. We thank the members of the
Visualization and Computer Graphics Research Group at the Institute for
Data Analysis and Visualization (IDAV) at the University of California,
Davis for helpful discussions.
NR 55
TC 7
Z9 8
U1 0
U2 12
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0178-2789
J9 VISUAL COMPUT
JI Visual Comput.
PD DEC
PY 2010
VL 26
IS 12
BP 1421
EP 1433
DI 10.1007/s00371-010-0428-z
PG 13
WC Computer Science, Software Engineering
SC Computer Science
GA 678WA
UT WOS:000284112400001
ER
PT J
AU De Steven, D
Sharitz, RR
Barton, CD
AF De Steven, Diane
Sharitz, Rebecca R.
Barton, Christopher D.
TI Ecological Outcomes and Evaluation of Success in Passively Restored
Southeastern Depressional Wetlands
SO WETLANDS
LA English
DT Article
DE Carolina bay; Mitigation bank; Vegetation dynamics; Wetland restoration
ID PRAIRIE POTHOLE WETLANDS; RESTORATION ECOLOGY; COASTAL-PLAIN; VEGETATION
DEVELOPMENT; COMMUNITY-DEVELOPMENT; CAROLINA BAY; SELF-DESIGN;
REVEGETATION; MANAGEMENT; FRAMEWORK
AB Depressional wetlands may be restored passively by disrupting prior drainage to recover original hydrology and relying on natural revegetation. Restored hydrology selects for wetland vegetation; however, depression geomorphology constrains the achievable hydroperiod, and plant communities are influenced by hydroperiod and available species pools. Such constraints can complicate assessments of restoration success. Sixteen drained depressions in South Carolina, USA, were restored experimentally by forest clearing and ditch plugging for potential crediting to a mitigation bank. Depressions were assigned to alternate revegetation methods representing desired targets of herbaceous and wet-forest communities. After five years, restoration progress and revegetation methods were evaluated. Restored hydroperiods differed among wetlands, but all sites developed diverse vegetation of native wetland species. Vegetation traits were influenced by hydroperiod and the effects of early drought, rather than by revegetation method. For mitigation banking, individual wetlands were assessed for improvement from pre-restoration condition and similarity to assigned reference type. Most wetlands met goals to increase hydroperiod, herb-species dominance, and wetland-plant composition. Fewer wetlands achieved equivalence to reference types because some vegetation targets were incompatible with depression hydroperiods and improbable without intensive management. The results illustrated a paradox in judging success when vegetation goals may be unsuited to system constraints.
C1 [De Steven, Diane] US Forest Serv, So Res Stn, Ctr Bottomland Hardwoods Res, Stoneville, MS 38776 USA.
[Sharitz, Rebecca R.] Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA.
[Barton, Christopher D.] Univ Kentucky, Dept Forestry, Lexington, KY 40546 USA.
RP De Steven, D (reprint author), US Forest Serv, So Res Stn, Ctr Bottomland Hardwoods Res, POB 227, Stoneville, MS 38776 USA.
EM ddesteven@fs.fed.us
FU DOE-Savannah River Operations Office [DE-IA09-76SR00056,
DE-IA09-00SR22188]; DOE Office of Biological and Environmental Research
[DE-FC09-96SR18546]; USFS-Savannah River [01-CA-11083600-011,
03-CS-11083600-002]; Center for Forested Wetlands Research
[01-CA-11330135-457]
FX We sincerely thank John Blake, U.S. Forest Service-Savannah River, for
sustained dedication to overall project management, and also Randy Kolka
and Don Imm for their early contributions. For field assistance, we
especially thank J. Singer, J. Mulhouse, L. Lee, P. Stankus, A.
Harrison, and A. Lowrance. T. Dell and R. Souter advised on statistics.
Comments by B. Collins, R. Kolka, and several reviewers and editors
greatly improved the manuscript. Funding was provided by the
DOE-Savannah River Operations Office (Agreements DE-IA09-76SR00056 and
DE-IA09-00SR22188 with the USFS-Savannah River), the DOE Office of
Biological and Environmental Research (Award DE-FC09-96SR18546 to The
Univ. of Georgia Research Foundation), and by Cooperative Agreements
with the USFS-Savannah River (01-CA-11083600-011, 03-CS-11083600-002)
and the Center for Forested Wetlands Research (01-CA-11330135-457).
NR 59
TC 9
Z9 9
U1 6
U2 38
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0277-5212
J9 WETLANDS
JI Wetlands
PD DEC
PY 2010
VL 30
IS 6
BP 1129
EP 1140
DI 10.1007/s13157-010-0100-4
PG 12
WC Ecology; Environmental Sciences
SC Environmental Sciences & Ecology
GA 691QH
UT WOS:000285095400012
ER
PT J
AU Tonchev, AP
Hammond, SL
Howell, CR
Huibregtse, C
Hutcheson, A
Kelley, JH
Kwan, E
Raut, R
Rusev, G
Tornow, W
Kawano, T
Vieira, DJ
Wilhelmy, JB
AF Tonchev, A. P.
Hammond, S. L.
Howell, C. R.
Huibregtse, C.
Hutcheson, A.
Kelley, J. H.
Kwan, E.
Raut, R.
Rusev, G.
Tornow, W.
Kawano, T.
Vieira, D. J.
Wilhelmy, J. B.
TI Measurement of the Am-241(gamma,n)Am-240 reaction in the giant dipole
resonance region
SO PHYSICAL REVIEW C
LA English
DT Article
ID PHOTONEUTRON CROSS-SECTIONS; GAMMA; PHOTONS; AM-241
AB The photodisintegration cross section of the radioactive nucleus Am-241 has been obtained using activation techniques and monoenergetic gamma-ray beams from the HI. S facility. The induced activity of Am-240 produced via the Am-241(gamma,n) reaction was measured in the energy interval from 9 to 16 MeV utilizing high-resolution gamma-ray spectroscopy. The experimental data for the Am-241(gamma,n) reaction in the giant dipole resonance energy region are compared with statistical nuclear-model calculations.
C1 [Tonchev, A. P.; Howell, C. R.; Hutcheson, A.; Kwan, E.; Raut, R.; Rusev, G.; Tornow, W.] Duke Univ, Dept Phys, Durham, NC 27708 USA.
[Tonchev, A. P.; Hammond, S. L.; Howell, C. R.; Huibregtse, C.; Hutcheson, A.; Kelley, J. H.; Kwan, E.; Raut, R.; Rusev, G.; Tornow, W.] Triangle Univ Nucl Lab, Durham, NC 27708 USA.
[Hammond, S. L.] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA.
[Huibregtse, C.; Kelley, J. H.] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA.
[Kawano, T.; Vieira, D. J.; Wilhelmy, J. B.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Tonchev, AP (reprint author), Duke Univ, Dept Phys, Durham, NC 27708 USA.
FU National Nuclear Security Administration through Department of Energy
[DE-FG52-09NA29448, DE-PS52-08NA28920]; US Department of Energy at Los
Alamos National Laboratory by the Los Alamos National Security; LLC
[DE-AC52-06NA25369]
FX The authors would like to thank the HI gamma S operational team for
providing an excellent photon beam for these measurements. They also
would like to acknowledge M. A. Stoyer for the preparation of the
241Am targets and M. B. Chadwick for stimulating the present
experimental activity. This work was supported by the National Nuclear
Security Administration under the Stewardship Science Academic Alliances
Program through Department of Energy Grants No. DE-FG52-09NA29448 and
DE-PS52-08NA28920 and performed under the auspices of the US Department
of Energy at Los Alamos National Laboratory by the Los Alamos National
Security, LLC, under Contract No. DE-AC52-06NA25369.
NR 22
TC 6
Z9 6
U1 2
U2 4
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
EI 1089-490X
J9 PHYS REV C
JI Phys. Rev. C
PD NOV 30
PY 2010
VL 82
IS 5
AR 054620
DI 10.1103/PhysRevC.82.054620
PG 6
WC Physics, Nuclear
SC Physics
GA 713JT
UT WOS:000286735000005
ER
PT J
AU Wang, JA
Chen, GM
Wu, WM
AF Wang, Jian
Chen, Guoming
Wu, Weimin
TI THE IMPACT OF LO, NLO AND NNLO FOR THE HIGGS SEARCHING AT root s=7 TeV
OF LHC
SO MODERN PHYSICS LETTERS A
LA English
DT Article
DE NNLO; Higgs searching
ID BOSON PRODUCTION
AB Most of current Monte Carlo studies on the Higgs searching are based on LO, or NLO calculation. However, in recent years, the next-to-next-to-leading order (NNLO) corrections have been computed for some physics process, and found that the cross section increases the kinematics changes. As the results, the analysis results could be impacted by these high order QCD corrections. We use standard Monte Carlo generator for LO, as well as MC@NLO for NLO and ResBos for NNLO at 7 TeV of LHC to evaluate this impact for physics channel of the Higgs, mass at 165 GeV, to WW, then W decay to lepton and neutrino as the final states. We found the signal rate could be effected by ratio of 1:2.6:3.4 for LO, NLO and NNLO using the same standard H -> WW -> lvlv searching analysis process.(6)
C1 [Wang, Jian; Chen, Guoming] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
[Wu, Weimin] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Wang, JA (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
NR 6
TC 0
Z9 0
U1 0
U2 0
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 0217-7323
J9 MOD PHYS LETT A
JI Mod. Phys. Lett. A
PD NOV 30
PY 2010
VL 25
IS 36
BP 3027
EP 3031
DI 10.1142/S0217732310034146
PG 5
WC Physics, Nuclear; Physics, Particles & Fields; Physics, Mathematical
SC Physics
GA 677PX
UT WOS:000284005400003
ER
PT J
AU Datye, A
Wu, KH
Gomes, G
Monroy, V
Lin, HT
Vleugels, J
Vanmeensel, K
AF Datye, Amit
Wu, Kuang-Hsi
Gomes, George
Monroy, Vivana
Lin, Hua-Tay
Vleugels, Jozef
Vanmeensel, Kim
TI Synthesis, microstructure and mechanical properties of Yttria Stabilized
Zirconia (3YTZP) - Multi-Walled Nanotube (MWNTs) nanocomposite by direct
in-situ growth of MWNTs on Zirconia particles
SO COMPOSITES SCIENCE AND TECHNOLOGY
LA English
DT Article
DE Carbon nanotubes; Ceramic-matrix composites; Mechanical properties;
Scanning/transmission electron microscopy (STEM); Chemical vapor
deposition (CVD)
ID MULTIWALLED CARBON NANOTUBES; FIBER-REINFORCED CERAMICS; MATRIX
COMPOSITES; CVD; CRYSTALLIZATION; STRENGTH; METALS
AB In this research, Yttria Stabilized Zirconia (3YTZP) - carbon nanotube (CNT) composites are fabricated by direct in-situ growth of CNTs on the Zirconia particles, followed by densification via the Spark Plasma Sintering (SPS) technique. Scanning electron microscopy analysis of the 3YTZP-CNT powders shows uniform distribution of CNTs without the formation of agglomerates frequently seen with the traditional ex-situ mixing of CNTs in ceramic compositions. The samples were sintered to nearly 100% theoretical density and with a finer grain size microstructure. High Resolution Transmission Electron Microscopy (HRTEM) and Raman Spectroscopy confirm CNT retention in the sintered nanocomposites up to 1600 degrees C. The flexural strength increases from similar to 260 MPa for samples without CNTs sintered at 1600 degrees C to 312 MPa for samples with similar to 4 wt.% CNTs sintered at the same temperature. A corresponding increase in the indentation fracture toughness is also observed for samples with similar to 4 wt.% CNTs sintered at 1600 degrees C as compared to samples sintered at the same temperature without CNTs. Published by Elsevier Ltd.
C1 [Wu, Kuang-Hsi; Gomes, George; Monroy, Vivana] Florida Int Univ, Dept Mech & Mat Engn, Miami, FL 33174 USA.
[Datye, Amit] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
[Lin, Hua-Tay] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Vleugels, Jozef; Vanmeensel, Kim] Katholieke Univ Leuven, Dept Met & Mat Engn, Louvain, Belgium.
RP Wu, KH (reprint author), Florida Int Univ, Dept Mech & Mat Engn, Miami, FL 33174 USA.
EM wu@fiu.edu
RI Vleugels, Jozef/C-8262-2017
OI Vleugels, Jozef/0000-0003-4432-4675
FU Office of Naval Research (ONR) [N000140610131]
FX The authors would like to acknowledge support from the Office of Naval
Research (ONR) Grant Number # N000140610131 and Dr. I. Perez of ONR for
his support.
NR 51
TC 26
Z9 27
U1 3
U2 34
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0266-3538
J9 COMPOS SCI TECHNOL
JI Compos. Sci. Technol.
PD NOV 30
PY 2010
VL 70
IS 14
BP 2086
EP 2092
DI 10.1016/j.compscitech.2010.08.005
PG 7
WC Materials Science, Composites
SC Materials Science
GA 674PK
UT WOS:000283759400008
ER
PT J
AU McKinlay, JB
Laivenieks, M
Schindler, BD
McKinlay, AA
Siddaramappa, S
Challacombe, JF
Lowry, SR
Clum, A
Lapidus, AL
Burkhart, KB
Harkins, V
Vieille, C
AF McKinlay, James B.
Laivenieks, Maris
Schindler, Bryan D.
McKinlay, Anastasia A.
Siddaramappa, Shivakumara
Challacombe, Jean F.
Lowry, Stephen R.
Clum, Alicia
Lapidus, Alla L.
Burkhart, Kirk B.
Harkins, Victoria
Vieille, Claire
TI A genomic perspective on the potential of Actinobacillus succinogenes
for industrial succinate production
SO BMC GENOMICS
LA English
DT Article
ID NONTYPABLE HAEMOPHILUS-INFLUENZAE; MULTOCIDA GENE-EXPRESSION; REDUCED
NEUTRAL RED; ESCHERICHIA-COLI; PASTEURELLA-MULTOCIDA;
MANNHEIMIA-SUCCINICIPRODUCENS; FERMENTATIVE METABOLISM; IRON
ACQUISITION; SCALE ANALYSIS; SEROTYPE-B
AB Background: Succinate is produced petrochemically from maleic anhydride to satisfy a small specialty chemical market. If succinate could be produced fermentatively at a price competitive with that of maleic anhydride, though, it could replace maleic anhydride as the precursor of many bulk chemicals, transforming a multi-billion dollar petrochemical market into one based on renewable resources. Actinobacillus succinogenes naturally converts sugars and CO2 into high concentrations of succinic acid as part of a mixed-acid fermentation. Efforts are ongoing to maximize carbon flux to succinate to achieve an industrial process.
Results: Described here is the 2.3 Mb A. succinogenes genome sequence with emphasis on A. succinogenes's potential for genetic engineering, its metabolic attributes and capabilities, and its lack of pathogenicity. The genome sequence contains 1,690 DNA uptake signal sequence repeats and a nearly complete set of natural competence proteins, suggesting that A. succinogenes is capable of natural transformation. A. succinogenes lacks a complete tricarboxylic acid cycle as well as a glyoxylate pathway, and it appears to be able to transport and degrade about twenty different carbohydrates. The genomes of A. succinogenes and its closest known relative, Mannheimia succiniciproducens, were compared for the presence of known Pasteurellaceae virulence factors. Both species appear to lack the virulence traits of toxin production, sialic acid and choline incorporation into lipopolysaccharide, and utilization of hemoglobin and transferrin as iron sources. Perspectives are also given on the conservation of A. succinogenes genomic features in other sequenced Pasteurellaceae.
Conclusions: Both A. succinogenes and M. succiniciproducens genome sequences lack many of the virulence genes used by their pathogenic Pasteurellaceae relatives. The lack of pathogenicity of these two succinogens is an exciting prospect, because comparisons with pathogenic Pasteurellaceae could lead to a better understanding of Pasteurellaceae virulence. The fact that the A. succinogenes genome encodes uptake and degradation pathways for a variety of carbohydrates reflects the variety of carbohydrate substrates available in the rumen, A. succinogenes's natural habitat. It also suggests that many different carbon sources can be used as feedstock for succinate production by A. succinogenes.
C1 [McKinlay, James B.; Laivenieks, Maris; Schindler, Bryan D.; Burkhart, Kirk B.; Harkins, Victoria; Vieille, Claire] Michigan State Univ, Dept Microbiol & Mol Genet, E Lansing, MI 48824 USA.
[McKinlay, Anastasia A.] Univ Washington, Dept Genome Sci & Med, Seattle, WA 98195 USA.
[Siddaramappa, Shivakumara; Challacombe, Jean F.] DOE Joint Genome Inst, Los Alamos, NM 87545 USA.
[Siddaramappa, Shivakumara; Challacombe, Jean F.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Lowry, Stephen R.; Clum, Alicia; Lapidus, Alla L.] DOE Joint Genome Inst, Walnut Creek, CA 94598 USA.
[Vieille, Claire] Michigan State Univ, Dept Biochem & Mol Biol, E Lansing, MI 48824 USA.
[McKinlay, James B.] Univ Washington, Dept Microbiol, Seattle, WA 98195 USA.
[Burkhart, Kirk B.] Univ Wisconsin, Genet Lab, Madison, WI 53706 USA.
[Harkins, Victoria] Michigan State Univ, Dept Zool, E Lansing, MI 48824 USA.
RP Vieille, C (reprint author), Michigan State Univ, Dept Microbiol & Mol Genet, 2215 Biomed Biophys Sci Bldg, E Lansing, MI 48824 USA.
EM vieille@msu.edu
RI Lapidus, Alla/I-4348-2013
OI Lapidus, Alla/0000-0003-0427-8731
FU National Science Foundation [BES-0224596]; Michigan State University
(MSU); Michigan Economic Development Corporation; Office of Science of
the U.S. Department of Energy [DE AC02 05CH11231]
FX This work was supported by the National Science Foundation grant
BES-0224596, by a grant from the Michigan State University (MSU)
Research Excellence Fund, and by a grant from the Michigan Economic
Development Corporation. We wish to thank Dr. J. Gregory Zeikus for
allowing us to continue his work on this fascinating and useful
organism. We are deeply grateful to the JGI for sequencing the A.
succinogenes genome and providing us with the automatic annotation and
useful genome analysis tools. The U.S. Department of Energy Joint Genome
Institute work was supported by the Office of Science of the U.S.
Department of Energy under Contract No. DE-AC02-05CH11231. We also thank
Drs. M. Bagdasarian, J.A. Breznak, C.A. Reddy, and Y. Shachar-Hill for
valuable insights and discussions. We acknowledge Dr. Carlos Araya for
assistance with Python programming. We are grateful to Drs. Peter
Bergholz and Hector Alaya-del-Rio for expert advice on manual genome
annotations. We thank Christopher B. Jambor for his valuable editing
advice.
NR 79
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Z9 442
U1 6
U2 23
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1471-2164
J9 BMC GENOMICS
JI BMC Genomics
PD NOV 30
PY 2010
VL 11
AR 680
DI 10.1186/1471-2164-11-680
PG 16
WC Biotechnology & Applied Microbiology; Genetics & Heredity
SC Biotechnology & Applied Microbiology; Genetics & Heredity
GA 697YM
UT WOS:000285555700001
PM 21118570
ER
PT J
AU Komanicky, V
Iddir, H
Chang, KC
Menzel, A
Karapetrov, G
Hennessy, DC
Zapol, P
You, H
AF Komanicky, Vladimir
Iddir, Hakim
Chang, Kee-Chul
Menzel, Andreas
Karapetrov, Goran
Hennessy, Daniel C.
Zapol, Peter
You, Hoydoo
TI Fabrication and characterization of platinum nanoparticle arrays of
controlled size, shape and orientation
SO ELECTROCHIMICA ACTA
LA English
DT Article; Proceedings Paper
CT 60th Annual Meeting of ISE
CY AUG 16-21, 2009
CL Peking Univ, Beijing, PEOPLES R CHINA
HO Peking Univ
DE Nanocrystal; Lithography; Electrocatalysis; Oxygen-reduction reaction;
Density functional theory
ID SINGLE-CRYSTAL SURFACES; OXYGEN REDUCTION; ELECTROOXIDATION; ADSORPTION;
METALS; ENERGY; SRTIO3; CO
AB We present a rigorous approach for the shape design of supported metal nanoparticle catalysts morphologically identical to each other and epitaxially grown on strontium titanate substrates using electron beam lithography We predict the particle shapes using Wulff construction based on density functional theory calculations of surface energies Then according to the theoretical predictions we are able to tweak morphologies of the already produced nanocrystals by changing annealing conditions The ability to design produce and characterize the catalyst nanoparticles allows us to relate microscopic morphologies with macroscopic oxygen-reduction activities in perchloric acid [Komanicky et al J Am Chem Soc 131 (2009)5732] The unexpectedly high oxygen-reduction activities proportional to inactive (1 0 0) facets led us to suggest a model where the reaction intermediates can cross over to neighboring facets in nanoscale proximity (C) 2010 Elsevier Ltd All rights reserved
C1 [Komanicky, Vladimir; Iddir, Hakim; Chang, Kee-Chul; Menzel, Andreas; Karapetrov, Goran; Hennessy, Daniel C.; Zapol, Peter; You, Hoydoo] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Komanicky, Vladimir] Safarik Univ, Fac Sci, Kosice 04154, Slovakia.
[Menzel, Andreas] Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
RP You, H (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
RI Menzel, Andreas/C-4388-2012; Zapol, Peter/G-1810-2012; Chang,
Kee-Chul/O-9938-2014; You, Hoydoo/A-6201-2011; Karapetrov,
Goran/C-2840-2008
OI Menzel, Andreas/0000-0002-0489-609X; Zapol, Peter/0000-0003-0570-9169;
Chang, Kee-Chul/0000-0003-1775-2148; You, Hoydoo/0000-0003-2996-9483;
Karapetrov, Goran/0000-0003-1113-0137
NR 22
TC 6
Z9 6
U1 2
U2 41
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0013-4686
J9 ELECTROCHIM ACTA
JI Electrochim. Acta
PD NOV 30
PY 2010
VL 55
IS 27
SI SI
BP 7934
EP 7938
DI 10.1016/j.electacta.2010.03.024
PG 5
WC Electrochemistry
SC Electrochemistry
GA 682WW
UT WOS:000284434700022
ER
PT J
AU Andrejczuk, M
Grabowski, WW
Reisner, J
Gadian, A
AF Andrejczuk, M.
Grabowski, W. W.
Reisner, J.
Gadian, A.
TI Cloud-aerosol interactions for boundary layer stratocumulus in the
Lagrangian Cloud Model
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
ID STOCHASTIC COLLECTION EQUATION; LARGE-EDDY SIMULATIONS; NOCTURNAL MARINE
STRATOCUMULUS; NUMERICAL-SIMULATION; EXPLICIT MICROPHYSICS; CONVECTIVE
CLOUDS; FLUX METHOD; ENTRAINMENT; FRAMEWORK; PARTICLES
AB Lagrangian Cloud Model (LCM) is a mixed Eulerian/Lagrangian approach to atmospheric large eddy simulation (LES), with two-way coupling between Eulerian dynamics and thermodynamics and Lagrangian microphysics. Since Lagrangian representation of microphysics does not suffer from numerical diffusion in the radius space and solves full droplet growth equations, it may be considered an alternative for the bin approach. This paper documents the development of LCM to include collision/coalescence processes. The proposed algorithm maps Lagrangian parcels collision/coalescence events on the specified two-dimensional grid, with the first dimension spanning aerosol radius and the second dimension spanning the cloud droplet radius. The proposed approach is capable of representation of aerosol activation, deactivation, transport inside the droplets, and processing by clouds and in the future may be used to investigate details of these processes. As an illustration, LCM with collision/coalescence is used to investigate effects of aerosols on cloud microphysics and dynamics for a marine stratocumulus cloud. Two extreme cases are considered that represent low and high aerosol concentrations. It is shown that the aerosol type significantly affects cloud microphysics as well as cloud dynamics. In agreement with previous studies, a larger entrainment rate is simulated for the high aerosol concentration. For the low aerosol concentration, intense collision/coalescence and drizzle modify the aerosol size distribution, reducing the concentration in the dry radius range of 0.02 to 0.2 mu m and increasing the concentration for dry radii larger than 0.3 mu m.
C1 [Andrejczuk, M.; Gadian, A.] Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England.
[Grabowski, W. W.] Natl Ctr Atmospher Res, Mesoscale & Microscale Meteorol Div, Boulder, CO 80305 USA.
[Reisner, J.] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87544 USA.
RP Andrejczuk, M (reprint author), Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England.
EM m.andrejczuk@leeds.ac.uk
FU NERC; NOAA [NA08OAR4310543]; DOE [DE-FG02-08ER64574]
FX This work was supported by NERC funding for the VOCALS project, NCAS
computer time on HECToR, and BADC data centre. W. W. G. acknowledges
support from NOAA grant NA08OAR4310543 and DOE ARM grant
DE-FG02-08ER64574.
NR 33
TC 24
Z9 24
U1 2
U2 6
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
EI 2169-8996
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD NOV 30
PY 2010
VL 115
AR D22214
DI 10.1029/2010JD014248
PG 13
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 690PL
UT WOS:000285016600004
ER
PT J
AU Choi, K
Tong, W
Mariani, RD
Burkes, DE
Munir, ZA
AF Choi, Kwanghoon
Tong, Wen
Mariani, Robert D.
Burkes, Douglas E.
Munir, Zuhair A.
TI Densification of nano-CeO2 ceramics as nuclear oxide surrogate by spark
plasma sintering (vol 404, pg 210, 2010)
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Correction
C1 [Choi, Kwanghoon; Tong, Wen; Munir, Zuhair A.] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA.
[Mariani, Robert D.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
[Burkes, Douglas E.] Natl Nucl Secur Adm, Washington, DC 20585 USA.
RP Munir, ZA (reprint author), Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA.
NR 1
TC 0
Z9 0
U1 0
U2 6
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
J9 J NUCL MATER
JI J. Nucl. Mater.
PD NOV 30
PY 2010
VL 406
IS 3
BP 371
EP 371
DI 10.1016/j.jnucmat.2010.10.017
PG 1
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA 687CB
UT WOS:000284750400013
ER
PT J
AU Hinderliter, PM
Minard, KR
Orr, G
Chrisler, WB
Thrall, BD
Pounds, JG
Teeguarden, JG
AF Hinderliter, Paul M.
Minard, Kevin R.
Orr, Galya
Chrisler, William B.
Thrall, Brian D.
Pounds, Joel G.
Teeguarden, Justin G.
TI ISDD: A computational model of particle sedimentation, diffusion and
target cell dosimetry for in vitro toxicity studies
SO PARTICLE AND FIBRE TOXICOLOGY
LA English
DT Article
ID MULTIPLE-PATH MODEL; PHARMACOKINETIC MODEL; PBPK MODEL; SILICA
NANOPARTICLES; LIFE STAGES; RAT LUNG; KINETICS; DEPOSITION; CLEARANCE;
RETENTION
AB Background: The difficulty of directly measuring cellular dose is a significant obstacle to application of target tissue dosimetry for nanoparticle and microparticle toxicity assessment, particularly for in vitro systems. As a consequence, the target tissue paradigm for dosimetry and hazard assessment of nanoparticles has largely been ignored in favor of using metrics of exposure (e.g. mu g particle/mL culture medium, particle surface area/mL, particle number/mL). We have developed a computational model of solution particokinetics (sedimentation, diffusion) and dosimetry for non-interacting spherical particles and their agglomerates in monolayer cell culture systems. Particle transport to cells is calculated by simultaneous solution of Stokes Law (sedimentation) and the Stokes-Einstein equation (diffusion).
Results: The In vitro Sedimentation, Diffusion and Dosimetry model (ISDD) was tested against measured transport rates or cellular doses for multiple sizes of polystyrene spheres (20-1100 nm), 35 nm amorphous silica, and large agglomerates of 30 nm iron oxide particles. Overall, without adjusting any parameters, model predicted cellular doses were in close agreement with the experimental data, differing from as little as 5% to as much as three-fold, but in most cases approximately two-fold, within the limits of the accuracy of the measurement systems. Applying the model, we generalize the effects of particle size, particle density, agglomeration state and agglomerate characteristics on target cell dosimetry in vitro.
Conclusions: Our results confirm our hypothesis that for liquid-based in vitro systems, the dose-rates and target cell doses for all particles are not equal; they can vary significantly, in direct contrast to the assumption of dose-equivalency implicit in the use of mass-based media concentrations as metrics of exposure for dose-response assessment. The difference between equivalent nominal media concentration exposures on a mu g/mL basis and target cell doses on a particle surface area or number basis can be as high as three to six orders of magnitude. As a consequence, in vitro hazard assessments utilizing mass-based exposure metrics have inherently high errors where particle number or surface areas target cells doses are believed to drive response. The gold standard for particle dosimetry for in vitro nanotoxicology studies should be direct experimental measurement of the cellular content of the studied particle. However, where such measurements are impractical, unfeasible, and before such measurements become common, particle dosimetry models such as ISDD provide a valuable, immediately useful alternative, and eventually, an adjunct to such measurements.
C1 [Hinderliter, Paul M.; Minard, Kevin R.; Chrisler, William B.; Thrall, Brian D.; Pounds, Joel G.; Teeguarden, Justin G.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA.
[Orr, Galya] Pacific NW Natl Lab, Environm & Mol Sci Lab, Richland, WA 99352 USA.
RP Teeguarden, JG (reprint author), Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA.
EM Justin.Teeguarden@pnl.gov
OI Teeguarden, Justin/0000-0003-3817-4391; Pounds, Joel/0000-0002-6616-1566
FU Battelle Memorial Institute (CRADA) [PNNL/284]; NIH [ES016212,
U19-ES019544]; DOE [DE-AC05-76RLO 1830]; U.S. Department of Energy
through the Environmental Biomarkers Initiative at Pacific Northwest
National Laboratory (PNNL)
FX Support for this research was provided by Multi-Scale Toxicology
Research Initiative sponsored by Battelle Memorial Institute (CRADA
#PNNL/284), as well as NIH grants ES016212 and U19-ES019544. Some of the
experimental work was performed in the Environmental Molecular Sciences
Laboratory, a U.S. Department of Energy, Office of Biological and
Environmental Research national scientific user facility at Pacific
Northwest National Laboratory (PNNL). PNNL is multi-program national
laboratory operated by Battelle for the DOE under Contract No.
DE-AC05-76RLO 1830. Portions of this work were funded by the U.S.
Department of Energy through the Environmental Biomarkers Initiative at
Pacific Northwest National Laboratory (PNNL).
NR 59
TC 158
Z9 158
U1 8
U2 56
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1743-8977
J9 PART FIBRE TOXICOL
JI Part. Fibre Toxicol.
PD NOV 30
PY 2010
VL 7
AR 36
DI 10.1186/1743-8977-7-36
PG 19
WC Toxicology
SC Toxicology
GA 700YY
UT WOS:000285782700001
PM 21118529
ER
PT J
AU Carr, CW
Bude, JD
DeMange, P
AF Carr, C. W.
Bude, J. D.
DeMange, P.
TI Laser-supported solid-state absorption fronts in silica
SO PHYSICAL REVIEW B
LA English
DT Article
AB We develop a model based on simulation and extensive experimentation that explains the behavior of solid-state laser-supported absorption fronts generated in fused silica during high intensity (up to 5 GW/cm(2)) laser exposure. Both experiments and simulations show that the absorption front velocity is constant in time and is nearly linear in laser intensity. Further, this model can explain the dependence of laser damage site size on these parameters. We show that these absorption fronts naturally result from the combination of high-temperature-activated deep subband-gap optical absorptivity, free-electron transport, and thermal diffusion in defect-free silica for temperatures up to 15 000 K and pressures < 10 GPa. The regime of parameter space critical to this problem spans and extends that measured by other means. It serves as a platform for understanding general laser-matter interactions in dielectrics under a variety of conditions.
C1 [Carr, C. W.; Bude, J. D.; DeMange, P.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Carr, CW (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA.
RI Carr, Chris/F-7163-2013
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-pAC52-07NA27344]; LLNL office of LDRD [LLNL-JRNL-423847]
FX The authors would like to thank M. L. Spaeth, B. Sadigh, J. Stolken, M.
D. Feit, N. Shen, and the crew of OSL for their assistance in this work.
This work is performed under the auspices of the U.S. Department of
Energy by Lawrence Livermore National Laboratory under Contract No.
DE-pAC52-07NA27344 and funded through LLNL office of LDRD.
(LLNL-JRNL-423847).
NR 25
TC 55
Z9 58
U1 5
U2 17
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 30
PY 2010
VL 82
IS 18
AR 184304
DI 10.1103/PhysRevB.82.184304
PG 7
WC Physics, Condensed Matter
SC Physics
GA V23ZW
UT WOS:000208381700001
ER
PT J
AU Yang, SM
Jo, JY
Kim, TH
Yoon, JG
Song, TK
Lee, HN
Marton, Z
Park, S
Jo, Y
Noh, TW
AF Yang, S. M.
Jo, J. Y.
Kim, T. H.
Yoon, J. -G.
Song, T. K.
Lee, H. N.
Marton, Z.
Park, S.
Jo, Y.
Noh, T. W.
TI ac dynamics of ferroelectric domains from an investigation of the
frequency dependence of hysteresis loops
SO PHYSICAL REVIEW B
LA English
DT Article
ID THIN-FILMS; WALL DYNAMICS; NUCLEATION; REVERSAL; KINETICS; GROWTH
AB We investigated the pinning dominated domain-wall dynamics under an ac field by studying the frequency (f) dependence of hysteresis loops of a uniaxial ferroelectric (FE) system. We measured the fully saturated polarization-electric field (P-E) hysteresis loops of high-quality epitaxial 100-nm-thick PbZr0.2Ti0.8O3 capacitors at various f (5-2000 Hz) and temperatures T (10-300 K). We observed that the coercive field EC is proportional to f(beta) with two scaling regions, which was also reported earlier in magnetic systems [T. A. Moore and J. A. C. Bland, J. Phys.: Condens. Matter 16, R1369 (2004), and references therein]. In addition, we observed that the two scaling regions of EC vs f exist at all measured T. We found that the existence of the two scaling regions should come from a dynamic crossover between the creep and flow regimes of the FE domain-wall motions. By extending the theory of Nattermann et al., which was originally proposed for impure magnet systems [T. Nattermann, V. Pokrovsky, and V. M. Vinokur, Phys. Rev. Lett. 87, 197005 (2001)], to the disordered FE systems, we obtained analytical expressions for the dynamic crossovers between the relaxation and creep, and between the creep and flow regimes. By comparing with the experimental data from our fully saturated P-E hysteresis loop measurements, we could construct a T-E dynamic phase diagram with f as a parameter for hysteretic FE domain dynamics in the presence of an ac field.
C1 [Yang, S. M.; Jo, J. Y.; Kim, T. H.; Noh, T. W.] Seoul Natl Univ, Dept Phys & Astron, ReCFI, Seoul 151747, South Korea.
[Yoon, J. -G.] Univ Suwon, Dept Phys, Hwaseong 445743, Gyunggi Do, South Korea.
[Song, T. K.] Changwon Natl Univ, Sch Nano & Adv Mat Engn, Chang Won 641773, Gyeongnam, South Korea.
[Lee, H. N.; Marton, Z.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Marton, Z.] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA.
[Park, S.; Jo, Y.] Korea Basic Sci Inst, Div Mat Sci, Taejon 305333, South Korea.
RP Noh, TW (reprint author), Seoul Natl Univ, Dept Phys & Astron, ReCFI, Seoul 151747, South Korea.
EM twnoh@snu.ac.kr
RI Lee, Ho Nyung/K-2820-2012; Noh, Tae Won /K-9405-2013; Kim, Tae
Heon/C-5935-2015; Yang, Sang Mo/Q-2455-2015
OI Lee, Ho Nyung/0000-0002-2180-3975; Kim, Tae Heon/0000-0003-4835-0707;
Yang, Sang Mo/0000-0003-1809-2938
FU Korea government (MEST) [2009-0080567, 2010-0020416]; Division of
Materials Sciences and Engineering, Office of Basic Energy Sciences,
U.S. Department of Energy
FX This research was supported by the National Research Foundation of Korea
(NRF) grant funded by the Korea government (MEST) (Grants No.
2009-0080567 and No. 2010-0020416). The work at Oak Ridge National
Laboratory (H.N.L.) was sponsored by the Division of Materials Sciences
and Engineering, Office of Basic Energy Sciences, U.S. Department of
Energy.
NR 30
TC 29
Z9 30
U1 0
U2 31
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 30
PY 2010
VL 82
IS 17
AR 174125
DI 10.1103/PhysRevB.82.174125
PG 7
WC Physics, Condensed Matter
SC Physics
GA 760HQ
UT WOS:000290315800002
ER
PT J
AU Esbensen, H
Jiang, CL
Stefanini, AM
AF Esbensen, H.
Jiang, C. L.
Stefanini, A. M.
TI Hindrance in the fusion of Ca-48+Ca-48
SO PHYSICAL REVIEW C
LA English
DT Article
ID INELASTIC-SCATTERING
AB The coupled-channels technique is applied to analyze recent fusion data for Ca-48 + Ca-48. The calculations include the excitations of the low-lying 2(+), 3(-), and 5(-) states in projectile and target, and the influence of mutual excitations as well as the two-phonon quadrupole excitations is also investigated. The ion-ion potential is obtained by double-folding the nuclear densities of the reacting nuclei with the M3Y + repulsion effective interaction but a standard Woods-Saxon potential is also applied. The data exhibit a strong hindrance at low energy compared to calculations that are based on a standard Woods-Saxon potential but they can be reproduced quite well by applying the M3Y + repulsion potential with an adjusted radius of the nuclear density. The influence of the polarization of high-lying states on the extracted radius is discussed.
C1 [Esbensen, H.; Jiang, C. L.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Stefanini, A. M.] Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Padova, Italy.
RP Esbensen, H (reprint author), Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
FU US Department of Energy, Office of Nuclear Physics [DE-AC02-06CH11357]
FX One of the authors (H.E.) acknowledges discussions with S. Misicu about
double-folding potentials. This work was supported by the US Department
of Energy, Office of Nuclear Physics, Contract No. DE-AC02-06CH11357.
NR 22
TC 40
Z9 41
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD NOV 30
PY 2010
VL 82
IS 5
AR 054621
DI 10.1103/PhysRevC.82.054621
PG 8
WC Physics, Nuclear
SC Physics
GA 713JT
UT WOS:000286735000006
ER
PT J
AU Yang, F
Waters, KM
Miller, JH
Gritsenko, MA
Zhao, R
Du, XX
Livesay, EA
Purvine, SO
Monroe, ME
Wang, YC
Camp, DG
Smith, RD
Stenoien, DL
AF Yang, Feng
Waters, Katrina M.
Miller, John H.
Gritsenko, Marina A.
Zhao, Rui
Du, Xiuxia
Livesay, Eric A.
Purvine, Samuel O.
Monroe, Matthew E.
Wang, Yingchun
Camp, David G., II
Smith, Richard D.
Stenoien, David L.
TI Phosphoproteomics Profiling of Human Skin Fibroblast Cells Reveals
Pathways and Proteins Affected by Low Doses of Ionizing Radiation
SO PLOS ONE
LA English
DT Article
ID TUMOR-SUPPRESSOR GENE; DNA-DAMAGE; RADIOADAPTIVE RESPONSE;
MASS-SPECTROMETRY; COMPLEX FACT; KAPPA-B; PHOSPHORYLATION; EXPRESSION;
ACTIVATION; APOPTOSIS
AB Background: High doses of ionizing radiation result in biological damage; however, the precise relationships between long-term health effects, including cancer, and low-dose exposures remain poorly understood and are currently extrapolated using high-dose exposure data. Identifying the signaling pathways and individual proteins affected at the post-translational level by radiation should shed valuable insight into the molecular mechanisms that regulate dose-dependent responses to radiation.
Principal Findings: We have identified 7117 unique phosphopeptides (2566 phosphoproteins) from control and irradiated (2 and 50 cGy) primary human skin fibroblasts 1 h post-exposure. Semi-quantitative label-free analyses were performed to identify phosphopeptides that are apparently altered by radiation exposure. This screen identified phosphorylation sites on proteins with known roles in radiation responses including TP53BP1 as well as previously unidentified radiation-responsive proteins such as the candidate tumor suppressor SASH1. Bioinformatic analyses suggest that low and high doses of radiation affect both overlapping and unique biological processes and suggest a role for MAP kinase and protein kinase A (PKA) signaling in the radiation response as well as differential regulation of p53 networks at low and high doses of radiation.
Conclusions: Our results represent the most comprehensive analysis of the phosphoproteomes of human primary fibroblasts exposed to multiple doses of ionizing radiation published to date and provide a basis for the systems-level identification of biological processes, molecular pathways and individual proteins regulated in a dose dependent manner by ionizing radiation. Further study of these modified proteins and affected networks should help to define the molecular mechanisms that regulate biological responses to radiation at different radiation doses and elucidate the impact of low-dose radiation exposure on human health.
C1 [Yang, Feng; Waters, Katrina M.; Gritsenko, Marina A.; Zhao, Rui; Du, Xiuxia; Livesay, Eric A.; Purvine, Samuel O.; Monroe, Matthew E.; Camp, David G., II; Smith, Richard D.; Stenoien, David L.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Miller, John H.] Washington State Univ Tricities, Richland, WA USA.
[Wang, Yingchun] Chinese Acad Sci, Inst Genet & Dev Biol, Beijing, Peoples R China.
RP Yang, F (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM david.stenoien@pnl.gov
RI Smith, Richard/J-3664-2012
OI Smith, Richard/0000-0002-2381-2349
FU Department of Energy Low Dose Radiation Research Program National
Institutes of Health/National Center for Research Resources Proteomics
Center at Pacific Northwest National Laboratory [RR18522]; Battelle
[DE-AC05-76RLO 1830]
FX Funding came from the Department of Energy Low Dose Radiation Research
Program National Institutes of Health/National Center for Research
Resources Proteomics Center at Pacific Northwest National Laboratory
(RR18522). The funders had no role in study design, data collection and
analysis, decision to publish, or preparation of the manuscript.; The
authors would like to thank Dr. William Morgan for helpful advice during
the preparation of this manuscript. Experiments and data analyses were
performed in the Environmental Molecular Sciences Laboratory, a DOE
national scientific user facility located at the Pacific Northwest
National Laboratory (PNNL) in Richland, Washington. PNNL is a
multiprogram national laboratory operated by Battelle for the DOE under
Contract DE-AC05-76RLO 1830.
NR 65
TC 9
Z9 10
U1 2
U2 13
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD NOV 30
PY 2010
VL 5
IS 11
AR e14152
DI 10.1371/journal.pone.0014152
PG 11
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 687DK
UT WOS:000284755100031
PM 21152398
ER
PT J
AU King, NP
Jacobitz, AW
Sawaya, MR
Goldschmidt, L
Yeates, TO
AF King, Neil P.
Jacobitz, Alex W.
Sawaya, Michael R.
Goldschmidt, Lukasz
Yeates, Todd O.
TI Structure and folding of a designed knotted protein
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE Anfinsen; energy landscape; folding kinetics; protein folding; topology
ID SINGLE-DOMAIN PROTEINS; ENERGY LANDSCAPE; DISULFIDE BOND; ARC REPRESSOR;
STABILITY; FUNNELS; STATE
AB A very small number of natural proteins have folded configurations in which the polypeptide backbone is knotted. Relatively little is known about the folding energy landscapes of such proteins, or how they have evolved. We explore those questions here by designing a unique knotted protein structure. Biophysical characterization and X-ray crystal structure determination show that the designed protein folds to the intended configuration, tying itself in a knot in the process, and that it folds reversibly. The protein folds to its native, knotted configuration approximately 20 times more slowly than a control protein, which was designed to have a similar tertiary structure but to be unknotted. Preliminary kinetic experiments suggest a complicated folding mechanism, providing opportunities for further characterization. The findings illustrate a situation where a protein is able to successfully traverse a complex folding energy landscape, though the amino acid sequence of the protein has not been subjected to evolutionary pressure for that ability. The success of the design strategy-connecting two monomers of an intertwined homodimer into a single protein chain-supports a model for evolution of knotted structures via gene duplication.
C1 [King, Neil P.; Jacobitz, Alex W.; Goldschmidt, Lukasz; Yeates, Todd O.] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA.
[Sawaya, Michael R.] Univ Calif Los Angeles, Howard Hughes Med Inst, Los Angeles, CA 90095 USA.
[Yeates, Todd O.] Univ Calif Los Angeles, UCLA DOE Inst Genom & Prote, Los Angeles, CA 90095 USA.
[Yeates, Todd O.] Univ Calif Los Angeles, Inst Mol Biol, Los Angeles, CA 90095 USA.
[Yeates, Todd O.] Univ Calif Los Angeles, Calif Nanosyst Inst, Los Angeles, CA 90095 USA.
RP Yeates, TO (reprint author), Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA.
EM yeates@mbi.ucla.edu
OI Yeates, Todd/0000-0001-5709-9839
FU National Institutes of Health [R01GM081652]
FX The authors thank Katelyn Connell and Susan Marqusee for assistance with
folding experiments, Martin Phillips for assistance with stopped-flow
fluorimetry, Inna Pashkov for technical assistance, and Sophie Jackson
for helpful comments on the manuscript. This work was supported by award
R01GM081652 from the National Institutes of Health.
NR 31
TC 57
Z9 57
U1 0
U2 13
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD NOV 30
PY 2010
VL 107
IS 48
BP 20732
EP 20737
DI 10.1073/pnas.1007602107
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 687ET
UT WOS:000284762400030
PM 21068371
ER
PT J
AU Clem, JR
AF Clem, John R.
TI Corbino-geometry Josephson weak links in thin superconducting films
SO PHYSICAL REVIEW B
LA English
DT Article
ID NONLOCAL INTERACTION; PHASE; JUNCTIONS; BARRIERS
AB I consider a Corbino-geometry superconducting-normal-superconducting Josephson weak link in a thin superconducting film, in which current enters at the origin, flows outward, passes through an annular Josephson weak link, and leaves radially. In contrast to sandwich-type annular Josephson junctions, in which the gauge-invariant phase difference obeys the sine-Gordon equation, here the gauge-invariant phase difference obeys an integral equation. I present exact solutions for the gauge-invariant phase difference across the weak link when it contains an integral number N of Josephson vortices and the current is zero. I then study the dynamics when a current is applied, and I derive the effective resistance and the viscous drag coefficient; I compare these results with those in sandwich-type junctions. I also calculate the critical current when there is no Josephson vortex in the weak link but there is a Pearl vortex nearby.
C1 [Clem, John R.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
[Clem, John R.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
RP Clem, JR (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
FU U.S. Department of Energy, Office of Basic Energy Science, Division of
Materials Sciences and Engineering; U.S. Department of Energy
[DE-AC02-07CH11358]
FX I thank J. E. Sadleir, R. H. Hadfield, M. G. Blamire, and V. G. Kogan
for stimulating comments and helpful suggestions. This work was
supported by the U.S. Department of Energy, Office of Basic Energy
Science, Division of Materials Sciences and Engineering. The research
was performed at the Ames Laboratory, which is operated for the U.S.
Department of Energy by Iowa State University under Contract No.
DE-AC02-07CH11358.
NR 25
TC 2
Z9 2
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 29
PY 2010
VL 82
IS 17
AR 174515
DI 10.1103/PhysRevB.82.174515
PG 11
WC Physics, Condensed Matter
SC Physics
GA 806DF
UT WOS:000293784900005
ER
PT J
AU Mukherjee, G
Chowdhury, P
Kondev, FG
Walker, PM
Dracoulis, GD
D'Alarcao, R
Shestakova, I
Abu Saleem, K
Ahmad, I
Carpenter, MP
Heinz, A
Janssens, RVF
Khoo, TL
Lauritsen, T
Lister, CJ
Seweryniak, D
Wiedenhoever, I
Cullen, DM
Wheldon, C
Balabanski, DL
Danchev, M
Goon, TM
Hartley, DJ
Riedinger, LL
Zeidan, O
Riley, MA
Kaye, RA
Sletten, G
AF Mukherjee, G.
Chowdhury, P.
Kondev, F. G.
Walker, P. M.
Dracoulis, G. D.
D'Alarcao, R.
Shestakova, I.
Abu Saleem, K.
Ahmad, I.
Carpenter, M. P.
Heinz, A.
Janssens, R. V. F.
Khoo, T. L.
Lauritsen, T.
Lister, C. J.
Seweryniak, D.
Wiedenhoever, I.
Cullen, D. M.
Wheldon, C.
Balabanski, D. L.
Danchev, M.
Goon, T. M.
Hartley, D. J.
Riedinger, L. L.
Zeidan, O.
Riley, M. A.
Kaye, R. A.
Sletten, G.
TI K-hindered decay of a six-quasiparticle isomer in Hf-176
SO PHYSICAL REVIEW C
LA English
DT Article
ID QUASI-PARTICLE STATES; FORBIDDEN TRANSITIONS; RESIDUAL INTERACTIONS;
ROTATIONAL BANDS; NUCLEI; REGION
AB The structure and decay properties of high-K isomers in Hf-176 have been studied using beam sweeping techniques and the Gammasphere multidetector array. A new Delta K = 8 decay branch, from a K-pi = 22(-), six-quasiparticle, isomeric (t(1/2) = 43 mu s) state at 4864 keV to the 20(-) state of a K-pi = 14(-) band, has been identified. The reduced hindrance factor per degree of K forbiddenness for this decay is measured to be unusually low (f(nu) = 3.2), which suggests K mixing in the states involved. The deduced interaction matrix elements are discussed within the context of relevant K-mixing scenarios. The 3266-keV state, previously interpreted as a K-pi = 16(+) intrinsic state, is reassigned as the J(pi) = 16(+) member of the band based on the K-pi = 15(+) state at 3080 keV. The systematics of f(nu) values as a function of the degree of forbiddenness is discussed in light of this change.
C1 [Mukherjee, G.; Chowdhury, P.; D'Alarcao, R.; Shestakova, I.] Univ Massachusetts Lowell, Dept Phys, Lowell, MA 01854 USA.
[Kondev, F. G.; Abu Saleem, K.; Ahmad, I.; Carpenter, M. P.; Heinz, A.; Janssens, R. V. F.; Khoo, T. L.; Lauritsen, T.; Lister, C. J.; Seweryniak, D.; Wiedenhoever, I.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Walker, P. M.] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England.
[Dracoulis, G. D.] Australian Natl Univ, Dept Nucl Phys, Res Sch Phys Sci & Engn, Canberra, ACT 0200, Australia.
[Cullen, D. M.] Univ Manchester, Dept Phys & Astron, Manchester M13 9PL, Lancs, England.
[Wheldon, C.] Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England.
[Balabanski, D. L.; Danchev, M.; Goon, T. M.; Hartley, D. J.; Riedinger, L. L.; Zeidan, O.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Riley, M. A.] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA.
[Kaye, R. A.] Purdue Univ Calumet, Dept Chem Phys, Hammond, IN 46323 USA.
[Sletten, G.] Niels Bohr Inst, DK-2100 Copenhagen, Denmark.
RP Chowdhury, P (reprint author), Univ Massachusetts Lowell, Dept Phys, Lowell, MA 01854 USA.
EM partha_chowdhury@uml.edu
RI Wheldon, Carl/F-9203-2013; Heinz, Andreas/E-3191-2014; Carpenter,
Michael/E-4287-2015
OI Carpenter, Michael/0000-0002-3237-5734
FU US Department of Energy, Office of Nuclear Physics [DE-FG02-94ER40848,
DE-AC02-06CH11357]; NSF [PHY-0554762]; EPSRC; STFC; AWE plc
FX The efforts of the technical staff of the ATLAS accelerator at Argonne
National Laboratory are acknowledged for providing an excellent beam of
48Ca. This work is supported by the US Department of Energy,
Office of Nuclear Physics, under Contracts No. DE-FG02-94ER40848 and No.
DE-AC02-06CH11357. One of the authors (D.H) acknowledges the support of
NSF Grant No. PHY-0554762. Support of EPSRC, STFC, and AWE plc is also
acknowledged.
NR 25
TC 8
Z9 9
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
EI 1089-490X
J9 PHYS REV C
JI Phys. Rev. C
PD NOV 29
PY 2010
VL 82
IS 5
AR 054316
DI 10.1103/PhysRevC.82.054316
PG 6
WC Physics, Nuclear
SC Physics
GA 713JO
UT WOS:000286734500004
ER
PT J
AU Alvine, KJ
Shutthanandan, V
Bennett, WD
Bonham, CC
Skorski, D
Pitman, SG
Dahl, ME
Henager, CH
AF Alvine, K. J.
Shutthanandan, V.
Bennett, W. D.
Bonham, C. C.
Skorski, D.
Pitman, S. G.
Dahl, M. E.
Henager, C. H., Jr.
TI High-pressure hydrogen materials compatibility of piezoelectric films
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID FERROELECTRIC-FILMS; INDUCED DEGRADATION; CAPACITORS; ELECTRODE
AB Hydrogen is well known for materials compatibility issues, including blistering and embrittlement in metals, which are challenges for its use as the next-generation "green" fuel. Beyond metals, hydrogen also degrades piezoelectric materials used as actuators used in direct injection hydrogen internal combustion engines. We present the materials compatibility studies of piezoelectric films in high-pressure hydrogen environments. Absorption of high-pressure hydrogen and composition changes were studied with an elastic recoil detection analysis and Rutherford back-scattering spectrometry in lead zirconate titanate and barium titanate thin films. Hydrogen surface degradation in the form of blistering and Pb mixing was also observed. (C) 2010 American Institute of Physics. [doi:10.1063/1.3517445]
C1 [Alvine, K. J.; Shutthanandan, V.; Bennett, W. D.; Bonham, C. C.; Skorski, D.; Pitman, S. G.; Dahl, M. E.; Henager, C. H., Jr.] Pacific NW Natl Lab, Richland, WA 99354 USA.
RP Alvine, KJ (reprint author), Pacific NW Natl Lab, Richland, WA 99354 USA.
EM kyle.alvine@pnl.gov
OI Henager, Chuck/0000-0002-8600-6803
FU U.S. Department of Energy (DOE) [DE-AC05-76RL01830]; DOE's Office of
Biological and Environmental Research at the Pacific Northwest National
Laboratory
FX This research was supported by the U.S. Department of Energy (DOE) under
Contract No. DE-AC05-76RL01830. A portion of the research was performed
using EMSL, a national scientific user facility sponsored by the DOE's
Office of Biological and Environmental Research located at the Pacific
Northwest National Laboratory.
NR 16
TC 5
Z9 5
U1 0
U2 9
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD NOV 29
PY 2010
VL 97
IS 22
AR 221911
DI 10.1063/1.3517445
PG 3
WC Physics, Applied
SC Physics
GA 689XT
UT WOS:000284965000027
ER
PT J
AU Horwat, D
Anders, A
AF Horwat, David
Anders, Andre
TI Ion acceleration and cooling in gasless self-sputtering
SO APPLIED PHYSICS LETTERS
LA English
DT Article
AB Copper plasma with hyperthermal directed velocity (8.8 eV) but very low temperature (0.6 eV) has been obtained using self-sputtering far above the runaway threshold. Ion energy distribution functions (IEDFs) were simultaneously measured at 34 locations. The IEDFs show the tail of the Thompson distribution near the magnetron target. They transform to shifted Maxwellians with the ions being accelerated and cooled. We deduce the existence of a highly asymmetric, pressure-driven potential hump which acts as a controlling "watershed" between the ion return flux and the expanding plasma. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3521264]
C1 [Horwat, David] Nancy Univ, Dept CP2S, Inst Jean Lamour, CNRS,UMR 7198,UPV Metz,Ecole Mines Nancy, F-54042 Nancy, France.
[Horwat, David; Anders, Andre] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Horwat, D (reprint author), Nancy Univ, Dept CP2S, Inst Jean Lamour, CNRS,UMR 7198,UPV Metz,Ecole Mines Nancy, Parc Saurupt,CS14234, F-54042 Nancy, France.
EM aanders@lbl.gov
RI Horwat, David/I-8740-2012; Anders, Andre/B-8580-2009;
OI Anders, Andre/0000-0002-5313-6505; Horwat, David/0000-0001-7938-7647
FU France-Berkeley Fund [2009065]; U.S. Department of Energy
[DE-AC02-05CH11231]
FX D. H. acknowledges support by the France-Berkeley Fund under Project No.
2009065. Discussions with J. Pelletier and J.-P. Bauer are gratefully
acknowledged. This work was supported by the U.S. Department of Energy
under Contract No. DE-AC02-05CH11231.
NR 14
TC 11
Z9 11
U1 0
U2 10
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD NOV 29
PY 2010
VL 97
IS 22
AR 221501
DI 10.1063/1.3521264
PG 3
WC Physics, Applied
SC Physics
GA 689XT
UT WOS:000284965000015
ER
PT J
AU Jung, H
Yu, YS
Lee, KS
Im, MY
Fischer, P
Bocklage, L
Vogel, A
Bolte, M
Meier, G
Kim, SK
AF Jung, Hyunsung
Yu, Young-Sang
Lee, Ki-Suk
Im, Mi-Young
Fischer, Peter
Bocklage, Lars
Vogel, Andreas
Bolte, Markus
Meier, Guido
Kim, Sang-Koog
TI Observation of coupled vortex gyrations by 70-ps-time- and
20-nm-space-resolved full-field magnetic transmission soft x-ray
microscopy
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID RESOLUTION
AB We employed time-and space-resolved full-field magnetic transmission soft x-ray microscopy to observe vortex-core gyrations in a pair of dipolar-coupled vortex-state Permalloy (Ni80Fe20) disks. The 70 ps temporal and 20 nm spatial resolution of the microscope enabled us to simultaneously measure vortex gyrations in both disks and to resolve the phases and amplitudes of both vortex-core positions. We observed their correlation for a specific vortex-state configuration. This work provides a robust and direct method of studying vortex gyrations in dipolar-coupled vortex oscillators. (C) 2010 American Institute of Physics. [doi:10.1063/1.3517496]
C1 [Jung, Hyunsung; Yu, Young-Sang; Lee, Ki-Suk; Kim, Sang-Koog] Seoul Natl Univ, Res Ctr Spin Dynam & Spin Wave Devices, Seoul 151744, South Korea.
[Jung, Hyunsung; Yu, Young-Sang; Lee, Ki-Suk; Kim, Sang-Koog] Seoul Natl Univ, Dept Mat Sci & Engn, Nanospin Lab, Seoul 151744, South Korea.
[Im, Mi-Young; Fischer, Peter] Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Xray Opt, Berkeley, CA 94720 USA.
[Bocklage, Lars; Vogel, Andreas; Bolte, Markus; Meier, Guido] Univ Hamburg, Inst Angew Phys, D-20355 Hamburg, Germany.
[Bocklage, Lars; Vogel, Andreas; Bolte, Markus; Meier, Guido] Univ Hamburg, Zentrum Mikrostrukturforsch, D-20355 Hamburg, Germany.
RP Kim, SK (reprint author), Seoul Natl Univ, Res Ctr Spin Dynam & Spin Wave Devices, Seoul 151744, South Korea.
EM sangkoog@snu.ac.kr
RI Bolte, Markus/A-6083-2009; MSD, Nanomag/F-6438-2012; Fischer,
Peter/A-3020-2010; Kim, Sang-Koog/J-4638-2014;
OI Fischer, Peter/0000-0002-9824-9343; Bocklage, Lars/0000-0001-9769-4173
FU Ministry of Education, Science and Technology [20100000706]; Director,
Office of Science, Office of Basic Energy Sciences, Materials Sciences
and Engineering Division of the U.S. Department of Energy
[DE-AC02-05-CH11231]; Deutsche Forschungsgemeinschaft [SFB 668, 1286];
City of Hamburg via Cluster of Excellence
FX This work was supported by the Basic Science Research Program through
the National Research Foundation of Korea funded by the Ministry of
Education, Science and Technology (Grant No. 20100000706). The operation
of the microscope was supported by the Director, Office of Science,
Office of Basic Energy Sciences, Materials Sciences and Engineering
Division of the U.S. Department of Energy under DE-AC02-05-CH11231.
Financial support of the Deutsche Forschungsgemeinschaft via the SFB 668
"Magnetismus vom Einzelatom zur Nanostruktur," and via the
Graduiertenkolleg 1286 "Functional Metal-Semiconductor Hybrid Systems"
as well as by the City of Hamburg via Cluster of Excellence
"Nano-Spintronics" is gratefully acknowledged.
NR 21
TC 37
Z9 38
U1 0
U2 19
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD NOV 29
PY 2010
VL 97
IS 22
AR 222502
DI 10.1063/1.3517496
PG 3
WC Physics, Applied
SC Physics
GA 689XT
UT WOS:000284965000050
ER
PT J
AU Yunus, M
Ruden, PP
Smith, DL
AF Yunus, M.
Ruden, P. P.
Smith, D. L.
TI Spin-polarized charge carrier injection by tunneling from ferromagnetic
contacts into organic semiconductors
SO APPLIED PHYSICS LETTERS
LA English
DT Article
AB Tunnel-injection of spin-polarized charge carriers from ferromagnetic contacts into organic semiconductors is modeled. Tunneling matrix elements and transition rates for the two spin types are calculated using a transfer Hamiltonian. The tunneling process occurs between extended states of the contact and model "molecular" orbitals. We explore the effects of the tunnel barrier height and of the ferromagnetic contact's Fermi wave vectors on the level of spin injection. The barrier height and the majority and minority spin Fermi wave vectors of the contact have strong effects on the sign and magnitude of spin injection. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3522657]
C1 [Yunus, M.; Ruden, P. P.] Univ Minnesota, Minneapolis, MN 55455 USA.
[Smith, D. L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Yunus, M (reprint author), Univ Minnesota, Minneapolis, MN 55455 USA.
EM yunus002@umn.edu
RI Riminucci, Alberto/D-7525-2011
OI Riminucci, Alberto/0000-0003-0976-1810
FU NSF [ECCS-0724886]; DoE Office of Basic Energy Sciences [08SPCE973]
FX This work was supported in part by NSF (Grant No. ECCS-0724886). Access
to the facilities of the Minnesota Supercomputing Institute for Digital
Simulation and Advanced Computation is gratefully acknowledged. Work at
Los Alamos National Laboratory was supported by DoE Office of Basic
Energy Sciences Work Proposal No. 08SPCE973.
NR 17
TC 2
Z9 2
U1 2
U2 11
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD NOV 29
PY 2010
VL 97
IS 22
AR 223304
DI 10.1063/1.3522657
PG 3
WC Physics, Applied
SC Physics
GA 689XT
UT WOS:000284965000079
ER
PT J
AU Bomm, J
Buchtemann, A
Fiore, A
Manna, L
Nelson, JH
Hill, D
van Sark, WGJHM
AF Bomm, Jana
Buechtemann, Andreas
Fiore, Angela
Manna, Liberato
Nelson, James H.
Hill, Diana
van Sark, Wilfried G. J. H. M.
TI Fabrication and spectroscopic studies on highly luminescent CdSe/CdS
nanorod polymer composites
SO BEILSTEIN JOURNAL OF NANOTECHNOLOGY
LA English
DT Article
DE CdSe; luminescence lifetime; nanocomposites; nanorods; quantum yield
ID CELLULOSE TRIACETATE FILMS; SEEDED GROWTH; NANOPARTICLES; ROD
AB Highly luminescent nanocomposites were prepared by incorporating CdSe/CdS core/shell nanorods into different polymer matrices. The resulting nanocomposites show high transparency of up to 93%. A photoluminescence quantum efficiency of 70% was obtained, with an optimum combination of nanorod (0.05 wt %) and at a UV-initiator concentration of 0.1 wt % for poly(lauryl methacrylate). Nanorods tend to agglomerate in cellulose triacetate.
C1 [Bomm, Jana; Buechtemann, Andreas] Fraunhofer Inst Appl Polymer Res IAP, D-14476 Potsdam, Germany.
[Fiore, Angela; Manna, Liberato] Natl Nanotechnol Lab INFM NNL, I-73100 Lecce, Italy.
[Nelson, James H.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Nelson, James H.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Hill, Diana] Univ Potsdam, Dept Chem, D-14476 Potsdam, Germany.
[van Sark, Wilfried G. J. H. M.] Univ Utrecht, Copernicus Inst Sustainable Dev & Innovat, NL-3584 CS Utrecht, Netherlands.
RP Bomm, J (reprint author), Fraunhofer Inst Appl Polymer Res IAP, Geiselbergstr 69, D-14476 Potsdam, Germany.
EM jana.bomm@googlemail.com
RI van Sark, Wilfried/C-5009-2009
OI van Sark, Wilfried/0000-0002-4738-1088
FU European Union [SES6-CT-2003-502620]
FX We acknowledge financial support from the European Union integrated
project "FULLSPECTRUM" (SES6-CT-2003-502620). We gratefully thank Marion
Schlawne and Dr. Manfred Pinnow from Fraunhofer Institute for Applied
Polymer Research (IAP) for TEM measurements.
NR 15
TC 34
Z9 34
U1 2
U2 26
PU BEILSTEIN-INSTITUT
PI FRANKFURT AM MAIN
PA TRAKEHNER STRASSE 7-9, FRANKFURT AM MAIN, 60487, GERMANY
SN 2190-4286
J9 BEILSTEIN J NANOTECH
JI Beilstein J. Nanotechnol.
PD NOV 29
PY 2010
VL 1
BP 94
EP 100
DI 10.3762/bjnano.1.11
PG 7
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA V21NK
UT WOS:000208214100001
PM 21977398
ER
PT J
AU Pechanova, O
Hsu, CY
Adams, JP
Pechan, T
Vandervelde, L
Drnevich, J
Jawdy, S
Adeli, A
Suttle, JC
Lawrence, AM
Tschaplinski, TJ
Seguin, A
Yuceer, C
AF Pechanova, Olga
Hsu, Chuan-Yu
Adams, Joshua P.
Pechan, Tibor
Vandervelde, Lindsay
Drnevich, Jenny
Jawdy, Sara
Adeli, Ardeshir
Suttle, Jeffrey C.
Lawrence, Amanda M.
Tschaplinski, Timothy J.
Seguin, Armand
Yuceer, Cetin
TI Apoplast proteome reveals that extracellular matrix contributes to
multistress response in poplar
SO BMC GENOMICS
LA English
DT Article
ID XYLEM SAP PROTEIN; POPULUS-DELTOIDES-BARTR; STRESSED COTTON LEAVES;
CELL-WALL-PEROXIDASE; RICE ORYZA-SATIVA; SUCROSE SYNTHASE; ANIONIC
PEROXIDASE; DISEASE RESISTANCE; MOLECULAR-CLONING; ABSCISIC-ACID
AB Background: Riverine ecosystems, highly sensitive to climate change and human activities, are characterized by rapid environmental change to fluctuating water levels and siltation, causing stress on their biological components. We have little understanding of mechanisms by which riverine plant species have developed adaptive strategies to cope with stress in dynamic environments while maintaining growth and development.
Results: We report that poplar (Populus spp.) has evolved a systems level "stress proteome" in the leaf-stem-root apoplast continuum to counter biotic and abiotic factors. To obtain apoplast proteins from P. deltoides, we developed pressure-chamber and water-displacement methods for leaves and stems, respectively. Analyses of 303 proteins and corresponding transcripts coupled with controlled experiments and bioinformatics demonstrate that poplar depends on constitutive and inducible factors to deal with water, pathogen, and oxidative stress. However, each apoplast possessed a unique set of proteins, indicating that response to stress is partly compartmentalized. Apoplast proteins that are involved in glycolysis, fermentation, and catabolism of sucrose and starch appear to enable poplar to grow normally under water stress. Pathogenesis-related proteins mediating water and pathogen stress in apoplast were particularly abundant and effective in suppressing growth of the most prevalent poplar pathogen Melampsora. Unexpectedly, we found diverse peroxidases that appear to be involved in stress-induced cell wall modification in apoplast, particularly during the growing season. Poplar developed a robust antioxidative system to buffer oxidation in stem apoplast.
Conclusion: These findings suggest that multistress response in the apoplast constitutes an important adaptive trait for poplar to inhabit dynamic environments and is also a potential mechanism in other riverine plant species.
C1 [Pechanova, Olga; Hsu, Chuan-Yu; Adams, Joshua P.; Vandervelde, Lindsay; Yuceer, Cetin] Mississippi State Univ, Dept Forestry, Mississippi State, MS 39762 USA.
[Pechan, Tibor] Mississippi State Univ, Life Sci & Biotechnol Inst, Mississippi Agr & Forestry Expt Stn, Mississippi State, MS 39762 USA.
[Drnevich, Jenny] Univ Illinois, WM Keck Ctr Comparat & Funct Genom, Urbana, IL 61801 USA.
[Jawdy, Sara; Tschaplinski, Timothy J.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
[Adeli, Ardeshir] USDA ARS, Mississippi State, MS 39762 USA.
[Suttle, Jeffrey C.] USDA ARS, Fargo, ND 58105 USA.
[Lawrence, Amanda M.] Mississippi State Univ, Ctr Electron Microscopy, Mississippi State, MS 39762 USA.
[Seguin, Armand] Nat Resources Canada, Canadian Forest Serv, Laurentian Forestry Ctr, Stn St Foy, Quebec City, PQ G1V 4C7, Canada.
RP Yuceer, C (reprint author), Mississippi State Univ, Dept Forestry, Mississippi State, MS 39762 USA.
EM mcy1@msstate.edu
OI Tschaplinski, Timothy/0000-0002-9540-6622
FU U.S. Department of Energy, Office of Science, Biological and
Environmental Research; U.S. Department of Energy [DE-AC05-00OR22725];
NSF [DBI-0501890, IOS-0845834]
FX We thank Y. Kang, M. Monroe, G. Pelletier, K-H. Han, and J-H. Ko for
assistance, and J. Kreuzwieser, V. Chiang, and S. Strauss for
discussions on the manuscript. MS was conducted at the Life Sciences and
Biotechnology Institute, Mississippi Agricultural and Forestry
Experiment Station, Mississippi State University. S.J. and T.J.T. were
supported by the U.S. Department of Energy, Office of Science,
Biological and Environmental Research. Oak Ridge National Laboratory is
managed by UT-Battelle, LLC, for the U.S. Department of Energy under
contract DE-AC05-00OR22725. This work was funded by NSF (DBI-0501890 and
IOS-0845834) to C. Y.
NR 142
TC 31
Z9 32
U1 5
U2 23
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1471-2164
J9 BMC GENOMICS
JI BMC Genomics
PD NOV 29
PY 2010
VL 11
AR 674
DI 10.1186/1471-2164-11-674
PG 22
WC Biotechnology & Applied Microbiology; Genetics & Heredity
SC Biotechnology & Applied Microbiology; Genetics & Heredity
GA 697YI
UT WOS:000285555300001
PM 21114852
ER
PT J
AU Herklotz, A
Biegalski, MD
Kim, HS
Schultz, L
Dorr, K
Christen, HM
AF Herklotz, Andreas
Biegalski, Michael D.
Kim, Hyun-Sik
Schultz, Ludwig
Doerr, Kathrin
Christen, Hans M.
TI Wide-range strain tunability provided by epitaxial LaAl1-xScxO3 template
films
SO NEW JOURNAL OF PHYSICS
LA English
DT Article
ID THIN-FILMS; FERROELECTRICITY; TEMPERATURE
AB The dielectric diamagnetic LaAl1-xScxO3 (LASO) (x = 0-1) is proposed for adjusting of the biaxial in-plane lattice parameter of oxide substrates in the wide range from 3.79 to 4.05 angstrom (6.5%). This range includes the pseudocubic lattice parameters of most of the currently investigated complex oxides. The in-plane lattice parameter of strain-relaxed LASO films depends linearly on the composition, and these films grow with a smooth surface. On several different LASO-buffered substrates, ferromagnetic La0.7Sr0.3MnO3 (LSMO) films have been grown in predetermined strain states. A series of 30 nm thick LSMO films on LASO-buffered LaSrAlO4(001) demonstrates that continuously controlled coherent strains in a wide range, in this case from -1 to +0.6%, can be obtained for the functional oxide films grown on LASO.
C1 [Herklotz, Andreas; Schultz, Ludwig; Doerr, Kathrin] IFW Dresden, Inst Metall Mat, D-01069 Dresden, Germany.
[Biegalski, Michael D.; Christen, Hans M.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
[Kim, Hyun-Sik] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Herklotz, A (reprint author), IFW Dresden, Inst Metall Mat, Helmholtzstr 20, D-01069 Dresden, Germany.
EM a.herklotz@ifw-dresden.de
RI Schultz, Ludwig/B-3383-2010; Christen, Hans/H-6551-2013
OI Christen, Hans/0000-0001-8187-7469
FU DFG [FOR520]; US Department of Energy; Division of Scientific User
Facilities; Division of Materials Sciences and Engineering
FX We acknowledge support from the DFG FOR520 (AH, LS and KD) and from the
US Department of Energy, Division of Scientific User Facilities (MDB and
HMC) and Division of Materials Sciences and Engineering (HSK).
NR 16
TC 3
Z9 3
U1 0
U2 14
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1367-2630
J9 NEW J PHYS
JI New J. Phys.
PD NOV 29
PY 2010
VL 12
AR 113053
DI 10.1088/1367-2630/12/11/113053
PG 6
WC Physics, Multidisciplinary
SC Physics
GA 687KC
UT WOS:000284776400003
ER
PT J
AU Li, SZ
Ding, XD
Deng, JK
Lookman, T
Li, J
Ren, XB
Sun, J
Saxena, A
AF Li, Suzhi
Ding, Xiangdong
Deng, Junkai
Lookman, Turab
Li, Ju
Ren, Xiaobing
Sun, Jun
Saxena, Avadh
TI Superelasticity in bcc nanowires by a reversible twinning mechanism
SO PHYSICAL REVIEW B
LA English
DT Article
ID SHAPE-MEMORY ALLOYS; STACKING-FAULT ENERGIES; SURFACE FREE-ENERGY;
CRACK-TIP; FUNCTIONAL MATERIALS; MOLECULAR-DYNAMICS; CU NANOWIRES; FCC
METALS; ALPHA-IRON; DEFORMATION
AB Superelasticity (SE) in bulk materials is known to originate from the structure-changing martensitic transition which provides a volumetric thermodynamic driving force for shape recovery. On the other hand, structure-invariant deformation processes, such as twinning and dislocation slip, which result in plastic deformation, cannot provide the driving force for shape recovery. We use molecular-dynamics simulations to show that some bcc metal nanowires exhibit SE by a "reversible" twinning mechanism, in contrast to the above conventional point of view. We show that this reversible twinning is driven by the surface energy change between the twinned and detwinned state. In view of similar recent findings in fcc nanowires, we suggest that SE is a general phenomenon in cubic nanowires and that the driving force for the shape recovery arises from minimizing the surface energy. Furthermore, we find that SE in bcc nanowires is unique in several respects: first, the < 111 > / {112} stacking fault generated by partial dislocation is always preferred over < 111 > / {110} and < 111 > / {123} full dislocation slip. The occurrence of < 111 > / {112} twin or full dislocation slip in bcc nanowires depends on the competition between the emission of subsequent partial dislocations in adjacent {112} planes and the emission of partial dislocations in the same plane. Second, compared to their fcc counterparts, bcc nanowires have a higher energy barrier for the nucleation of twins, but a lower energy barrier for twin migration. This results in certain unique characteristics of SE in bcc nanowires, such as low energy dissipation and low strain hardening. Third, certain refractory bcc nanowires, such as W and Mo, can show SE at very high temperatures, which are higher than almost all of the reported high-temperature shape memory alloys. Our work provides a deeper understanding of superelasticity in nanowires and refractory bcc nanowires are potential candidates for applications in nanoelectromechanical systems operating over a wide temperature range.
C1 [Li, Suzhi; Ding, Xiangdong; Deng, Junkai; Li, Ju; Ren, Xiaobing; Sun, Jun] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China.
[Ding, Xiangdong; Lookman, Turab; Saxena, Avadh] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Deng, Junkai; Ren, Xiaobing] Natl Inst Mat Sci, Ferroic Phys Grp, Tsukuba, Ibaraki 3050047, Japan.
[Li, Ju] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA.
RP Ding, XD (reprint author), Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China.
EM dingxd@mail.xjtu.edu.cn; txl@lanl.gov
RI Ren, Xiaobing/B-6072-2009; Deng, Junkai/E-2315-2012; Li, Ju/A-2993-2008;
Ding, Xiangdong/K-4971-2013;
OI Ren, Xiaobing/0000-0002-4973-2486; Li, Ju/0000-0002-7841-8058; Ding,
Xiangdong/0000-0002-1220-3097; Lookman, Turab/0000-0001-8122-5671
FU NSFC [50771079, 50720145101, 50831004]; 973 Program of China
[2010CB631003]; 111 project of China [B06025]; U.S. DOE at LANL
[DE-AC52-06NA25396]; NSF [CMMI-0728069]; MRSEC [DMR-0520020]; ONR
[N00014-05-1-0504]; AFOSR [FA9550-08-1-0325]
FX This work was supported by NSFC (Grants No. 50771079, No. 50720145101,
and No. 50831004) and the 973 Program of China (Grant No. 2010CB631003)
as well as 111 project (B06025) of China. X. D., T. L. and A. S. also
acknowledge support from the U.S. DOE at LANL (Grant No.
DE-AC52-06NA25396). J.L. acknowledges support by NSF under Grant No.
CMMI-0728069, MRSEC under Grant No. DMR-0520020, ONR under Grant No.
N00014-05-1-0504, and AFOSR under Grant No. FA9550-08-1-0325.
NR 44
TC 35
Z9 36
U1 4
U2 58
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 29
PY 2010
VL 82
IS 20
AR 205435
DI 10.1103/PhysRevB.82.205435
PG 12
WC Physics, Condensed Matter
SC Physics
GA 713JX
UT WOS:000286735400006
ER
PT J
AU Dusling, K
Zahed, I
AF Dusling, Kevin
Zahed, Ismail
TI Thermal photons from heavy ion collisions: A spectral function approach
SO PHYSICAL REVIEW C
LA English
DT Article
ID EMISSION RATES; HADRONIC GAS; LEADING-ORDER; DILEPTON
AB We analyze the photon rates from a hadronic gas in equilibrium using chiral-reduction formulas and a density expansion. The chiral reduction is carried to second order in the pion density, which in principal includes all kinetic processes of the type X -> pi gamma and X -> pi pi gamma. The resulting rates are encoded in the form of vacuum correlation functions, which are amenable to experiment. The hadronic rates computed in this work along with the known perturbative quark gluon plasma rates are integrated over the space-time evolution of a hydrodynamic model tuned to hadronic observables. The resulting yields are compared to the recent photon and low-mass dilepton measurements at the Super Proton Synchrotron and Relativistic Heavy Ion Collider. Predictions for the Large Hadron Collider are made.
C1 [Dusling, Kevin] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Zahed, Ismail] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
RP Dusling, K (reprint author), Brookhaven Natl Lab, Dept Phys, Bldg 510A, Upton, NY 11973 USA.
OI Dusling, Kevin/0000-0001-9598-0416
FU US DOE [DE-AC02-98CH10886, DE-FG02-88ER40388, DE-FG03-97ER4014]
FX K. D. would like to thank Stefan Bathe for useful discussions and Dmitri
Peressounko for providing the SPS photon result from the HBT analysis.
K. D. would also like to thank Werner Vogelsang for providing his prompt
photon production calculations. We are also indebted to Axel Drees for
stressing to us the role of the NLO corrections in the analysis of the
PHENIX dielectron data. Finally, we are grateful to Ralph Rapp for his
careful reading of our manuscript and for making many useful
suggestions. K.D. is supported by US DOE Grant No. DE-AC02-98CH10886.
The work of I.Z. was supported in part by US DOE Grants No.
DE-FG02-88ER40388 and No. DE-FG03-97ER4014.
NR 52
TC 17
Z9 17
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD NOV 29
PY 2010
VL 82
IS 5
AR 054909
DI 10.1103/PhysRevC.82.054909
PG 11
WC Physics, Nuclear
SC Physics
GA 713JO
UT WOS:000286734500009
ER
PT J
AU Ferroni, L
Koch, V
Pinto, MB
AF Ferroni, Lorenzo
Koch, Volker
Pinto, Marcus B.
TI Multiple critical points in effective quark models
SO PHYSICAL REVIEW C
LA English
DT Article
ID GROSS-NEVEU MODEL; ANHARMONIC-OSCILLATOR; PERTURBATION-THEORY; CRITICAL
EXPONENTS; CHIRAL-SYMMETRY; OPTIMIZED EXPANSION; FINITE-TEMPERATURE;
PHASE-TRANSITION; DELTA-EXPANSION; DYNAMICAL MODEL
AB We consider the two-flavor version of the linear sigma model as well as of the Nambu-Jona-Lasinio model, at finite temperature and quark chemical potential, beyond the mean field approximation. Using parameter values for the pion and quark current masses which weakly break chiral symmetry, we show that both models can present more than one critical end point. In particular, we explicitly show that the appearance of a new critical point associated with a first-order line at high temperature and low densities could help to conciliate some lattice results with model predictions. Using different techniques, we perform an extensive thermodynamical analysis to understand the physical nature of the different critical points. For both models, our results suggest that the new first-order line which starts at vanishing chemical potential has a more chiral character than the usual line which displays a character more reminiscent of a liquid-gas phase transition.
C1 [Ferroni, Lorenzo] Goethe Univ Frankfurt, Inst Theoret Phys, D-60438 Frankfurt, Germany.
[Ferroni, Lorenzo; Koch, Volker; Pinto, Marcus B.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
[Pinto, Marcus B.] Univ Fed Santa Catarina, Dept Fis, BR-88040900 Florianopolis, SC, Brazil.
RP Ferroni, L (reprint author), Goethe Univ Frankfurt, Inst Theoret Phys, Max von Laue St 1, D-60438 Frankfurt, Germany.
RI Pinto, Marcus /D-9598-2013
FU Office of Energy Research, Office of High Energy and Nuclear Physics,
Divisions of Nuclear Physics, of the US Department of Energy
[DE-AC02-05CH11231]; Helmholtz International Center for FAIR;
Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES,
Brazil)
FX M.B.P. thanks the Nuclear Theory Group at LBNL for the hospitality
during the sabbatical year. We thank J.-L. Kneur, R. Ramos, I. N.
Mishustin, W. Figueiredo, P. Costa, Y. Hatta, H. Hansen, and A. Delfino
for discussions. This work was supported by the Director, Office of
Energy Research, Office of High Energy and Nuclear Physics, Divisions of
Nuclear Physics, of the US Department of Energy under Contract No.
DE-AC02-05CH11231, by the Helmholtz International Center for FAIR within
the framework of the LOEWE program (Landesoffensive zur Entwicklung
Wissenschaftlich-Okonomischer Exzellenz) launched by the State of Hesse,
and by Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior
(CAPES, Brazil).
NR 85
TC 16
Z9 16
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD NOV 29
PY 2010
VL 82
IS 5
AR 055205
DI 10.1103/PhysRevC.82.055205
PG 19
WC Physics, Nuclear
SC Physics
GA 713JO
UT WOS:000286734500010
ER
PT J
AU Lane, GJ
Dracoulis, GD
Kondev, FG
Hughes, RO
Watanabe, H
Byrne, AP
Carpenter, MP
Chiara, CJ
Chowdhury, P
Janssens, RVF
Lauritsen, T
Lister, CJ
McCutchan, EA
Seweryniak, D
Stefanescu, I
Zhu, S
AF Lane, G. J.
Dracoulis, G. D.
Kondev, F. G.
Hughes, R. O.
Watanabe, H.
Byrne, A. P.
Carpenter, M. P.
Chiara, C. J.
Chowdhury, P.
Janssens, R. V. F.
Lauritsen, T.
Lister, C. J.
McCutchan, E. A.
Seweryniak, D.
Stefanescu, I.
Zhu, S.
TI Structure of neutron-rich tungsten nuclei and evidence for a 10(-)
isomer in W-190
SO PHYSICAL REVIEW C
LA English
DT Article
ID MULTI-QUASI-PARTICLE; ATOMIC-NUCLEI; K-SELECTION; STATES; TRANSITIONS;
LANDSCAPE; TA-179; TRAPS; DECAY; BANDS
AB Isomers in the neutron-rich nucleus W-190 have been characterized. A 10(-) state from the 9/2(-)[505] circle times 11/2(+)[615] two-neutron configuration with a 240-mu s lifetime decays via a K-allowed, 97-keV, M2 transition to an 8(+) state with a 160-ns lifetime from the 9/2(-)[505] circle times 7/2(-) [503] neutron configuration. New states have also been identified in W-188, including a K-pi = 8(-), 158-ns isomer from the 9/2(-)[614] circle times 7/2(+)[404] two-proton configuration. The K hindrance is observed to decrease with increasing neutron number, consistent with a trend toward increasing triaxial softness.
C1 [Lane, G. J.; Dracoulis, G. D.; Hughes, R. O.; Watanabe, H.; Byrne, A. P.] Australian Natl Univ, Dept Nucl Phys, Res Sch Phys & Engn, Canberra, ACT 0200, Australia.
[Kondev, F. G.; Chiara, C. J.] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA.
[Carpenter, M. P.; Chiara, C. J.; Janssens, R. V. F.; Lauritsen, T.; Lister, C. J.; McCutchan, E. A.; Seweryniak, D.; Stefanescu, I.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Chiara, C. J.; Stefanescu, I.] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.
[Chowdhury, P.] Univ Massachusetts Lowell, Dept Phys, Lowell, MA 01854 USA.
RP Lane, GJ (reprint author), Australian Natl Univ, Dept Nucl Phys, Res Sch Phys & Engn, GPO Box 4, Canberra, ACT 0200, Australia.
RI Lane, Gregory/A-7570-2011; Carpenter, Michael/E-4287-2015
OI Lane, Gregory/0000-0003-2244-182X; Carpenter,
Michael/0000-0002-3237-5734
FU Australian Government [06/07-H-04]; Australian Research Council
[DP0345844, DP0986725]; US Department of Energy, Office of Nuclear
Physics [DE-AC02-06CH11357, DE-FG02-94ER40848]
FX We are grateful to R. B. Turkentine for making the targets. G.J.L.,
G.D.D., and R.O.H. acknowledge travel support from Australian Government
Access to Major Research Facilites Program Grant No. 06/07-H-04. This
research was supported by Discovery Projects (DP0345844 and DP0986725)
from the Australian Research Council and by the US Department of Energy,
Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357 and
Grant No. DE-FG02-94ER40848.
NR 29
TC 23
Z9 24
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD NOV 29
PY 2010
VL 82
IS 5
AR 051304
DI 10.1103/PhysRevC.82.051304
PG 5
WC Physics, Nuclear
SC Physics
GA 713JO
UT WOS:000286734500002
ER
PT J
AU Gilbert, JA
Field, D
Swift, P
Thomas, S
Cummings, D
Temperton, B
Weynberg, K
Huse, S
Hughes, M
Joint, I
Somerfield, PJ
Muhling, M
AF Gilbert, Jack A.
Field, Dawn
Swift, Paul
Thomas, Simon
Cummings, Denise
Temperton, Ben
Weynberg, Karen
Huse, Susan
Hughes, Margaret
Joint, Ian
Somerfield, Paul J.
Muehling, Martin
TI The Taxonomic and Functional Diversity of Microbes at a Temperate
Coastal Site: A 'Multi-Omic' Study of Seasonal and Diel Temporal
Variation
SO PLOS ONE
LA English
DT Article
ID WESTERN ENGLISH-CHANNEL; COMMUNITY STRUCTURE; RARE BIOSPHERE; OCEAN;
GENOMICS; BACTERIAL; DYNAMICS; WATERS; SEA; METAGENOMICS
AB How microbial communities change over time in response to the environment is poorly understood. Previously a six-year time series of 16S rRNA V6 data from the Western English Channel demonstrated robust seasonal structure within the bacterial community, with diversity negatively correlated with day-length. Here we determine whether metagenomes and metatranscriptomes follow similar patterns. We generated 16S rRNA datasets, metagenomes (1.2 GB) and metatranscriptomes (157 MB) for eight additional time points sampled in 2008, representing three seasons (Winter, Spring, Summer) and including day and night samples. This is the first microbial 'multi-omic' study to combine 16S rRNA amplicon sequencing with metagenomic and metatranscriptomic profiling. Five main conclusions can be drawn from analysis of these data: 1) Archaea follow the same seasonal patterns as Bacteria, but show lower relative diversity; 2) Higher 16S rRNA diversity also reflects a higher diversity of transcripts; 3) Diversity is highest in winter and at night; 4) Community-level changes in 16S-based diversity and metagenomic profiles are better explained by seasonal patterns (with samples closest in time being most similar), while metatranscriptomic profiles are better explained by diel patterns and shifts in particular categories (i.e., functional groups) of genes; 5) Changes in key genes occur among seasons and between day and night (i.e., photosynthesis); but these samples contain large numbers of orphan genes without known homologues and it is these unknown gene sets that appear to contribute most towards defining the differences observed between times. Despite the huge diversity of these microbial communities, there are clear signs of predictable patterns and detectable stability over time. Renewed and intensified efforts are required to reveal fundamental deterministic patterns in the most complex microbial communities. Further, the presence of a substantial proportion of orphan sequences underscores the need to determine the gene products of sequences with currently unknown function.
C1 [Gilbert, Jack A.; Swift, Paul; Thomas, Simon; Cummings, Denise; Temperton, Ben; Weynberg, Karen; Joint, Ian; Somerfield, Paul J.] Plymouth Marine Lab, Plymouth, Devon, England.
[Gilbert, Jack A.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Gilbert, Jack A.] Univ Chicago, Dept Ecol & Evolut, Chicago, IL 60637 USA.
[Field, Dawn; Swift, Paul] Natl Environm Res Council NERC Ctr Ecol & Hydrol, Wallingford, Oxon, England.
[Huse, Susan] Marine Biol Lab, Josephine Bay Paul Ctr Comparat Mol Biol & Evolut, Woods Hole, MA 02543 USA.
[Hughes, Margaret] Univ Liverpool, Sch Biol Sci, Liverpool L69 3BX, Merseyside, England.
[Muehling, Martin] TU Bergakad Freiberg, IOZ Interdisciplinary Ctr Ecol, Freiberg, Germany.
RP Gilbert, JA (reprint author), Plymouth Marine Lab, Plymouth, Devon, England.
EM gilbertjack@gmail.com
RI Field, Dawn/C-1653-2010; Somerfield, Paul/J-9189-2014;
OI Somerfield, Paul/0000-0002-7581-5621; Weynberg,
Karen/0000-0002-9856-2137
FU Natural Environmental Research Council [NE/F00138X/1]
FX Funding for this work was provided by a Natural Environmental Research
Council (www.nerc.ac.uk) grant, NE/F00138X/1. The funders had no role in
study design, data collection and analysis, decision to publish, or
preparation of the manuscript.
NR 49
TC 98
Z9 101
U1 3
U2 64
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD NOV 29
PY 2010
VL 5
IS 11
AR e15545
DI 10.1371/journal.pone.0015545
PG 17
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 686HD
UT WOS:000284686500047
PM 21124740
ER
PT J
AU Liu, P
AF Liu, Ping
TI Water-gas shift reaction on oxide/Cu(111): Rational catalyst screening
from density functional theory
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID MIXED-METAL OXIDE; METHANOL SYNTHESIS; RUTILE TIO2(110); NANOMETER
LEVEL; CO OXIDATION; NANOPARTICLES; SURFACES; AU; CU; MECHANISM
AB Developing improved catalysts based on a fundamental understanding of reaction mechanism has become one of the grand challenges in catalysis. A theoretical understanding and screening the metal-oxide composite catalysts for the water-gas shift (WGS) reaction is presented here. Density functional theory was employed to identify the key step for the WGS reaction on the Au, Cu-oxide catalysts, where the calculated reaction energy for water dissociation correlates well with the experimental measured WGS activity. Accordingly, the calculated reaction energy for water dissociation was used as the scaling descriptor to screen the inverse model catalysts, oxide/Cu(111), for the better WGS activity. Our calculations predict that the WGS activity increases in a sequence: Cu(111), ZnO/Cu(111) < TiO2/Cu(111), ZrO2/Cu(111) < MoO3/Cu(111). Our results imply that the high performances of Au, Cu-oxide nanocatalysts in the WGS reaction rely heavily on the direct participation of both oxide and metal sites. The degree that the oxide is reduced by Cu plays an important role in determining the WGS activity of oxide/Cu catalysts. The reducible oxide can be transformed from the fully oxidized form to the reduced form due to the interaction with Cu and, therefore, the transfer of electron density from Cu, which helps in releasing the bottleneck water dissociation and, therefore, facilitating the WGS reaction on copper. (C) 2010 American Institute of Physics. [doi:10.1063/1.3506897]
C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
RP Liu, P (reprint author), Brookhaven Natl Lab, Dept Chem, Bldg 555, Upton, NY 11973 USA.
EM pingliu3@bnl.gov
FU U.S. Department of Energy, Division of Chemical Sciences
[DE-AC02-98CH10886]
FX This research was carried out at Brookhaven National Laboratory under
Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy,
Division of Chemical Sciences. The calculations were carried out using
computational resources at the Center for Functional Nanomaterials at
Brookhaven National Laboratory.
NR 44
TC 13
Z9 13
U1 5
U2 54
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
EI 1089-7690
J9 J CHEM PHYS
JI J. Chem. Phys.
PD NOV 28
PY 2010
VL 133
IS 20
AR 204705
DI 10.1063/1.3506897
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 690LB
UT WOS:000285005200017
PM 21133450
ER
PT J
AU Muller, A
Schippers, S
Phaneuf, RA
Kilcoyne, ALD
Brauning, H
Schlachter, AS
Lu, M
McLaughlin, BM
AF Mueller, A.
Schippers, S.
Phaneuf, R. A.
Kilcoyne, A. L. D.
Braeuning, H.
Schlachter, A. S.
Lu, M.
McLaughlin, B. M.
TI State-resolved valence shell photoionization of Be-like ions: experiment
and theory
SO JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
LA English
DT Article
ID CROSS-SECTIONS; OSCILLATOR-STRENGTHS; HIGH-RESOLUTION; GROUND-STATE;
ATOMIC IONS; C2+ IONS; BERYLLIUM; RECOMBINATION; OXYGEN; C3+
AB High-resolution photoionization experiments were carried out using beams of Be-like C(2+), N(3+) and O(4+) ions with roughly equal populations of the (1)S ground state and the (3)P(o) manifold of metastable components. The energy scales of the experiments are calibrated with uncertainties of 1-10 meV depending on photon energy. Resolving powers beyond 20 000 were reached allowing for the separation of contributions from the individual metastable (3)P(0)(o), (3)P(1)(o) and (3)P(2)(o) states. The measured data compare favourably with semi-relativistic Breit-Pauli R-matrix calculations.
C1 [Mueller, A.; Schippers, S.; Braeuning, H.] Univ Giessen, Inst Atom & Mol Phys, D-35392 Giessen, Germany.
[Phaneuf, R. A.; Lu, M.] Univ Nevada, Dept Phys, Reno, NV 89557 USA.
[Kilcoyne, A. L. D.; Schlachter, A. S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[McLaughlin, B. M.] Queens Univ Belfast, Sch Math & Phys, Ctr Theoret Atom Mol & Opt Phys CTAMOP, Belfast BT7 1NN, Antrim, North Ireland.
[McLaughlin, B. M.] Harvard Smithsonian Ctr Astrophys, Inst Theoret Atom & Mol Phys, Cambridge, MA 02138 USA.
RP Muller, A (reprint author), Univ Giessen, Inst Atom & Mol Phys, D-35392 Giessen, Germany.
EM Alfred.Mueller@iamp.physik.uni-giessen.de
RI Muller, Alfred/A-3548-2009; Kilcoyne, David/I-1465-2013; Schippers,
Stefan/A-7786-2008
OI Muller, Alfred/0000-0002-0030-6929; Schippers,
Stefan/0000-0002-6166-7138
FU Deutsche Forschungsgemeinschaft [Mu 1068/10]; NATO [976362]; US
Department of Energy (DOE) [DE-AC03-76SF-00098, DE-FG02-03ER15424]; US
National Science Foundation
FX We acknowledge support by Deutsche Forschungsgemeinschaft under project
number Mu 1068/10 and through NATO Collaborative Linkage grant 976362 as
well as by the US Department of Energy (DOE) under contract
DE-AC03-76SF-00098 and grant DE-FG02-03ER15424. B M McLaughlin
acknowledges support by the US National Science Foundation through a
grant to ITAMP at the Harvard-Smithsonian Center for Astrophysics. The
computational work was carried out at the National Energy Research
Scientific Computing Center in Oakland, CA, USA, and on the Tera-grid at
the National Institute for Computational Science (NICS) in TN, USA,
which is supported in part by the US National Science Foundation.
NR 46
TC 10
Z9 10
U1 0
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-4075
J9 J PHYS B-AT MOL OPT
JI J. Phys. B-At. Mol. Opt. Phys.
PD NOV 28
PY 2010
VL 43
IS 22
AR 225201
DI 10.1088/0953-4075/43/22/225201
PG 17
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 679GI
UT WOS:000284149400004
ER
PT J
AU Jilka, P
Millington, C
Elsegood, MRJ
Frese, JWA
Teat, S
Kimber, MC
AF Jilka, Priti
Millington, Claire
Elsegood, Mark R. J.
Frese, Josef W. A.
Teat, Simon
Kimber, Marc C.
TI The selective mono and difunctionalization of carbocyclic cleft
molecules with pyridyl groups and X-ray crystallographic analysis
SO TETRAHEDRON
LA English
DT Article
DE Carbocyclic cleft; Chiral cavity; Alkylation; Esterification;
Recognition
ID TROGERS BASE; ENANTIOMER RECOGNITION; CHIRAL CENTER; CROWN-ETHERS;
SUBUNIT; COMPLEMENTARY; DERIVATIVES; FRAMEWORK; CHEMISTRY
AB The diesterification and selective mono and dialkylation of carbocyclic analogues of Trager's base with pyridyl groups has been achieved in high yield and good selectivity giving access to a novel range of cleft molecules capable of binding events. Reaction conditions for the selective functionalization of this carbocyclic cleft molecule are discussed as well as the solid state structures of these newly synthesized ligands. (C) 2010 Elsevier Ltd. All rights reserved.
C1 [Jilka, Priti; Millington, Claire; Elsegood, Mark R. J.; Frese, Josef W. A.; Kimber, Marc C.] Univ Loughborough, Dept Chem, Loughborough LE11 3TU, Leics, England.
[Teat, Simon] Berkeley Lab, ALS, Berkeley, CA 94720 USA.
RP Kimber, MC (reprint author), Univ Loughborough, Dept Chem, Loughborough LE11 3TU, Leics, England.
EM M.C.Kimber@lboro.ac.uk
RI Elsegood, Mark/K-1663-2013; Kimber, Marc/B-1472-2010
OI Elsegood, Mark/0000-0002-8984-4175; Kimber, Marc/0000-0003-2943-1974
FU Loughborough University; Office of Science, Office of Basic Energy
Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]
FX MCK thanks Loughborough University for funding. The Advanced Light
Source is supported by the Director, Office of Science, Office of Basic
Energy Sciences, of the U.S. Department of Energy under Contract No.
DE-AC02-05CH11231.
NR 24
TC 3
Z9 3
U1 1
U2 5
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0040-4020
J9 TETRAHEDRON
JI Tetrahedron
PD NOV 27
PY 2010
VL 66
IS 48
BP 9327
EP 9331
DI 10.1016/j.tet.2010.10.027
PG 5
WC Chemistry, Organic
SC Chemistry
GA 686WK
UT WOS:000284728000002
ER
PT J
AU Kajstura, J
Gurusamy, N
Ogorek, B
Goichberg, P
Clavo-Rondon, C
Hosoda, T
D'Amario, D
Bardelli, S
Beltrami, AP
Cesselli, D
Bussani, R
del Monte, F
Quaini, F
Rota, M
Beltrami, CA
Buchholz, BA
Leri, A
Anversa, P
AF Kajstura, Jan
Gurusamy, Narasimman
Ogorek, Barbara
Goichberg, Polina
Clavo-Rondon, Carlos
Hosoda, Toru
D'Amario, Domenico
Bardelli, Silvana
Beltrami, Antonio P.
Cesselli, Daniela
Bussani, Rossana
del Monte, Federica
Quaini, Federico
Rota, Marcello
Beltrami, Carlo A.
Buchholz, Bruce A.
Leri, Annarosa
Anversa, Piero
TI Myocyte Turnover in the Aging Human Heart
SO CIRCULATION RESEARCH
LA English
DT Article
DE gender; aging myopathy; humans; myocyte renewal
ID CARDIAC STEM-CELLS; MYOCARDIAL REGENERATION; TELOMERE LENGTH; FAILURE;
ACTIVATION; MODELS; CANCER; MOUSE; DEATH; CARDIOMYOGENESIS
AB Rationale: The turnover of cardiomyocytes in the aging female and male heart is currently unknown, emphasizing the need to define human myocardial biology.
Objective: The effects of age and gender on the magnitude of myocyte regeneration and the origin of newly formed cardiomyocytes were determined.
Methods and Results: The interaction of myocyte replacement, cellular senescence, growth inhibition, and apoptosis was measured in normal female (n=32) and male (n=42) human hearts collected from patients 19 to 104 years of age who died from causes other than cardiovascular diseases. A progressive loss of telomeric DNA in human cardiac stem cells (hCSCs) occurs with aging and the newly formed cardiomyocytes inherit short telomeres and rapidly reach the senescent phenotype. Our data provide novel information on the superior ability of the female heart to sustain the multiple variables associated with the development of the senescent myopathy. At all ages, the female heart is equipped with a larger pool of functionally competent hCSCs and younger myocytes than the male myocardium. The replicative potential is higher and telomeres are longer in female hCSCs than in male hCSCs. In the female heart, myocyte turnover occurs at a rate of 10%, 14%, and 40% per year at 20, 60, and 100 years of age, respectively. Corresponding values in the male heart are 7%, 12%, and 32% per year, documenting that cardiomyogenesis involves a large and progressively increasing number of parenchymal cells with aging. From 20 to 100 years of age, the myocyte compartment is replaced 15 times in women and 11 times in men.
Conclusions: The human heart is a highly dynamic organ regulated by a pool of resident hCSCs that modulate cardiac homeostasis and condition organ aging. (Circ Res. 2010;107:1374-1386.)
C1 [Kajstura, Jan; Gurusamy, Narasimman; Ogorek, Barbara; Goichberg, Polina; Clavo-Rondon, Carlos; Hosoda, Toru; D'Amario, Domenico; Bardelli, Silvana; Quaini, Federico; Rota, Marcello; Leri, Annarosa; Anversa, Piero] Harvard Univ, Brigham & Womens Hosp, Sch Med, Dept Anesthesia, Boston, MA 02115 USA.
[Kajstura, Jan; Gurusamy, Narasimman; Ogorek, Barbara; Goichberg, Polina; Clavo-Rondon, Carlos; Hosoda, Toru; D'Amario, Domenico; Bardelli, Silvana; Quaini, Federico; Rota, Marcello; Leri, Annarosa; Anversa, Piero] Harvard Univ, Brigham & Womens Hosp, Sch Med, Dept Med, Boston, MA 02115 USA.
[Kajstura, Jan; Gurusamy, Narasimman; Ogorek, Barbara; Goichberg, Polina; Clavo-Rondon, Carlos; Hosoda, Toru; D'Amario, Domenico; Bardelli, Silvana; Quaini, Federico; Rota, Marcello; Leri, Annarosa; Anversa, Piero] Harvard Univ, Brigham & Womens Hosp, Sch Med, Div Cardiovasc, Boston, MA 02115 USA.
[Beltrami, Antonio P.; Cesselli, Daniela; Beltrami, Carlo A.] Udine Med Sch, Ctr Regenerat Med CIME, Udine, Italy.
[Bussani, Rossana] Univ Trieste, Sch Med, Dept Pathol, I-34127 Trieste, Italy.
[del Monte, Federica] Harvard Univ, Beth Israel Deaconess Med Ctr, Sch Med, Cardiovasc Inst, Boston, MA 02115 USA.
[Buchholz, Bruce A.] Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94550 USA.
RP Kajstura, J (reprint author), Harvard Univ, Brigham & Womens Hosp, Sch Med, Dept Anesthesia, Boston, MA 02115 USA.
EM jkajstura@partners.org; panversa@partners.org
RI beltrami, carlo/A-8026-2008; Hosoda, Toru/G-1873-2010; CESSELLI,
DANIELA/C-7052-2008; Beltrami, Antonio Paolo/C-5291-2008
OI Hosoda, Toru/0000-0002-7273-0630; Beltrami, Antonio
Paolo/0000-0002-0679-2710
FU NIH [NCRR13641]; U.S. Department of Energy by Lawrence Livermore
National Laboratory [DE-AC52-07NA27344]; Cardiocentro Ticino, Lugano,
Switzerland
FX This work was supported by NIH grants and the NIH AMS Resource grant
NCRR13641. Performed, in part, under the auspices of the U.S. Department
of Energy by Lawrence Livermore National Laboratory under contract
DE-AC52-07NA27344. S. B. was supported by a grant from Cardiocentro
Ticino, Lugano, Switzerland.
NR 50
TC 150
Z9 159
U1 2
U2 17
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0009-7330
J9 CIRC RES
JI Circ.Res.
PD NOV 26
PY 2010
VL 107
IS 11
BP 1374
EP 1386
DI 10.1161/CIRCRESAHA.110.231498
PG 13
WC Cardiac & Cardiovascular Systems; Hematology; Peripheral Vascular
Disease
SC Cardiovascular System & Cardiology; Hematology
GA 684WN
UT WOS:000284586100011
PM 21088285
ER
PT J
AU Busche, BJ
Tonelli, AE
Balik, CM
AF Busche, Brad J.
Tonelli, Alan E.
Balik, C. Maurice
TI Properties of polystyrene/poly(dimethyl siloxane) blends partially
compatibilized with star polymers containing a gamma-cyclodextrin core
and polystyrene arms
SO POLYMER
LA English
DT Article
DE Blends; Compatibilization; gamma-CD-star polymer
ID FILMS
AB A star polymer with a gamma-CD core and PS arms (CD-star) is used to partially compatibilize blends of the immiscible polymers polystyrene (PS) and poly(dimethylsiloxane) (PDMS). The mechanism of compatibilization is threading of the CD core by PDMS and subsequent solubilization in the PS matrix facilitated by the star arms. Films cast from clear solutions in chloroform exhibit large wispy PDMS domains, indicating that some dethreading of CD-star and agglomeration of PDMS takes place during the slow process of solvent evaporation. However, DSC and DMA data show that partial compatibilization takes place, as evidenced by a shift in the PS and PDMS T(g)s toward each other. The shift in PS T-g is greater when CD-star is present compared to samples without CD-star. PDMS also tends to leach out of the solution-cast films during solvent evaporation and post-processing of the films. The amount of retained PDMS is significantly increased when CD-star is present. The DMA data also show that PDMS has a lower molecular mobility when CD-star is present. (C) 2010 Elsevier Ltd. All rights reserved.
C1 [Balik, C. Maurice] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA.
[Busche, Brad J.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Tonelli, Alan E.] N Carolina State Univ, Fiber & Polymer Sci Program, Raleigh, NC 27695 USA.
RP Balik, CM (reprint author), N Carolina State Univ, Dept Mat Sci & Engn, Campus Box 7907, Raleigh, NC 27695 USA.
EM balik@ncsu.edu
RI Balik, C. Maurice/A-5886-2010
FU N. C. State University; National Textile Center [M06-NS02]
FX The authors gratefully acknowledge financial support from N. C. State
University and the National Textile Center, Grant #M06-NS02.
NR 15
TC 5
Z9 5
U1 0
U2 27
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0032-3861
J9 POLYMER
JI Polymer
PD NOV 26
PY 2010
VL 51
IS 25
BP 6013
EP 6020
DI 10.1016/j.polymer.2010.10.024
PG 8
WC Polymer Science
SC Polymer Science
GA 687QR
UT WOS:000284793500017
ER
PT J
AU Liu, CC
Arkin, AP
AF Liu, Chang C.
Arkin, Adam P.
TI The Case for RNA
SO SCIENCE
LA English
DT Editorial Material
ID SYNTHETIC BIOLOGY; PARTS; RIBOSWITCHES; DEVICES
C1 [Liu, Chang C.; Arkin, Adam P.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
[Liu, Chang C.] Miller Inst Basic Res Sci, Berkeley, CA 94720 USA.
[Arkin, Adam P.] Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
[Arkin, Adam P.] Univ Calif Berkeley, QB3 Calif Inst Quantitat Biol Res, Berkeley, CA 94720 USA.
RP Liu, CC (reprint author), Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
EM ccliu@berkeley.edu; aparkin@lbl.gov
RI Arkin, Adam/A-6751-2008
OI Arkin, Adam/0000-0002-4999-2931
NR 15
TC 8
Z9 8
U1 0
U2 5
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 0036-8075
J9 SCIENCE
JI Science
PD NOV 26
PY 2010
VL 330
IS 6008
BP 1185
EP 1186
DI 10.1126/science.1199495
PG 2
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 685FE
UT WOS:000284613700024
PM 21109657
ER
PT J
AU Barabash, RI
Huang, EW
Wall, JJ
Wilkerson, JH
Ren, Y
Liu, WJ
Vogel, SC
Ice, GE
Pike, LM
Liaw, PK
AF Barabash, Rozaliya I.
Huang, E-Wen
Wall, James J.
Wilkerson, James H.
Ren, Yang
Liu, Wenjun
Vogel, Sven C.
Ice, Gene E.
Pike, Lee M.
Liaw, Peter K.
TI Texture crossover: Trace from multiple grains to a subgrain
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE Neutron scattering; Synchrotron X-ray diffraction; Nickel-based
superalloys; Crystal plasticity; Texture
ID INDIVIDUAL BULK GRAINS; LATTICE ROTATIONS; DEFORMED METALS; DEFORMATION;
STRAIN; RECRYSTALLIZATION; BOUNDARY; NI; DIFFRACTOMETER; DISLOCATIONS
AB Neutron and synchrotron X-ray diffractions were used to study the texture development in the face-centered-cubic nickel-based superalloy over gauge volumes ranging from hundreds of cubic millimeters down to sub-cubic micrometers. The bulk averaged results find a uniform texture development from collective slip. However, X-ray microbeam studies at microscale find that the plastic deformation within a single grain is mediated by limited slip, as evidenced by the local strain distribution. Polychromatic microdiffraction shows the formation of several distinct structural zones even in the same grain. A hierarchical heterogeneous geometrically-necessary dislocations arrangement and distinct slip bands are observed within each grain. A depth-dependent change of the stereographic projection within the slip band in the grain is demonstrated. Correlated oscillations of the lattice orientation at the submicron scale evolve into an overall texture at the macroscale. Possible reasons for this observed structural evolution are discussed. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Barabash, Rozaliya I.; Ice, Gene E.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN USA.
[Barabash, Rozaliya I.; Liaw, Peter K.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
[Huang, E-Wen] Natl Cent Univ, Dept Chem & Mat Engn, Jhongli, Taiwan.
[Wall, James J.; Wilkerson, James H.; Vogel, Sven C.] Los Alamos Natl Lab, Los Alamos Neutron Sci Ctr, Los Alamos, NM 87545 USA.
[Ren, Yang; Liu, Wenjun] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Pike, Lee M.] Haynes Int Inc, Kokomo, IN 46901 USA.
RP Barabash, RI (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN USA.
EM barabashr@ornl.gov
RI Lujan Center, LANL/G-4896-2012; Huang, E-Wen/A-5717-2015;
OI Huang, E-Wen/0000-0003-4986-0661; Vogel, Sven C./0000-0003-2049-0361
FU National Science Foundation (NSF) [DMR-0231320, DMR-0421219,
DMR-0909037, CMMI-0900271]; National Science Council (NSC)
[NSC99-2218-E-008-009]; Division of Materials Science and Engineering,
Office of Basic Energy Science, U.S. Department of Energy; U.S.
Department of Energy, Office of Science, and Office of Basic Energy
Science [DE-AC02-06CH11357]; Department of Energy's Office of Basic
Energy Science; DOE [DE-AC52-06NA25396]
FX This research is supported in part by the National Science Foundation
(NSF), Programs (DMR-0231320, DMR-0421219, DMR-0909037, and
CMMI-0900271) with Drs. C. V. Cooper, A. Ardell, D. Finotello, C. Huber,
and C. Bouldin as program directors. EW appreciates the support from the
National Science Council (NSC) Program (NSC99-2218-E-008-009). RIB and
GEI are sponsored by the Division of Materials Science and Engineering,
Office of Basic Energy Science, U.S. Department of Energy. The use of
the Advanced Photon Source is supported by the U.S. Department of
Energy, Office of Science, and Office of Basic Energy Science under
Contract No. DE-AC02-06CH11357. The Lujan Neutron Scattering Center at
the Los Alamos Neutron Science Center is funded by the Department of
Energy's Office of Basic Energy Science. The Los Alamos National
Laboratory is operated by the Los Alamos National Security LLC under the
DOE Contract of DE-AC52-06NA25396.
NR 45
TC 5
Z9 5
U1 1
U2 18
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD NOV 25
PY 2010
VL 528
IS 1
BP 3
EP 10
DI 10.1016/j.msea.2010.07.035
PG 8
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 687OQ
UT WOS:000284788200002
ER
PT J
AU Stott, AC
Brauer, JI
Garg, A
Pepper, SV
Abel, PB
DellaCorte, C
Noebe, RD
Glennon, G
Bylaska, E
Dixon, DA
AF Stott, Amanda C.
Brauer, Jonathan I.
Garg, Anita
Pepper, Stephen V.
Abel, Philip B.
DellaCorte, Christopher
Noebe, Ronald D.
Glennon, Glenn
Bylaska, Eric
Dixon, David A.
TI Bonding and Microstructural Stability in Ni55Ti45 Studied by
Experimental and Theoretical Methods
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID SHAPE-MEMORY ALLOYS; GENERALIZED GRADIENT APPROXIMATION; INITIO
MOLECULAR-DYNAMICS; TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD;
MECHANICAL-PROPERTIES; PHASE-STABILITY; IN-SITU; TRANSFORMATION
BEHAVIOR; ELECTRONIC-PROPERTIES
AB Spiral orbit tribometry friction tests performed on Ni-rich Ni55Ti45 titanium ball bearings indicate that this alloy is a promising candidate for future aerospace bearing applications. Microstructural characterization of the bearing specimens was performed using transmission electron microscopy and energy dispersive spectroscopy, with NiTi, Ni4Ti3, Ni3Ti, and Ni2Ti4Ox phases identified within the microstructure of the alloy. Density functional theory was applied to predict the electronic structure of the NixTiy phases, including the band structure and site projected density of states. Ultraviolet photoemission spectroscopy was used to verify the density of states results from the density functional theory calculations, with good agreement observed between experiment and theory.
C1 [Stott, Amanda C.; Brauer, Jonathan I.; Dixon, David A.] Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA.
[Stott, Amanda C.; Pepper, Stephen V.; Abel, Philip B.; DellaCorte, Christopher] NASA, Glenn Res Ctr, Tribol & Mech Components Branch, Cleveland, OH 44135 USA.
[Garg, Anita; Noebe, Ronald D.] NASA, Glenn Res Ctr, Adv Metall Branch, Cleveland, OH 44135 USA.
[Glennon, Glenn] Abbott Ball Co, Hartford, CT 06133 USA.
[Bylaska, Eric] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Dixon, DA (reprint author), Univ Alabama, Dept Chem, Shelby Hall,Box 870336, Tuscaloosa, AL 35487 USA.
EM dadixon@bama.ua.edu
FU NASA [NNX08AY65H]; U.S. Department of Energy, Office of Basic Energy
Sciences; National Science Foundation; University of Alabama
FX A. Stott thanks NASA Training Grant NNX08AY65H for funding this work. D.
A. Dixon thanks the U.S. Department of Energy, Office of Basic Energy
Sciences, the National Science Foundation, and the Robert Ramsay Fund of
The University of Alabama for partial support of this work.
NR 76
TC 6
Z9 6
U1 2
U2 7
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD NOV 25
PY 2010
VL 114
IS 46
BP 19704
EP 19713
DI 10.1021/jp103552s
PG 10
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 681CU
UT WOS:000284287900022
ER
PT J
AU Kim, CY
Elam, JW
Stair, PC
Bedzyk, MJ
AF Kim, Chang-Yong
Elam, Jeffrey W.
Stair, Peter C.
Bedzyk, Michael J.
TI Redox Driven Crystalline Coherent-Incoherent Transformation for a 2 ML
VOx Film Grown on alpha-TiO2(110)
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID RAY STANDING WAVES; SURFACE-STRUCTURE DETERMINATION; SUPPORTED
VANADIUM-OXIDES; ATOMIC LAYER DEPOSITION; SINGLE-CRYSTAL; THIN-FILMS;
TIO2(110); OXIDATION; SPECTROSCOPY; CATALYSTS
AB A redox induced structural transformation for 2 monolayers of vanadia on alpha-TiO2(110) (rutile) was studied by in situ X-ray standing waves and ex situ X-ray photoelectron spectroscopy. The VOX film was grown by atomic layer deposition. Oxidation and reduction were carried out by annealing in O-2 and H-2, respectively. We found that an epitaxial rutile VO2 film was formed in the reduced phase with V4+ cations in lateral alignment with Ti lattice positions. Oxidation was found to produce V5+ cations uncorrelated to the substrate lattice in the oxidized phase. The redox induced structural and oxidation state transformation proved reversible and involved the entire film; not just the surface layer. The current study suggests that the structural order needs to be considered in order to study the activity of supported vanadium oxide catalysts.
C1 [Kim, Chang-Yong] Canadian Light Source, Saskatoon, SK S7N 0X4, Canada.
[Elam, Jeffrey W.] Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA.
[Stair, Peter C.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
[Bedzyk, Michael J.] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
[Bedzyk, Michael J.] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA.
RP Kim, CY (reprint author), Canadian Light Source, 101 Perimeter Rd, Saskatoon, SK S7N 0X4, Canada.
RI Bedzyk, Michael/B-7503-2009; Bedzyk, Michael/K-6903-2013; Kim,
Chang-Yong/I-3136-2014
OI Kim, Chang-Yong/0000-0002-1280-9718
FU Chemical Sciences, Geosciences and Biosciences Division, Office of Basic
Energy Sciences, Office of Science, U.S. Department of Energy
[W-31-109-ENG-38, DE-FG02-03ER15457]; U.S. Department of Energy, Office
of Science, Office of Basic Energy Sciences [DE AC02-06CH11357]; MRSEC
through NSF [DMR-0520513]
FX This work was supported by the Chemical Sciences, Geosciences and
Biosciences Division, Office of Basic Energy Sciences, Office of
Science, U.S. Department of Energy under Contract W-31-109-ENG-38 and
Grant DE-FG02-03ER15457. Use of the Advanced Photon Source was supported
by the U.S. Department of Energy, Office of Science, Office of Basic
Energy Sciences, under Contract No. DE AC02-06CH11357. This work made
use of NU Central Facilities supported by the MRSEC through NSF Contract
No. DMR-0520513.
NR 50
TC 9
Z9 9
U1 0
U2 16
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD NOV 25
PY 2010
VL 114
IS 46
BP 19723
EP 19726
DI 10.1021/jp104978a
PG 4
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 681CU
UT WOS:000284287900024
ER
PT J
AU Shane, DT
Corey, RL
Rayhel, LH
Wellons, M
Teprovich, JA
Zidan, R
Hwang, SJ
Bowman, RC
Conradi, MS
AF Shane, David T.
Corey, Robert L.
Rayhel, Laura H.
Wellons, Matthew
Teprovich, Joseph A., Jr.
Zidan, Ragaiy
Hwang, Son-Jong
Bowman, Robert C., Jr.
Conradi, Mark S.
TI NMR Study of LiBH4 with C-60
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID HYDROGEN STORAGE; DIFFRACTION; REACTIVITY
AB LiBH4 doped with 1.6 mol % well-dispersed C-60 is studied with solid-state nuclear magnetic resonance (NMR). Variable-temperature hydrogen NMR shows large changes between the data upon first heating and after exposure to 300 degrees C. After heating, a large fraction on the order of 50% of the hydrogen signal appears in a motionally narrowed peak, similar to a previous report of LiBH4 in a porous carbon aerogel nanoscaffold. Magic-angle spinning (MAS) NMR of C-13 in a C-13-enriched sample finds the C-60 has reacted already in the as-mixed (unheated) material. Dehydriding and rehydriding result in further C-13 spectral changes, with nearly all intensity being found in a broad peak corresponding to aromatic carbons. It thus appears that the previously reported improved dehydriding and rehydriding kinetics of this material at least partially result from in situ formation of a carbon framework. The method may offer a new route to dispersal of hydrides in carbon support structures.
C1 [Shane, David T.; Rayhel, Laura H.; Conradi, Mark S.] Washington Univ, Dept Phys, St Louis, MO 63130 USA.
[Corey, Robert L.] S Dakota Sch Mines & Technol, Dept Phys, Rapid City, SD 57701 USA.
[Wellons, Matthew; Teprovich, Joseph A., Jr.; Zidan, Ragaiy] Savannah River Natl Lab, Energy Secur Directorate, Aiken, SC 29808 USA.
[Hwang, Son-Jong] CALTECH, Div Chem & Chem Engn, Pasadena, CA 91125 USA.
[Bowman, Robert C., Jr.] RCB Hydrides LLC, Franklin, OH 45005 USA.
RP Shane, DT (reprint author), Washington Univ, Dept Phys, CB 1105,1 Brookings Dr, St Louis, MO 63130 USA.
EM davidshane@go.wustl.edu
OI Bowman, Robert/0000-0002-2114-1713
FU Department of Energy through Basic Energy Sciences [DE-FG02-ER46256];
National Science Foundation (NSF) [9724240]; MRSEC of the NSF
[DMR-520565]
FX We gratefully acknowledge support from the Department of Energy through
Basic Energy Sciences Grant DE-FG02-ER46256. The NMR facility at Caltech
was supported by the National Science Foundation (NSF) under Grant
9724240 and partially supported by the MRSEC Program of the NSF under
Award DMR-520565.
NR 19
TC 11
Z9 11
U1 1
U2 12
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD NOV 25
PY 2010
VL 114
IS 46
BP 19862
EP 19866
DI 10.1021/jp107911u
PG 5
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 681CU
UT WOS:000284287900043
ER
PT J
AU Gardner, SN
Jaing, CJ
McLoughlin, KS
Slezak, TR
AF Gardner, Shea N.
Jaing, Crystal J.
McLoughlin, Kevin S.
Slezak, Tom R.
TI A microbial detection array (MDA) for viral and bacterial detection
SO BMC GENOMICS
LA English
DT Article
ID OLIGONUCLEOTIDE MICROARRAY; INFLUENZA-VIRUSES; IDENTIFICATION;
HYBRIDIZATION; PATHOGENS
AB Background: Identifying the bacteria and viruses present in a complex sample is useful in disease diagnostics, product safety, environmental characterization, and research. Array-based methods have proven utility to detect in a single assay at a reasonable cost any microbe from the thousands that have been sequenced.
Methods: We designed a pan-Microbial Detection Array (MDA) to detect all known viruses (including phages), bacteria and plasmids and developed a novel statistical analysis method to identify mixtures of organisms from complex samples hybridized to the array. The array has broader coverage of bacterial and viral targets and is based on more recent sequence data and more probes per target than other microbial detection/discovery arrays in the literature. Family-specific probes were selected for all sequenced viral and bacterial complete genomes, segments, and plasmids. Probes were designed to tolerate some sequence variation to enable detection of divergent species with homology to sequenced organisms, and to have no significant matches to the human genome sequence.
Results: In blinded testing on spiked samples with single or multiple viruses, the MDA was able to correctly identify species or strains. In clinical fecal, serum, and respiratory samples, the MDA was able to detect and characterize multiple viruses, phage, and bacteria in a sample to the family and species level, as confirmed by PCR.
Conclusions: The MDA can be used to identify the suite of viruses and bacteria present in complex samples.
C1 [Gardner, Shea N.; Jaing, Crystal J.; McLoughlin, Kevin S.; Slezak, Tom R.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Slezak, TR (reprint author), Lawrence Livermore Natl Lab, POB 5508, Livermore, CA 94551 USA.
EM slezak1@llnl.gov
OI McLoughlin, Kevin/0000-0001-9651-4951
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; Lawrence Livermore National Laboratory [08-SI-002];
National Biodefense Analysis and Countermeasures Center [L164212/F0901];
Department of Energy [DE-AC52-07NA27344]
FX We gratefully acknowledge the generosity of Dr. Joseph DeRisi and his
lab and Dr. Robert Tesh for providing samples. We thank James Thissen
for performing the PCR tests for lab confirmation of the array results.
This work performed under the auspices of the U.S. Department of Energy
by Lawrence Livermore National Laboratory under Contract
DE-AC52-07NA27344. This work was supported by Laboratory Directed
Research and Development grant number 08-SI-002 from Lawrence Livermore
National Laboratory https://www.llnl.gov/ and the National Biodefense
Analysis and Countermeasures Center
http://www.dhs.gov/files/labs/gc_1166211221830.shtm award number
L164212/F0901. The funders had no role in the study design, data
collection and analysis, decision to publish, or preparation of the
manuscript. Opinions, interpretations, conclusions, and recommendations
are those of the authors and are not necessarily endorsed by the
National Biodefense Analysis and Countermeasures Center (NBACC),
Department of Homeland Security (DHS), or Battelle National Biodefense
Institute (BNBI).; There is a patent pending by the authors related to
the MDA array design and analysis methods. We are employees of Lawrence
Livermore National Security, LLC. LLNS, LLC manages the Lawrence
Livermore National Laboratory for the Department of Energy under the
contract DE-AC52-07NA27344.
NR 30
TC 42
Z9 45
U1 1
U2 8
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1471-2164
J9 BMC GENOMICS
JI BMC Genomics
PD NOV 25
PY 2010
VL 11
AR 668
DI 10.1186/1471-2164-11-668
PG 21
WC Biotechnology & Applied Microbiology; Genetics & Heredity
SC Biotechnology & Applied Microbiology; Genetics & Heredity
GA 695PU
UT WOS:000285385800001
PM 21108826
ER
PT J
AU Torkzaban, S
Kim, Y
Mulvihill, M
Wan, JM
Tokunaga, TK
AF Torkzaban, Saeed
Kim, Yongman
Mulvihill, Martin
Wan, Jiamin
Tokunaga, Tetsu K.
TI Transport and deposition of functionalized CdTe nanoparticles in
saturated porous media
SO JOURNAL OF CONTAMINANT HYDROLOGY
LA English
DT Article
DE Nanoparticles; Transport; Deposition; Ionic strengths
ID QUANTUM DOTS; COLLOID TRANSPORT; SOLUTION CHEMISTRY; PATCHY SURFACES;
SCALE ADHESION; QUARTZ SANDS; FULLERENE; NANOSCALE; KINETICS; MECHANISMS
AB Comprehensive understanding of the transport and deposition of engineered nanoparticles (NPs) in subsurface is required to assess their potential negative impact on the environment. We studied the deposition behavior of functionalized quantum dot (QD) NPs (CdTe) in different types of sands (Accusand, ultrapure quartz, and iron-coated sand) at various solution ionic strengths (IS). The observed transport behavior in ultrapure quartz and iron-coated sand was consistent with conventional colloid deposition theories. However, our results from the Accusand column showed that deposition was minimal at the lowest IS (1 mM) and increased significantly as the IS increased. The effluent breakthrough occurred with a delay, followed by a rapid rise to the maximum normalized concentration of unity. Negligible deposition in the column packed with ultrapure quartz sand (100 mM) and Accusand (1 mM) rules out the effect of straining and suggests the importance of surface charge heterogeneity in QD deposition in Accusand at higher IS. Data analyses further show that only a small fraction of sand surface area contributed in QD deposition even at the highest IS (100 mM) tested. The observed delay in breakthrough curves of QDs was attributed to the fast diffusive mass transfer rate of QDs from bulk solution to the sand surface and QD mass transfer on the solid phase. Scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) analysis were used to examine the morphology and elemental composition of sand grains. It was observed that there were regions on the sand covered with layers of clay particles. EDX spectra collected from these regions revealed that Si and Al were the major elements suggesting that the clay particles were kaolinite. Additional batch experiments using gold NPs and SEM analysis were performed and it was observed that the gold NPs were only deposited on clay particles originally on the Accusand surface. After removing the clays from the sand surface, we observed negligible QD deposition even at 100 mM IS. We proposed that nanoscale charge heterogeneities on clay particles on Accusand surface played a key role in QD deposition. It was shown that the value of solution IS determined the extent to which the local heterogeneities participated in particle deposition. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Torkzaban, Saeed; Kim, Yongman; Mulvihill, Martin; Wan, Jiamin; Tokunaga, Tetsu K.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Torkzaban, S (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA.
EM saeed.torkzaban@gmail.com
RI Torkzaban, Saeed/G-7377-2013; Tokunaga, Tetsu/H-2790-2014; Wan,
Jiamin/H-6656-2014; Kim, Yongman/D-1130-2015
OI Torkzaban, Saeed/0000-0002-5146-9461; Tokunaga,
Tetsu/0000-0003-0861-6128; Kim, Yongman/0000-0002-8857-1291
FU Office of Biological and Environmental Research, U.S. Department of
Energy [DE-AC02-05CH11231]
FX Funding was provided through the joint BER-EPA-NSF Nanoparticulate
Research Program of the Office of Biological and Environmental Research,
U.S. Department of Energy, under contract DE-AC02-05CH11231. The authors
are grateful to three anonymous referees for their critical reviews and
valuable comments that led to the improvement of the manuscript.
NR 47
TC 35
Z9 36
U1 3
U2 35
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0169-7722
EI 1873-6009
J9 J CONTAM HYDROL
JI J. Contam. Hydrol.
PD NOV 25
PY 2010
VL 118
IS 3-4
SI SI
BP 208
EP 217
DI 10.1016/j.jconhyd.2010.10.002
PG 10
WC Environmental Sciences; Geosciences, Multidisciplinary; Water Resources
SC Environmental Sciences & Ecology; Geology; Water Resources
GA 702LG
UT WOS:000285895600011
PM 21056917
ER
PT J
AU Le Beon, M
Klinger, Y
Al-Qaryouti, M
Meriaux, AS
Finkel, RC
Elias, A
Mayyas, O
Ryerson, FJ
Tapponnier, P
AF Le Beon, Maryline
Klinger, Yann
Al-Qaryouti, Mahmoud
Meriaux, Anne-Sophie
Finkel, Robert C.
Elias, Ata
Mayyas, Omar
Ryerson, Frederick J.
Tapponnier, Paul
TI Early Holocene and Late Pleistocene slip rates of the southern Dead Sea
Fault determined from Be-10 cosmogenic dating of offset alluvial
deposits
SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
LA English
DT Article
ID ACTIVE TECTONICS; YAMMOUNEH FAULT; TRANSFORM-FAULT; EXPOSURE AGES; ARABA
VALLEY; JORDAN; EARTHQUAKE; TIBET; RIFT; LEBANON
AB [1] Two sites located along the Wadi Araba Fault (WAF) segment of the Dead Sea Fault are targeted for tectonic-morphological analysis. Be-10 cosmogenic radionuclide (CRN) dating of embedded cobbles is used to constrain the age of offset alluvial surfaces. At the first site a 48 +/- 7 m offset alluvial fan, for which Be-10 CRN model ages average 11.1 +/- 4.3 ka, yield a slip rate of 5.4 +/- 2.7 mm/a, with conservative bounds of 1.3-16.4 mm/a. At the second site the scattered distributions of the Be-10 CRN ages from an offset bajada attest to the complex processes involved in sediment transport and emplacement. There, two offsets were identified. The 160 +/- 8 m offset of an incised alluvial fan dated at 37 +/- 5 ka shows a slip rate of 4.5 +/- 0.9 mm/a, with a conservative minimum value of 3.2 mm/a. A larger offset, 626 +/- 37 m, is derived from a prominent channel incised into the bajada. Cobbles from the bajada surface have ages from 33 to 141 ka, with a mean of 87 +/- 26 ka. A slip rate of 8.1 +/- 2.9 mm/a is derived from the mean age, with conservative bounds of 3.8-22.1 mm/a. These results and other published slip rates along the linear WAF segment, from GPS to geological time scales, lack the resolution to fully resolve the question of temporal variations versus consistency of the fault slip rate of the WAF. Yet, given the uncertainties, they are not inconsistent with each other.
C1 [Le Beon, Maryline; Klinger, Yann; Tapponnier, Paul] CNRS, Inst Phys Globe Paris, Equipe Tecton, F-75252 Paris 05, France.
[Al-Qaryouti, Mahmoud; Mayyas, Omar] Nat Resources Author, Seismol Div, Amman, Jordan.
[Meriaux, Anne-Sophie] Newcastle Univ, Sch Geog Polit & Sociol, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England.
[Finkel, Robert C.] Univ Calif Berkeley, EPS Dept, Berkeley, CA 94720 USA.
[Elias, Ata] Amer Univ Beirut, Dept Geol, Beirut, Lebanon.
[Ryerson, Frederick J.] Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA.
RP Le Beon, M (reprint author), Natl Taiwan Univ, Dept Geosci, 1 Roosevelt Rd,Sec 4, Taipei 10617, Taiwan.
EM lebeon@ipgp.jussieu.fr
RI Meriaux, Anne-Sophie/G-1754-2010; klinger, yann/B-1226-2011; Tapponnier,
.Paul/B-7033-2011
OI Tapponnier, .Paul/0000-0002-7135-1962
FU French INSU/CNRS; French Embassy in Jordan
FX We thank Jerome Van der Woerd for fruitful discussion during this work
and Anne-Claire Laurent-Morillon for digitalization of landscape
interpretations. Thoughtful reviews by G. Hilley and an anonymous
reviewer helped to improve the manuscript. Financial support was
provided by the French INSU/CNRS programs DyETI and ACI-FNS "Aleas et
changements globaux" and by the French Embassy in Jordan. This is IPGP
contribution number 3045.
NR 69
TC 14
Z9 14
U1 0
U2 8
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9313
EI 2169-9356
J9 J GEOPHYS RES-SOL EA
JI J. Geophys. Res.-Solid Earth
PD NOV 25
PY 2010
VL 115
AR B11414
DI 10.1029/2009JB007198
PG 24
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 686PI
UT WOS:000284707800004
ER
PT J
AU Lay, EH
Rodger, CJ
Holzworth, RH
Cho, MG
Thomas, JN
AF Lay, Erin H.
Rodger, Craig J.
Holzworth, Robert H.
Cho, Mengu
Thomas, Jeremy N.
TI Temporal-spatial modeling of electron density enhancement due to
successive lightning strokes
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID LOCATION NETWORK WWLLN; LOWER IONOSPHERE; ELECTROMAGNETIC PULSE;
DETECTION EFFICIENCY; UNITED-STATES; VLF; IONIZATION; ATMOSPHERE; ELVES;
SIMULATION
AB We report results on the temporal-spatial modeling of electron density enhancement due to successive lightning strokes. Stroke rates based on World-Wide Lightning Location Network measurements are used as input to an axisymmetric Finite Difference Time Domain model that describes the effect of lightning electromagnetic pulses (EMP) on the ionosphere. Each successive EMP pulse interacts with a modified background ionosphere due to the previous pulses, resulting in a nonlinear electron density perturbation over time that eventually reaches a limiting value. The qualitative ionospheric response to successive EMPs is presented in 2-D, axisymmetric space. Results from this study show that the nonlinear electron density perturbations due to successive lightning strokes must be taken into account and varies with altitude. The limiting maximum electron density is reached earlier in time for higher altitudes, and the most significant effect occurs at 88 km. The limiting modeled electron density profile in the 83-91 km altitude range does not depend on the initial electron density.
C1 [Lay, Erin H.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Cho, Mengu] Kyushu Inst Technol, Dept Elect Engn, Kitakyushu, Fukuoka 8040011, Japan.
[Holzworth, Robert H.; Thomas, Jeremy N.] Univ Washington, Dept Earth & Space Sci, Seattle, WA 98195 USA.
[Rodger, Craig J.] Univ Otago, Dept Phys, Dunedin 9016, New Zealand.
[Thomas, Jeremy N.] Digipen Inst Technol, Dept Elect & Comp Engn, Redmond, WA USA.
RP Lay, EH (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RI Rodger, Craig/A-1501-2011;
OI Rodger, Craig/0000-0002-6770-2707; Lay, Erin/0000-0002-1310-9035
NR 42
TC 7
Z9 7
U1 1
U2 7
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD NOV 25
PY 2010
VL 115
AR A00E59
DI 10.1029/2009JA014756
PG 8
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 686PX
UT WOS:000284709300001
ER
PT J
AU Bylaska, EJ
Glaesemann, KR
Felmy, AR
Vasiliu, M
Dixon, DA
Tratnyek, PG
AF Bylaska, Eric J.
Glaesemann, Kurt R.
Felmy, Andrew R.
Vasiliu, Monica
Dixon, David A.
Tratnyek, Paul G.
TI Free Energies for Degradation Reactions of 1,2,3-Trichloropropane from
ab Initio Electronic Structure Theory
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID ACTIVE THERMOCHEMICAL TABLES; HALOGENATED ALIPHATIC-COMPOUNDS; SOLVATION
FREE-ENERGIES; ZERO-VALENT METALS; CARBON-TETRACHLORIDE; CHLORINATED
METHANES; REDUCTIVE DECHLORINATION; THRESHOLD PHOTODETACHMENT;
POLYCHLORINATED ETHYLENES; RATE CONSTANTS
AB Electronic structure methods were used to calculate the gas and aqueous phase reaction energies for reductive dechlorination (i.e., hydrogenolysis), reductive beta-elimination, dehydrochlorination, and nucleophilic substitution by OH(-) of 1,2,3-trichloropropane. The thermochemical properties Delta H degrees(f)(298.15 K), S degrees(298.15 K, 1 bar), and Delta G(s)(298.15 K, 1 bar) were calculated by using ab initio electronic structure calculations, isodesmic reactions schemes, gas-phase entropy estimates, and continuum solvation models for 1,2,3-trichloropropane and several likely degradation products: CH(3)-CHCl-CH(2)Cl, CH(2)Cl-CH(2)-CH(2)Cl, C(center dot)H(2)-CHCl-CH(2)Cl, CH(2)Cl-C(center dot)H-CH(2)Cl, CH(2)=CCl-CH(2)Cl, cis-CHCl=CH-CH(2)Cl, trans-CHCl=CH-CH(2)Cl, CH(2)=CH-CH(2)Cl, CH(2)Cl-CHCl-CH(2)OH, CH(2)Cl-CHOH-CH(2)Cl, CH(2)=CCl-CH(2)OH, CH(2)=COH-CH(2)Cl, cis-CHOH=CH-CH(2)Cl, trans-CHOH=CH-CH(2)Cl, CH(=O)-CH(2)-CH(2)Cl, and CH(3)-C(=O)-CH(2)Cl. On the basis of these thermochemical estimates, together with a Fe(II)/Fe(III) chemical equilibrium model for natural reducing environments, all of the reactions studied were predicted to be very favorable in the standard state and under a wide range of pH conditions. The most favorable reaction was reductive beta-elimination (Delta G degrees(rxn) approximate to -32 kcal/mol), followed closely by reductive dechlorination (Delta G degrees(rxn) approximate to -27 kcal/mol), dehydrochlorination (Delta G degrees(rxn) approximate to -27 kcal/mol), and nucleophilic substitution by OH(-) (Delta G degrees(rxn) approximate to -25 kcal/mol). For both reduction reactions studied, it was found that the first electron-transfer step, yielding the intermediate C(center dot)H(2)-CHCl-CH(2)Cl and the CH(2)Cl-C(center dot)H-CH(2)Cl species, was not favorable in the standard state (Delta G degrees(rxn) approximate to +15 kcal/mol) and was predicted to occur only at relatively high pH values. This result suggests that reduction by natural attenuation is unlikely.
C1 [Bylaska, Eric J.; Glaesemann, Kurt R.] Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, Richland, WA 99352 USA.
[Felmy, Andrew R.] Pacific NW Natl Lab, Fundamental Sci Div, Richland, WA 99352 USA.
[Vasiliu, Monica; Dixon, David A.] Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA.
[Tratnyek, Paul G.] Oregon Hlth & Sci Univ, OGI Sch Sci & Engn, Beaverton, OR 97006 USA.
RP Bylaska, EJ (reprint author), Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, POB 999, Richland, WA 99352 USA.
EM eric.bylaska@pnl.gov
OI Glaesemann, Kurt/0000-0002-9512-1395
FU BES Nanoscale Science, Engineering, and Technology program; BES Division
of Chemical Sciences, Geosciences, and BioSciences of the U.S.
Department of Energy, Office of Science [DE-AC05-76RL01830]; Department
of Energy's Office of Biological and Environmental Research at Pacific
Northwest National Laboratory
FX This research was supported by BES Nanoscale Science, Engineering, and
Technology program and BES Geosciences program under the BES Division of
Chemical Sciences, Geosciences, and BioSciences of the U.S. Department
of Energy, Office of Science, under Grant No. DE-AC05-76RL01830. Some of
the calculations were performed on the Spokane and Chinook computing
systems at EMSL, a national scientific user facility sponsored by the
Department of Energy's Office of Biological and Environmental Research
and located at Pacific Northwest National Laboratory. The Pacific
Northwest National Laboratory is operated by Battelle Memorial
Institute. We also wish to thank the Scientific Computing Staff, Office
of Energy Research, and the U.S. Department of Energy for a grant of
computer time at the National Energy Research Scientific Computing
Center (Berkeley, CA).
NR 101
TC 6
Z9 6
U1 5
U2 17
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD NOV 25
PY 2010
VL 114
IS 46
BP 12269
EP 12282
DI 10.1021/jp105726u
PG 14
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 681CS
UT WOS:000284287500018
PM 21038905
ER
PT J
AU Bravaya, KB
Kostko, O
Dolgikh, S
Landau, A
Ahmed, M
Krylov, AI
AF Bravaya, Ksenia B.
Kostko, Oleg
Dolgikh, Stanislav
Landau, Arie
Ahmed, Musahid
Krylov, Anna I.
TI Electronic Structure and Spectroscopy of Nucleic Acid Bases: Ionization
Energies, Ionization-Induced Structural Changes, and Photoelectron
Spectra
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID INFRARED-LASER SPECTROSCOPY; VACUUM-ULTRAVIOLET PHOTOIONIZATION;
MOLECULAR-ORBITAL METHODS; COUPLED-CLUSTER METHODS; BASIS-SETS;
GAS-PHASE; AB-INITIO; HELIUM NANODROPLETS; RADICAL CATIONS;
PROTON-TRANSFER
AB We report high-level ab initio calculations and single-photon ionization mass spectrometry study of ionization of adenine (A), thymine (T), cytosine (C), and guanine (G). For thymine and adenine, only the lowest-energy tautomers were considered, whereas for cytosine and guanine we characterized the five lowest-energy tautomeric forms. The first adiabatic and several vertical ionization energies were computed using the equation-of-motion coupled-cluster method for ionization potentials with single and double substitutions. Equilibrium structures of the cationic ground states were characterized by DFT with the omega B97X-D functional. The ionization-induced geometry changes of the bases are consistent with the shapes of the corresponding molecular orbitals. For the lowest-energy tautomers, the magnitude of the structural relaxation decreases in the following series, G > C > A > T, the respective relaxation energies being 0.41, 0.32, 0.25, and 0.20 eV. The computed adiabatic ionization energies (8.13, 8.89, 8.51-8.67, and 7.75-7.87 eV for A, T, C, and G, respectively) agree well with the onsets of the photoionization efficiency (PIE) curves (8.20 +/- 0.05, 8.95 +/- 0.05, 8.60 +/- 0.05, and 7.75 +/- 0.05 eV). Vibrational progressions for the S(0)-D(0) vibronic bands computed within double-harmonic approximation with Duschinsky rotations are compared with previously reported experimental photoelectron spectra and differentiated PIE curves.
C1 [Bravaya, Ksenia B.; Dolgikh, Stanislav; Landau, Arie; Krylov, Anna I.] Univ So Calif, Dept Chem, Los Angeles, CA 90089 USA.
[Kostko, Oleg; Ahmed, Musahid] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Krylov, AI (reprint author), Univ So Calif, Dept Chem, Los Angeles, CA 90089 USA.
RI Ahmed, Musahid/A-8733-2009; Kostko, Oleg/B-3822-2009; Dolgikh,
Stanislav/A-7684-2014
OI Kostko, Oleg/0000-0003-2068-4991;
FU National Science Foundation through the CRIF:CRF [CHE-0625419, 0624602,
0625237, CHE-0951634]; Office of Energy Research, Office of Basic Energy
Sciences, Chemical Sciences Division of the U.S. Department of Energy
[DE-AC02-05CH11231]
FX This work was conducted in the framework of the iOpenShell Center for
Computational Studies of Electronic Structure and Spectroscopy of
Open-Shell and Electronically Excited Species (iopenshell.usc.edu)
supported by the National Science Foundation through the CRIF:CRF
CHE-0625419 + 0624602 + 0625237 and CHE-0951634 (A.I.K.) grants. O.K.
and M.A. acknowledge support by the Director, Office of Energy Research,
Office of Basic Energy Sciences, Chemical Sciences Division of the U.S.
Department of Energy under contract no. DE-AC02-05CH11231.
NR 76
TC 55
Z9 55
U1 5
U2 45
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD NOV 25
PY 2010
VL 114
IS 46
BP 12305
EP 12317
DI 10.1021/jp1063726
PG 13
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 681CS
UT WOS:000284287500022
PM 21038927
ER
PT J
AU Wick, CD
Chang, TM
Dang, LX
AF Wick, Collin D.
Chang, Tsun-Mei
Dang, Liem X.
TI Molecular Mechanism of CO2 and SO2 Molecules Binding to the Air/Liquid
Interface of 1-Butyl-3-methylimidazolium Tetrafluoroborate Ionic Liquid:
A Molecular Dynamics Study with Polarizable Potential Models
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID SUM-FREQUENCY GENERATION; TEMPERATURE MOLTEN-SALTS; FORCE-FIELD;
CARBON-DIOXIDE; SURFACE-TENSION; AIR/WATER INTERFACE; SIMULATIONS;
MONOETHANOLAMINE; SOLUBILITY; SEPARATION
AB Molecular dynamics simulations with many-body interactions were carried out to understand the bulk and interfacial absorption of gases in 1-butyl-3-methylimidazolium tetrafluoroborate (BMIMBF4). A new polarizable molecular model was developed for BMIMBF4, which was found to give the correct liquid density but which also had good agreement with experiment for its surface tension and X-ray reflectivity. The potential of mean force of CO2 and SO2 was calculated across the air BMIMBF4 interface, and the bulk free energies were calculated with the free-energy perturbation method. A new polarizable model was also developed for CO2. The air BMIMBF4 interface had enhanced BMIM density, which was mostly related to its butyl group, followed by enhanced BF4 density a few angstroms toward the liquid bulk. The density profiles were observed to exhibit oscillations between high BMIM and BF4 density indicating the presence of surface layering induced by the interface. The potential of mean force for CO2 and SO2 showed more negative free energies in regions of enhanced BF4 density, while more positive free energies were found in regions of high BMIM density. Moreover, these gases showed free-energy minimums at the interface, where the BMIM alkyl groups were found to be most prevalent. Our results show the importance of ionic liquid interfacial ordering for understanding gas solvation in them.
C1 [Dang, Liem X.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Wick, Collin D.] Louisiana Tech Univ, Ruston, LA 71270 USA.
[Chang, Tsun-Mei] Univ Wisconsin, Parkside, WI 53141 USA.
RP Dang, LX (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
FU Division of Chemical Sciences, Geosciences and Biosciences, Office of
Basic Energy Sciences, U.S. Department of Energy; Pacific Northwest
National Laboratory's (PNNL) Energy Conversion Initiative (ECI),
Internal Laboratory Directed Research and Development (LDRD); Louisiana
Board of Regents [3LEQSF(2008-11)-RD-A-21]
FX This work was funded by the Division of Chemical Sciences, Geosciences
and Biosciences, Office of Basic Energy Sciences, U.S. Department of
Energy and by the Pacific Northwest National Laboratory's (PNNL) Energy
Conversion Initiative (ECI), Internal Laboratory Directed Research and
Development (LDRD). Battelle operates the Pacific Northwest National
Laboratory for the U.S. Department of Energy. In addition, some of the
research was funded by the Louisiana Board of Regents Research
Competitiveness Subprogram contract number 3LEQSF(2008-11)-RD-A-21. The
calculations were carried out using the resources from the Louisiana
Optical Network Initiative (LONI) and from the computer resources
provided by the Office of Basic Energy Sciences, U.S. Department of
Energy.
NR 76
TC 32
Z9 32
U1 13
U2 62
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD NOV 25
PY 2010
VL 114
IS 46
BP 14965
EP 14971
DI 10.1021/jp106768y
PG 7
WC Chemistry, Physical
SC Chemistry
GA 681CT
UT WOS:000284287700021
PM 20882993
ER
PT J
AU Shi, W
Sorescu, DC
AF Shi, Wei
Sorescu, Dan C.
TI Molecular Simulations of CO2 and H-2 Sorption into Ionic Liquid
1-n-Hexyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)amide
([hmim][Tf2N]) Confined in Carbon Nanotubes
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID MONTE-CARLO; HYDROGEN ADSORPTION; GIBBS ENSEMBLE; FLUIDS; SOLVENTS;
TRANSITION; DIFFUSION; DYNAMICS; FUTURE; GASES
AB Atomistic simulations are used to study the ionic liquid (IL) 1-n-hexyl-3-methylimidazolium bis(trifluoromethylsulfonypl)amide ([hmim][Tf2N]) confined into (20,20) and (9,9) carbon nanotubes (CNTs) and the effect of confinement upon gas sorption. The cations and the anions exhibit highly ordered structures in the CNT. There are more cations adsorbed close to the (20,20) tube wall while more anions adsorb in the tube center at high IL loadings. The IL molecules in the CNT exhibit self-diffusivity coefficients about 1-2 orders of magnitude larger than the corresponding bulk IL molecules. Sorption of CO2 and H-2 gases in the composite material consisting of CNT and IL indicates that H-2 molecules diffuse about 1.5 times faster than the CO2. In contrast, H-2 diffuses about 10 times faster than CO2 in both the CNT and in bulk IL. The CNT exhibits the largest amount of sorption for both CO2 and H-2, followed by the composite material, and the IL exhibits the least gas sorption. When the temperature is increased, the amount of sorbed CO2 decreases in all three types of systems (IL, CNT, and the composite material) while the H-2 sorption increases in [hmim][Tf2N], decreases in the CNT, and does not change significantly in the composite material. The composite material exhibits higher sorption selectivity for CO2/H-2 than both the IL and the CNT. It is very interesting to note that the IL molecules can be dissolved in the CO2 molecules under confinement due to a favorable negative transferring energy. However, in the absence of confinement the IL molecules will not dissolve in the CO2 due to a very large unfavorable positive transferring energy.
C1 [Shi, Wei; Sorescu, Dan C.] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
[Shi, Wei] URS Corp, South Pk, PA USA.
RP Shi, W (reprint author), US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
EM shiw@netl.doe.gov
FU RES [DE-FE0004000]
FX This technical effort was performed in support of the National Energy
Technology Laboratory's ongoing research in computational chemistry
under the RES contract DE-FE0004000.
NR 38
TC 25
Z9 25
U1 5
U2 71
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD NOV 25
PY 2010
VL 114
IS 46
BP 15029
EP 15041
DI 10.1021/jp106500p
PG 13
WC Chemistry, Physical
SC Chemistry
GA 681CT
UT WOS:000284287700030
PM 21047100
ER
PT J
AU Santabarbara, S
Kuprov, I
Poluektov, O
Casal, A
Russell, CA
Purton, S
Evans, MCW
AF Santabarbara, Stefano
Kuprov, Ilya
Poluektov, Oleg
Casal, Antonio
Russell, Charlotte A.
Purton, Saul
Evans, Michael C. W.
TI Directionality of Electron-Transfer Reactions in Photosystem I of
Prokaryotes: Universality of the Bidirectional Electron-Transfer Model
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID CORRELATED RADICAL PAIRS; PHOTOSYNTHETIC REACTION CENTERS; BACTERIUM
RHODOBACTER-SPHAEROIDES; ECHO ENVELOPE MODULATION; REACTION-CENTER
SUBUNITS; SPIN-SPIN INTERACTIONS; SITE-DIRECTED MUTANTS;
CHLAMYDOMONAS-REINHARDTII; PARAMAGNETIC-RESONANCE; CHARGE SEPARATION
AB The electron-transfer (ET) reactions in photosystem I (PS I) of prokaryotes have been investigated in wildtype cells of the cyanobacterium Synechocystis sp. PCC 6803, and in two site-directed mutants in which the methionine residue of the reaction center subunits PsaA and PsaB, which acts as the axial ligand to the primary electron chlorophyll acceptor A(0), was substituted with histidine. Analysis by pulsed electron paramagnetic resonance spectroscopy at 100 K indicates the presence of two forms of the secondary spin-correlated radical pairs, which are assigned to [P(700)(+)A(1A)(-)] and [P(700)(+)A(1B)(-)], where A(1A) and A(1B) are the phylloquinone molecules bound to the PsaA and the PsaB reaction center subunits, respectively. Each of the secondary radical pair forms is selectively observed in either the PsaA-M688H or the PsaB-M668H mutant, whereas both radical pairs are observed in the wild type following reduction of the iron-sulfur cluster F(X), the intermediate electron acceptor between A(1) and the terminal acceptors FA and F(B). Analysis of the time and spectral dependence of the light-induced electron spin echo allows the resolution of structural differences between the [P(700)(+)A(1A)(-)] and [P(700)(+)A(1B)(-)] radical pairs. The interspin distance is 25.43 +/- 0.01 angstrom for [P(700)(+) A(1A)(-)] and 24.25 +/- 0.01 angstrom for [P(700)(+)A(1B)(-)]. Moreover, the relative orientation of the interspin vector is rotated by similar to 60 degrees with respect to the g-tensor of the P(700)(+) radical. These estimates are in agreement with the crystallographic structural model, indicating that the cofactors bound to both reaction center subunits of prokaryotic PS I are actively involved in electron transport. This work supports the model that bidirectionality is a general property of type I reaction centers from both prokaryotes and eukaryotes, and contrasts with the situation for photosystem II and other type II reaction centers, in which ET is strongly asymmetric. A revised model that explains qualitatively the heterogeneity of ET reactions at cryogenic temperatures is discussed.
C1 [Santabarbara, Stefano; Casal, Antonio; Purton, Saul; Evans, Michael C. W.] UCL, Dept Biol, London WC1E 6BT, England.
[Santabarbara, Stefano] Univ Strathclyde, Dept Phys, Glasgow G4 0NG, Lanark, Scotland.
[Kuprov, Ilya] Univ Oxford, Dept Chem, Phys & Theoret Chem Lab, Oxford OX1 3QZ, England.
[Poluektov, Oleg] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Russell, Charlotte A.] Univ London, Sch Biol Sci, London E1 4NS, England.
RP Santabarbara, S (reprint author), CNR, Ist Biofis, Via Celoria 26, I-20133 Milan, Italy.
EM stefano.santabarbara@cnr.it
OI Purton, Saul/0000-0002-9342-1773; Santabarbara,
Stefano/0000-0002-7993-2614
FU U.K. Biotechnology and Biological Sciences Research Council (BBSRC)
[B18658]; Leverhulme Trust [F/07134/N]; Division of Chemical Sciences,
Geosciences, and Biosciences, Office of Basic Energy Sciences of the
U.S. Department of Energy [DE-AC02-06CH11357]
FX This work was supported by grant B18658 from the U.K. Biotechnology and
Biological Sciences Research Council (BBSRC) and grant F/07134/N from
the Leverhulme Trust. O.P. acknowledges support from the Division of
Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy
Sciences of the U.S. Department of Energy through Grant
DE-AC02-06CH11357. We thank Drs. P. Heathcote and W.V. Fairclough (Queen
Mary, University of London) for their involvement in the initial stages
of the design and construction of the site-directed mutants and P. J.
Hore for comments on the manuscript. S.S. thanks Dr. F. Rappaport and B.
Bailleul (IBPC, Paris) for helpful comments and extensive discussion
relating to ET at cryogenic temperatures.
NR 84
TC 17
Z9 17
U1 0
U2 13
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD NOV 25
PY 2010
VL 114
IS 46
BP 15158
EP 15171
DI 10.1021/jp1044018
PG 14
WC Chemistry, Physical
SC Chemistry
GA 681CT
UT WOS:000284287700045
PM 20977227
ER
PT J
AU Ojeda, M
Li, AW
Nabar, R
Nilekar, AU
Mavrikakis, M
Iglesia, E
AF Ojeda, Manuel
Li, Anwu
Nabar, Rahul
Nilekar, Anand U.
Mavrikakis, Manos
Iglesia, Enrique
TI Kinetically Relevant Steps and H-2/D-2 Isotope Effects in
Fischer-Tropsch Synthesis on Fe and Co Catalysts
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID IRON-BASED CATALYSTS; HETEROGENEOUS METHANATION; SURFACES; SELECTIVITY;
ACTIVATION; ADSORPTION; DISSOCIATION; PATHWAYS; EXCHANGE; ABSENCE
AB H-2/D-2 isotope effects on Fischer-Tropsch synthesis (FTS) rate and selectivity are examined here by combining measured values on Fe and Co at conditions leading to high C5+ yields with theoretical estimates on model Fe(110) and Co(0001) surfaces with high coverages of chemisorbed CO (CO*). Inverse isotope effects (r(H)/r(D) < 1) are observed on Co and Fe catalysts as a result of compensating thermodynamic (H-2 dissociation to H*; H* addition to CO* species to form HCO*) and kinetic (H* reaction with HCO*) isotope effects. These isotopic effects and their rigorous mechanistic interpretation confirm the prevalence of H-assisted CO dissociation routes on both Fe and Co catalysts, instead of unassisted pathways that would lead to similar rates with H-2 and D-2 reactants. The small contributions from unassisted pathways to CO conversion rates on Fe are indeed independent of the dihydrogen isotope, as is also the case for the rates of primary reactions that form CO2 as the sole oxygen rejection route in unassisted CO dissociation paths. Isotopic effects on the selectivity to C5+ and CH4 products are small, and D-2 leads to a more paraffinic product than does H-2, apparently because it leads to preference for chain termination via hydrogen addition over abstraction. These results are consistent with FTS pathways limited by H-assisted CO dissociation on both Fe and Co and illustrate the importance of thermodynamic contributions to inverse isotope effects for reactions involving quasi-equilibrated H-2 dissociation and the subsequent addition of H* in hydrogenation catalysis, as illustrated here by theory and experiment for the specific case of CO hydrogenation.
C1 [Nabar, Rahul; Nilekar, Anand U.; Mavrikakis, Manos] Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI 53706 USA.
[Ojeda, Manuel; Li, Anwu; Iglesia, Enrique] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
[Ojeda, Manuel; Li, Anwu; Iglesia, Enrique] EO Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Mavrikakis, M (reprint author), Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI 53706 USA.
EM manos@engr.wisc.edu; iglesia@berkeley.edu
RI Ojeda, Manuel/A-8584-2008; Mavrikakis, Manos/D-5702-2012; Iglesia,
Enrique/D-9551-2017
OI Mavrikakis, Manos/0000-0002-5293-5356; Iglesia,
Enrique/0000-0003-4109-1001
FU Office of Basic Energy Sciences, Chemical Science Division of the U.S.
Department of Energy [DE-FC26-98FT40308]; BP; Methane Conversion
Cooperative at the University of California at Berkeley; Ministerio de
Educacion y Ciencia (Spain); European Commission [MOIF-CT-2005-007651];
DOE-NETL [DE-FC26-03NT41966]; DOE-BES; Department of Energy's Office of
Biological and Environmental Research located at PNNL; U.S. Department
of Energy, Office of Science [DE-AC02-06CH11357, DEAC05-00OR22725,
DE-AC02-05CH11231]
FX This work was supported by the Director, Office of Basic Energy
Sciences, Chemical Science Division of the U.S. Department of Energy
under Contract DE-FC26-98FT40308 and by BP as part of the Methane
Conversion Cooperative at the University of California at Berkeley. M.O.
acknowledges a postdoctoral fellowship from the Ministerio de Educacion
y Ciencia (Spain) and the European Commission (Marie Curie
MOIF-CT-2005-007651 Action). Work at UW-Madison has been supported by
DOE-NETL (DE-FC26-03NT41966) and DOE-BES. The computational work was
performed in part using supercomputing resources from the following
institutions: EMSL, a National scientific user facility at Pacific
Northwest National Laboratory (PNNL); the Center for Nanoscale Materials
at Argonne National Laboratory (ANL); the National Center for
Computational Sciences at Oak Ridge National Laboratory (ORNL); and the
National Energy Research Scientific Computing Center (NERSC). EMSL is
sponsored by the Department of Energy's Office of Biological and
Environmental Research located at PNNL. CNM, NCCS, and ORNL are
supported by the U.S. Department of Energy, Office of Science, under
contracts DE-AC02-06CH11357, DEAC05-00OR22725, and DE-AC02-05CH11231,
respectively.
NR 34
TC 48
Z9 48
U1 4
U2 63
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD NOV 25
PY 2010
VL 114
IS 46
BP 19761
EP 19770
DI 10.1021/jp1073076
PG 10
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 681CU
UT WOS:000284287900029
ER
PT J
AU DeCaluwe, SC
Grass, ME
Zhang, CJ
El Gabaly, F
Bluhm, H
Liu, Z
Jackson, GS
McDaniel, AH
McCarty, KF
Farrow, RL
Linne, MA
Hussain, Z
Eichhorn, BW
AF DeCaluwe, Steven C.
Grass, Michael E.
Zhang, Chunjuan
El Gabaly, Farid
Bluhm, Hendrik
Liu, Zhi
Jackson, Gregory S.
McDaniel, Anthony H.
McCarty, Kevin F.
Farrow, Roger L.
Linne, Mark A.
Hussain, Zahid
Eichhorn, Bryan W.
TI In Situ Characterization of Ceria Oxidation States in High-Temperature
Electrochemical Cells with Ambient Pressure XPS
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID RAY PHOTOELECTRON-SPECTROSCOPY; OXIDE FUEL-CELLS; SOFC ANODES;
REDUCTION; SURFACES; CEO2; NANOPARTICLES; HYDROGEN; NI; ELECTROLYSIS
AB Ambient pressure X-ray photoelectron spectroscopy (XPS) is used to measure near-surface oxidation states and local electric potentials of thin-film ceria electrodes operating in solid oxide electrochemical cells for H2O electrolysis and H-2 oxidation. Ceria electrodes which are 300 nm thick are deposited on YSZ electrolyte supports with porous Pt counter electrodes for single-chamber tests in H-2/H2O mixtures. Between 635 and 740 degrees C, equilibrium (zero-bias) near-surface oxidation states between 70 and 85% Ce3+ confirm increased surface reducibility relative to bulk ceria. Positive cell biases drive H2O electrolysis on ceria and further increase the percentage of Ce3+ on the surface over 100 mu m from an Au current collector, signifying broad regions of electrochemical activity due to mixed ionic-electronic conductivity of ceria. Negative biases to drive H-2 oxidation decrease the percentage of Ce3+ from equilibrium values but with higher electrode impedances relative to H2O electrolysis. Additional tests indicate that increasing H-2-to-H2O ratios enhances ceria activity for electrolysis.
C1 [DeCaluwe, Steven C.; Zhang, Chunjuan; Jackson, Gregory S.; Eichhorn, Bryan W.] Univ Maryland, College Pk, MD 20742 USA.
[Grass, Michael E.; Bluhm, Hendrik; Liu, Zhi] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[El Gabaly, Farid; McDaniel, Anthony H.; McCarty, Kevin F.; Farrow, Roger L.; Linne, Mark A.; Hussain, Zahid] Sandia Natl Labs, Livermore, CA 94551 USA.
RP Jackson, GS (reprint author), Univ Maryland, College Pk, MD 20742 USA.
EM gsjackso@umd.edu
RI DeCaluwe, Steven/B-6074-2011; McCarty, Kevin/F-9368-2012; Liu,
Zhi/B-3642-2009; Jackson, Gregory/N-9919-2014
OI McCarty, Kevin/0000-0002-8601-079X; Liu, Zhi/0000-0002-8973-6561;
Jackson, Gregory/0000-0002-8928-2459
FU Office of Naval Research [N000140510711]; Office of Energy Research,
Office of Basic Energy Sciences, and Chemical Sciences Division of the
U.S. Department of Energy [DEAC02-05CH11231]; United States Department
of Energy [DE-AC04-94AL85000]
FX UMD participants acknowledge the support of the Office of Naval Research
through Contract No. N000140510711 (Dr. Michele Anderson, program
manager). Work at LBNL and the ALS was supported by the Director, Office
of Energy Research, Office of Basic Energy Sciences, and Chemical
Sciences Division of the U.S. Department of Energy under contract No.
DEAC02-05CH11231. Work by Sandia National Laboratories was supported by
the Laboratory Directed Research and Development program through
Contract No. DE-AC04-94AL85000 of the United States Department of
Energy. UMD authors acknowledge the assistance of Mr. Tom Loughran of
the Nanocenter who facilitated in cell fabrication.
NR 51
TC 44
Z9 44
U1 7
U2 81
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD NOV 25
PY 2010
VL 114
IS 46
BP 19853
EP 19861
DI 10.1021/jp107694z
PG 9
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 681CU
UT WOS:000284287900042
ER
PT J
AU Barabash, RI
Ice, GE
AF Barabash, Rozaliya I.
Ice, Gene E.
TI Local and near surface structure from diffraction Preface
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Editorial Material
DE X-ray diffraction; Neutron diffraction; Materials structure
AB This special topic of Materials Science and Engineering A highlights novel applications of X-ray and neutron diffraction for the analysis of a range of materials, including conventional and nanostructured materials, thin films, bio-inspired materials, and superalloys. The development of ultra-brilliant synchrotron X-ray sources and recent advances in neutron diffraction provide important new opportunities for the analysis of local and near surface material structures at multiple length scales. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Barabash, Rozaliya I.; Ice, Gene E.] Oak Ridge Natl Lab, MST Div, Oak Ridge, TN 37831 USA.
[Barabash, Rozaliya I.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
RP Barabash, RI (reprint author), Oak Ridge Natl Lab, MST Div, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
EM barabashr@ornl.gov
NR 0
TC 1
Z9 1
U1 0
U2 3
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD NOV 25
PY 2010
VL 528
IS 1
BP 1
EP 2
DI 10.1016/j.msea.2010.08.065
PG 2
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 687OQ
UT WOS:000284788200001
ER
PT J
AU Pang, JWL
Ice, GE
Liu, WJ
AF Pang, Judy W. L.
Ice, Gene E.
Liu, Wenjun
TI The role of crystal orientation and surface proximity in the
self-similar behavior of deformed Cu single crystals
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE Synchrotron X-ray diffraction; Plasticity
ID STOCHASTIC DISLOCATION DYNAMICS; PLASTIC-DEFORMATION; FLOW-STRESS;
MICROSCOPY; FIELD
AB We report on novel 3D spatially resolved X-ray diffraction microscopy studies of self-affine behavior in deformed single crystals. This study extends surface profile measurements of self-affined morphology changes in single crystals during deformation to include local lattice rotations and sub-surface behavior. Investigations were made on the spatial correlation of the local lattice rotations in 8% tensile deformed Cu single crystals oriented with [1 2 3], [1 1 1] and [0 0 1] axes parallel to the tensile axis. The nondestructive depth-resolved measurements were made over a length scale of one to hundreds of micrometers. Self-affined correlation was found both at the surface and below the surface of the samples. A universal exponent for the power-law similar to that observed with surface profile methods is found at the surface of all samples but crystallographically sensitive changes are observed as a function of depth. Correlation lengths of the self-affine behavior vary with the [1 2 3] crystal exhibiting the longest self-affine length scale of 70 mu m with only 18 mu m for the [1 1 1] and [0 0 1] crystals. These measurements illuminate the transition from surface-like to bulk-like deformation behavior and provide new quantitative information to guide emerging models of self-organized structures in plasticity. Published by Elsevier B.V.
C1 [Pang, Judy W. L.; Ice, Gene E.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Liu, Wenjun] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Pang, JWL (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, 1 Behtel Valley Rd, Oak Ridge, TN 37831 USA.
EM pangj@ornl.gov
FU U.S. Department of Energy, Office of Basic Energy Sciences, Materials
Sciences and Engineering Division [DE-AC05-00OR22725]; UT-Battelle, LLC;
DOE, Office of Basic Energy Sciences, Scientific User Facilities
Division [W-31-109-ENF-38]; Argonne National Laboratory
FX Research sponsored by the U.S. Department of Energy, Office of Basic
Energy Sciences, Materials Sciences and Engineering Division under
contract DE-AC05-00OR22725 with UT-Battelle, LLC. Work in part on
beamline 34-ID at the Advanced Photon Source which is supported by the
DOE, Office of Basic Energy Sciences, Scientific User Facilities
Division under contract No. W-31-109-ENF-38 with Argonne National
Laboratory.
NR 26
TC 6
Z9 6
U1 0
U2 8
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD NOV 25
PY 2010
VL 528
IS 1
BP 28
EP 31
DI 10.1016/j.msea.2010.05.031
PG 4
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 687OQ
UT WOS:000284788200004
ER
PT J
AU Barabash, RI
Gao, YF
Ice, GE
Barabash, OM
Chung, JS
Liu, W
Kroger, R
Lohmeyer, H
Sebald, K
Gutowski, J
Bottcher, T
Hommel, D
AF Barabash, R. I.
Gao, Y. F.
Ice, G. E.
Barabash, O. M.
Chung, Jin-Seok
Liu, W.
Kroeger, R.
Lohmeyer, H.
Sebald, K.
Gutowski, J.
Boettcher, T.
Hommel, D.
TI Mapping strain gradients in the FIB-structured InGaN/GaN multilayered
films with 3D X-ray microbeam
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE Strain; Nitride semiconductors; X-ray microbeam; Dislocations; Lattice
rotations
ID DEFORMATION; PLASTICITY; ANISOTROPY; STRESS; SCALE
AB This research presents a combined experimental-modeling study of lattice rotations and deviatoric strain gradients induced by focused-ion beam (FIB) milling in nitride heterostructures. 3D X-ray polychromatic microdiffraction (PXM) is used to map the local lattice orientation distribution in FIB-structured areas. Results are discussed in connection with microphotoluminescence (mu-PL), fluorescent analysis, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) data. It is demonstrated that FIB-milling causes both direct and indirect damage to the InGaN/GaN layers. In films subjected to direct ion beam impact, a narrow amorphidized top layer is formed. Near the milling area, FIB-induced stress relaxation and formation of complicated 3D strain fields are observed. The resulting lattice orientation changes are found to correlate with a decrease and/or loss of PL intensity, and agree well with finite element simulations of the three-dimensional strain fields near the relaxed trenches. Experimentally, it is found that the lattice surface normal has an in-plane rotation, which only appears in simulations when the GaN-substrate lattice mismatch annihilates the InGaN-substrate mismatch. This behavior further supports the notion that the film/substrate interface is incoherent. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Barabash, R. I.; Ice, G. E.; Barabash, O. M.; Chung, Jin-Seok] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Barabash, R. I.; Gao, Y. F.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
[Gao, Y. F.] Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA.
[Chung, Jin-Seok] Soongsil Univ, Dept Phys, Seoul, South Korea.
[Liu, W.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Kroeger, R.; Lohmeyer, H.; Sebald, K.; Gutowski, J.; Boettcher, T.; Hommel, D.] Univ Bremen, Inst Solid State Phys, Bremen, Germany.
RP Barabash, RI (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
EM barabashr@ornl.gov
RI Gao, Yanfei/F-9034-2010; Kroeger, Roland/D-5321-2012
OI Gao, Yanfei/0000-0003-2082-857X;
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Materials Sciences and Engineering; U.S. Department of Energy, Office of
Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]; Deutsche
Forschungsgemeinschaft [HE 2827/5-1, HO 1388/25-2]
FX Research at ORNL is supported by the U.S. Department of Energy, Office
of Basic Energy Sciences, Division of Materials Sciences and
Engineering. Data collection with PXM has been carried out on beamline
ID-34-E at the Advanced Photon Source, Argonne IL. Use of the Advanced
Photon Source was supported by the U.S. Department of Energy, Office of
Science, Office of Basic Energy Sciences, under Contract No.
DE-AC02-06CH11357. This work was further supported by the Deutsche
Forschungsgemeinschaft under Contracts No. HE 2827/5-1 and HO 1388/25-2.
NR 28
TC 1
Z9 1
U1 0
U2 16
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD NOV 25
PY 2010
VL 528
IS 1
BP 52
EP 57
DI 10.1016/j.msea.2010.04.045
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 687OQ
UT WOS:000284788200007
ER
PT J
AU Bacciochini, A
Ilavsky, J
Montavon, G
Denoirjean, A
Ben-Ettouil, F
Valette, S
Fauchais, P
Wittmann-Teneze, K
AF Bacciochini, Antoine
Ilavsky, Jan
Montavon, Ghislain
Denoirjean, Alain
Ben-ettouil, Fadhel
Valette, Stephane
Fauchais, Pierre
Wittmann-teneze, Karine
TI Quantification of void network architectures of suspension
plasma-sprayed (SPS) yttria-stabilized zirconia (YSZ) coatings using
Ultra-small-angle X-ray scattering (USAXS)
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE Ultra-small-angle X-ray scattering (USAXS); Ceramic coating; Suspension
plasma spraying; Porous architecture; Thermomechanical properties
ID THERMAL BARRIER COATINGS; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY;
MICROSTRUCTURAL CHARACTERIZATION; HEAT-TRANSFER; GROWN OXIDE;
TECHNOLOGY; POROSITY; CONDUCTIVITY; DIFFUSIVITY
AB Suspension plasma spraying (SPS) is able to process a stabilized suspension of nanometer-sized feedstock particles to form thin (from 20 to 100 mu m) coatings with unique microstructures. The void (pore) network structure of these ceramic coatings is challenging to characterize and quantify using commonly used techniques due to small sizes involved. Nevertheless, the discrimination of these pores in terms of their size and shape distribution, anisotropy, specific surface area, etc., is critical for the understanding of processing, microstructure, and properties relationships. We will show that one of suitable combinations of techniques providing sufficient detail is ultra-small-angle X-ray scattering (USAXS) and helium pycnometry, combined with scanning electron microscopy (SEM).
Yttria-partially stabilized zirconia (YSZ) coatings were manufactured by plasma processing of suspension of particles with average diameter of similar to 50 nm. Several sets of spray parameters (plasma gas mixture, spray distance, electric arc intensity, etc.) were used to generate plasma jets with different mass enthalpies and coefficients of thermal transfer and different heat fluxes transferred to the substrate. Free-standing coatings were studied as-sprayed and annealed at 800 and 1100 degrees C for 10 and 100 h (non-constrained sintering). Results indicate that the SPS coatings exhibit nanosized pore microstructure: average void size was about the same size scale as the feedstock size; i.e., nanometer sizes with multimodal void size distribution. About 80% of the pores (by number) exhibited characteristic dimensions smaller than 30 nm. Total void content of as-sprayed SPS coatings varies between 13% and 20%. Most of the voids were found to be opened with only between one-tenth to one-third of voids volume being inaccessible by intrusion (not connected to either surface). During annealing, even at temperatures as low than 800 degrees C, the microstructure transformed: while the total void content did not change significantly, the void size distribution evolved toward larger sizes.
This unique void system, together with the nanometer scale of the particulate matrix itself, gave these coatings very low apparent thermal conductivity (in the order of 0.1 W m(-1) K-1), as rarefaction effect and phonon scattering mechanisms are very likely emphasized. Published by Elsevier B.V.
C1 [Ilavsky, Jan] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Bacciochini, Antoine; Montavon, Ghislain; Denoirjean, Alain; Ben-ettouil, Fadhel; Valette, Stephane; Fauchais, Pierre] Univ Limoges, Fac Sci & Tech, CNRS, SPCTS,UMR 6638, F-87060 Limoges, France.
[Wittmann-teneze, Karine] Commissariat Energie Atom French Atom Agcy, F-37000 Monts, France.
RP Ilavsky, J (reprint author), Argonne Natl Lab, Adv Photon Source, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM ilavsky@aps.anl.gov; ghislain.montavon@utbm.fr
RI Ilavsky, Jan/D-4521-2013; USAXS, APS/D-4198-2013
OI Ilavsky, Jan/0000-0003-1982-8900;
FU French Ministry and Industry and local governments of Region Centre and
Limousin; SPCTS; U. S. Department of Energy, Office of Science, Office
of Basic Energy Sciences [DE-AC02-06CH11357]
FX This work was partially supported by the French FCE-NANOSURF consortium
(Mecachrome, Frechin, CRT Plasma Laser, Cilas, CEA, CITRA) granted by
the French Ministry and Industry and local governments of Region Centre
and Limousin, the financial support of which is gratefully acknowledged
by authors from SPCTS.; Use of the Advanced Photon Source at Argonne
National Laboratory was supported by the U. S. Department of Energy,
Office of Science, Office of Basic Energy Sciences, under Contract No.
DE-AC02-06CH11357.
NR 57
TC 18
Z9 18
U1 1
U2 26
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD NOV 25
PY 2010
VL 528
IS 1
BP 91
EP 102
DI 10.1016/j.msea.2010.06.082
PG 12
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 687OQ
UT WOS:000284788200013
ER
PT J
AU Balzar, D
Popa, NC
Vogel, S
AF Balzar, D.
Popa, N. C.
Vogel, S.
TI Strain and stress tensors of rolled uranium plate by Rietveld refinement
of TOF neutron-diffraction data
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE Neutron diffraction; Rietveld refinement; Strain; Stress; Uranium
ID ELASTIC-STRAIN; TEXTURE
AB We report the complete macroscopic average strain and stress tensors for a cold-rolled uranium plate, based on the neutron TOF measurements. Both tensors were determined by the least-squares refinement of the interplanar spacings of 19 Bragg reflections. Based on the pole figures, as determined by GSAS, a triclinic sample symmetry of the uranium plate was assumed. Strain and stress are tensile in both the transverse and rolling directions and very small in the normal direction (through the thickness of the plate). Shear strain and stress components are compressive and of significant magnitude. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Balzar, D.] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA.
[Popa, N. C.] Natl Inst Mat Phys, Bucharest, Romania.
[Vogel, S.] Los Alamos Natl Lab, Los Alamos Neutron Scattering Ctr, Los Alamos, NM USA.
RP Balzar, D (reprint author), Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA.
EM balzar@du.edu
RI Popa, Nicolae/B-8182-2011; Lujan Center, LANL/G-4896-2012;
OI Vogel, Sven C./0000-0003-2049-0361
NR 13
TC 4
Z9 4
U1 0
U2 16
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD NOV 25
PY 2010
VL 528
IS 1
BP 122
EP 126
DI 10.1016/j.msea.2010.06.002
PG 5
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 687OQ
UT WOS:000284788200016
ER
PT J
AU Jana, S
Mishra, RS
Baumann, JA
Grant, G
AF Jana, S.
Mishra, R. S.
Baumann, J. A.
Grant, G.
TI Effect of process parameters on abnormal grain growth during friction
stir processing of a cast Al alloy
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE Aluminum alloys; Friction stir processing; Abnormal grain growth;
Microstructure
ID STRENGTH ALUMINUM-ALLOYS; CELLULAR MICROSTRUCTURES; TENSILE PROPERTIES;
UNIFIED THEORY; HEAT-TREATMENT; FEM MODEL; STABILITY; TEXTURE;
RECRYSTALLIZATION; SUPERPLASTICITY
AB The effects of process parameters and friction stir processing (FSP) run configurations on the stability of nugget microstructure at elevated temperatures were evaluated. Cast plates of an Al-7Si-0.6Mg alloy were friction stir processed using a combination of tool rotation rates and tool traverse speeds. All single pass runs showed some extent of abnormal grain growth (AGG), whereas multi-pass runs were more resistant to AGG. Additionally, higher tool rotation rate was found to be beneficial for controlling AGG. These effects were analyzed by comparing the result of this work with other published results and AGG models. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Jana, S.; Mishra, R. S.] Missouri Univ Sci & Technol, Dept Mat Sci & Engn, Rolla, MO 65409 USA.
[Baumann, J. A.] Boeing Co, St Louis, MO 63166 USA.
[Jana, S.; Grant, G.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Mishra, RS (reprint author), Missouri Univ Sci & Technol, Dept Mat Sci & Engn, B37 McNutt Hall,1870 Miner Circle, Rolla, MO 65409 USA.
EM rsmishra@mst.edu
RI Mishra, Rajiv/A-7985-2009
OI Mishra, Rajiv/0000-0002-1699-0614
NR 44
TC 14
Z9 15
U1 1
U2 15
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD NOV 25
PY 2010
VL 528
IS 1
BP 189
EP 199
DI 10.1016/j.msea.2010.08.049
PG 11
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 687OQ
UT WOS:000284788200025
ER
PT J
AU Hsiung, LL
AF Hsiung, Luke L.
TI On the mechanism of anomalous slip in bcc metals
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE Anomalous slip; Jogged screw dislocations; Coplanar dislocation arrays
ID CENTERED-CUBIC METALS; TANTALUM SINGLE-CRYSTALS; PLASTIC-DEFORMATION;
NIOBIUM; ALLOYS
AB The anomalous-slip behavior of bcc metals has been studied by TEM analyses of dislocation substructures developed in a [(2) over bar 920]-oriented Mo single crystal uniaxially compressed at room temperature to a total-strain of 0.4%. It is found that the initial dislocation lines in association with "grown-in" super-jogs can act as effective sources for the formation of both a(0)/2[1 (1) over bar 1] (Schmid factor = 0.5) and a(0)/2[1 (1) over bar 1] (Schmid factor = 0.167) coplanar screw dislocation arrays in the ((1) over bar 0 1) primary slip plane. The interaction between the multiplied a(0)/2[1 1 1] dislocations and pre-existing a(0)/2[1 (1) over bar 1] dislocation segments, which block the motion of the a(0)/2[1 1 1] dislocations, renders the multiplication of a(0)/2[1 (1) over bar 1] dislocations and leads to the formation of a(0)/2[1 1 1] and a(0)/2[1 (1) over bar 1] dislocation arrays on the ((1) over bar 0 1) primary slip plane. The occurrence of {0 (1) over bar 1} anomalous slip is accordingly proposed to be resulting from the mutual trapping of a(0)/2[1 1 1] and a(0)/2[1 (1) over bar1 1] coplanar dislocation arrays on the ((1) over bar 0 1) primary slip plane, which renders a cross-slip propagation of both a(0)/2[1 1 1] and a(0)/2[1 (1) over bar 1] screw dislocations from the ((1) over bar 0 1) plane onto the {0 (1) over bar 1} planes and thus activates the {0 1 (1) over bar 1} < 1 1 1 > slip systems. Published by Elsevier B.V.
C1 Lawrence Livermore Natl Lab, Condensed Matter & Mat Div, Livermore, CA 94551 USA.
RP Hsiung, LL (reprint author), Lawrence Livermore Natl Lab, Condensed Matter & Mat Div, L-352,POB 808, Livermore, CA 94551 USA.
EM hsiungl@llnl.gov
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[AC52-07NA27344]
FX This work was performed under the auspices of the U.S. Department of
Energy by Lawrence Livermore National Laboratory under Contract
DE-AC52-07NA27344. The author would like to express his gratitude to
Mary LeBlanc and Dr. David Lassila for performing crystal purification
and uniaxial compression experiments.
NR 17
TC 14
Z9 15
U1 1
U2 35
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD NOV 25
PY 2010
VL 528
IS 1
BP 329
EP 337
DI 10.1016/j.msea.2010.09.017
PG 9
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 687OQ
UT WOS:000284788200042
ER
PT J
AU Unocic, KA
Pint, BA
AF Unocic, K. A.
Pint, B. A.
TI Characterization of the alumina scale formed on a commercial MCrAlYHfSi
coating
SO SURFACE & COATINGS TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 37th International Conference on Metallurgical Coatings and Thin Films
CY APR 26-30, 2010
CL San Diego, CA
SP Amer Vacuum Soc, Adv Surface Engn Div
DE MCrAlY; Bond coat; Alumina; Segregation; Yttrium; Hafnium
ID THERMAL-BARRIER COATINGS; OXIDATION BEHAVIOR; ELEMENT ADDITIONS; FORMING
ALLOYS; BOND COAT; PERFORMANCE; SUPERALLOYS; DEPOSITION; DIFFUSION;
SYSTEMS
AB A commercial NiCoCrAlYHfSi coating deposited on a Ni-base superalloy substrate was characterized before and after high temperature oxidation. The combination of Y, Hf and Si additions is reported to improve coating performance. Advanced characterization techniques including scanning-transmission electron microscopy were used to study the segregation behavior of Y and Hf ions to the alumina grain boundaries after 200 h at 1050 degrees C and 100 and 200 h exposures at 1100 degrees C. After both exposure times, two distinct oxide layers were observed. The outer transient layer included many Y- and Hf-rich oxide particles. The inner layer consisted of columnar alpha-Al(2)O(3) grains normal to the surface of the coating. Segregation of Y and Hf ions was found on the alumina grain boundaries as has been observed in model alloys with similar compositions. Isothermal exposures for up to 200 h at 1050 degrees and 1100 degrees C caused a minimal increase in surface roughness. However, 200 1-h cycles at 1100 degrees C resulted in a more significant increase in surface roughness. Published by Elsevier B.V.
C1 [Unocic, K. A.; Pint, B. A.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Unocic, KA (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM unocicka@ornl.gov
RI Pint, Bruce/A-8435-2008
OI Pint, Bruce/0000-0002-9165-3335
NR 21
TC 18
Z9 19
U1 1
U2 21
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0257-8972
J9 SURF COAT TECH
JI Surf. Coat. Technol.
PD NOV 25
PY 2010
VL 205
IS 5
BP 1178
EP 1182
DI 10.1016/j.surfcoat.2010.08.111
PG 5
WC Materials Science, Coatings & Films; Physics, Applied
SC Materials Science; Physics
GA 697BN
UT WOS:000285487700002
ER
PT J
AU Dryepondt, S
Pint, BA
AF Dryepondt, Sebastien
Pint, Bruce A.
TI Determination of the ductile to brittle temperature transition of
aluminide coatings and its influence on the mechanical behavior of
coated specimens
SO SURFACE & COATINGS TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 37th International Conference on Metallurgical Coatings and Thin Films
CY APR 26-30, 2010
CL San Diego, CA
SP Amer Vacuum Soc, Adv Surface Engn Div
DE Aluminide coating; DBTT; Hardness; Creep
ID RENE 80; CREEP; DEPOSITION; FATIGUE
AB The ductility of various coatings deposited by chemical vapor deposition, pack cementation and slurry processes on Fe- and Ni-based alloys was characterized by indentation at room temperature. A hot indentation apparatus has also been developed to more rapidly determine the ductile to brittle transition temperature of coated specimens. Creep testing has been conducted on bare and coated alloy 230 (NiCrW) specimens at 800 degrees C with a significant decrease in creep life observed. Based on the observed failure of coated 230 specimens, the impact of coating ductility on substrate creep properties is discussed. Published by Elsevier B.V.
C1 [Dryepondt, Sebastien; Pint, Bruce A.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Dryepondt, S (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM dryepondtsn@ornl.gov; pintba@ornl.gov
RI Pint, Bruce/A-8435-2008
OI Pint, Bruce/0000-0002-9165-3335
NR 13
TC 4
Z9 4
U1 0
U2 8
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0257-8972
J9 SURF COAT TECH
JI Surf. Coat. Technol.
PD NOV 25
PY 2010
VL 205
IS 5
BP 1195
EP 1199
DI 10.1016/j.surfcoat.2010.08.081
PG 5
WC Materials Science, Coatings & Films; Physics, Applied
SC Materials Science; Physics
GA 697BN
UT WOS:000285487700005
ER
PT J
AU Pint, BA
Haynes, JA
Zhang, Y
AF Pint, B. A.
Haynes, J. A.
Zhang, Y.
TI Effect of superalloy substrate and bond coating on TBC lifetime
SO SURFACE & COATINGS TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 37th International Conference on Metallurgical Coatings and Thin Films
CY APR 26-30, 2010
CL San Diego, CA
SP Amer Vacuum Soc, Adv Surface Engn Div
DE TBC lifetime; Pt diffusion coating; Pt aluminide coating; Scale
adhesion; Oxidation
ID THERMAL BARRIER COATINGS; SINGLE-CRYSTAL SUPERALLOYS; GAMMA' NIPTAL
COATINGS; NI-BASED SUPERALLOYS; OXIDATION BEHAVIOR; ALUMINIDE COATINGS;
WATER-VAPOR; PLATINUM; SYSTEMS; PERFORMANCE
AB Several different single-crystal superalloys were coated with different bond coatings to study the effect of composition on the cyclic oxidation lifetime of an yttria-stabilized zirconia (YSZ) top coating deposited by electron beam physical vapor deposition from a commercial source. Three different superalloys were coated with a 7 mu m Pt layer that was diffused into the surface prior to YSZ deposition. One of the superalloys, N5, was coated with a low activity, Pt-modified aluminide coating and Pt-diffusion coatings with 3 and 7 mu m of Pt. Three coatings of each type were furnace cycled to failure in 1 h cycles at 1150 degrees C to assess average coating lifetime. The 7 mu m Pt diffusion coating on N5 had an average YSZ coating lifetime >50% higher than a Pt-modified aluminide coating on N5. Without a YSZ coating, the Pt-modified aluminide coating on N5 showed the typical surface deformation during cycling, however, the deformation was greatly reduced when constrained by the YSZ coating. The 3 mu m Pt diffusion coating had a similar average lifetime as the Pt-modified aluminide coating but a much wider scatter. The Pt diffusion bond coating on superalloy X4 containing Ti exhibited the shortest YSZ coating lifetime, this alloy-coating combination also showed the worst alumina scale adhesion without a YSZ coating. The third generation superalloy N6 exhibited the longest coating lifetime with a 7 mu m Pt diffusion coating. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Pint, B. A.; Haynes, J. A.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Zhang, Y.] Tennessee Technol Univ, Cookeville, TN 38505 USA.
RP Pint, BA (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM pintba@ornl.gov
RI Pint, Bruce/A-8435-2008
OI Pint, Bruce/0000-0002-9165-3335
NR 28
TC 22
Z9 22
U1 3
U2 22
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0257-8972
J9 SURF COAT TECH
JI Surf. Coat. Technol.
PD NOV 25
PY 2010
VL 205
IS 5
BP 1236
EP 1240
DI 10.1016/j.surfcoat.2010.08.154
PG 5
WC Materials Science, Coatings & Films; Physics, Applied
SC Materials Science; Physics
GA 697BN
UT WOS:000285487700012
ER
PT J
AU Kartal, G
Timur, S
Eryilmaz, OL
Erdemir, A
AF Kartal, G.
Timur, S.
Eryilmaz, O. L.
Erdemir, A.
TI Influence of process duration on structure and chemistry of borided low
carbon steel
SO SURFACE & COATINGS TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 37th International Conference on Metallurgical Coatings and Thin Films
CY APR 26-30, 2010
CL San Diego, CA
SP Amer Vacuum Soc, Adv Surface Engn Div
DE Boriding; Electrolysis time; Molten salts; Surface treatment
ID MOLTEN-SALTS; SURFACE MODIFICATION; RESIDUAL-STRESSES; MECHANISM; WEAR
AB In this study, we employed an ultra-fast bonding technique to grow hard boride layers on low carbon steel substrates using an induction furnace at 900 degrees C. The technique utilizes an electrochemical cell in which it is possible to achieve very thick (i.e., about 90 mu m thick) boride layers in about 30 min. The effects of process duration on boride layer thickness, composition, and structural morphology were investigated using microscopic and X-ray diffraction (XRD) methods. We also developed an empirical equation for the growth rate of boride layers. XRD results revealed two principal boride phases: FeB and Fe(2)B thickness of which was very dependent on the process duration. For example, Fe(2)B phase was more dominant during shorter bonding times (i.e., up to 15 min.) but FeB became much more pronounced at much longer durations. The growth rate of total boride layer was nearly linear up to 30 min of treatment. However during much longer process duration, the growth rate assumed a somewhat parabolic character that could be expressed as d=1.4904 (t)(0.5) + 11.712). where d (in mu m) is the growth rate, t (in s) is duration. The mechanical characterization of the bonded surfaces in plane and in cross-sections has confirmed hardness values as high 19 GPa at or near the bonded surface (where FeB phase is present). However, the hardness gradually decreased to 14 to 16 GPa levels in the region where Fe2B phase was found. Published by Elsevier B.V.
C1 [Eryilmaz, O. L.; Erdemir, A.] Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA.
[Kartal, G.; Timur, S.] Istanbul Tech Univ, Dept Met & Mat Engn, Maslak, Turkey.
RP Erdemir, A (reprint author), Argonne Natl Lab, Div Energy Technol, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM erdemir@anl.gov
RI Timur, Servet/J-2893-2012
NR 34
TC 10
Z9 10
U1 0
U2 7
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0257-8972
J9 SURF COAT TECH
JI Surf. Coat. Technol.
PD NOV 25
PY 2010
VL 205
IS 5
BP 1578
EP 1583
DI 10.1016/j.surfcoat.2010.08.050
PG 6
WC Materials Science, Coatings & Films; Physics, Applied
SC Materials Science; Physics
GA 697BN
UT WOS:000285487700070
ER
PT J
AU Reichhardt, CJO
Reichhardt, C
AF Reichhardt, C. J. Olson
Reichhardt, C.
TI Fluctuations, jamming, and yielding for a driven probe particle in
disordered disk assemblies
SO PHYSICAL REVIEW E
LA English
DT Article
ID TRANSITION; DYNAMICS; FLOW
AB Using numerical simulations we examine the velocity fluctuations and velocity-force curve characteristics of a probe particle driven with constant force through a two-dimensional disordered assembly of disks which has a well-defined jamming point J at a density of phi(J) = 0.843. As phi increases toward phi(J), the average velocity of the probe particle decreases and the velocity fluctuations show an increasingly intermittent or avalanchelike behavior. When phi is within a few percent of the jamming density, the velocity distributions are exponential, while when phi is less than 1% away from jamming, the velocity distributions have a power-law character with exponents in agreement with recent experiments. The velocity power spectra exhibit a crossover from a Lorentzian form to a 1/f shape near jamming. We extract a correlation length exponent nu which is in good agreement with recent shear simulations. For phi > phi(J), there is a critical threshold force F-c that must be applied for the probe particle to move through the sample which increases with increasing phi. The velocity-force curves are linear below jamming, while at jamming they have a power-law form. The onset of the probe motion above phi(J) occurs via a local yielding of the particles around the probe particle which we term a local shear banding effect.
C1 [Reichhardt, C. J. Olson; Reichhardt, C.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Reichhardt, CJO (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
OI Reichhardt, Cynthia/0000-0002-3487-5089
FU NNSA of the U.S. DOE at LANL [DE-AC52-06NA25396]
FX We thank M. Hastings, L. Silbert, and S. Teitel for useful comments.
This work was carried out under the auspices of the NNSA of the U.S. DOE
at LANL under Contract No. DE-AC52-06NA25396.
NR 36
TC 18
Z9 19
U1 0
U2 10
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
J9 PHYS REV E
JI Phys. Rev. E
PD NOV 24
PY 2010
VL 82
IS 5
AR 051306
DI 10.1103/PhysRevE.82.051306
PN 1
PG 11
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 713JU
UT WOS:000286735100002
ER
PT J
AU Yanez, R
Loveland, W
Vinodkumar, AM
Sprunger, PH
Prisbrey, L
Peterson, D
Zhu, S
Kolata, JJ
Villano, A
Liang, JF
AF Yanez, R.
Loveland, W.
Vinodkumar, A. M.
Sprunger, P. H.
Prisbrey, L.
Peterson, D.
Zhu, S.
Kolata, J. J.
Villano, A.
Liang, J. F.
TI Isospin dependence of capture cross sections: The S-36+Pb-208 reaction
SO PHYSICAL REVIEW C
LA English
DT Article
ID FUSION EXCITATION-FUNCTIONS; BARRIER DISTRIBUTIONS; ENHANCEMENT; FISSION
AB The capture-fission cross section for the S-36+Pb-208 reaction was measured for seven center-of-mass energies ranging from 147.5 to 210.2 MeV. A comparison of the deduced interaction barriers from "distribution of barriers" measurements and simple 1/E-c.m. plots for 13 well-characterized systems shows the validity of the latter approach for deducing interaction barriers, especially for reaction systems involving radioactive beams where the former measurements are not currently feasible. Application of the 1/E-c.m. plot technique for the S-36+Pb-208 reaction gives an interaction barrier height of 140.4 +/- 1.4 MeV. This value as well as the deduced interaction barriers for all known studies of capture cross sections with radioactive beams are in good agreement with recent predictions of an improved isospin-dependent quantum molecular dynamics model and a modified version of capture cross-section systematics by Swiatecki et al. The deduced barriers for these n-rich systems are lower than one would expect from semiempirical systematics based upon the Bass potential. In addition to the barrier lowering, there is an enhanced subbarrier cross section in these n-rich systems not predicted by the Bass potential systematics. These enhanced subbarrier cross sections may be important in the synthesis of the heaviest nuclei.
C1 [Yanez, R.; Loveland, W.; Vinodkumar, A. M.; Sprunger, P. H.; Prisbrey, L.] Oregon State Univ, Dept Chem, Corvallis, OR 97331 USA.
[Peterson, D.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Kolata, J. J.; Villano, A.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
[Liang, J. F.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
RP Yanez, R (reprint author), Oregon State Univ, Dept Chem, Gilbert Hall 153, Corvallis, OR 97331 USA.
RI Attukalathil, Vinodkumar/A-7441-2009
OI Attukalathil, Vinodkumar/0000-0002-8204-7800
FU Office of High Energy and Nuclear Physics, Nuclear Physics Division, US
Department of Energy [DE-FG06-97ER41026, DE-AC02-06CH11357]; US National
Science Foundation [PHY06-52591]
FX We thank John Greene for providing the targets used in this experiment.
We thank B. Shumard for technical assistance during this experiment. We
thank K. Siwek-Wilczynska and Bao-An Bian for allowing us to use their
model predictions prior to publication. We thank R. Pardo and the ATLAS
accelerator staff for providing us with high-quality beams during the
experiment. This work was supported, in part, by the Office of High
Energy and Nuclear Physics, Nuclear Physics Division, US Department of
Energy, under Grant No. DE-FG06-97ER41026, Contract No.
DE-AC02-06CH11357, and the US National Science Foundation under Grant
No. PHY06-52591.
NR 26
TC 5
Z9 5
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD NOV 24
PY 2010
VL 82
IS 5
AR 054615
DI 10.1103/PhysRevC.82.054615
PG 8
WC Physics, Nuclear
SC Physics
GA 713JD
UT WOS:000286733400001
ER
PT J
AU Li, XP
Lu, WC
Wang, CZ
Ho, KM
AF Li, Xiao-Ping
Lu, Wen-Cai
Wang, C. Z.
Ho, K. M.
TI Structures of Pb-n (n=21-30) clusters from first-principles calculations
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID LEAD CLUSTERS; CARBON CLUSTERS; SPECTROSCOPIC PROPERTIES; TIN; ENERGY;
IONS; SIZE; STABILITIES; POTENTIALS; TRANSITION
AB Neutral lead clusters Pb-n (n = 21-30) were studied using a genetic algorithm (GA)/tight-binding (TB) search combined with density functional theory (DFT)-Perdew-Burke-Ernzerhof (PBE) calculations. The calculated results show that the Pb-n (22 <= n <= 30) clusters favor endohedral cage structures with two (Pb22-26) or three (Pb27-30) endohedral atoms. The binding energies, stabilities, and highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO-LUMO) gaps of the Pb-n clusters were also discussed. The results from our calculations also indicate that Pb-24 and Pb-28 are especially stable clusters compared with their neighbors.
C1 [Li, Xiao-Ping; Lu, Wen-Cai] Jilin Univ, Inst Theoret Chem, State Key Lab Theoret & Computat Chem, Changchun 130021, Jilin, Peoples R China.
[Lu, Wen-Cai] Qingdao Univ, Coll Phys, Growing Base State Key Lab, Qingdao 266071, Shandong, Peoples R China.
[Lu, Wen-Cai] Qingdao Univ, Lab Fiber Mat & Modern Text, Growing Base State Key Lab, Qingdao 266071, Shandong, Peoples R China.
[Wang, C. Z.; Ho, K. M.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Wang, C. Z.; Ho, K. M.] US DOE, Ames Lab, Ames, IA 50011 USA.
RP Lu, WC (reprint author), Jilin Univ, Inst Theoret Chem, State Key Lab Theoret & Computat Chem, Changchun 130021, Jilin, Peoples R China.
EM wencailu@jlu.edu.cn
OI Wang, Chong/0000-0003-4489-4344
FU National Natural Science Foundation of China [20773047, 21043001]; Iowa
State University [DE-AC02-07CH11358]; Office of Basic Energy Sciences,
National Energy Research Supercomputing Center (NERSC) in Berkeley
FX This work was supported by the National Natural Science Foundation of
China (Grant Nos 20773047 and 21043001). Ames Laboratory is operated for
the US Department of Energy by Iowa State University under Contract No.
DE-AC02-07CH11358. This work was also supported by the Director for
Energy Research, Office of Basic Energy Sciences, including a grant of
computer time at the National Energy Research Supercomputing Center
(NERSC) in Berkeley.
NR 44
TC 6
Z9 6
U1 0
U2 12
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD NOV 24
PY 2010
VL 22
IS 46
AR 465501
DI 10.1088/0953-8984/22/46/465501
PG 6
WC Physics, Condensed Matter
SC Physics
GA 675OA
UT WOS:000283838800011
PM 21403370
ER
PT J
AU Treat, ND
Campos, LM
Dimitriou, MD
Ma, BW
Chabinyc, ML
Hawker, CJ
AF Treat, Neil D.
Campos, Luis M.
Dimitriou, Michael D.
Ma, Biwu
Chabinyc, Michael L.
Hawker, Craig J.
TI Nanostructured Hybrid Solar Cells: Dependence of the Open Circuit
Voltage on the Interfacial Composition
SO ADVANCED MATERIALS
LA English
DT Article
ID PHOTOVOLTAIC DEVICES; POLYMER; EFFICIENCY; TITANIA; LAYER
AB Nanostructured amorphous titanium suboxide electrodes are fabricated to determine the effects of the electrode geometry on the device performance of poly(3-hexylthiophene): (6,6)-phenyl C61 butyric acid methyl ester inverted solar cells. It is found that a combination of electrode geometry and active layer processing influences the open circuit voltage in these devices.
C1 [Treat, Neil D.; Campos, Luis M.; Dimitriou, Michael D.; Chabinyc, Michael L.; Hawker, Craig J.] Univ Calif Santa Barbara, Mat Res Lab, Dept Mat, Mitsubishi Chem Ctr Adv Mat, Santa Barbara, CA 93106 USA.
[Ma, Biwu] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA.
RP Chabinyc, ML (reprint author), Univ Calif Santa Barbara, Mat Res Lab, Dept Mat, Mitsubishi Chem Ctr Adv Mat, Santa Barbara, CA 93106 USA.
EM mchabinyc@engineering.ucsb.edu; hawker@mrl.ucsb.edu
RI Chabinyc, Michael/E-2387-2011; Hawker, Craig/G-4971-2011; Ma,
Biwu/B-6943-2012; Campos, Luis/B-4757-2010; Treat, Neil/A-8999-2010
OI Hawker, Craig/0000-0001-9951-851X;
FU UCSB Materials Research Laboratory (NSF) [DMR05-20415]; Office of
Science, Offi ce of Basic Energy Sciences, of the U.S. Department of
Energy [DE-AC02 - 05CH11231]; ConvEne IGERT [NSF-DGE 0801627]; NSF;
University of California
FX The use of the central facilities of the UCSB Materials Research
Laboratory (NSF Grant DMR05-20415) is gratefully acknowledged. Portions
of this work were performed as a user project at the Molecular Foundry,
at Lawrence Berkeley National Laboratory, which is supported by the
Office of Science, Offi ce of Basic Energy Sciences, of the U.S.
Department of Energy under Contract No. DE-AC02 - 05CH11231. NDT
acknowledges support from the ConvEne IGERT Program (NSF-DGE 0801627)
and NSF Graduate Research Fellowship Program. LMC thanks the University
of California for support with a President's Fellowship.
NR 28
TC 17
Z9 17
U1 1
U2 19
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 0935-9648
J9 ADV MATER
JI Adv. Mater.
PD NOV 24
PY 2010
VL 22
IS 44
BP 4982
EP +
DI 10.1002/adma.201001967
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 695SY
UT WOS:000285394100010
PM 20827684
ER
PT J
AU Burckel, DB
Wendt, JR
Ten Eyck, GA
Ginn, JC
Ellis, AR
Brener, I
Sinclair, MB
AF Burckel, D. Bruce
Wendt, Joel R.
Ten Eyck, Gregory A.
Ginn, James C.
Ellis, A. Robert
Brener, Igal
Sinclair, Michael B.
TI Micrometer-Scale Cubic Unit Cell 3D Metamaterial Layers
SO ADVANCED MATERIALS
LA English
DT Article
ID OPTICAL FREQUENCIES; NEGATIVE-INDEX; PHOTONIC METAMATERIAL; RESONATORS;
REFRACTION; LENS
AB Membrane projection lithography is used to create vertically oriented splitring resonators which show measured electric and magnetic resonances (lambda = 22, 11, and 7 mu m). We then create composite structures with 5 split ring resonators per unit cell (image). This approach provides a long-sought, manufacturable path toward the realization of 3D optical and infrared metamaterials.
C1 [Burckel, D. Bruce; Ginn, James C.; Brener, Igal] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA.
RP Burckel, DB (reprint author), Sandia Natl Labs, Ctr Integrated Nanotechnol, POB 5800, Albuquerque, NM 87185 USA.
EM dbburck@sandia.gov
RI Brener, Igal/G-1070-2010
OI Brener, Igal/0000-0002-2139-5182
FU United States Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX The authors would like to acknowledge Bonnie McKenzie for providing SEM
images. This work was performed, in part, at the Center for Integrated
Nanotechnologies, a U.S. Department of Energy, Office of Basic Energy
Sciences user facility. Supported by the Laboratory Directed Research
and Development program at Sandia National Laboratories. Sandia is a
multiprogram laboratory operated by Sandia Corporation, a Lockheed
Martin Company, for the United States Department of Energy's National
Nuclear Security Administration under Contract DE-AC04-94AL85000.
NR 22
TC 51
Z9 51
U1 2
U2 37
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA POSTFACH 101161, 69451 WEINHEIM, GERMANY
SN 0935-9648
EI 1521-4095
J9 ADV MATER
JI Adv. Mater.
PD NOV 24
PY 2010
VL 22
IS 44
BP 5053
EP +
DI 10.1002/adma.201002429
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 695SY
UT WOS:000285394100024
PM 20941794
ER
PT J
AU Martin, J
Bruno, VM
Fang, ZD
Meng, XD
Blow, M
Zhang, T
Sherlock, G
Snyder, M
Wang, Z
AF Martin, Jeffrey
Bruno, Vincent M.
Fang, Zhide
Meng, Xiandong
Blow, Matthew
Zhang, Tao
Sherlock, Gavin
Snyder, Michael
Wang, Zhong
TI Rnnotator: an automated de novo transcriptome assembly pipeline from
stranded RNA-Seq reads
SO BMC GENOMICS
LA English
DT Article
ID ALIGNMENT; REVEALS; TOOL
AB Background: Comprehensive annotation and quantification of transcriptomes are outstanding problems in functional genomics. While high throughput mRNA sequencing (RNA-Seq) has emerged as a powerful tool for addressing these problems, its success is dependent upon the availability and quality of reference genome sequences, thus limiting the organisms to which it can be applied.
Results: Here, we describe Rnnotator, an automated software pipeline that generates transcript models by de novo assembly of RNA-Seq data without the need for a reference genome. We have applied the Rnnotator assembly pipeline to two yeast transcriptomes and compared the results to the reference gene catalogs of these organisms. The contigs produced by Rnnotator are highly accurate (95%) and reconstruct full-length genes for the majority of the existing gene models (54.3%). Furthermore, our analyses revealed many novel transcribed regions that are absent from well annotated genomes, suggesting Rnnotator serves as a complementary approach to analysis based on a reference genome for comprehensive transcriptomics.
Conclusions: These results demonstrate that the Rnnotator pipeline is able to reconstruct full-length transcripts in the absence of a complete reference genome.
C1 [Martin, Jeffrey; Meng, Xiandong; Blow, Matthew; Zhang, Tao; Wang, Zhong] Univ Calif Berkeley, Lawrence Berkeley Lab, Genom Div, Berkeley, CA 94720 USA.
[Martin, Jeffrey; Meng, Xiandong; Blow, Matthew; Zhang, Tao; Wang, Zhong] Joint Genome Inst, Dept Energy, Walnut Creek, CA USA.
[Bruno, Vincent M.] Yale Univ, Dept Mol Cellular & Dev Biol, New Haven, CT 06520 USA.
[Fang, Zhide] LSU, Hlth Sci Ctr, Sch Publ Hlth, New Orleans, LA 70112 USA.
[Sherlock, Gavin; Snyder, Michael] Stanford Univ, Sch Med, Dept Genet, Stanford, CA 94305 USA.
RP Wang, Z (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Genom Div, Berkeley, CA 94720 USA.
EM zhongwang@lbl.gov
RI Wang, Zhong/E-7897-2011; Sherlock, Gavin/E-9110-2012; Blow,
Matthew/G-6369-2012;
OI Blow, Matthew/0000-0002-8844-9149; Sherlock, Gavin/0000-0002-1692-4983
FU Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231];
NIAID at the NIH [R01AI077737]
FX The work conducted by the U.S. Department of Energy Joint Genome
Institute is supported by the Office of Science of the U.S. Department
of Energy under Contract No. DE-AC02-05CH11231. Gavin Sherlock is
supported by R01AI077737 from the NIAID at the NIH.
NR 17
TC 90
Z9 96
U1 2
U2 19
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1471-2164
J9 BMC GENOMICS
JI BMC Genomics
PD NOV 24
PY 2010
VL 11
AR 663
DI 10.1186/1471-2164-11-663
PG 8
WC Biotechnology & Applied Microbiology; Genetics & Heredity
SC Biotechnology & Applied Microbiology; Genetics & Heredity
GA 694MT
UT WOS:000285303000001
PM 21106091
ER
PT J
AU Leri, AC
Hakala, JA
Marcus, MA
Lanzirotti, A
Reddy, CM
Myneni, SCB
AF Leri, Alessandra C.
Hakala, J. Alexandra
Marcus, Matthew A.
Lanzirotti, Antonio
Reddy, Christopher M.
Myneni, Satish C. B.
TI Natural organobromine in marine sediments: New evidence of
biogeochemical Br cycling
SO GLOBAL BIOGEOCHEMICAL CYCLES
LA English
DT Article
ID RAY-ABSORPTION SPECTROSCOPY; BROMINATED FLAME RETARDANTS; ORGANIC-CARBON
RATIOS; MEDITERRANEAN SEDIMENTS; CONSTRUCTED WETLANDS; PEAT BOGS;
MATTER; ORGANOHALOGENS; HALOGEN; WATER
AB Organobromine (Br(org)) compounds, commonly recognized as persistent, toxic anthropogenic pollutants, are also produced naturally in terrestrial and marine systems. Several enzymatic and abiotic bromination mechanisms have been identified, as well as an array of natural Brorg molecules associated with various marine organisms. The fate of the carbon-bromine functionality in the marine environment, however, remains largely unexplored. Oceanographic studies have noted an association between bromine (Br) and organic carbon (C(org)) in marine sediments. Even so, there has been no direct chemical evidence that Br in the sediments exists in a stable form apart from inorganic bromide (Br(inorg)), which is widely presumed conservative in marine systems. To investigate the scope of natural Brorg production and its fate in the environment, we probed Br distribution and speciation in estuarine and marine sediments using in situ X-ray spectroscopy and spectromicroscopy. We show that Br(org) is ubiquitous throughout diverse sedimentary environments, occurring in correlation with C(org) and metals such as Fe, Ca, and Zn. Analysis of sinking particulate carbon from the seawater column links the Brorg observed in sediments to biologically produced Br(org) compounds that persist through humification of natural organic matter (NOM). Br speciation varies with sediment depth, revealing biogeochemical cycling of Br between organic and inorganic forms as part of the burial and degradation of NOM. These findings illuminate the chemistry behind the association of Br with C(org) in marine sediments and cast doubt on the paradigmatic classification of Br as a conservative element in seawater systems.
C1 [Leri, Alessandra C.; Myneni, Satish C. B.] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA.
[Hakala, J. Alexandra; Myneni, Satish C. B.] Princeton Univ, Dept Geosci, Princeton, NJ 08544 USA.
[Marcus, Matthew A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Lanzirotti, Antonio] Univ Chicago, Consortium Adv Radiat Sources, Chicago, IL 60637 USA.
[Reddy, Christopher M.] Woods Hole Oceanog Inst, Dept Marine Chem & Geochem, Woods Hole, MA 02543 USA.
[Myneni, Satish C. B.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Leri, AC (reprint author), Marymount Manhattan Coll, Dept Nat Sci & Math, 221 E 71st St, New York, NY 10021 USA.
EM aleri@mmm.edu
FU U.S. Department of Energy, Office of Basic Energy Sciences (DOE-BES)
Chemical and Geosciences [DE-AC02-98CH10886]; National Science
Foundation (NSF) Chemical Sciences; NSF; DOE-BES Materials Sciences
Division [DE-AC03-76SF00098]; DOE-Geosciences [DE-FG02-92ER14244]; DOE
Office of Biological and Environmental Research, Environmental
Remediation Sciences Division [DE-FC09-96-SR18546]
FX The authors are indebted to M. Hay, J. Majzlan, D. Sigman, B. Ward, S.
Manganini, R. Robinson, D. Graham, C. Lee, C. Nelson, W. Rao, and the
SSRL staff scientists. This investigation was funded by the U.S.
Department of Energy, Office of Basic Energy Sciences (DOE-BES) Chemical
and Geosciences Programs, the National Science Foundation (NSF) Chemical
Sciences Program, and an NSF Graduate Research Fellowship (ACL). Use of
the ALS was supported by the DOE-BES Materials Sciences Division under
contract DE-AC03-76SF00098. Use of the SSRL, a national user facility
operated by Stanford University, was supported by the DOE-BES. Use of
the NSLS was supported by the DOE-BES under contract DE-AC02-98CH10886.
Portions of this work were performed at beamline X26A at the NSLS.
Beamline X26A is supported by the DOE-Geosciences (DE-FG02-92ER14244 to
the University of Chicago-CARS) and DOE Office of Biological and
Environmental Research, Environmental Remediation Sciences Division
(DE-FC09-96-SR18546 to the University of Georgia). The authors are
grateful for the constructive suggestions provided by two anonymous
reviewers.
NR 52
TC 15
Z9 15
U1 0
U2 45
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0886-6236
J9 GLOBAL BIOGEOCHEM CY
JI Glob. Biogeochem. Cycle
PD NOV 24
PY 2010
VL 24
AR GB4017
DI 10.1029/2010GB003794
PG 15
WC Environmental Sciences; Geosciences, Multidisciplinary; Meteorology &
Atmospheric Sciences
SC Environmental Sciences & Ecology; Geology; Meteorology & Atmospheric
Sciences
GA 686NS
UT WOS:000284703600001
ER
PT J
AU Chen, LJ
Thorne, RM
Jordanova, VK
Horne, RB
AF Chen, Lunjin
Thorne, Richard M.
Jordanova, Vania K.
Horne, Richard B.
TI Global simulation of magnetosonic wave instability in the storm time
magnetosphere
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID EQUATORIAL NOISE; PROTON; MODEL; PLASMASPHERE; PROPAGATION; CLUSTER;
IONS
AB Coupling between the Rice Convection Model and Ring Current-Atmospheric Interactions Model codes is used to simulate the dynamical evolution of ring current ion phase space density and the thermal electron density distribution for the 22 April 2001 storm. The simulation demonstrates that proton ring distributions (df(perpendicular to)/dv(perpendicular to) > 0) develop over a broad spatial region during the storm main phase, leading to the instability of equatorial magnetosonic waves. Calculations of the convective growth rate of magnetosonic waves for multiples of the proton gyrofrequency from 2 to 42 are performed globally. We find that the ratio between the perpendicular ring velocity and the equatorial Alfven speed determines the frequency range of unstable magnetosonic waves. Low harmonic waves (omega < 10 Omega(H+)) tend to be excited in the high-density nightside plasmasphere and within the duskside plume, whereas higher-frequency waves (omega > 20 Omega(H+)) are excited over a broad spatial region of low density outside the morningside plasmasphere.
C1 [Chen, Lunjin; Thorne, Richard M.] Univ Calif Los Angeles, Dept Atmospher Sci, Los Angeles, CA 90095 USA.
[Horne, Richard B.] British Antarctic Survey, Nat Environm Res Council, Cambridge CB3 0ET, England.
[Jordanova, Vania K.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Chen, LJ (reprint author), Univ Calif Los Angeles, Dept Atmospher Sci, 405 Hilgard Ave,Box 951565,7127 Math Sci Bldg, Los Angeles, CA 90095 USA.
EM clj@atmos.ucla.edu
RI Chen, Lunjin/L-1250-2013;
OI Chen, Lunjin/0000-0003-2489-3571; Horne, Richard/0000-0002-0412-6407;
Jordanova, Vania/0000-0003-0475-8743
FU NASA [NNX08AQ88G, NNH08AJ01I, NNX08A135G]
FX The research was supported by NASA grants NNX08AQ88G, NNH08AJ01I, and
NNX08A135G. The authors wish to thank Michelle Thomsen of Los Alamos
National Laboratory for many helpful discussions in the course of this
study and thank Chih-Ping Wang and Matina Gkioulidou for running RCM
simulation for the simulated storm.
NR 30
TC 56
Z9 56
U1 0
U2 1
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0148-0227
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD NOV 24
PY 2010
VL 115
AR A11222
DI 10.1029/2010JA015707
PG 11
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 686PS
UT WOS:000284708800005
ER
PT J
AU Damiano, PA
Brambles, OJ
Lotko, W
Zhang, B
Wiltberger, M
Lyon, J
AF Damiano, P. A.
Brambles, O. J.
Lotko, W.
Zhang, B.
Wiltberger, M.
Lyon, J.
TI Effects of solar wind dynamic pressure on the ionospheric O+ fluence
during the 31 August 2005 storm
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID ION OUTFLOW; POLAR-CAP; MAGNETOSPHERE; REGION; DEPENDENCE; SIMULATION;
UPFLOWS; ENERGY; CUSP; IMF
AB The Multifluid-Lyon-Fedder-Mobarry (MFLFM) global simulation model incorporating an ionospheric cusp O+ outflow model based on an empirical relation between downward DC Poynting flux and O+ outflow flux regulated by the precipitating electron number flux (F-en) is used to simulate the 31 August 2005 storm. A baseline run incorporating the original solar wind data is contrasted against a case where the solar wind dynamic pressure (P-dyn) is artificially adjusted to see what effects this variable has on the O+ fluence generated in the model. Consistent with data, it is found that both the fluence and O+ outflow flux have a positive correlation with the solar wind dynamic pressure. Additionally, changes in P-dyn affect the downward Poynting flux only marginally and regulates both outflow flux and cusp outflow area via F-en. Increases in P-dyn lead to increased cusp electron precipitation, which has the physical effect of enhancing the upwelling O+ population available for outflow.
C1 [Damiano, P. A.; Brambles, O. J.; Lotko, W.; Zhang, B.] Dartmouth Coll, Thayer Sch Engn, Hanover, NH 03755 USA.
[Lyon, J.] Dartmouth Coll, Dept Phys & Astron, Hanover, NH 03755 USA.
[Wiltberger, M.] Natl Ctr Atmospher Res, High Altitude Observ, Boulder, CO 80301 USA.
RP Damiano, PA (reprint author), Princeton Univ, Princeton Plasma Phys Lab, MS29,C Site, Princeton, NJ 08543 USA.
EM pdamiano@pppl.gov
RI Wiltberger, Michael/B-8781-2008
OI Wiltberger, Michael/0000-0002-4844-3148
FU NASA [NNX08AI36G, NNX07AQ16G]; National Science Foundation
[ATM-0120950]; National Center for Atmospheric Research [36761008]
FX The research was supported by the NASA Sun-Earth Connection Theory
Program (grant NNX08AI36G), the NASA Living With a Star Targeted
Research and Technology Program (grant NNX07AQ16G), and the Center for
Integrated Space Weather Modeling funded by the National Science
Foundation STC program under cooperative agreement ATM-0120950.
Computing resources for the research were provided by the National
Center for Atmospheric Research under CISL project 36761008.
NR 28
TC 11
Z9 11
U1 0
U2 6
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0148-0227
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD NOV 24
PY 2010
VL 115
AR A00J07
DI 10.1029/2010JA015583
PG 7
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 686PS
UT WOS:000284708800002
ER
PT J
AU Lee, B
Rudd, RE
Klepeis, JE
AF Lee, Byeongchan
Rudd, Robert E.
Klepeis, John E.
TI Using alloying to promote the subtle rhombohedral phase transition in
vanadium
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID AUGMENTED-WAVE METHOD; HIGH-PRESSURE; INTRINSIC DIFFUSION;
LATTICE-DYNAMICS; TITANIUM ALLOYS; OXYGEN
AB Recently it has been suggested theoretically and discovered experimentally that pressure can induce body-centered cubic vanadium to transition to a rhombohedral phase. Here we show using density functional theory calculations that alloying can affect the same transition, and in particular alloying can increase the stability of the rhombohedral phase, reducing the pressure needed to induce the transition. These calculations are full supercell calculations, as opposed to the virtual crystal approximation and other approximate schemes that neglect atomic relaxation and local bonding effects. These results suggest a way in which alloying provides a means of designing this class of exotic phases to be more robust.
C1 [Lee, Byeongchan] Kyung Hee Univ, Yongin 446701, Gyeonggi, South Korea.
[Rudd, Robert E.; Klepeis, John E.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Lee, B (reprint author), Kyung Hee Univ, 1 Seochon Giheung, Yongin 446701, Gyeonggi, South Korea.
EM airbc@khu.ac.kr
OI Rudd, Robert/0000-0002-6632-2681
FU US Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; Ministry of Education, Science and Technology
[2010-0025566]
FX We are grateful to Livermore Computing for allocations on Zeus. RER's
and JEK's work was performed under the auspices of the US Department of
Energy by Lawrence Livermore National Laboratory under Contract
DE-AC52-07NA27344. This research was partially supported by Basic
Science Research Program through the National Research Foundation of
Korea (NRF) funded by the Ministry of Education, Science and Technology
(2010-0025566).
NR 29
TC 1
Z9 1
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
EI 1361-648X
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD NOV 24
PY 2010
VL 22
IS 46
AR 465503
DI 10.1088/0953-8984/22/46/465503
PG 5
WC Physics, Condensed Matter
SC Physics
GA 675OA
UT WOS:000283838800013
PM 21403372
ER
PT J
AU Vaknin, D
Garlea, VO
Demmel, F
Mamontov, E
Nojiri, H
Martin, C
Chiorescu, I
Qiu, Y
Kogerler, P
Fielden, J
Engelhardt, L
Rainey, C
Luban, M
AF Vaknin, D.
Garlea, V. O.
Demmel, F.
Mamontov, E.
Nojiri, H.
Martin, C.
Chiorescu, I.
Qiu, Y.
Koegerler, P.
Fielden, J.
Engelhardt, L.
Rainey, C.
Luban, M.
TI Level crossings and zero-field splitting in the {Cr-8}-cubane spin
cluster studied using inelastic neutron scattering and magnetization
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID ANISOTROPY; MOLECULES; MAGNET
AB Inelastic neutron scattering (INS) in variable magnetic field and high-field magnetization measurements in the millikelvin temperature range were performed to gain insight into the low-energy magnetic excitation spectrum and the field-induced level crossings in the molecular spin cluster {Cr-8}-cubane. These complementary techniques provide consistent estimates of the lowest level-crossing field. The overall features of the experimental data are explained using an isotropic Heisenberg model, based on three distinct exchange interactions linking the eight Cr-III paramagnetic centers (spins s = 3/2), that is supplemented with a relatively large molecular magnetic anisotropy term for the lowest S = 1 multiplet. It is noted that the existence of the anisotropy is clearly evident from the magnetic field dependence of the excitations in the INS measurements, while the magnetization measurements are not sensitive to its effects.
C1 [Vaknin, D.; Koegerler, P.; Fielden, J.; Luban, M.] Iowa State Univ, Ames Lab, Dept Phys & Astron, Ames, IA 50011 USA.
[Garlea, V. O.; Mamontov, E.] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
[Demmel, F.] Rutherford Appleton Lab, ISIS Pulsed Neutron Facil, Didcot OX11 0QX, Oxon, England.
[Nojiri, H.] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan.
[Martin, C.; Chiorescu, I.] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA.
[Martin, C.; Chiorescu, I.] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA.
[Qiu, Y.] NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA.
[Qiu, Y.] Univ Maryland, College Pk, MD 20742 USA.
[Engelhardt, L.; Rainey, C.] Francis Marion Univ, Dept Phys & Astron, Florence, SC 29501 USA.
RP Vaknin, D (reprint author), Iowa State Univ, Ames Lab, Dept Phys & Astron, Ames, IA 50011 USA.
EM vaknin@ameslab.gov
RI Nojiri, Hiroyuki/B-3688-2011; Kogerler, Paul/H-5866-2013; Mamontov,
Eugene/Q-1003-2015; Garlea, Vasile/A-4994-2016; Vaknin,
David/B-3302-2009
OI Kogerler, Paul/0000-0001-7831-3953; Mamontov,
Eugene/0000-0002-5684-2675; Garlea, Vasile/0000-0002-5322-7271; Vaknin,
David/0000-0002-0899-9248
FU Office of Basic Energy Sciences, US Department of Energy
[DE-AC02-07CH11358]; Scientific User Facilities Division, Office of
Basic Energy Sciences, US Department of Energy; NSF [DMR-0654118,
DMR-0645408, DMR-0454672]; FMU Professional Development Committee; MEXT,
Japan [451]
FX We thank R E P Winpenny and J Schnack for valuable discussions. The work
at the Ames Laboratory was supported by the Office of Basic Energy
Sciences, US Department of Energy under Contract No. DE-AC02-07CH11358.
The research at Oak Ridge National Laboratory's Spallation Neutron
Source, was sponsored by the Scientific User Facilities Division, Office
of Basic Energy Sciences, US Department of Energy. The work at the NHMFL
was supported by NSF cooperative agreement Grant No. DMR-0654118 and NSF
Grant No. DMR-0645408. The work at the NCNR is supported in part by the
National Science Foundation under Agreement No. DMR-0454672. L E
acknowledges support from the FMU Professional Development Committee. H
N acknowledges support by Grant-in-Aid on Priority Areas 'High Field
Spin Science in 100 T' (Grant No. 451) from MEXT, Japan.
NR 24
TC 5
Z9 6
U1 0
U2 5
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD NOV 24
PY 2010
VL 22
IS 46
AR 466001
DI 10.1088/0953-8984/22/46/466001
PG 8
WC Physics, Condensed Matter
SC Physics
GA 675OA
UT WOS:000283838800020
PM 21403379
ER
PT J
AU Zhou, YG
Zu, XT
Yang, P
Xiao, HY
Gao, F
AF Zhou, Y. G.
Zu, X. T.
Yang, P.
Xiao, H. Y.
Gao, F.
TI Oxygen-induced magnetic properties and metallic behavior of a BN sheet
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
AB In this paper, an ab initio method has been employed to study the adsorption energies, electronic structures and magnetic properties of a BN sheet functionalized by an oxygen ( O) atom. The adsorption process is typically exothermic, and some unusual properties can be revealed with different adsorption sites. The energy gap of the BN sheet narrows due to the strong hybridization between O and BN electronic states when the O locates above a BN bond or a nitrogen atom. Upon the adsorption of O above a B3N3 ring or a boron atom, the electrons of the O-adsorbed BN system are polarized, which gives rise to a magnetic moment of 2.0 mu(B). In this case, the Fermi level crosses the valence band, resulting in the O-adsorbed BN system being metallic. Furthermore, potential energy curve analysis shows that the magnetism and metallicity of the BN system can be modulated by the external temperature and pressure.
C1 [Zhou, Y. G.; Zu, X. T.; Xiao, H. Y.] Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China.
[Yang, P.; Gao, F.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Gao, F (reprint author), Pacific NW Natl Lab, MS K8-93,POB 999, Richland, WA 99352 USA.
EM fei.gao@pnl.gov
RI Yang, Ping/E-5355-2011; Xiao, Haiyan/A-1450-2012; Gao, Fei/H-3045-2012;
OI Yang, Ping/0000-0003-4726-2860
FU Division of Materials Sciences and Engineering, Office of Basic Energy
Sciences, US Department of Energy [DE-AC05-76RL01830]; Royal Academy of
Engineering; US Department of Energy's Office of Biological and
Environmental Research
FX This study was financially supported by the Division of Materials
Sciences and Engineering, Office of Basic Energy Sciences, US Department
of Energy under Contract DE-AC05-76RL01830. X T Zu was supported by the
Royal Academy of Engineering-Research Exchanges with China and India
Awards. A portion of this research was performed using the Environmental
Molecular Sciences Laboratory, a national scientific user facility
sponsored by the US Department of Energy's Office of Biological and
Environmental Research, located at Pacific Northwest National Laboratory
and operated for DOE by Battelle.
NR 18
TC 3
Z9 3
U1 1
U2 13
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD NOV 24
PY 2010
VL 22
IS 46
AR 465303
DI 10.1088/0953-8984/22/46/465303
PG 8
WC Physics, Condensed Matter
SC Physics
GA 675OA
UT WOS:000283838800005
PM 21403364
ER
PT J
AU Johnson, JC
Nozik, AJ
Michl, J
AF Johnson, Justin C.
Nozik, Arthur J.
Michl, Josef
TI High Triplet Yield from Singlet Fission in a Thin Film of
1,3-Diphenylisobenzofuran
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID ENERGY-TRANSFER; BACTERIOCHLOROPHYLL; CAROTENOIDS; PATHWAY
AB Direct observation of triplet absorption and ground-state depletion upon pulsed excitation of a polycrystalline thin solid film of 1,3-diphenylisobenzofuran at 77 K revealed a 200 +/- 30% triplet yield, which was attributed to singlet fission.
C1 [Nozik, Arthur J.; Michl, Josef] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA.
[Johnson, Justin C.; Nozik, Arthur J.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Michl, Josef] Acad Sci Czech Republic, Inst Organ Chem & Biochem, CR-16610 Prague, Czech Republic.
RP Michl, J (reprint author), Univ Colorado, Dept Chem & Biochem, 215 UCB, Boulder, CO 80309 USA.
EM michl@eefus.colorado.edu
RI Michl, Josef/G-9376-2014; Nozik, Arthur/A-1481-2012; Nozik,
Arthur/P-2641-2016
FU U.S. Department of Energy, Office of Energy Efficiency and Renewable
Energy [XAT-5-33636-01, DE-FG36-08GO18017]; U.S. Department of Energy,
Office of Basic Energy Sciences, Division of Chemical Sciences,
Biosciences, and Geosciences [DE-AC36-08GO28308]
FX We thank the U.S. Department of Energy, Office of Energy Efficiency and
Renewable Energy, Photovoltaics Program (XAT-5-33636-01 and
DE-FG36-08GO18017 to J.M.) and the U.S. Department of Energy, Office of
Basic Energy Sciences, Division of Chemical Sciences, Biosciences, and
Geosciences (DE-AC36-08GO28308 to J.C.J. and A.J.N.).
NR 14
TC 103
Z9 103
U1 5
U2 53
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD NOV 24
PY 2010
VL 132
IS 46
BP 16302
EP 16303
DI 10.1021/ja104123r
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 687QC
UT WOS:000284792000002
PM 21043452
ER
PT J
AU Schlueter, JA
Wiehl, L
Park, H
de Souza, M
Lang, M
Koo, HJ
Whangbo, MH
AF Schlueter, John A.
Wiehl, Leonore
Park, Hyunsoo
de Souza, Mariano
Lang, Michael
Koo, Hyun-Joo
Whangbo, Myung-Hwan
TI Enhanced Critical Temperature in a Dual-Layered Molecular Superconductor
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID PRESSURE ORGANIC SUPERCONDUCTOR; ELECTRON-DONOR MOLECULE; BEDT-TTF;
STRUCTURAL GENEALOGY; SALTS; CONDUCTORS; TETRATHIAFULVALENE; CRYSTAL;
PHASES
AB Single-crystal X-ray diffraction has shown that the high-critical-temperature (T(c)) phase of the filamentary molecular superconductor (BEDT-TTF)(2)Ag(CF(3))(4)(1,1,2-trichloroethane) [BEDT-TTF = bis(ethylenedithio)tetrathiafulvalene] contains layers of BEDT-TTF radical cations with alternating kappa- and alpha'-type packing motifs. This molecule-based superconductor with dual BEDT-TTF packing motifs has a T(c) five times higher than that of its polymorph that contains only kappa-type packing.
C1 [Schlueter, John A.; Park, Hyunsoo] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Wiehl, Leonore] Goethe Univ Frankfurt, Inst Geosci, D-60438 Frankfurt, Germany.
[de Souza, Mariano; Lang, Michael] Goethe Univ Frankfurt, Inst Phys, D-60438 Frankfurt, Germany.
[Koo, Hyun-Joo] Kyung Hee Univ, Dept Chem, Seoul 130701, South Korea.
[Koo, Hyun-Joo] Kyung Hee Univ, Res Inst Basic Sci, Seoul 130701, South Korea.
[Whangbo, Myung-Hwan] N Carolina State Univ, Dept Chem, Raleigh, NC 27695 USA.
RP Schlueter, JA (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM JASchlueter@anl.gov
RI de Souza, Mariano/F-5219-2012
OI de Souza, Mariano/0000-0002-2466-3402
FU National Science Foundation/Department of Energy [NSF/CHE-0822838]; U.S.
Department of Energy, Office of Science, Office of Basic Energy Sciences
[DE-AC02-06CH11357]; Office of Basic Energy Sciences, Division of
Materials Sciences, U.S. Department of Energy [DE-FG02-86ER45259]
FX We thank D. Naumann and T. Roy (Universitat Koln) for providing the
[Ag(CF3)4]- anion. ChemMatCARS Sector
15 is principally supported by the National Science
Foundation/Department of Energy under grant number NSF/CHE-0822838. Use
of the Advanced Photon Source was supported by the U.S. Department of
Energy, Office of Science, Office of Basic Energy Sciences, under
Contract No. DE-AC02-06CH11357. Work at NCSU was supported by the Office
of Basic Energy Sciences, Division of Materials Sciences, U.S.
Department of Energy, under Grant DE-FG02-86ER45259, and by the
resources of the NERSC Center and the HPC center of NCSU.
NR 22
TC 21
Z9 21
U1 0
U2 12
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD NOV 24
PY 2010
VL 132
IS 46
BP 16308
EP 16310
DI 10.1021/ja105854m
PG 3
WC Chemistry, Multidisciplinary
SC Chemistry
GA 687QC
UT WOS:000284792000004
PM 21038887
ER
PT J
AU Wang, GF
Sun, W
Luo, Y
Fang, N
AF Wang, Gufeng
Sun, Wei
Luo, Yong
Fang, Ning
TI Resolving Rotational Motions of Nano-objects in Engineered Environments
and Live Cells with Gold Nanorods and Differential Interference Contrast
Microscopy
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID SINGLE-PARTICLE TRACKING; TUG-OF-WAR; ORIENTATION SENSORS; MOLECULAR
MOTORS; TORQUE COMPONENT; CARGO TRANSPORT; MYOSIN-V; KINESIN;
F-1-ATPASE; NANOPARTICLES
AB Gold nanorods are excellent orientation probes due to their anisotropic optical properties. Their dynamic rotational motion in the 3D space can be disclosed with Nomarski-type differential interference contrast (DIC) microscopy. We demonstrate that by using the combination of gold nanorod probes and DIC microscopy, we are able to resolve rotational motions of nano-cargos transported by motor proteins at video rate not only on engineered surfaces but also on cytoskeleton tracks in live cells.
C1 [Fang, Ning] Iowa State Univ, Ames Lab, US Dept Energy, Ames, IA 50011 USA.
Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
RP Fang, N (reprint author), Iowa State Univ, Ames Lab, US Dept Energy, Ames, IA 50011 USA.
EM nfang@iastate.edu
RI Wang, Gufeng/B-3972-2011; Fang, Ning/A-8456-2011
FU Iowa State University [DE-AC02-07CH11358]; Chemical Sciences,
Geosciences, and Biosciences Division; Basic Energy Sciences; Office of
Science; U.S. Department of Energy; Iowa Center for Advanced
Neurotoxicology
FX The Ames Laboratory is operated for the U.S. Department of Energy by
Iowa State University under contract no. DE-AC02-07CH11358. This work
was supported by the Chemical Sciences, Geosciences, and Biosciences
Division, Basic Energy Sciences, Office of Science, U.S. Department of
Energy, and the Iowa Center for Advanced Neurotoxicology (Seed Funding).
The authors thank Dr. William O. Hancock at The Pennsylvania State
University for kindly providing BL21 (DE3) E. coli bacteria with the
full-length His-tagged kinesin plasmid and Drs. Edward W. Yu and Feng
Long at Iowa State University for help in purifying kinesin proteins.
NR 40
TC 74
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U1 3
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PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD NOV 24
PY 2010
VL 132
IS 46
BP 16417
EP 16422
DI 10.1021/ja106506k
PG 6
WC Chemistry, Multidisciplinary
SC Chemistry
GA 687QC
UT WOS:000284792000032
PM 21043495
ER
PT J
AU Bishop, CL
Bergin, AMH
Fessart, D
Borgdorff, V
Hatzimasoura, E
Garbe, JC
Stampfer, MR
Koh, J
Beach, DH
AF Bishop, Cleo L.
Bergin, Ann-Marie H.
Fessart, Delphine
Borgdorff, Viola
Hatzimasoura, Elizabeth
Garbe, James C.
Stampfer, Martha R.
Koh, Jim
Beach, David H.
TI Primary Cilium-Dependent and -Independent Hedgehog Signaling Inhibits
p16(INK4A)
SO MOLECULAR CELL
LA English
DT Article
ID GLYCOGEN-SYNTHASE KINASE-3; TUMOR-SUPPRESSOR; CELL-DIVISION; REPLICATIVE
SENESCENCE; INK4/ARF LOCUS; TARGET GENE; EXPRESSION; CANCER;
PHOSPHORYLATION; BINDING
AB In a genome-wide siRNA, analysis of P16(INK4a) (p16) modulators, we identify the Hedgehog (Hh) pathway component SUFU and formally demonstrate that Hh signaling promotes mitogenesis by suppression of p16. A fragment of the Hh-responsive GLI2 transcription factor directly binds and inhibits the p16 promoter and senescence is associated with the loss of nuclear GLI2. Hh components partially reside in the primary cilium (PC), and the small fraction of cells in mass culture that elaborate a PC have the lowest expression of p16. Suppression of p16 is effected by both PC-dependent and -independent routes, and ablation of p16 renders cells insensitive to an Hh inhibitor and increases PC formation. These results directly link a well-established developmental mitogenic pathway with a key tumor suppressor and contribute to the molecular understanding of replicative senescence, Hh-mediated oncogenesis, and potentially the role of p16 in aging.
C1 [Bishop, Cleo L.; Bergin, Ann-Marie H.; Fessart, Delphine; Borgdorff, Viola; Hatzimasoura, Elizabeth; Beach, David H.] Barts & London Queen Marys Sch Med & Dent, Blizard Inst Cell & Mol Sci, London E1 2AT, England.
[Garbe, James C.; Stampfer, Martha R.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
[Koh, Jim] Duke Univ, Sch Med, Dept Surg, Div Surg Sci, Durham, NC 27710 USA.
RP Bishop, CL (reprint author), Barts & London Queen Marys Sch Med & Dent, Blizard Inst Cell & Mol Sci, 4 Newark St, London E1 2AT, England.
EM c.l.bishop@qmul.ac.uk
RI FESSART, Delphine/J-2784-2014
OI FESSART, Delphine/0000-0001-7566-5670
FU Medical Research Council; The Wellcome Trust; Cancer Research UK; MRC;
NIH [U54 CA112970]; Office of Energy Research, Office of Health and
Biological Research, U.S. Department of Energy [DE-AC02-05CH11231]
FX We thank M. Overhoff, M. Philpott, and J. Wang for useful discussion and
critical reading of the manuscript. C.L.B. was supported by the Medical
Research Council and The Wellcome Trust, D.F. by Cancer Research UK,
A.M.H.B. by the MRC, V.B. and E.H. by The Wellcome Trust. J.C.G. and
M.R.S. were supported by NIH U54 CA112970 and the Office of Energy
Research, Office of Health and Biological Research, U.S. Department of
Energy under Contract No. DE-AC02-05CH11231.
NR 49
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PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 1097-2765
J9 MOL CELL
JI Mol. Cell
PD NOV 24
PY 2010
VL 40
IS 4
BP 533
EP 547
DI 10.1016/j.molcel.2010.10.027
PG 15
WC Biochemistry & Molecular Biology; Cell Biology
SC Biochemistry & Molecular Biology; Cell Biology
GA 690FR
UT WOS:000284988400007
PM 21095584
ER
PT J
AU Kim, MG
Kreyssig, A
Lee, YB
Kim, JW
Pratt, DK
Thaler, A
Bud'ko, SL
Canfield, PC
Harmon, BN
McQueeney, RJ
Goldman, AI
AF Kim, M. G.
Kreyssig, A.
Lee, Y. B.
Kim, J. W.
Pratt, D. K.
Thaler, A.
Bud'ko, S. L.
Canfield, P. C.
Harmon, B. N.
McQueeney, R. J.
Goldman, A. I.
TI Commensurate antiferromagnetic ordering in Ba(Fe1-xCox)(2)As-2
determined by x-ray resonant magnetic scattering at the Fe K edge
SO PHYSICAL REVIEW B
LA English
DT Article
AB We describe x-ray resonant magnetic diffraction measurements at the Fe K edge of both the parent BaFe2As2 and superconducting Ba(Fe0.953Co0.047)(2)As-2 compounds. From these high-resolution measurements we conclude that the magnetic structure is commensurate for both compositions. The energy spectrum of the resonant scattering is in reasonable agreement with theoretical calculations using the full-potential linear augmented plane-wave method with a local density functional.
C1 [Kim, M. G.; Kreyssig, A.; Lee, Y. B.; Pratt, D. K.; Thaler, A.; Bud'ko, S. L.; Canfield, P. C.; Harmon, B. N.; McQueeney, R. J.; Goldman, A. I.] US DOE, Ames Lab, Ames, IA 50011 USA.
[Kim, M. G.; Kreyssig, A.; Lee, Y. B.; Pratt, D. K.; Thaler, A.; Bud'ko, S. L.; Canfield, P. C.; Harmon, B. N.; McQueeney, R. J.; Goldman, A. I.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Kim, J. W.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Kim, MG (reprint author), US DOE, Ames Lab, Ames, IA 50011 USA.
RI Kim, Min Gyu/B-8637-2012; Canfield, Paul/H-2698-2014; Thaler,
Alexander/J-5741-2014; McQueeney, Robert/A-2864-2016
OI Kim, Min Gyu/0000-0001-7676-454X; Thaler, Alexander/0000-0001-5066-8904;
McQueeney, Robert/0000-0003-0718-5602
FU U.S. DOE, Office of Science, Basic Energy Sciences [DE-AC02-07CH11358];
U.S. DOE [DE-AC02-06CH11357]
FX We acknowledge valuable discussions with J. Lang, J. Schmalian, and R.
M. Fernandes. The work at Ames Laboratory was supported by the U.S. DOE,
Office of Science, Basic Energy Sciences under Contract No.
DE-AC02-07CH11358. Use of the Advanced Photon Source was supported by
the U.S. DOE under Contract No. DE-AC02-06CH11357.
NR 36
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U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 24
PY 2010
VL 82
IS 18
AR 180412
DI 10.1103/PhysRevB.82.180412
PG 4
WC Physics, Condensed Matter
SC Physics
GA V25LC
UT WOS:000208478500001
ER
PT J
AU Blum, T
Zhou, R
Doi, T
Hayakawa, M
Izubuchi, T
Uno, S
Yamada, N
AF Blum, Tom
Zhou, Ran
Doi, Takumi
Hayakawa, Masashi
Izubuchi, Taku
Uno, Shunpei
Yamada, Norikazu
TI Electromagnetic mass splittings of the low lying hadrons and quark
masses from 2+1 flavor lattice QCD plus QED
SO PHYSICAL REVIEW D
LA English
DT Article
ID CHIRAL PERTURBATION-THEORY; FERMIONS; RATIOS; DIFFERENCE; SCATTERING
AB Results computed in lattice QCD + QED are presented for the electromagnetic mass splittings of the low-lying hadrons. These are used to determine the renormalized, nondegenerate, light quark masses. It is found that m(u) ((MS) over bar) = 2.24(10)(34), m(d)((MS) over bar) = 4.65(15)(32), and m(s)((MS) over bar) = 97.6(2.9)(5.5) MeV at the renormalization scale 2 GeV, where the first error is statistical and the second systematic. We find the lowest-order electromagnetic splitting (m(pi+) - m(pi 0))(QED) = 3.38(23) MeV, the splittings including next-to-leading order, (m(pi+) - m(pi 0))(QED) = 4.50(23) MeV, (m(K+) - m(K0))(QED) = 1.87(10) MeV, and the m(u) not equal m(d) contribution to the kaon mass difference, (m(K+) - m(K0))((mu - md)) = 5.840(96) MeV. All errors are statistical only, and the next-to-leading-order pion splitting is only approximate in that it does not contain all next-to-leading-order contributions. We also computed the proton-neutron mass difference, including for the first time, QED interactions in a realistic 2 + 1 flavor calculation. We find (m(p) - m(n))(QED) = 0.383(68) MeV, m(p) - m(n))((mu - md)) = -2.51(14) MeV (statistical errors only), and the total m(p) - m(n) = -2.13(16) x (70) MeV, where the first error is statistical, and the second, part of the systematic error. The calculations are carried out on QCD ensembles generated by the RBC and UKQCD collaborations, using domain wall fermions and the Iwasaki gauge action (gauge coupling beta = 2.13 and lattice cutoff a(-1) approximate to 1.78 GeV). We use two lattice sizes, 16(3) and 24(3) ((1.8 fm)(3) and (2.7 fm)(3)), to address finite-volume effects. Noncompact QED is treated in the quenched approximation. The valence pseudoscalar meson masses in our study cover a range of about 250 to 700 MeV, though we use only those up to about 400 MeV to quote final results. We present new results for the electromagnetic low-energy constants in SU(3) and SU(2) partially quenched chiral perturbation theory to the next-to-leading order, obtained from fits to our data. Detailed analysis of systematic errors in our results and methods for improving them are discussed. Finally, new analytic results for SU(2)(L) x SU(2)(R)-plus-kaon chiral perturbation theory, including the one-loop logs proportional to alpha(em)m, are given.
C1 [Blum, Tom; Zhou, Ran] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA.
[Blum, Tom; Zhou, Ran; Izubuchi, Taku; Uno, Shunpei] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA.
[Doi, Takumi] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan.
[Doi, Takumi] RIKEN Nishina Ctr Accelerator Based Sci, Wako, Saitama 3510198, Japan.
[Hayakawa, Masashi; Uno, Shunpei] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan.
[Yamada, Norikazu] High Energy Accelerator Res Org KEK, Inst Particle & Nucl Studies, KEK Theory Ctr, Tsukuba, Ibaraki 3050801, Japan.
[Yamada, Norikazu] Grad Univ Adv Studies Sokendai, Sch High Energy Accelerator Sci, Tsukuba, Ibaraki 3050801, Japan.
RP Blum, T (reprint author), Univ Connecticut, Dept Phys, Storrs, CT 06269 USA.
RI zhou, ran/O-6309-2014
OI zhou, ran/0000-0002-0640-1820
FU U.S. DOE [21.5985]; JSPS [20540261, 22224003, 227180]; Japanese Ministry
of Education [20105001, 20105002, 22740183]; Nagoya University; LLC with
the U.S. Department of Energy [DE-AC02-98CH10886]
FX We thank E. Scholz and the RBC and UKQCD collaborations for providing us
with the pure QCD LEC's used in this work. T. B. thanks N. Christ for
helpful discussions on the EM induced part of the residual mass. T. I.
thanks C. Bernard, M. Creutz, and E. Eichten for illuminating
discussions. T. B. and T. I. thank G. Colangelo for helpful discussions
on finite-volume chiral perturbation theory. T. B. and T. I. thank the
organizers of the CERN Theory Institute "Future directions in Lattice
Gauge Theory-LGT10,'' where a part of this paper was finalized. T. B.
and T.I. also appreciate discussions on fK/fpi
(Sec. VIII) with G. Colangelo, A. Juettner, L. Lellouch, C. Sachrajda,
and Y. Kuramashi held at the workshop. T. I. also thanks W. Marciano
concerning this section. We are grateful to USQCD and the RBRC for
providing time on the DOE and RBRC QCDOC supercomputers at BNL for the
computations reported here. T.B. and R.Z. were supported in part by the
U.S. DOE under Contract No. DE-FG02-92ER40716, T.D. by JSPS Grant-in-Aid
No. 21.5985, M. H. by JSPS Grant-in-Aid of Scientific Research (C) Grant
No. 20540261 and (S) Grant No. 22224003, T.I. and N.Y. by Grant-in-Aid
of the Japanese Ministry of Education (Nos. 20105001, 20105002,
22740183), and S.U. by the JSPS Grant-in-Aid No. 227180 and Nagoya
University Global COE program, Quest for Fundamental Principles in the
Universe. This manuscript has been authored by an employee (T.I.) of
Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886
with the U.S. Department of Energy.
NR 67
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 24
PY 2010
VL 82
IS 9
AR 094508
DI 10.1103/PhysRevD.82.094508
PG 47
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 731RX
UT WOS:000288128100006
ER
PT J
AU Chekanov, SV
Levy, C
Proudfoot, J
Yoshida, R
AF Chekanov, S. V.
Levy, C.
Proudfoot, J.
Yoshida, R.
TI New approach for jet-shape identification of TeV-scale particles at the
LHC
SO PHYSICAL REVIEW D
LA English
DT Article
ID HADRON-COLLISIONS
AB A new approach to jet-shape identification based on linear regression is discussed. It is designed for searches for new particles at the TeV scale decaying hadronically with strongly collimated jets. We illustrate the method using a Monte Carlo simulation for pp collisions at the LHC with the goal to reduce the contribution of QCD-induced events. We focus on a rather generic example X -> t (t) over bar -> hadrons, with X being a heavy particle, but the approach is well suited for reconstruction of other decay channels characterized by a cascade decay of known states.
C1 [Chekanov, S. V.; Levy, C.; Proudfoot, J.; Yoshida, R.] Argonne Natl Lab, HEP Div, Argonne, IL 60439 USA.
[Levy, C.] Northeastern Univ, Dept Phys, Boston, MA 02115 USA.
RP Chekanov, SV (reprint author), Argonne Natl Lab, HEP Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
FU U.S. Department of Energy Office of Science laboratory
[DE-AC02-06CH11357]
FX We thank Lily Asquith for discussion and checking alternative jet
algorithms. The submitted manuscript has been created by UChicago
Argonne, LLC, Operator of Argonne National Laboratory (''Argonne'').
Argonne, a U.S. Department of Energy Office of Science laboratory, is
operated under Contract No. DE-AC02-06CH11357.
NR 24
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 24
PY 2010
VL 82
IS 9
AR 094029
DI 10.1103/PhysRevD.82.094029
PG 8
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 731RX
UT WOS:000288128100004
ER
PT J
AU Kribs, GD
Martin, A
Roy, TS
Spannowsky, M
AF Kribs, Graham D.
Martin, Adam
Roy, Tuhin S.
Spannowsky, Michael
TI Discovering Higgs bosons of the MSSM using jet substructure
SO PHYSICAL REVIEW D
LA English
DT Article
ID FERMILAB TEVATRON; STANDARD MODEL; LHC; MASS; COLLIDERS; HADRON; QUARKS;
PHYSICS; SEARCH; DECAYS
AB We present a qualitatively new approach to discover Higgs bosons of the minimal supersymmetric standard model (MSSM) at the LHC using jet substructure techniques applied to boosted Higgs decays. These techniques are ideally suited to the MSSM, since the lightest Higgs boson overwhelmingly decays to b (b) over bar throughout the entire parameter space, while the heavier neutral Higgs bosons, if light enough to be produced in a cascade, also predominantly decay to b (b) over bar. The Higgs production we consider arises from superpartner production where superpartners cascade decay into Higgs bosons. We study this mode of Higgs production for several superpartner hierarchies: m((q) over bar,) m((g) over bar) > m((W) over bar,(B) over bar) > m(h) + mu; m((q) over bar,) m((g) over bar) > m((W) over bar,(B) over bar) > m(h,H,A) + mu; and m((q) over bar), m((g) over bar) > m((W) over bar) > m(h) + mu with m((B) over bar) similar or equal to mu. In these cascades, the Higgs bosons are boosted, with pT > 200 GeV a large fraction of the time. Since Higgses appear in cascades originating from squarks and/or gluinos, the cross section for events with at least one Higgs can be the same order as squark/gluino production. Given 10 fb(-1) of 14 TeV LHC data, with m(<(q)over bar)> less than or similar to 1 TeV, and one of the above superpartner mass hierarchies, our estimate of S/root B p of the Higgs signal is sufficiently high that the b<(b)over bar> mode can become the discovery mode of the lightest Higgs boson of the MSSM.
C1 [Kribs, Graham D.; Roy, Tuhin S.; Spannowsky, Michael] Univ Oregon, Dept Phys, Eugene, OR 97403 USA.
[Martin, Adam] Dept Theoret Phys, Fermilab, Batavia, IL 60510 USA.
RP Kribs, GD (reprint author), Univ Oregon, Dept Phys, Eugene, OR 97403 USA.
FU U. S. Department of Energy [DE-FG02-96ER40969]; Fermilab; LLC with U.S.
Department of Energy [DE-AC02-07CH11359]
FX G.D.K. thanks Fermilab and the Perimeter Institute and T.S.R. thanks the
Weizmann Institute and Fermilab for hospitality where part of this work
was completed. This work was supported in part by the U. S. Department
of Energy under Contract No. DE-FG02-96ER40969 (G.D.K., T.S.R., M.S.).
A.M. is supported by Fermilab operated by Fermi Research Alliance, LLC
under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy.
NR 68
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PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 24
PY 2010
VL 82
IS 9
AR 095012
DI 10.1103/PhysRevD.82.095012
PG 16
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 731RX
UT WOS:000288128100008
ER
PT J
AU Abazov, VM
Abbott, B
Abolins, M
Acharya, BS
Adams, M
Adams, T
Alexeev, GD
Alkhazov, G
Alton, A
Alverson, G
Alves, GA
Ancu, LS
Aoki, M
Arnoud, Y
Arov, M
Askew, A
Asman, B
Atramentov, O
Avila, C
BackusMayes, J
Badaud, F
Bagby, L
Baldin, B
Bandurin, DV
Banerjee, S
Barberis, E
Baringer, P
Barreto, J
Bartlett, JF
Bassler, U
Beale, S
Bean, A
Begalli, M
Begel, M
Belanger-Champagne, C
Bellantoni, L
Benitez, JA
Beri, SB
Bernardi, G
Bernhard, R
Bertram, I
Besancon, M
Beuselinck, R
Bezzubov, VA
Bhat, PC
Bhatnagar, V
Blazey, G
Blessing, S
Bloom, K
Boehnlein, A
Boline, D
Bolton, TA
Boos, EE
Borissov, G
Bose, T
Brandt, A
Brandt, O
Brock, R
Brooijmans, G
Bross, A
Brown, D
Brown, J
Bu, XB
Buchholz, D
Buehler, M
Buescher, V
Bunichev, V
Burdin, S
Burnett, TH
Buszello, CP
Calpas, B
Calvet, S
Camacho-Perez, E
Carrasco-Lizarraga, MA
Carrera, E
Casey, BCK
Castilla-Valdez, H
Chakrabarti, S
Chakraborty, D
Chan, KM
Chandra, A
Chen, G
Chevalier-Thery, S
Cho, DK
Cho, SW
Choi, S
Choudhary, B
Christoudias, T
Cihangir, S
Claes, D
Clutter, J
Cooke, MS
Cooke, M
Cooper, WE
Corcoran, M
Couderc, F
Cousinou, MC
Croc, A
Cutts, D
Cwiok, M
Das, A
Davies, G
De, K
de Jong, SJ
De La Cruz-Burelo, E
Deliot, F
Demarteau, M
Demina, R
Denisov, D
Denisov, SP
Desai, S
DeVaughan, K
Diehl, HT
Diesburg, M
Dominguez, A
Dorland, T
Dubey, A
Dudko, LV
Duggan, D
Duperrin, A
Dutt, S
Dyshkant, A
Eads, M
Edmunds, D
Ellison, J
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Gay, P
Geist, W
Geng, W
Gerbaudo, D
Gerber, CE
Gershtein, Y
Ginther, G
Golovanov, G
Goussiou, A
Grannis, PD
Greder, S
Greenlee, H
Greenwood, ZD
Gregores, EM
Grenier, G
Gris, P
Grivaz, JF
Grohsjean, A
Grunendahl, S
Grunewald, MW
Guo, F
Guo, J
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Gutierrez, P
Haas, A
Hagopian, S
Haley, J
Han, L
Harder, K
Harel, A
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Hays, J
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Hedin, D
Hegab, H
Heinson, AP
Heintz, U
Hensel, C
Heredia-De La Cruz, I
Herner, K
Hesketh, G
Hildreth, MD
Hirosky, R
Hoang, T
Hobbs, JD
Hoeneisen, B
Hohlfeld, M
Hossain, S
Hubacek, Z
Huske, N
Hynek, V
Iashvili, I
Illingworth, R
Ito, AS
Jabeen, S
Jaffre, M
Jain, S
Jamin, D
Jesik, R
Johns, K
Johnson, M
Johnston, D
Jonckheere, A
Jonsson, P
Joshi, J
Juste, A
Kaadze, K
Kajfasz, E
Karmanov, D
Kasper, PA
Katsanos, I
Kehoe, R
Kermiche, S
Khalatyan, N
Khanov, A
Kharchilava, A
Kharzheev, YN
Khatidze, D
Kirby, MH
Kohli, JM
Kozelov, AV
Kraus, J
Kumar, A
Kupco, A
Kurca, T
Kuzmin, VA
Kvita, J
Lammers, S
Landsberg, G
Lebrun, P
Lee, HS
Lee, SW
Lee, WM
Lellouch, J
Li, L
Li, QZ
Lietti, SM
Lim, JK
Lincoln, D
Linnemann, J
Lipaev, VV
Lipton, R
Liu, Y
Liu, Z
Lobodenko, A
Lokajicek, M
Love, P
Lubatti, HJ
Luna-Garcia, R
Lyon, AL
Maciel, AKA
Mackin, D
Madar, R
Magana-Villalba, R
Malik, S
Malyshev, VL
Maravin, Y
Martinez-Ortega, J
McCarthy, R
McGivern, CL
Meijer, MM
Melnitchouk, A
Menezes, D
Mercadante, PG
Merkin, M
Meyer, A
Meyer, J
Mondal, NK
Muanza, GS
Mulhearn, M
Nagy, E
Naimuddin, M
Narain, M
Nayyar, R
Neal, HA
Negret, JP
Neustroev, P
Nilsen, H
Novaes, SF
Nunnemann, T
Obrant, G
Onoprienko, D
Orduna, J
Osman, N
Osta, J
Garzon, GJOY
Owen, M
Padilla, M
Pangilinan, M
Parashar, N
Parihar, V
Park, SK
Parsons, J
Partridge, R
Parua, N
Patwa, A
Penning, B
Perfilov, M
Peters, K
Peters, Y
Petrillo, G
Petroff, P
Piegaia, R
Piper, J
Pleier, MA
Podesta-Lerma, PLM
Podstavkov, VM
Pol, ME
Polozov, P
Popov, AV
Prewitt, M
Price, D
Protopopescu, S
Qian, J
Quadt, A
Quinn, B
Rangel, MS
Ranjan, K
Ratoff, PN
Razumov, I
Renkel, P
Rich, P
Rijssenbeek, M
Ripp-Baudot, I
Rizatdinova, F
Rominsky, M
Royon, C
Rubinov, P
Ruchti, R
Safronov, G
Sajot, G
Sanchez-Hernandez, A
Sanders, MP
Sanghi, B
Santos, AS
Savage, G
Sawyer, L
Scanlon, T
Schamberger, RD
Scheglov, Y
Schellman, H
Schliephake, T
Schlobohm, S
Schwanenberger, C
Schwienhorst, R
Sekaric, J
Severini, H
Shabalina, E
Shary, V
Shchukin, AA
Shivpuri, RK
Simak, V
Sirotenko, V
Skubic, P
Slattery, P
Smirnov, D
Smith, KJ
Snow, GR
Snow, J
Snyder, S
Soldner-Rembold, S
Sonnenschein, L
Sopczak, A
Sosebee, M
Soustruznik, K
Spurlock, B
Stark, J
Stolin, V
Stoyanova, DA
Strauss, E
Strauss, M
Strom, D
Stutte, L
Svoisky, P
Takahashi, M
Tanasijczuk, A
Taylor, W
Titov, M
Tokmenin, VV
Tsybychev, D
Tuchming, B
Tully, C
Tuts, PM
Uvarov, L
Uvarov, S
Uzunyan, S
Van Kooten, R
van Leeuwen, WM
Varelas, N
Varnes, EW
Vasilyev, IA
Verdier, P
Vertogradov, LS
Verzocchi, M
Vesterinen, M
Vilanova, D
Vint, P
Vokac, P
Wahl, HD
Wang, MHLS
Warchol, J
Watts, G
Wayne, M
Weber, M
Wetstein, M
White, A
Wicke, D
Williams, MRJ
Wilson, GW
Wimpenny, SJ
Wobisch, M
Wood, DR
Wyatt, TR
Xie, Y
Xu, C
Yacoob, S
Yamada, R
Yang, WC
Yasuda, T
Yatsunenko, YA
Ye, Z
Yin, H
Yip, K
Yoo, HD
Youn, SW
Yu, J
Zelitch, S
Zhao, T
Zhou, B
Zhou, N
Zhu, J
Zielinski, M
Zieminska, D
Zivkovic, L
AF Abazov, V. M.
Abbott, B.
Abolins, M.
Acharya, B. S.
Adams, M.
Adams, T.
Alexeev, G. D.
Alkhazov, G.
Alton, A.
Alverson, G.
Alves, G. A.
Ancu, L. S.
Aoki, M.
Arnoud, Y.
Arov, M.
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Bean, A.
Begalli, M.
Begel, M.
Belanger-Champagne, C.
Bellantoni, L.
Benitez, J. A.
Beri, S. B.
Bernardi, G.
Bernhard, R.
Bertram, I.
Besancon, M.
Beuselinck, R.
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Bhat, P. C.
Bhatnagar, V.
Blazey, G.
Blessing, S.
Bloom, K.
Boehnlein, A.
Boline, D.
Bolton, T. A.
Boos, E. E.
Borissov, G.
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Brandt, O.
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Brooijmans, G.
Bross, A.
Brown, D.
Brown, J.
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Buchholz, D.
Buehler, M.
Buescher, V.
Bunichev, V.
Burdin, S.
Burnett, T. H.
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Calpas, B.
Calvet, S.
Camacho-Perez, E.
Carrasco-Lizarraga, M. A.
Carrera, E.
Casey, B. C. K.
Castilla-Valdez, H.
Chakrabarti, S.
Chakraborty, D.
Chan, K. M.
Chandra, A.
Chen, G.
Chevalier-Thery, S.
Cho, D. K.
Cho, S. W.
Choi, S.
Choudhary, B.
Christoudias, T.
Cihangir, S.
Claes, D.
Clutter, J.
Cooke, M. S.
Cooke, M.
Cooper, W. E.
Corcoran, M.
Couderc, F.
Cousinou, M. -C.
Croc, A.
Cutts, D.
Cwiok, M.
Das, A.
Davies, G.
De, K.
de Jong, S. J.
De La Cruz-Burelo, E.
Deliot, F.
Demarteau, M.
Demina, R.
Denisov, D.
Denisov, S. P.
Desai, S.
DeVaughan, K.
Diehl, H. T.
Diesburg, M.
Dominguez, A.
Dorland, T.
Dubey, A.
Dudko, L. V.
Duggan, D.
Duperrin, A.
Dutt, S.
Dyshkant, A.
Eads, M.
Edmunds, D.
Ellison, J.
Elvira, V. D.
Enari, Y.
Eno, S.
Evans, H.
Evdokimov, A.
Evdokimov, V. N.
Facini, G.
Ferapontov, A. V.
Ferbel, T.
Fiedler, F.
Filthaut, F.
Fisher, W.
Fisk, H. E.
Fortner, M.
Fox, H.
Fuess, S.
Gadfort, T.
Garcia-Bellido, A.
Gavrilov, V.
Gay, P.
Geist, W.
Geng, W.
Gerbaudo, D.
Gerber, C. E.
Gershtein, Y.
Ginther, G.
Golovanov, G.
Goussiou, A.
Grannis, P. D.
Greder, S.
Greenlee, H.
Greenwood, Z. D.
Gregores, E. M.
Grenier, G.
Gris, Ph.
Grivaz, J. -F.
Grohsjean, A.
Gruenendahl, S.
Gruenewald, M. W.
Guo, F.
Guo, J.
Gutierrez, G.
Gutierrez, P.
Haas, A.
Hagopian, S.
Haley, J.
Han, L.
Harder, K.
Harel, A.
Hauptman, J. M.
Hays, J.
Hebbeker, T.
Hedin, D.
Hegab, H.
Heinson, A. P.
Heintz, U.
Hensel, C.
Heredia-De La Cruz, I.
Herner, K.
Hesketh, G.
Hildreth, M. D.
Hirosky, R.
Hoang, T.
Hobbs, J. D.
Hoeneisen, B.
Hohlfeld, M.
Hossain, S.
Hubacek, Z.
Huske, N.
Hynek, V.
Iashvili, I.
Illingworth, R.
Ito, A. S.
Jabeen, S.
Jaffre, M.
Jain, S.
Jamin, D.
Jesik, R.
Johns, K.
Johnson, M.
Johnston, D.
Jonckheere, A.
Jonsson, P.
Joshi, J.
Juste, A.
Kaadze, K.
Kajfasz, E.
Karmanov, D.
Kasper, P. A.
Katsanos, I.
Kehoe, R.
Kermiche, S.
Khalatyan, N.
Khanov, A.
Kharchilava, A.
Kharzheev, Y. N.
Khatidze, D.
Kirby, M. H.
Kohli, J. M.
Kozelov, A. V.
Kraus, J.
Kumar, A.
Kupco, A.
Kurca, T.
Kuzmin, V. A.
Kvita, J.
Lammers, S.
Landsberg, G.
Lebrun, P.
Lee, H. S.
Lee, S. W.
Lee, W. M.
Lellouch, J.
Li, L.
Li, Q. Z.
Lietti, S. M.
Lim, J. K.
Lincoln, D.
Linnemann, J.
Lipaev, V. V.
Lipton, R.
Liu, Y.
Liu, Z.
Lobodenko, A.
Lokajicek, M.
Love, P.
Lubatti, H. J.
Luna-Garcia, R.
Lyon, A. L.
Maciel, A. K. A.
Mackin, D.
Madar, R.
Magana-Villalba, R.
Malik, S.
Malyshev, V. L.
Maravin, Y.
Martinez-Ortega, J.
McCarthy, R.
McGivern, C. L.
Meijer, M. M.
Melnitchouk, A.
Menezes, D.
Mercadante, P. G.
Merkin, M.
Meyer, A.
Meyer, J.
Mondal, N. K.
Muanza, G. S.
Mulhearn, M.
Nagy, E.
Naimuddin, M.
Narain, M.
Nayyar, R.
Neal, H. A.
Negret, J. P.
Neustroev, P.
Nilsen, H.
Novaes, S. F.
Nunnemann, T.
Obrant, G.
Onoprienko, D.
Orduna, J.
Osman, N.
Osta, J.
Otero y Garzon, G. J.
Owen, M.
Padilla, M.
Pangilinan, M.
Parashar, N.
Parihar, V.
Park, S. K.
Parsons, J.
Partridge, R.
Parua, N.
Patwa, A.
Penning, B.
Perfilov, M.
Peters, K.
Peters, Y.
Petrillo, G.
Petroff, P.
Piegaia, R.
Piper, J.
Pleier, M. -A.
Podesta-Lerma, P. L. M.
Podstavkov, V. M.
Pol, M. -E.
Polozov, P.
Popov, A. V.
Prewitt, M.
Price, D.
Protopopescu, S.
Qian, J.
Quadt, A.
Quinn, B.
Rangel, M. S.
Ranjan, K.
Ratoff, P. N.
Razumov, I.
Renkel, P.
Rich, P.
Rijssenbeek, M.
Ripp-Baudot, I.
Rizatdinova, F.
Rominsky, M.
Royon, C.
Rubinov, P.
Ruchti, R.
Safronov, G.
Sajot, G.
Sanchez-Hernandez, A.
Sanders, M. P.
Sanghi, B.
Santos, A. S.
Savage, G.
Sawyer, L.
Scanlon, T.
Schamberger, R. D.
Scheglov, Y.
Schellman, H.
Schliephake, T.
Schlobohm, S.
Schwanenberger, C.
Schwienhorst, R.
Sekaric, J.
Severini, H.
Shabalina, E.
Shary, V.
Shchukin, A. A.
Shivpuri, R. K.
Simak, V.
Sirotenko, V.
Skubic, P.
Slattery, P.
Smirnov, D.
Smith, K. J.
Snow, G. R.
Snow, J.
Snyder, S.
Soeldner-Rembold, S.
Sonnenschein, L.
Sopczak, A.
Sosebee, M.
Soustruznik, K.
Spurlock, B.
Stark, J.
Stolin, V.
Stoyanova, D. A.
Strauss, E.
Strauss, M.
Strom, D.
Stutte, L.
Svoisky, P.
Takahashi, M.
Tanasijczuk, A.
Taylor, W.
Titov, M.
Tokmenin, V. V.
Tsybychev, D.
Tuchming, B.
Tully, C.
Tuts, P. M.
Uvarov, L.
Uvarov, S.
Uzunyan, S.
Van Kooten, R.
van Leeuwen, W. M.
Varelas, N.
Varnes, E. W.
Vasilyev, I. A.
Verdier, P.
Vertogradov, L. S.
Verzocchi, M.
Vesterinen, M.
Vilanova, D.
Vint, P.
Vokac, P.
Wahl, H. D.
Wang, M. H. L. S.
Warchol, J.
Watts, G.
Wayne, M.
Weber, M.
Wetstein, M.
White, A.
Wicke, D.
Williams, M. R. J.
Wilson, G. W.
Wimpenny, S. J.
Wobisch, M.
Wood, D. R.
Wyatt, T. R.
Xie, Y.
Xu, C.
Yacoob, S.
Yamada, R.
Yang, W. -C.
Yasuda, T.
Yatsunenko, Y. A.
Ye, Z.
Yin, H.
Yip, K.
Yoo, H. D.
Youn, S. W.
Yu, J.
Zelitch, S.
Zhao, T.
Zhou, B.
Zhou, N.
Zhu, J.
Zielinski, M.
Zieminska, D.
Zivkovic, L.
CA D0 Collaboration
TI Search for Diphoton Events with Large Missing Transverse Energy in 6.3
fb(-1) of p(p)over-bar Collisions at root s=1.96 TeV
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID DYNAMICAL SUPERSYMMETRY BREAKING; UNIVERSAL EXTRA DIMENSIONS; E(+)E(-)
COLLISIONS; HADRON COLLIDERS; LIGHT GRAVITINO; CROSS-SECTIONS; PHOTON;
MODEL; DETECTOR; MASS
AB We report a search for diphoton events with large missing transverse energy produced in p (p) over bar collisions at root s = 1.96 TeV. The data were collected with the D0 detector at the Fermilab Tevatron Collider and correspond to 6.3 fb(-1) of integrated luminosity. The observed missing transverse energy distribution is well described by the standard model prediction, and 95% C.L. limits are derived on two realizations of theories beyond the standard model. In a gauge-mediated supersymmetry breaking scenario, the breaking scale Lambda is excluded for Lambda < 124 TeV. In a universal extra dimension model including gravitational decays, the compactification radius R-c is excluded for R-c(-1) < 477 GeV.
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[Otero y Garzon, G. J.; Piegaia, R.; Tanasijczuk, A.] Univ Buenos Aires, Buenos Aires, DF, Argentina.
[Alves, G. A.; Barreto, J.; Maciel, A. K. A.; Pol, M. -E.] Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil.
[Begalli, M.] Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil.
[Gregores, E. M.; Mercadante, P. G.] Univ Fed ABC, Santo Andre, Brazil.
[Lietti, S. M.; Novaes, S. F.; Santos, A. S.] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil.
[Beale, S.; Liu, Z.; Taylor, W.] Simon Fraser Univ, Vancouver, BC, Canada.
[Beale, S.; Liu, Z.; Taylor, W.] York Univ, Toronto, ON M3J 2R7, Canada.
[Bu, X. B.; Han, L.; Liu, Y.; Yin, H.] Univ Sci & Technol China, Hefei 230026, Peoples R China.
[Avila, C.; Negret, J. P.] Univ Los Andes, Bogota, Colombia.
[Kvita, J.; Soustruznik, K.] Charles Univ Prague, Fac Math & Phys, Ctr Particle Phys, Prague, Czech Republic.
[Hubacek, Z.; Hynek, V.; Simak, V.; Vokac, P.] Czech Tech Univ, CR-16635 Prague, Czech Republic.
[Kupco, A.; Lokajicek, M.] Acad Sci Czech Republic, Inst Phys, Ctr Particle Phys, Prague, Czech Republic.
[Hoeneisen, B.] Univ San Francisco Quito, Quito, Ecuador.
[Badaud, F.; Gay, P.; Gris, Ph.] Univ Clermont Ferrand, CNRS, IN2P3, LPC, Clermont, France.
[Arnoud, Y.; Sajot, G.; Stark, J.] Univ Grenoble 1, CNRS, IN2P3, Inst Natl Polytech Grenoble,LPSC, Grenoble, France.
[Calpas, B.; Cousinou, M. -C.; Duperrin, A.; Geng, W.; Jamin, D.; Kajfasz, E.; Kermiche, S.; Muanza, G. S.; Nagy, E.] Aix Marseille Univ, CNRS, IN2P3, CPPM, Marseille, France.
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[Geist, W.; Greder, S.; Ripp-Baudot, I.] Univ Strasbourg, CNRS, IN2P3, IPHC, Strasbourg, France.
[Grenier, G.; Kurca, T.; Lebrun, P.; Verdier, P.] Univ Lyon, Lyon, France.
[Grenier, G.; Kurca, T.; Lebrun, P.; Verdier, P.] Univ Lyon 1, CNRS, IN2P3, IPNL, F-69622 Villeurbanne, France.
[Hebbeker, T.; Meyer, A.; Sonnenschein, L.] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany.
[Bernhard, R.; Nilsen, H.] Univ Freiburg, Inst Phys, Freiburg, Germany.
[Brandt, O.; Hensel, C.; Meyer, J.; Quadt, A.; Shabalina, E.] Univ Gottingen, Inst Phys 2, Gottingen, Germany.
[Buescher, V.; Fiedler, F.; Hohlfeld, M.; Wicke, D.] Johannes Gutenberg Univ Mainz, Inst Phys, D-6500 Mainz, Germany.
[Nunnemann, T.; Sanders, M. P.] Univ Munich, Munich, Germany.
[Schliephake, T.] Berg Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany.
[Beri, S. B.; Bhatnagar, V.; Dutt, S.; Joshi, J.; Kohli, J. M.] Panjab Univ, Chandigarh 160014, India.
[Choudhary, B.; Dubey, A.; Naimuddin, M.; Nayyar, R.; Ranjan, K.; Shivpuri, R. K.] Univ Delhi, Delhi 110007, India.
[Acharya, B. S.; Banerjee, S.; Mondal, N. K.] Tata Inst Fundamental Res, Mumbai 400005, Maharashtra, India.
[Cwiok, M.; Gruenewald, M. W.] Univ Coll Dublin, Dublin 2, Ireland.
[Cho, S. W.; Choi, S.; Lee, H. S.; Lim, J. K.; Park, S. K.] Korea Univ, Korea Detector Lab, Seoul, South Korea.
[Camacho-Perez, E.; Carrasco-Lizarraga, M. A.; Castilla-Valdez, H.; De La Cruz-Burelo, E.; Heredia-De La Cruz, I.; Luna-Garcia, R.; Magana-Villalba, R.; Martinez-Ortega, J.; Orduna, J.; Podesta-Lerma, P. L. M.; Sanchez-Hernandez, A.] CINVESTAV, Mexico City 14000, DF, Mexico.
[Carrasco-Lizarraga, M. A.; van Leeuwen, W. M.] FOM Inst NIKHEF, Amsterdam, Netherlands.
[Carrasco-Lizarraga, M. A.; van Leeuwen, W. M.] Univ Amsterdam, NIKHEF, Amsterdam, Netherlands.
[Ancu, L. S.; de Jong, S. J.; Filthaut, F.; Meijer, M. M.; Svoisky, P.] Radboud Univ Nijmegen, NIKHEF, NL-6525 ED Nijmegen, Netherlands.
[Gavrilov, V.; Polozov, P.; Safronov, G.; Stolin, V.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Boos, E. E.; Bunichev, V.; Dudko, L. V.; Karmanov, D.; Kuzmin, V. A.; Merkin, M.; Perfilov, M.] Moscow MV Lomonosov State Univ, Moscow, Russia.
[Bezzubov, V. A.; Denisov, S. P.; Evdokimov, V. N.; Kozelov, A. V.; Lipaev, V. V.; Popov, A. V.; Razumov, I.; Shchukin, A. A.; Stoyanova, D. A.; Vasilyev, I. A.] Inst High Energy Phys, Protvino, Russia.
[Alkhazov, G.; Lobodenko, A.; Neustroev, P.; Obrant, G.; Scheglov, Y.; Uvarov, L.; Uvarov, S.] Petersburg Nucl Phys Inst, St Petersburg, Russia.
[Asman, B.; Belanger-Champagne, C.] Stockholm Univ, S-10691 Stockholm, Sweden.
[Asman, B.; Belanger-Champagne, C.] Uppsala Univ, Uppsala, Sweden.
[Bertram, I.; Borissov, G.; Burdin, S.; Fox, H.; Love, P.; Ratoff, P. N.; Sopczak, A.; Williams, M. R. J.] Univ Lancaster, Lancaster LA1 4YB, England.
[Beuselinck, R.; Buszello, C. P.; Christoudias, T.; Davies, G.; Hays, J.; Jesik, R.; Jonsson, P.; Osman, N.; Scanlon, T.; Vint, P.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
[Harder, K.; Owen, M.; Peters, K.; Peters, Y.; Rich, P.; Schwanenberger, C.; Soeldner-Rembold, S.; Takahashi, M.; Vesterinen, M.; Wyatt, T. R.; Yang, W. -C.] Univ Manchester, Manchester M13 9PL, Lancs, England.
[Das, A.; Johns, K.; Varnes, E. W.] Univ Arizona, Tucson, AZ 85721 USA.
[Ellison, J.; Heinson, A. P.; Li, L.; Padilla, M.; Wimpenny, S. J.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Adams, T.; Askew, A.; Bandurin, D. V.; Blessing, S.; Carrera, E.; Hagopian, S.; Hoang, T.; Rangel, M. S.; Wahl, H. D.] Florida State Univ, Tallahassee, FL 32306 USA.
[Aoki, M.; Bagby, L.; Baldin, B.; Bartlett, J. F.; Bellantoni, L.; Bhat, P. C.; Boehnlein, A.; Bross, A.; Casey, B. C. K.; Cihangir, S.; Cooke, M.; Cooper, W. E.; Demarteau, M.; Denisov, D.; Desai, S.; Diehl, H. T.; Diesburg, M.; Elvira, V. D.; Fisk, H. E.; Fuess, S.; Ginther, G.; Greenlee, H.; Gruenendahl, S.; Gutierrez, G.; Illingworth, R.; Ito, A. S.; Johnson, M.; Jonckheere, A.; Juste, A.; Kasper, P. A.; Khalatyan, N.; Lee, W. M.; Li, Q. Z.; Lincoln, D.; Lipton, R.; Lyon, A. L.; Penning, B.; Podstavkov, V. M.; Rominsky, M.; Rubinov, P.; Sanghi, B.; Savage, G.; Sirotenko, V.; Stutte, L.; Verzocchi, M.; Weber, M.; Xie, Y.; Yamada, R.; Yasuda, T.; Ye, Z.; Youn, S. W.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Adams, M.; Gerber, C. E.; Strom, D.; Varelas, N.] Univ Illinois, Chicago, IL 60607 USA.
[Blazey, G.; Chakraborty, D.; Dyshkant, A.; Fortner, M.; Hedin, D.; Menezes, D.; Uzunyan, S.] No Illinois Univ, De Kalb, IL 60115 USA.
[Buchholz, D.; Kirby, M. H.; Schellman, H.; Yacoob, S.] Northwestern Univ, Evanston, IL 60208 USA.
[Evans, H.; Lammers, S.; Parua, N.; Price, D.; Van Kooten, R.; Zieminska, D.] Indiana Univ, Bloomington, IN 47405 USA.
[Parashar, N.] Purdue Univ Calumet, Hammond, IN 46323 USA.
[Chan, K. M.; Hildreth, M. D.; Osta, J.; Ruchti, R.; Smirnov, D.; Warchol, J.; Wayne, M.] Univ Notre Dame, Notre Dame, IN 46556 USA.
[Hauptman, J. M.; Lee, S. W.] Iowa State Univ, Ames, IA 50011 USA.
[Baringer, P.; Bean, A.; Chen, G.; Clutter, J.; McGivern, C. L.; Sekaric, J.; Wilson, G. W.] Univ Kansas, Lawrence, KS 66045 USA.
[Bolton, T. A.; Kaadze, K.; Maravin, Y.; Onoprienko, D.] Kansas State Univ, Manhattan, KS 66506 USA.
[Arov, M.; Greenwood, Z. D.; Sawyer, L.; Wobisch, M.] Louisiana Tech Univ, Ruston, LA 71272 USA.
[Eno, S.; Ferbel, T.; Wetstein, M.] Univ Maryland, College Pk, MD 20742 USA.
[Bose, T.] Boston Univ, Boston, MA 02215 USA.
[Alverson, G.; Barberis, E.; Facini, G.; Haley, J.; Hesketh, G.; Wood, D. R.] Northeastern Univ, Boston, MA 02115 USA.
[Alton, A.; Herner, K.; Neal, H. A.; Qian, J.; Xu, C.; Zhou, B.; Zhu, J.] Univ Michigan, Ann Arbor, MI 48109 USA.
[Abolins, M.; Benitez, J. A.; Brock, R.; Edmunds, D.; Fisher, W.; Geng, W.; Kraus, J.; Linnemann, J.; Piper, J.; Schwienhorst, R.] Michigan State Univ, E Lansing, MI 48824 USA.
[Melnitchouk, A.; Quinn, B.] Univ Mississippi, University, MS 38677 USA.
[Bloom, K.; Claes, D.; DeVaughan, K.; Dominguez, A.; Eads, M.; Johnston, D.; Katsanos, I.; Malik, S.; Snow, G. R.] Univ Nebraska, Lincoln, NE 68588 USA.
[Atramentov, O.; Duggan, D.; Gershtein, Y.] Rutgers State Univ, Piscataway, NJ 08855 USA.
[Gerbaudo, D.; Tully, C.] Princeton Univ, Princeton, NJ 08544 USA.
[Iashvili, I.; Jain, S.; Kharchilava, A.; Kumar, A.; Smith, K. J.] SUNY Buffalo, Buffalo, NY 14260 USA.
[Brooijmans, G.; Cooke, M. S.; Haas, A.; Parsons, J.; Tuts, P. M.; Zhou, N.; Zivkovic, L.] Columbia Univ, New York, NY 10027 USA.
[Demina, R.; Ferbel, T.; Garcia-Bellido, A.; Ginther, G.; Harel, A.; Petrillo, G.; Slattery, P.; Wang, M. H. L. S.; Zielinski, M.] Univ Rochester, Rochester, NY 14627 USA.
[Boline, D.; Chakrabarti, S.; Grannis, P. D.; Guo, F.; Guo, J.; Hobbs, J. D.; McCarthy, R.; Rijssenbeek, M.; Schamberger, R. D.; Strauss, E.; Tsybychev, D.] SUNY Stony Brook, Stony Brook, NY 11794 USA.
[Begel, M.; Evdokimov, A.; Gadfort, T.; Patwa, A.; Pleier, M. -A.; Protopopescu, S.; Snyder, S.; Yip, K.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Snow, J.] Langston Univ, Langston, OK 73050 USA.
[Abbott, B.; Gutierrez, P.; Hossain, S.; Severini, H.; Skubic, P.; Strauss, M.] Univ Oklahoma, Norman, OK 73019 USA.
[Hegab, H.; Khanov, A.; Rizatdinova, F.] Oklahoma State Univ, Stillwater, OK 74078 USA.
[Cho, D. K.; Cutts, D.; Ferapontov, A. V.; Heintz, U.; Jabeen, S.; Khatidze, D.; Landsberg, G.; Narain, M.; Pangilinan, M.; Parihar, V.; Partridge, R.; Yoo, H. D.] Brown Univ, Providence, RI 02912 USA.
[Brandt, A.; De, K.; Sosebee, M.; Spurlock, B.; White, A.; Yu, J.] Univ Texas Arlington, Arlington, TX 76019 USA.
[Kehoe, R.; Renkel, P.] So Methodist Univ, Dallas, TX 75275 USA.
[Chandra, A.; Corcoran, M.; Mackin, D.; Prewitt, M.] Rice Univ, Houston, TX 77005 USA.
[Buehler, M.; Hirosky, R.; Mulhearn, M.; Zelitch, S.] Univ Virginia, Charlottesville, VA 22901 USA.
[BackusMayes, J.; Burnett, T. H.; Dorland, T.; Goussiou, A.; Lubatti, H. J.; Schlobohm, S.; Watts, G.; Zhao, T.] Univ Washington, Seattle, WA 98195 USA.
RP Abazov, VM (reprint author), Joint Inst Nucl Res, Dubna, Russia.
RI Gerbaudo, Davide/J-4536-2012; Zhou, Ning/D-1123-2017; Li,
Liang/O-1107-2015; Wimpenny, Stephen/K-8848-2013; Fisher,
Wade/N-4491-2013; De, Kaushik/N-1953-2013; Ancu, Lucian
Stefan/F-1812-2010; Alves, Gilvan/C-4007-2013; Deliot,
Frederic/F-3321-2014; Sharyy, Viatcheslav/F-9057-2014; Lokajicek,
Milos/G-7800-2014; Kupco, Alexander/G-9713-2014; Kozelov,
Alexander/J-3812-2014; Christoudias, Theodoros/E-7305-2015; Guo,
Jun/O-5202-2015; Perfilov, Maxim/E-1064-2012; Gutierrez,
Phillip/C-1161-2011; Bolton, Tim/A-7951-2012; Boos, Eduard/D-9748-2012;
Santos, Angelo/K-5552-2012; Novaes, Sergio/D-3532-2012; Mercadante,
Pedro/K-1918-2012; Yip, Kin/D-6860-2013; bu, xuebing/D-1121-2012;
Merkin, Mikhail/D-6809-2012; Dudko, Lev/D-7127-2012
OI Gerbaudo, Davide/0000-0002-4463-0878; Li, Liang/0000-0001-6411-6107;
Wimpenny, Stephen/0000-0003-0505-4908; De, Kaushik/0000-0002-5647-4489;
Ancu, Lucian Stefan/0000-0001-5068-6723; Sharyy,
Viatcheslav/0000-0002-7161-2616; Christoudias,
Theodoros/0000-0001-9050-3880; Guo, Jun/0000-0001-8125-9433; Novaes,
Sergio/0000-0003-0471-8549; Yip, Kin/0000-0002-8576-4311; Dudko,
Lev/0000-0002-4462-3192
FU DOE (USA); NSF (USA); CEA (France); CNRS/IN2P3 (France); FASI (Russia);
Rosatom (Russia); RFBR (Russia); CNPq (Brazil); FAPERJ (Brazil); FAPESP
(Brazil); FUNDUNESP (Brazil); DAE (India); DST (India); Colciencias
(Colombia); CONACyT (Mexico); KRF (Korea); KOSEF (Korea); CONICET
(Argentina); UBACyT (Argentina)
FX We thank the staffs at Fermilab and collaborating institutions and
acknowledge support from the DOE and NSF (USA); CEA and CNRS/IN2P3
(France); FASI, Rosatom, and RFBR (Russia); CNPq, FAPERJ, FAPESP, and
FUNDUNESP (Brazil); DAE and DST (India); Colciencias (Colombia); CONACyT
(Mexico); KRF and KOSEF (Korea); CONICET and UBACyT (Argentina);
NR 46
TC 19
Z9 19
U1 1
U2 5
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 24
PY 2010
VL 105
IS 22
AR 221802
DI 10.1103/PhysRevLett.105.221802
PG 8
WC Physics, Multidisciplinary
SC Physics
GA 713IK
UT WOS:000286731000004
ER
PT J
AU Anzai, H
Ino, A
Kamo, T
Fujita, T
Arita, M
Namatame, H
Taniguchi, M
Fujimori, A
Shen, ZX
Ishikado, M
Uchida, S
AF Anzai, H.
Ino, A.
Kamo, T.
Fujita, T.
Arita, M.
Namatame, H.
Taniguchi, M.
Fujimori, A.
Shen, Z. -X.
Ishikado, M.
Uchida, S.
TI Energy-Dependent Enhancement of the Electron-Coupling Spectrum of the
Underdoped Bi2Sr2CaCu2O8+delta Superconductor
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID HIGH-TEMPERATURE SUPERCONDUCTORS; INSULATOR TRANSITIONS; STATE
AB We have determined the electron-coupling spectrum of superconducting Bi2Sr2CaCu2O8+delta from high-resolution angle-resolved photoemission spectra by two deconvolution-free robust methods. As hole concentration decreases, the coupling spectral weight at low energies less than or similar to 15 meV shows a twofold and nearly band-independent enhancement, while that around similar to 65 meV increases moderately, and that in greater than or similar to 130 meV decreases leading to a crossover of dominant coupling excitation between them. Our results suggest the competition among multiple screening effects, and provide important clues to the source of sufficiently strong low-energy coupling, lambda(LE) approximate to 1, in an underdoped system.
C1 [Anzai, H.; Ino, A.; Kamo, T.; Fujita, T.; Taniguchi, M.] Hiroshima Univ, Grad Sch Sci, Higashihiroshima 7398526, Japan.
[Arita, M.; Namatame, H.; Taniguchi, M.] Hiroshima Univ, Hiroshima Synchrotron Radiat Ctr, Higashihiroshima 7390046, Japan.
[Fujimori, A.; Ishikado, M.; Uchida, S.] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan.
[Shen, Z. -X.] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
[Shen, Z. -X.] Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA.
RP Anzai, H (reprint author), Hiroshima Univ, Grad Sch Sci, Higashihiroshima 7398526, Japan.
FU KAKENHI [20740199]; JSPS
FX This work was supported by KAKENHI (20740199). H. A. acknowledges
financial support from JSPS. The ARPES experiments were performed under
the approval of HRSC (Proposal No. 07-A-2).
NR 32
TC 22
Z9 22
U1 1
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 24
PY 2010
VL 105
IS 22
AR 227002
DI 10.1103/PhysRevLett.105.227002
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 713IK
UT WOS:000286731000020
PM 21231415
ER
PT J
AU Baghdasaryan, H
Weinstein, LB
Laget, JM
Adhikari, KP
Aghasyan, M
Amarian, M
Anghinolfi, M
Avakian, H
Ball, J
Battaglieri, M
Bedlinskiy, I
Bennett, RP
Berman, BL
Biselli, AS
Bookwalter, C
Briscoe, WJ
Brooks, WK
Bultmann, S
Burkert, VD
Carman, DS
Crede, V
D'Angelo, A
Daniel, A
Dashyan, N
De Vita, R
De Sanctis, E
Deur, A
Dey, B
Dickson, R
Djalali, C
Dodge, GE
Doughty, D
Dupre, R
Egiyan, H
El Alaoui, A
El Fassi, L
Eugenio, P
Fegan, S
Gabrielyan, MY
Gilfoyle, GP
Giovanetti, KL
Gohn, W
Gothe, RW
Griffioen, KA
Guidal, M
Guo, L
Gyurjyan, V
Hakobyan, H
Hanretty, C
Hyde, CE
Hicks, K
Holtrop, M
Ilieva, Y
Ireland, DG
Joo, K
Keller, D
Khandaker, M
Khetarpal, P
Kim, A
Kim, W
Klein, A
Klein, FJ
Konczykowski, P
Kubarovsky, V
Kuhn, SE
Kuleshov, SV
Kuznetsov, V
Kvaltine, ND
Livingston, K
Lu, HY
MacGregor, IJD
Markov, N
Mayer, M
McAndrew, J
McKinnon, B
Meyer, CA
Mikhailov, K
Mokeev, V
Moreno, B
Moriya, K
Morrison, B
Moutarde, H
Munevar, E
Nadel-Turonski, P
Nepali, C
Niccolai, S
Niculescu, G
Niculescu, I
Osipenko, M
Ostrovidov, AI
Paremuzyan, R
Park, K
Park, S
Pasyuk, E
Pereira, SA
Pisano, S
Pogorelko, O
Pozdniakov, S
Price, JW
Procureur, S
Protopopescu, D
Ricco, G
Ripani, M
Rosner, G
Rossi, P
Sabatie, F
Salgado, C
Schumacher, RA
Seraydaryan, H
Smith, GD
Sober, DI
Sokhan, D
Stepanyan, SS
Stepanyan, S
Stoler, P
Strauch, S
Taiuti, M
Tang, W
Taylor, CE
Tedeschi, DJ
Ungaro, M
Vineyard, MF
Voutier, E
Watts, DP
Weygand, DP
Wood, MH
Zhao, B
Zhao, ZW
AF Baghdasaryan, H.
Weinstein, L. B.
Laget, J. M.
Adhikari, K. P.
Aghasyan, M.
Amarian, M.
Anghinolfi, M.
Avakian, H.
Ball, J.
Battaglieri, M.
Bedlinskiy, I.
Bennett, R. P.
Berman, B. L.
Biselli, A. S.
Bookwalter, C.
Briscoe, W. J.
Brooks, W. K.
Bueltmann, S.
Burkert, V. D.
Carman, D. S.
Crede, V.
D'Angelo, A.
Daniel, A.
Dashyan, N.
De Vita, R.
De Sanctis, E.
Deur, A.
Dey, B.
Dickson, R.
Djalali, C.
Dodge, G. E.
Doughty, D.
Dupre, R.
Egiyan, H.
El Alaoui, A.
El Fassi, L.
Eugenio, P.
Fegan, S.
Gabrielyan, M. Y.
Gilfoyle, G. P.
Giovanetti, K. L.
Gohn, W.
Gothe, R. W.
Griffioen, K. A.
Guidal, M.
Guo, L.
Gyurjyan, V.
Hakobyan, H.
Hanretty, C.
Hyde, C. E.
Hicks, K.
Holtrop, M.
Ilieva, Y.
Ireland, D. G.
Joo, K.
Keller, D.
Khandaker, M.
Khetarpal, P.
Kim, A.
Kim, W.
Klein, A.
Klein, F. J.
Konczykowski, P.
Kubarovsky, V.
Kuhn, S. E.
Kuleshov, S. V.
Kuznetsov, V.
Kvaltine, N. D.
Livingston, K.
Lu, H. Y.
MacGregor, I. J. D.
Markov, N.
Mayer, M.
McAndrew, J.
McKinnon, B.
Meyer, C. A.
Mikhailov, K.
Mokeev, V.
Moreno, B.
Moriya, K.
Morrison, B.
Moutarde, H.
Munevar, E.
Nadel-Turonski, P.
Nepali, C.
Niccolai, S.
Niculescu, G.
Niculescu, I.
Osipenko, M.
Ostrovidov, A. I.
Paremuzyan, R.
Park, K.
Park, S.
Pasyuk, E.
Pereira, S. Anefalos
Pisano, S.
Pogorelko, O.
Pozdniakov, S.
Price, J. W.
Procureur, S.
Protopopescu, D.
Ricco, G.
Ripani, M.
Rosner, G.
Rossi, P.
Sabatie, F.
Salgado, C.
Schumacher, R. A.
Seraydaryan, H.
Smith, G. D.
Sober, D. I.
Sokhan, D.
Stepanyan, S. S.
Stepanyan, S.
Stoler, P.
Strauch, S.
Taiuti, M.
Tang, W.
Taylor, C. E.
Tedeschi, D. J.
Ungaro, M.
Vineyard, M. F.
Voutier, E.
Watts, D. P.
Weygand, D. P.
Wood, M. H.
Zhao, B.
Zhao, Z. W.
CA CLAS Collaboration
TI Tensor Correlations Measured in He-3(e, e ' pp)n
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID NUCLEI
AB We have measured the He-3(e, e' pp)n reaction at an incident energy of 4.7 GeV over a wide kinematic range. We identified spectator correlated pp and pn nucleon pairs by using kinematic cuts and measured their relative and total momentum distributions. This is the first measurement of the ratio of pp to pn pairs as a function of pair total momentum p(tot). For pair relative momenta between 0.3 and 0.5 GeV/c, the ratio is very small at low p(tot) and rises to approximately 0.5 at large p(tot). This shows the dominance of tensor over central correlations at this relative momentum.
C1 [Baghdasaryan, H.; Weinstein, L. B.; Adhikari, K. P.; Amarian, M.; Bennett, R. P.; Bueltmann, S.; Dodge, G. E.; Hyde, C. E.; Klein, A.; Kuhn, S. E.; Mayer, M.; Nepali, C.; Sabatie, F.; Seraydaryan, H.] Old Dominion Univ, Norfolk, VA 23529 USA.
[Dupre, R.; El Alaoui, A.; El Fassi, L.] Argonne Natl Lab, Argonne, IL 60441 USA.
[Morrison, B.; Pasyuk, E.] Arizona State Univ, Tempe, AZ 85287 USA.
[Price, J. W.] Calif State Univ Dominguez Hills, Carson, CA 90747 USA.
[Dey, B.; Dickson, R.; Lu, H. Y.; Meyer, C. A.; Moriya, K.; Schumacher, R. A.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Klein, F. J.; Sober, D. I.] Catholic Univ Amer, Washington, DC 20064 USA.
[Ball, J.; Konczykowski, P.; Moreno, B.; Moutarde, H.; Procureur, S.; Sabatie, F.] CEA, Ctr Saclay, Irfu Serv Phys Nucl, F-91191 Gif Sur Yvette, France.
[Doughty, D.] Christopher Newport Univ, Newport News, VA 23606 USA.
[Gohn, W.; Joo, K.; Markov, N.; Ungaro, M.] Univ Connecticut, Storrs, CT 06269 USA.
[McAndrew, J.; Watts, D. P.] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
[Biselli, A. S.] Fairfield Univ, Fairfield, CT 06824 USA.
[Gabrielyan, M. Y.; Guo, L.] Florida Int Univ, Miami, FL 33199 USA.
[Bookwalter, C.; Crede, V.; Eugenio, P.; Hanretty, C.; Ostrovidov, A. I.; Park, S.] Florida State Univ, Tallahassee, FL 32306 USA.
[Berman, B. L.; Briscoe, W. J.; Munevar, E.; Niculescu, I.] George Washington Univ, Washington, DC 20052 USA.
[Taylor, C. E.] Idaho State Univ, Pocatello, ID 83209 USA.
[Aghasyan, M.; Avakian, H.; De Sanctis, E.; Pereira, S. Anefalos; Rossi, P.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[Anghinolfi, M.; Battaglieri, M.; De Vita, R.; Osipenko, M.; Ricco, G.; Ripani, M.; Taiuti, M.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
[D'Angelo, A.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy.
[Guidal, M.; Niccolai, S.; Pisano, S.; Sokhan, D.] Inst Phys Nucl, F-91406 Orsay, France.
[Bedlinskiy, I.; Kuleshov, S. V.; Mikhailov, K.; Pogorelko, O.; Pozdniakov, S.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Giovanetti, K. L.; Niculescu, G.; Niculescu, I.] James Madison Univ, Harrisonburg, VA 22807 USA.
[Kim, A.; Kim, W.; Kuznetsov, V.; Park, K.; Stepanyan, S. S.] Kyungpook Natl Univ, Taegu 702701, South Korea.
[Voutier, E.] Univ Grenoble 1, CNRS, IN2P3, LPSC,INPG, Grenoble, France.
[Egiyan, H.; Holtrop, M.] Univ New Hampshire, Durham, NH 03824 USA.
[Khandaker, M.; Salgado, C.] Norfolk State Univ, Norfolk, VA 23504 USA.
[Daniel, A.; Hicks, K.; Keller, D.; Niculescu, G.; Tang, W.] Ohio Univ, Athens, OH 45701 USA.
[Biselli, A. S.; Khetarpal, P.; Stoler, P.] Rensselaer Polytech Inst, Troy, NY 12180 USA.
[Gilfoyle, G. P.; Vineyard, M. F.] Univ Richmond, Richmond, VA 23173 USA.
[D'Angelo, A.] Univ Roma Tor Vergata, I-00133 Rome, Italy.
[Mokeev, V.] Skobeltsyn Nucl Phys Inst, Moscow 119899, Russia.
[Djalali, C.; Gothe, R. W.; Ilieva, Y.; Strauch, S.; Tedeschi, D. J.] Univ S Carolina, Columbia, SC 29208 USA.
[Laget, J. M.; Avakian, H.; Brooks, W. K.; Burkert, V. D.; Carman, D. S.; Deur, A.; Doughty, D.; Gyurjyan, V.; Klein, F. J.; Kubarovsky, V.; Mokeev, V.; Nadel-Turonski, P.; Park, K.; Pasyuk, E.; Stepanyan, S.; Weygand, D. P.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
[Vineyard, M. F.] Union Coll, Schenectady, NY 12308 USA.
[Brooks, W. K.; Hakobyan, H.; Kuleshov, S. V.] Univ Tecn Federico Santa Maria, Valparaiso, Chile.
RP Weinstein, LB (reprint author), Old Dominion Univ, Norfolk, VA 23529 USA.
EM weinstein@odu.edu
RI Sabatie, Franck/K-9066-2015; Ireland, David/E-8618-2010; MacGregor,
Ian/D-4072-2011; Lu, Haiyun/B-4083-2012; Protopopescu, Dan/D-5645-2012;
Zhao, Bo/J-6819-2012; Brooks, William/C-8636-2013; Kuleshov,
Sergey/D-9940-2013; Schumacher, Reinhard/K-6455-2013; D'Angelo,
Annalisa/A-2439-2012; Meyer, Curtis/L-3488-2014; El Alaoui,
Ahmed/B-4638-2015; Osipenko, Mikhail/N-8292-2015;
OI Sabatie, Franck/0000-0001-7031-3975; Ireland, David/0000-0001-7713-7011;
Zhao, Bo/0000-0003-3171-5335; Brooks, William/0000-0001-6161-3570;
Kuleshov, Sergey/0000-0002-3065-326X; Schumacher,
Reinhard/0000-0002-3860-1827; D'Angelo, Annalisa/0000-0003-3050-4907;
Meyer, Curtis/0000-0001-7599-3973; Osipenko,
Mikhail/0000-0001-9618-3013; Hyde, Charles/0000-0001-7282-8120
FU Italian Istituto Nazionale di Fisica Nucleare; Chilean CONICYT; French
Centre National de la Recherche Scientifique and Commissariat a
l'Energie Atomique; United Kingdom Science and Technology Facilities
Council (STFC); U.S. Department of Energy and National Science
Foundation; National Research Foundation of Korea; United States
Department of Energy [DE-AC05-060R23177]
FX We acknowledge the outstanding efforts of the staff of the Accelerator
and Physics Divisions (especially the CLAS target group) at Jefferson
Lab that made this experiment possible. This work was supported in part
by the Italian Istituto Nazionale di Fisica Nucleare, the Chilean
CONICYT, the French Centre National de la Recherche Scientifique and
Commissariat a l'Energie Atomique, the United Kingdom Science and
Technology Facilities Council (STFC), the U.S. Department of Energy and
National Science Foundation, and the National Research Foundation of
Korea. Jefferson Science Associates, LLC, operates the Thomas Jefferson
National Accelerator Facility for the United States Department of Energy
under Contract No. DE-AC05-060R23177.
NR 27
TC 14
Z9 15
U1 0
U2 4
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 24
PY 2010
VL 105
IS 22
AR 222501
DI 10.1103/PhysRevLett.105.222501
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 713IK
UT WOS:000286731000006
PM 21231381
ER
PT J
AU Kazakov, SY
Shchelkunov, SV
Yakovlev, VP
Kanareykin, A
Nenasheva, E
Hirshfield, JL
AF Kazakov, S. Yu
Shchelkunov, S. V.
Yakovlev, V. P.
Kanareykin, A.
Nenasheva, E.
Hirshfield, J. L.
TI Fast ferroelectric phase shifters for energy recovery linacs
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
AB Fast phase shifters are described that use a novel barium strontium titanate ceramic that can rapidly change its dielectric constant as an external bias voltage is changed. These phase shifters promise to reduce by similar to 10 times the power requirements for the rf source needed to drive an energy recovery linac (ERL). Such phase shifters will be coupled with superconducting radiofrequency cavities so as to tune them to compensate for phase instabilities, whether beam-driven or those caused by microphonics. The most promising design is presented, which was successfully cold tested and demonstrated a switching speed of similar to 30 ns for 77 deg, corresponding to <0.5 ns per deg of rf phase. Other crucial issues (losses, phase shift values, etc.) are discussed.
C1 [Kazakov, S. Yu; Hirshfield, J. L.] Omega P Inc, New Haven, CT 06510 USA.
[Kazakov, S. Yu; Yakovlev, V. P.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Shchelkunov, S. V.; Hirshfield, J. L.] Yale Univ, Beam Phys Lab, New Haven, CT 06511 USA.
[Kanareykin, A.] Euclid Techlabs LLC, Solon, OH 44139 USA.
[Nenasheva, E.] Ceramics Ltd, St Petersburg 194223, Russia.
RP Kazakov, SY (reprint author), Omega P Inc, 258 Bradley St, New Haven, CT 06510 USA.
EM sergey.shchelkunov@gmail.com
FU Office of High Energy Physics, U.S. Department of Energy
FX This work was supported by the Office of High Energy Physics, U.S.
Department of Energy. We also acknowledge the help of Timergali
Khabiboulline (FNAL), Harald Hahn (BNL), and E. M. Choi (formerly of
BNL).
NR 20
TC 3
Z9 3
U1 1
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-4402
J9 PHYS REV SPEC TOP-AC
JI Phys. Rev. Spec. Top.-Accel. Beams
PD NOV 24
PY 2010
VL 13
IS 11
AR 113501
DI 10.1103/PhysRevSTAB.13.113501
PG 8
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 688AR
UT WOS:000284820800001
ER
PT J
AU Kuchenreuther, JM
Grady-Smith, CS
Bingham, AS
George, SJ
Cramer, SP
Swartz, JR
AF Kuchenreuther, Jon M.
Grady-Smith, Celestine S.
Bingham, Alyssa S.
George, Simon J.
Cramer, Stephen P.
Swartz, James R.
TI High-Yield Expression of Heterologous [FeFe] Hydrogenases in Escherichia
coli
SO PLOS ONE
LA English
DT Article
ID CLOSTRIDIUM-PASTEURIANUM; ONLY HYDROGENASE; ACTIVE-SITE;
DESULFOVIBRIO-DESULFURICANS; CHLAMYDOMONAS-REINHARDTII;
THERMOTOGA-MARITIMA; LIGHT SENSITIVITY; IRON-HYDROGENASE; MATURATION;
CLUSTER
AB Background: The realization of hydrogenase-based technologies for renewable H-2 production is presently limited by the need for scalable and high-yielding methods to supply active hydrogenases and their required maturases.
Principal Findings: In this report, we describe an improved Escherichia coli-based expression system capable of producing 8-30 mg of purified, active [FeFe] hydrogenase per liter of culture, volumetric yields at least 10-fold greater than previously reported. Specifically, we overcame two problems associated with other in vivo production methods: low protein yields and ineffective hydrogenase maturation. The addition of glucose to the growth medium enhances anaerobic metabolism and growth during hydrogenase expression, which substantially increases total yields. Also, we combine iron and cysteine supplementation with the use of an E. coli strain upregulated for iron-sulfur cluster protein accumulation. These measures dramatically improve in vivo hydrogenase activation. Two hydrogenases, HydA1 from Chlamydomonas reinhardtii and HydA (CpI) from Clostridium pasteurianum, were produced with this improved system and subsequently purified. Biophysical characterization and FTIR spectroscopic analysis of these enzymes indicate that they harbor the H-cluster and catalyze H-2 evolution with rates comparable to those of enzymes isolated from their respective native organisms.
Significance: The production system we describe will facilitate basic hydrogenase investigations as well as the development of new technologies that utilize these prolific H-2-producing enzymes. These methods can also be extended for producing and studying a variety of oxygen-sensitive iron-sulfur proteins as well as other proteins requiring anoxic environments.
C1 [Kuchenreuther, Jon M.; Bingham, Alyssa S.; Swartz, James R.] Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA.
[Grady-Smith, Celestine S.; George, Simon J.; Cramer, Stephen P.] Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA.
[Grady-Smith, Celestine S.; George, Simon J.; Cramer, Stephen P.] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
[Swartz, James R.] Stanford Univ, Dept Bioengn, Stanford, CA 94305 USA.
RP Kuchenreuther, JM (reprint author), Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA.
EM jswartz@stanford.edu
FU United States Department of Energy BioEnergy Science
FX This work was funded by the United States Department of Energy BioEnergy
Science Program. The funders had no role in study design, data
collection and analysis, decision to publish, or preparation of the
manuscript.
NR 44
TC 55
Z9 56
U1 2
U2 27
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD NOV 24
PY 2010
VL 5
IS 11
AR e15491
DI 10.1371/journal.pone.0015491
PG 7
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 684TK
UT WOS:000284572000030
PM 21124800
ER
PT J
AU Kirkil, G
Constantinescu, G
AF Kirkil, Gokhan
Constantinescu, George
TI Flow and turbulence structure around an in-stream rectangular cylinder
with scour hole
SO WATER RESOURCES RESEARCH
LA English
DT Article
ID DETACHED EDDY SIMULATION; HORSESHOE VORTEX; SPHERE; PIERS; LES;
TRANSPORT; MODEL; BODY
AB Most of the erosion around obstacles present in alluvial streams takes place after the formation of a scour hole of sufficiently large dimensions to stabilize the large-scale oscillations of the horseshoe vortex (HV) system. The present paper uses eddy resolving techniques to reveal the unsteady dynamics of the coherent structures present in the flow field around an in-stream vertical cylinder (e. g., bridge pier) with a large scour hole at a channel Reynolds number defined with the channel depth and the bulk channel velocity of 2.4 x 10(5). The cylinder has a rectangular section and is placed perpendicular to the incoming flow. The geometry of the scour hole is obtained from an experiment conducted as part of the present work. The mechanisms driving the bed erosion during the advanced stages of the scour process around the vertical plate are discussed. Simulation results demonstrate the critical role played by these large-scale turbulent eddies and their interactions in driving the local scour. The paper analyzes the changes in the flow and turbulence structure with respect to the initial stages of the scour process (flat bed conditions) for a cylinder of identical shape and orientation. Results show the wake loses its undular shape due to suppression of the antisymmetrical shedding of the roller vortices. Also, the nature of the interactions between the necklace vortices of the HV system and the eddies present inside the detached shear layers (DSLs) changes as the scour process evolves. This means that information on the vortical structure of the flow at the initiation of the scour process, or during its initial stages, are insufficient to understand the local scour mechanisms. The paper also examines the effect of the shape of the obstruction on the dynamics of the vortical eddies and how it affects the bed erosion processes during the advanced stages of the local scour. In particular, the paper provides an explanation for the observed increase in the maximum scour depth for bed-mounted cylinders of rectangular section compared to cylinders of same width but of circular section. This increase is explained by the larger coherence of the HV system, the increased regularity of the interactions between the legs of the necklace vortices and the eddies shed in the DSLs, and the stronger coherence of the wake eddies, during both the initial and the later stages of the local scour process, for cases in which the obstruction has sharp edges that fix the separation point on the in-stream obstacle at all flow depths (e.g., rectangular cylinder).
C1 [Constantinescu, George] Univ Iowa, Stanley Hydraul Lab, Dept Civil & Environm Engn, IIHR Hydrosci & Engn, Iowa City, IA 52242 USA.
RP Kirkil, G (reprint author), Lawrence Livermore Natl Lab, Atmospher Earth & Energy Div, POB 808,L-103, Livermore, CA 94551 USA.
EM sconstan@engineering.uiowa.edu
RI constantinescu, george/A-8896-2008; Kirkil, Gokhan/D-8481-2014
OI constantinescu, george/0000-0001-7060-8378;
FU U.S. Department of Energy [DE-AC52-07NA27344]
FX The authors would like to thank Robert Ettema for his advice on various
aspects of this research and the National Center for High Performance
Computing (NCHC) in Taiwan, in particular W.F. Tsai for providing the
computational resources needed to perform some of the simulations as
part of the collaboration program between NCHC and IIHR-Hydroscience and
Engineering. The first author would also like to acknowledge the
Lawrence Livermore National Laboratory. Lawrence Livermore National
Laboratory is managed by Lawrence Livermore National Security, LLC for
the U.S. Department of Energy under contract DE-AC52-07NA27344.
NR 39
TC 19
Z9 19
U1 1
U2 12
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0043-1397
EI 1944-7973
J9 WATER RESOUR RES
JI Water Resour. Res.
PD NOV 24
PY 2010
VL 46
AR W11549
DI 10.1029/2010WR009336
PG 20
WC Environmental Sciences; Limnology; Water Resources
SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water
Resources
GA 686QU
UT WOS:000284711600009
ER
PT J
AU Ashino, T
Varadarajan, S
Urao, N
Chen, GF
Wang, H
Huo, YQ
Finney, L
Vogt, S
Kohno, T
McKinney, RD
Ushio-Fukai, M
Fukai, T
AF Ashino, Takashi
Varadarajan, Sudhahar
Urao, Norifumi
Chen, Gin-Fu
Wang, Huan
Huo, Yuqing
Finney, Lydia
Vogt, Stefan
Kohno, Takashi
McKinney, Ronald D.
Ushio-Fukai, Masuko
Fukai, Tohru
TI IQGAP1, a Rac1 Binding Scaffold Protein, Interacts with Copper
Transporter ATP7A: Role in ATP7A-mediated PDGF-induced VSMC Migration
and Neointimal Formation
SO CIRCULATION
LA English
DT Meeting Abstract
DE Growth factors; Arteriosclerosis; Signal transduction; Vascular disease;
Smooth muscle
C1 Univ Illinois, Chicago, IL USA.
Univ Minnesota, Minneapolis, MN USA.
Argonne Natl Lab, Argonne, IL 60439 USA.
NR 0
TC 0
Z9 0
U1 0
U2 2
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0009-7322
J9 CIRCULATION
JI Circulation
PD NOV 23
PY 2010
VL 122
IS 21
SU S
MA A18886
PG 2
WC Cardiac & Cardiovascular Systems; Peripheral Vascular Disease
SC Cardiovascular System & Cardiology
GA V21UD
UT WOS:000208231602967
ER
PT J
AU Matsui, H
Koike, M
Kondo, Y
Takegawa, N
Fast, JD
Poschl, U
Garland, RM
Andreae, MO
Wiedensohler, A
Sugimoto, N
Zhu, T
AF Matsui, H.
Koike, M.
Kondo, Y.
Takegawa, N.
Fast, J. D.
Poeschl, U.
Garland, R. M.
Andreae, M. O.
Wiedensohler, A.
Sugimoto, N.
Zhu, T.
TI Spatial and temporal variations of aerosols around Beijing in summer
2006: 2. Local and column aerosol optical properties
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
ID ASIAN DUST; ORGANIC AEROSOLS; AIR-POLLUTION; EAST-ASIA; MODEL;
EMISSIONS; CHINA; MASS; PERFORMANCE; VALIDATION
AB Model calculations were conducted using the Weather Research and Forecasting model coupled with chemistry (WRF-chem) for the region around Beijing, China, in the summer of 2006, when the CAREBeijing-2006 intensive campaign was conducted. In this paper, we interpret aerosol optical properties in terms of aerosol mass concentrations and their chemical compositions by linking model calculations with measurements. The model calculations generally captured the observed variability of various surface and column aerosol optical parameters in and around Beijing. At the surface, the spatial and temporal variations of aerosol absorption and scattering coefficients corresponded well to those of elemental carbon and sulfate mass concentrations, respectively, and were controlled by local-scale (<100 km and <24 hours) and regional-scale (<500 km and <3 days) emissions, respectively. The contribution of secondary aerosols and their water uptake increased with altitude within the planetary boundary layer. This variation led to a considerable increase in column aerosol optical depth and was responsible for the differences in regional and temporal variations between surface and column aerosol optical properties around Beijing. These processes are expected to be common in other megacity regions as well. Model calculations, however, underestimated or overestimated the absolute levels of aerosol optical properties in and around Beijing by up to 60%. Sensitivity studies showed that these discrepancies were mostly due to the uncertainties in aerosol mixing state and aerosol density (affecting mass extinction efficiency) in the model calculations. Good agreement with measurements is achieved when these aerosol properties are accurately predicted or assumed; however, significant bias can result when these properties are inadequately treated, even if total aerosol mass concentrations are reproduced well in the model calculations.
C1 [Matsui, H.; Kondo, Y.; Takegawa, N.] Univ Tokyo, Adv Sci & Technol Res Ctr, Meguro Ku, Tokyo 1538904, Japan.
[Koike, M.] Univ Tokyo, Dept Earth & Planetary Sci, Grad Sch Sci, Bunkyo Ku, Tokyo 1130033, Japan.
[Fast, J. D.] Pacific NW Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA.
[Poeschl, U.; Garland, R. M.; Andreae, M. O.] Max Planck Inst Chem, Biogeochem Dept, D-55020 Mainz, Germany.
[Wiedensohler, A.] Leibniz Inst Tropospher Res, D-04318 Leipzig, Germany.
[Sugimoto, N.] Natl Inst Environm Studies, Tsukuba, Ibaraki 3058506, Japan.
[Zhu, T.] Peking Univ, State Key Joint Lab Environm Simulat & Pollut Con, Coll Environm Sci & Engn, Beijing 100871, Peoples R China.
RP Matsui, H (reprint author), Univ Tokyo, Adv Sci & Technol Res Ctr, Meguro Ku, 4-6-1 Komaba, Tokyo 1538904, Japan.
EM matsui@atmos.rcast.u-tokyo.ac.jp; koike@eps.s.u-tokyo.ac.jp;
y.kondo@atmos.rcast.u-tokyo.ac.jp; takegawa@atmos.rcast.u-tokyo.ac.jp;
jerome.fast@pnl.gov; u.poschl@mpic.de; rehema123@gmail.com;
m.andreae@mpic.de; ali@tropos.de; nsugimot@nies.go.jp; tzhu@pku.edu.cn
RI Poschl, Ulrich/A-6263-2010; Koike, Makoto/F-4366-2011; ZHU,
TONG/H-6501-2011; Kondo, Yutaka/D-1459-2012; Wiedensohler,
Alfred/D-1223-2013; Sugimoto, Nobuo/C-5189-2015; Andreae,
Meinrat/B-1068-2008;
OI Poschl, Ulrich/0000-0003-1412-3557; Sugimoto, Nobuo/0000-0002-0545-1316;
Andreae, Meinrat/0000-0003-1968-7925; Garland,
Rebecca/0000-0002-1855-8622
FU Beijing Council of Science and Technology [HB200504-6, HB200504-2];
Ministry of Education, Culture, Sports, Science, and Technology (MEXT)
in Japan; University of Tokyo; Max Planck Society of Germany
FX We are indebted to all of the CAREBeijing-2006 campaign participants for
their cooperation and support. Special thanks are due to the staff and
students of Peking University for leading and carrying out this project
funded by the Beijing Council of Science and Technology (HB200504-6,
HB200504-2). The authors would like to thank W. I. Gustafson Jr. at PNNL
for providing useful comments on WRF-chem model calculations and J. C.
Barnard at PNNL for his comments regarding this work. This study was
supported by the Ministry of Education, Culture, Sports, Science, and
Technology (MEXT) in Japan. This study was also supported in part by the
Alliance for Global Sustainability (AGS) project, University of Tokyo,
and by the Max Planck Society of Germany. This study was conducted as a
part of the Mega-Cities: Asia Task under the framework of the
International Global Atmospheric Chemistry (IGAC) project.
NR 64
TC 11
Z9 11
U1 0
U2 16
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
EI 2169-8996
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD NOV 23
PY 2010
VL 115
AR D22207
DI 10.1029/2010JD013895
PG 20
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 686OA
UT WOS:000284704400004
ER
PT J
AU Sui, L
Huang, L
Podsiadlo, P
Kotov, NA
Kieffer, J
AF Sui, L.
Huang, L.
Podsiadlo, P.
Kotov, N. A.
Kieffer, J.
TI Brillouin Light Scattering Investigation of the Mechanical Properties of
Layer-by-Layer Assembled Cellulose Nanocrystal Films
SO MACROMOLECULES
LA English
DT Article
ID ELASTIC-CONSTANTS; WHOLE SET; COMPOSITES; FIBERS; NANOSCALE; FUTURE;
FORM
AB Composite thin films containing cellulose nanocrystal (cellN) polyanions embedded between either poly(diallyldimethylammonium chloride) (PDDA) or chitosan were fabricated using the layer by layer (LBL) deposition technique The in plane and out of plane elastic constants of the composites were measured using Brillouin light scattering as a function of film thickness and cellulose content Compared to the pure cast polymer films the addition of celIN raises the elastic constants within the growth plane by a factor of 2 and 3 for [chitosan/cellN] and [PDDA/cellN] films respectively, while in the growth direction the elastic constant increases by 50% for [PDDA/cellN] and not at all for [chitosan/cellN] With increasing amounts of celIN in the films the stiffness Increases in the growth plane at a higher rate than in the growth direction These trends reflect the contribution of the cellulose nanocrystals within and cross layers to load transmission The results are interpreted in terms of processes that occur during film deposition and the resulting spatial arrangements of the nanocrystals
C1 [Sui, L.; Kotov, N. A.; Kieffer, J.] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA.
[Huang, L.] Dept Mat Sci & Engn, Troy, NY 12180 USA.
[Podsiadlo, P.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Kotov, N. A.] Univ Michigan, Dept Chem Engn, Ann Arbor, MI 48109 USA.
RP Kieffer, J (reprint author), Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA.
RI Huang, Liping/B-4412-2008;
OI Kotov, Nicholas/0000-0002-6864-5804
FU AFOSR [FA9550 05 1 0143]
FX The authors thank Prof Joerg Lahann for the use of their elliposmeter
This project is supported by AFOSR Grant FA9550 05 1 0143
NR 35
TC 19
Z9 20
U1 4
U2 42
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0024-9297
J9 MACROMOLECULES
JI Macromolecules
PD NOV 23
PY 2010
VL 43
IS 22
BP 9541
EP 9548
DI 10.1021/ma1016488
PG 8
WC Polymer Science
SC Polymer Science
GA 679QX
UT WOS:000284177000042
ER
PT J
AU Shakeripour, H
Tanatar, MA
Petrovic, C
Taillefer, L
AF Shakeripour, H.
Tanatar, M. A.
Petrovic, C.
Taillefer, Louis
TI Universal heat conduction and nodal gap structure of the heavy-fermion
superconductor CeIrIn5
SO PHYSICAL REVIEW B
LA English
DT Article
ID THERMAL-CONDUCTIVITY; UPT3
AB The effect of impurity scattering on the thermal conductivity kappa of the heavy-fermion superconductor CeIrIn5 was studied for a current parallel (J parallel to c) and perpendicular (J parallel to a) to the tetragonal c axis. For J parallel to a, adding La impurities does not change the residual linear term kappa(0a)/T, showing that heat conduction in the basal plane is universal, compelling evidence that the superconducting gap vanishes along a symmetry-imposed line. By contrast, for J parallel to c, La impurities greatly enhance the residual linear term kappa(0c)/T. This is strong evidence that the line of nodes lies within the basal plane, a gap structure which is inconsistent with the d-wave symmetry proposed for the isostructural superconductor CeCoIn5. Different symmetries in the two materials could explain why the phase diagram of this heavy-fermion family consists of two separate superconducting domes. We also compare our data on CeIrIn5 to corresponding data on the heavy-fermion superconductor UPt3, where no universal conduction is observed.
C1 [Shakeripour, H.; Tanatar, M. A.; Taillefer, Louis] Univ Sherbrooke, Dept Phys, Sherbrooke, PQ J1K 2R1, Canada.
[Shakeripour, H.; Tanatar, M. A.; Taillefer, Louis] Univ Sherbrooke, RQMP, Sherbrooke, PQ J1K 2R1, Canada.
[Petrovic, C.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Petrovic, C.; Taillefer, Louis] Canadian Inst Adv Res, Toronto, ON, Canada.
RP Shakeripour, H (reprint author), Univ Sherbrooke, Dept Phys, Sherbrooke, PQ J1K 2R1, Canada.
EM louis.taillefer@usherbrooke.ca
RI Petrovic, Cedomir/A-8789-2009
OI Petrovic, Cedomir/0000-0001-6063-1881
FU NSERC; FQRNT; FCI; Canada Research Chairs Program; Brookhaven Science
Associates [DE-Ac02-98CH10886]
FX We thank I. Vekhter and M. J. Graf for helpful discussions and J. Corbin
for his assitance with the experiments. L.T. acknowledges support from
the Canadian Institute for Advanced Research and funding from NSERC,
FQRNT, FCI, and the Canada Research Chairs Program. The work was
partially carried out at the Brookhaven National Laboratory, which is
operated for the U.S. Department of Energy by Brookhaven Science
Associates (Grant No. DE-Ac02-98CH10886).
NR 28
TC 8
Z9 8
U1 1
U2 13
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 23
PY 2010
VL 82
IS 18
AR 184531
DI 10.1103/PhysRevB.82.184531
PG 5
WC Physics, Condensed Matter
SC Physics
GA 684CX
UT WOS:000284525900011
ER
PT J
AU Hartley, DJ
Janssens, RVF
Riedinger, LL
Riley, MA
Wang, X
Aguilar, A
Carpenter, MP
Chiara, CJ
Chowdhury, P
Darby, IG
Garg, U
Ijaz, QA
Kondev, FG
Lakshmi, S
Lauritsen, T
Ma, WC
McCutchan, EA
Mukhopadhyay, S
Seyfried, EP
Shirwadkar, U
Stefanescu, I
Tandel, SK
Vanhoy, JR
Zhu, S
AF Hartley, D. J.
Janssens, R. V. F.
Riedinger, L. L.
Riley, M. A.
Wang, X.
Aguilar, A.
Carpenter, M. P.
Chiara, C. J.
Chowdhury, P.
Darby, I. G.
Garg, U.
Ijaz, Q. A.
Kondev, F. G.
Lakshmi, S.
Lauritsen, T.
Ma, W. C.
McCutchan, E. A.
Mukhopadhyay, S.
Seyfried, E. P.
Shirwadkar, U.
Stefanescu, I.
Tandel, S. K.
Vanhoy, J. R.
Zhu, S.
TI Band crossings in Ta-166
SO PHYSICAL REVIEW C
LA English
DT Article
ID HIGH-SPIN STATES; COINCIDENCE DATA; NUCLEI
AB High-spin states in the odd-odd nucleus Ta-166 are investigated through the 5n channel of the V-51 + Sn-120 reaction. Four new bands are observed and linked into the previous level scheme. Configurations for the bands are proposed, based on measured alignments and B(M1)/B(E2) transition strength ratios.
C1 [Hartley, D. J.; Seyfried, E. P.; Vanhoy, J. R.] USN Acad, Dept Phys, Annapolis, MD 21402 USA.
[Janssens, R. V. F.; Carpenter, M. P.; Chiara, C. J.; Lauritsen, T.; McCutchan, E. A.; Stefanescu, I.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Riedinger, L. L.; Darby, I. G.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Riley, M. A.; Wang, X.; Aguilar, A.] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA.
[Chiara, C. J.; Kondev, F. G.] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA.
[Chiara, C. J.; Stefanescu, I.] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.
[Chowdhury, P.; Lakshmi, S.; Shirwadkar, U.; Tandel, S. K.] Univ Massachusetts Lowell, Dept Phys, Lowell, MA 01854 USA.
[Garg, U.; Mukhopadhyay, S.] Univ Notre Dame, Dept Phys, South Bend, IN 46556 USA.
[Ijaz, Q. A.; Ma, W. C.] Mississippi State Univ, Dept Phys, Mississippi State, MS 39762 USA.
RP Hartley, DJ (reprint author), USN Acad, Dept Phys, Annapolis, MD 21402 USA.
RI Soundara Pandian, Lakshmi/C-8107-2013; Carpenter, Michael/E-4287-2015
OI Soundara Pandian, Lakshmi/0000-0003-3099-1039; Carpenter,
Michael/0000-0002-3237-5734
FU National Science Foundation [PHY-0854815, PHY-0754674, PHY07-58100]; US
Department of Energy, Office of Nuclear Physics [DE-AC02-06CH11357,
DE-FG02-94ER40848, DE-FG02-96ER40983]
FX The authors thank the ANL operations staff at Gammasphere and gratefully
acknowledge the efforts of J. P. Greene for target preparation. We thank
D. C. Radford and H. Q. Jin for their software support. This work is
funded by the National Science Foundation under Grants No. PHY-0854815
(USNA), No. PHY-0754674 (FSU), and No. PHY07-58100 (ND), as well as by
the US Department of Energy, Office of Nuclear Physics, under Contracts
No. DE-AC02-06CH11357 (ANL), No. DE-FG02-94ER40848 (UML), and No.
DE-FG02-96ER40983 (UT).
NR 17
TC 4
Z9 4
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD NOV 23
PY 2010
VL 82
IS 5
AR 057302
DI 10.1103/PhysRevC.82.057302
PG 4
WC Physics, Nuclear
SC Physics
GA 713JA
UT WOS:000286733100005
ER
PT J
AU Barger, V
Gao, Y
McCaskey, M
Shaughnessy, G
AF Barger, Vernon
Gao, Yu
McCaskey, Mathew
Shaughnessy, Gabe
TI Light Higgs boson, light dark matter, and gamma rays
SO PHYSICAL REVIEW D
LA English
DT Article
ID SEARCHES; SCALAR; LEP; DETECTOR; MODEL
AB A light Higgs boson is preferred by M-W and m(t) measurements. A complex scalar singlet addition to the standard model allows a better fit to these measurements through a new light singlet dominated state. It then predicts a light dark matter (DM) particle that can explain the signals of DM scattering from nuclei in the CoGeNT and DAMA/LIBRA experiments. Annihilations of this DM in the galactic halo, AA -> b (b) over bar, c (c) over bar, tau(+)tau(-), lead to gamma rays that naturally improve a fit to the Fermi Large Area Telescope data in the central galactic regions. The associated light neutral Higgs boson may also be discovered at the Large Hadron Collider.
C1 [Barger, Vernon; Gao, Yu; McCaskey, Mathew] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
[Shaughnessy, Gabe] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA.
[Shaughnessy, Gabe] Argonne Natl Lab, HEP Div, Argonne, IL 60439 USA.
RP Barger, V (reprint author), Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
RI lebert, thomas/H-4032-2011
FU U.S. Department of Energy Division of High Energy Physics
[DE-FG02-95ER40896, DE-FG02-05ER41361, DE-FG02-08ER41531,
DE-FG02-91ER40684, DE-AC02-06CH11357]; Wisconsin Alumni Research
Foundation; National Science Foundation [PHY-0503584]
FX We thank D. Hooper for helpful information about Fermi data. This work
was supported in part by the U.S. Department of Energy Division of High
Energy Physics under Grants Nos. DE-FG02-95ER40896, DE-FG02-05ER41361,
DE-FG02-08ER41531, DE-FG02-91ER40684, and Contract No.
DE-AC02-06CH11357, by the Wisconsin Alumni Research Foundation, and by
the National Science Foundation under Grant No. PHY-0503584.
NR 62
TC 29
Z9 29
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
EI 1550-2368
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 23
PY 2010
VL 82
IS 9
AR 095011
DI 10.1103/PhysRevD.82.095011
PG 9
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 684DR
UT WOS:000284528500004
ER
PT J
AU ter Veen, S
Buitink, S
Falcke, H
James, CW
Mevius, M
Scholten, O
Singh, K
Stappers, B
de Vries, KD
AF ter Veen, S.
Buitink, S.
Falcke, H.
James, C. W.
Mevius, M.
Scholten, O.
Singh, K.
Stappers, B.
de Vries, K. D.
TI Limit on the ultrahigh-energy cosmic-ray flux with the Westerbork
synthesis radio telescope
SO PHYSICAL REVIEW D
LA English
DT Article
ID AIR-SHOWERS; CERENKOV RADIATION; EMISSION; NEUTRINOS; ELECTRONS;
SPECTRUM; PULSES; CHARGE
AB A particle cascade (shower) in a dielectric, for example, as initiated by an ultra-high-energy cosmic ray, will have an excess of electrons which will emit coherent Cerenkov radiation, known as the Askaryan effect. In this work we study the case in which such a particle shower occurs in a medium just below its surface. We show, for the first time, that the radiation transmitted through the surface is independent of the depth of the shower below the surface when observed from far away, apart from trivial absorption effects. As a direct application we use the recent results of the NuMoon project, where a limit on the neutrino flux for energies above 10(22) eV was set using the Westerbork Synthesis Radio Telescope by measuring pulsed radio emission from the Moon, to set a limit on the flux of ultra-high-energy cosmic rays.
C1 [ter Veen, S.; Falcke, H.; James, C. W.] Radboud Univ Nijmegen, IMAPP, Dept Astrophys, NL-6500 GL Nijmegen, Netherlands.
[Buitink, S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Falcke, H.] ASTRON, NL-7990 AA Dwingeloo, Netherlands.
[Mevius, M.; Scholten, O.; Singh, K.; de Vries, K. D.] Univ Groningen, Kernfys Versneller Inst, NL-9747 AA Groningen, Netherlands.
[Singh, K.] Vrije Univ Brussel, Dienst ELEM, B-1050 Brussels, Belgium.
[Stappers, B.] Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England.
RP ter Veen, S (reprint author), Radboud Univ Nijmegen, IMAPP, Dept Astrophys, NL-6500 GL Nijmegen, Netherlands.
EM s.terveen@astro.ru.nl
RI Falcke, Heino/H-5262-2012; James, Clancy/G-9178-2015;
OI Falcke, Heino/0000-0002-2526-6724; James, Clancy/0000-0002-6437-6176;
Buitink, Stijn/0000-0002-6177-497X
FU Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO); European
Research Council
FX This work was performed as part of the research programs of the
Stichting voor Fundamenteel Onderzoek der Materie (FOM), with financial
support from the Nederlandse Organisatie voor Wetenschappelijk Onderzoek
(NWO), and an advanced grant (Falcke) of the European Research Council.
This paper is partly based on the master's thesis of S. ter Veen [36].
NR 43
TC 13
Z9 13
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 23
PY 2010
VL 82
IS 10
AR 103014
DI 10.1103/PhysRevD.82.103014
PG 8
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 684DY
UT WOS:000284529500001
ER
PT J
AU He, J
Borisevich, A
Kalinin, SV
Pennycook, SJ
Pantelides, ST
AF He, Jun
Borisevich, Albina
Kalinin, Sergei V.
Pennycook, Stephen J.
Pantelides, Sokrates T.
TI Control of Octahedral Tilts and Magnetic Properties of Perovskite Oxide
Heterostructures by Substrate Symmetry
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID MISFIT RELAXATION MECHANISMS; MORPHOTROPIC PHASE-BOUNDARY; FERROELECTRIC
THIN-FILMS; DOMAIN CONFIGURATIONS; MANGANITES; INTERFACES; EXCHANGE;
DIAGRAM; BIFEO3
AB Perovskite transition-metal oxides are networks of corner-sharing octahedra whose tilts and distortions are known to affect their electronic and magnetic properties. We report calculations on a model interfacial structure which avoids chemical influences and show that the symmetry mismatch imposes an interfacial layer with distortion modes that do not exist in either bulk material, creating new interface properties driven by symmetry alone. Depending on the resistance of the octahedra to deformation, the interface layer can be as small as one unit cell or extend deep into the thin film.
C1 [He, Jun; Borisevich, Albina; Pennycook, Stephen J.; Pantelides, Sokrates T.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
[Kalinin, Sergei V.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
[He, Jun; Pennycook, Stephen J.; Pantelides, Sokrates T.] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA.
RP He, J (reprint author), Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RI He, Jun/F-6264-2011; Kalinin, Sergei/I-9096-2012; Borisevich,
Albina/B-1624-2009
OI Kalinin, Sergei/0000-0001-5354-6152; Borisevich,
Albina/0000-0002-3953-8460
FU Division of Materials Sciences and Engineering, Office of Basic Energy
Sciences, U.S. Department of Energy; DOE [DE-FG02-09ER46554]; Vanderbilt
University
FX This research was sponsored by the Division of Materials Sciences and
Engineering, Office of Basic Energy Sciences, U.S. Department of Energy,
by DOE Grant No. DE-FG02-09ER46554, and by the McMinn Endowment at
Vanderbilt University. Computations were performed at the National
Energy Research Scientific Computing Center.
NR 38
TC 87
Z9 87
U1 10
U2 109
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 23
PY 2010
VL 105
IS 22
AR 227203
DI 10.1103/PhysRevLett.105.227203
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 684EQ
UT WOS:000284532900027
PM 21231419
ER
PT J
AU Oikawa, A
Joshi, HJ
Rennie, EA
Ebert, B
Manisseri, C
Heazlewood, JL
Scheller, HV
AF Oikawa, Ai
Joshi, Hiren J.
Rennie, Emilie A.
Ebert, Berit
Manisseri, Chithra
Heazlewood, Joshua L.
Scheller, Henrik Vibe
TI An Integrative Approach to the Identification of Arabidopsis and Rice
Genes Involved in Xylan and Secondary Wall Development
SO PLOS ONE
LA English
DT Article
ID CARBOHYDRATE-ACTIVE ENZYMES; GENOME-WIDE ANALYSIS; REDUCING END-GROUPS;
CELL-WALL; SUBCELLULAR-LOCALIZATION; GLUCURONOXYLAN BIOSYNTHESIS;
ARABINOGALACTAN PROTEINS; ENDOPLASMIC-RETICULUM; TRANSCRIPTION FACTORS;
TARGETING SEQUENCES
AB Xylans constitute the major non-cellulosic component of plant biomass. Xylan biosynthesis is particularly pronounced in cells with secondary walls, implying that the synthesis network consists of a set of highly expressed genes in such cells. To improve the understanding of xylan biosynthesis, we performed a comparative analysis of co-expression networks between Arabidopsis and rice as reference species with different wall types. Many co-expressed genes were represented by orthologs in both species, which implies common biological features, while some gene families were only found in one of the species, and therefore likely to be related to differences in their cell walls. To predict the subcellular location of the identified proteins, we developed a new method, PFANTOM ((p) under bar lant protein (fa) under bar mily i (n) under bar formation-based predic (to) under barr for endo (m) under bar embrane), which was shown to perform better for proteins in the endomembrane system than other available prediction methods. Based on the combined approach of co-expression and predicted cellular localization, we propose a model for Arabidopsis and rice xylan synthesis in the Golgi apparatus and signaling from plasma membrane to nucleus for secondary cell wall differentiation. As an experimental validation of the model, we show that an Arabidopsis mutant in the PGSIP1 gene encoding one of the Golgi localized candidate proteins has a highly decreased content of glucuronic acid in secondary cell walls and substantially reduced xylan glucuronosyltransferase activity.
C1 [Oikawa, Ai; Joshi, Hiren J.; Rennie, Emilie A.; Ebert, Berit; Manisseri, Chithra; Heazlewood, Joshua L.; Scheller, Henrik Vibe] Joint BioEnergy Inst, Feedstocks Div, Emeryville, CA USA.
[Oikawa, Ai; Joshi, Hiren J.; Ebert, Berit; Manisseri, Chithra; Heazlewood, Joshua L.; Scheller, Henrik Vibe] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
[Rennie, Emilie A.; Scheller, Henrik Vibe] Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94720 USA.
RP Oikawa, A (reprint author), Joint BioEnergy Inst, Feedstocks Div, Emeryville, CA USA.
EM HScheller@lbl.gov
RI Heazlewood, Joshua/A-2554-2008; Scheller, Henrik/A-8106-2008; Ebert,
Berit/F-1856-2016
OI Heazlewood, Joshua/0000-0002-2080-3826; Scheller,
Henrik/0000-0002-6702-3560; Ebert, Berit/0000-0002-6914-5473
FU US Department of Energy, Office of Science, Office of Biological and
Environmental Research [DE-AC02-05CH11231]; Lawrence Berkeley National
Laboratory; Japanese Yamada Science Foundation; National Institutes of
Health (NIH)
FX This work was supported by the US Department of Energy, Office of
Science, Office of Biological and Environmental Research, through
contract DE-AC02-05CH11231 with Lawrence Berkeley National Laboratory.
A.O. was additionally supported by funds from Japanese Yamada Science
Foundation, and E.A.R. was supported by a National Institutes of Health
(NIH) Pre-doctoral Training Grant. The funders had no role in study
design, data collection and analysis, decision to publish, or
preparation of the manuscript.
NR 82
TC 47
Z9 59
U1 1
U2 20
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD NOV 23
PY 2010
VL 5
IS 11
AR e15481
DI 10.1371/journal.pone.0015481
PG 16
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 684DM
UT WOS:000284527900020
PM 21124849
ER
PT J
AU Chen, JS
Hubbard, SS
Gaines, D
Korneev, V
Baker, G
Watson, D
AF Chen, Jinsong
Hubbard, Susan S.
Gaines, David
Korneev, Valeri
Baker, Gregory
Watson, David
TI Stochastic estimation of aquifer geometry using seismic refraction data
with borehole depth constraints
SO WATER RESOURCES RESEARCH
LA English
DT Article
ID HYDRAULIC CONDUCTIVITY; TOMOGRAPHY; DIFFERENCE; PARAMETERS; TRANSPORT
AB We develop a Bayesian model to invert surface seismic refraction data with depth constraints from boreholes for characterization of aquifer geometry and apply it to seismic and borehole data sets collected at the contaminated Oak Ridge National Laboratory site in Tennessee. Rather than the traditional approach of first inverting the seismic arrival times for seismic velocity and then using that information to aid in the spatial interpolation of wellbore data, we jointly invert seismic first arrival time data and wellbore-based information, such as depths of key lithological boundaries. We use a staggered-grid finite difference algorithm with second-order accuracy in time and fourth-order accuracy in space to model seismic full waveforms and use an automated method to pick the first arrival times. We use Markov Chain Monte Carlo methods to draw many samples from the joint posterior probability distribution, on which we can estimate the key interfaces and their associated uncertainty as a function of horizontal location and depth. We test the developed method on both synthetic and field case studies. The synthetic studies show that the developed method is effective at rigorous incorporation of multiscale data and the Bayesian inversion reduces uncertainty in estimates of aquifer zonation. Applications of the approach to field data, including two surface seismic profiles located 620 m apart from each other, reveal the presence of a low-velocity subsurface zone that is laterally persistent. This geophysically defined feature is aligned with the plume axis, suggesting it may serve as an important regional preferential flow pathway.
C1 [Chen, Jinsong; Hubbard, Susan S.; Korneev, Valeri] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA.
[Gaines, David; Baker, Gregory] Univ Tennessee, Dept Earth & Planetary Sci, Knoxville, TN 37996 USA.
[Watson, David] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Chen, JS (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA.
EM jchen@lbl.gov
RI Chen, Jinsong/A-1374-2009; Hubbard, Susan/E-9508-2010; Watson,
David/C-3256-2016
OI Watson, David/0000-0002-4972-4136
FU U.S. Department of Energy
FX Funding for this study was provided by the U.S. Department of Energy,
Biological and Environmental Research Program as part of the Oak Ridge
National Laboratory Integrated Field Research Center project. We wish to
thank Jacob Sheehan from Battelle for providing seismic refraction data
along the S3 survey profile and for offering constructive comments on
this study. We thank David F. Aldridge from Sandia National Laboratory
who suggested and demonstrated a validity of using the Delta function
source waveform for numerical modeling, Guping Tang from the Oak Ridge
National Laboratory for providing the figure of nitrate plume
distribution, and three anonymous reviewers and the Editors for helpful
and insightful suggestions.
NR 39
TC 9
Z9 9
U1 1
U2 5
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0043-1397
EI 1944-7973
J9 WATER RESOUR RES
JI Water Resour. Res.
PD NOV 23
PY 2010
VL 46
AR W11539
DI 10.1029/2009WR008715
PG 16
WC Environmental Sciences; Limnology; Water Resources
SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water
Resources
GA 686QS
UT WOS:000284711400004
ER
PT J
AU Grate, JW
Zhang, CY
Wietsma, TW
Warner, MG
Anheier, NC
Bernacki, BE
Orr, G
Oostrom, M
AF Grate, Jay W.
Zhang, Changyong
Wietsma, Thomas W.
Warner, Marvin G.
Anheier, Norman C., Jr.
Bernacki, Bruce E.
Orr, Galya
Oostrom, Mart
TI A note on the visualization of wetting film structures and a nonwetting
immiscible fluid in a pore network micromodel using a solvatochromic dye
SO WATER RESOURCES RESEARCH
LA English
DT Article
ID NILE RED; SCALE; TRANSPORT; MIXTURES; REMOVAL; QUALITY; SENSORS;
LIQUIDS; PROBE
AB Micromodel technologies are a useful and important method to study pore-scale fluidic processes, using two-dimensional formats that enable direct visualization of processes within patterned microstructures. In this technical note, Nile red, 9-diethylamino-5H-benzo [alpha]phenoxazine-5-one, is demonstrated as a single dye whose solvatochromism enables selective visualization of two immiscible liquid fluids in a pore network micromodel containing a homogeneous array of pillars. Nile red dissolves in, and partitions between, hexadecane as a nonwetting fluid and polyethylene glycol 200 (PEG200) as a hydrophilic wetting fluid in a micromodel with silicon oxide surfaces. Both the absorption spectra and fluorescence emission spectra are sensitive to the solvent environment, such that the two phases can be distinguished by the observed color or the fluorescence emission band. Bright field, epifluorescence, confocal fluorescence, and hyperspectral microscopy methods were used to image the micromodel after displacing PEG200 in the model with hexadecane. Using a single solvatochromic dye facilitates direct visualization and identification of both phases anywhere in the micromodel on the basis of color and also enables collection of complementary fluorescent images for each phase. The use of Nile red with these imaging methods facilitates selective visualization of phase identity at specific locations; the interfaces between the two immiscible liquid phases; wetting behavior of the wetting phase within the pore network; and retention of the wetting phase as thin films around pillars and as bridges across the pore throats. The pillars and wetting phase bridges create a network of obstacles defining a tortuous flow path for the displacing nonwetting phase.
C1 [Grate, Jay W.; Zhang, Changyong; Wietsma, Thomas W.; Warner, Marvin G.; Anheier, Norman C., Jr.; Bernacki, Bruce E.; Orr, Galya; Oostrom, Mart] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Grate, JW (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA.
EM jwgrate@pnl.gov
RI Zhang, Changyong/A-8012-2013
FU PNNL
FX The authors thank Jonathon W. Pittman for help with the Nile red
spectroscopy. A portion of this research was carried out in the William
R. Wiley Environmental Molecular Sciences Laboratory, a United States
Department of Energy (DOE) scientific user facility operated for the DOE
by the Pacific Northwest National Laboratory (PNNL). PNNL is a
multiprogram national laboratory operated for the DOE by Battelle
Memorial Institute. The Laboratory Directed Research and Development
Program at PNNL supported this research.
NR 33
TC 12
Z9 12
U1 1
U2 21
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0043-1397
J9 WATER RESOUR RES
JI Water Resour. Res.
PD NOV 23
PY 2010
VL 46
AR W11602
DI 10.1029/2010WR009419
PG 6
WC Environmental Sciences; Limnology; Water Resources
SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water
Resources
GA 686QS
UT WOS:000284711400010
ER
PT J
AU Vineis, CJ
Shakouri, A
Majumdar, A
Kanatzidis, MG
AF Vineis, Christopher J.
Shakouri, Ali
Majumdar, Arun
Kanatzidis, Mercouri G.
TI Nanostructured Thermoelectrics: Big Efficiency Gains from Small Features
SO ADVANCED MATERIALS
LA English
DT Review
ID MULTILAYER THERMIONIC REFRIGERATION; QUANTUM-DOT SUPERLATTICES;
THERMAL-CONDUCTIVITY; SEEBECK COEFFICIENT; SILICON NANOWIRES; WELL
STRUCTURES; POWER FACTOR; HIGH FIGURE; MERIT; PERFORMANCE
AB The field of thermoelectrics has progressed enormously and is now growing steadily because of recently demonstrated advances and strong global demand for cost-effective, pollution-free forms of energy conversion. Rapid growth and exciting innovative breakthroughs in the field over the last 10-15 years have occurred in large part due to a new fundamental focus on nanostructured materials. As a result of the greatly increased research activity in this field, a substantial amount of new data-especially related to materials-have been generated. Although this has led to stronger insight and understanding of thermoelectric principles, it has also resulted in misconceptions and misunderstanding about some fundamental issues. This article sets out to summarize and clarify the current understanding in this field; explain the underpinnings of breakthroughs reported in the past decade; and provide a critical review of various concepts and experimental results related to nanostructured thermoelectrics. We believe recent achievements in the field augur great possibilities for thermoelectric power generation and cooling, and discuss future paths forward that build on these exciting nanostructuring concepts.
C1 [Kanatzidis, Mercouri G.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
[Kanatzidis, Mercouri G.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Vineis, Christopher J.] SiOnyx Inc, Beverly, MA 01801 USA.
[Shakouri, Ali] Univ Calif Santa Cruz, Dept Elect Engn, Santa Cruz, CA 95064 USA.
[Majumdar, Arun] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA.
[Majumdar, Arun] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
RP Kanatzidis, MG (reprint author), Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA.
EM shakouri@ucsc.edu; m-kanatzidis@northwestern.edu
FU ONR; DARPA
FX Financial support from ONR and the ONR MURI program (Dr M. Gross Program
Manager) and DARPA NMP program (Dr. K. Latt Program Manager) are
gratefully acknowledged. We thank Mr. J. Ravichandran (UC Berkeley) for
providing Figure 1, Prof. Z. Bian (UCSC) for the calculations in Figure
2, and Dr. M. Bulsara (MIT) for providing the TEM image of Figure 3b. In
addition, we greatly appreciate critical reviews of this manuscript by
Dr. M. Gross, Dr. T. Sands, Dr. J. Bowers, and Dr. D. Morelli.
NR 95
TC 590
Z9 593
U1 63
U2 587
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 0935-9648
J9 ADV MATER
JI Adv. Mater.
PD NOV 22
PY 2010
VL 22
IS 36
BP 3970
EP 3980
DI 10.1002/adma.201000839
PG 11
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 666HE
UT WOS:000283104600001
PM 20661949
ER
PT J
AU Sutter, PW
Albrecht, PM
Sutter, EA
AF Sutter, P. W.
Albrecht, P. M.
Sutter, E. A.
TI Graphene growth on epitaxial Ru thin films on sapphire
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID LAYER; ELECTRONICS; SURFACES; RU(0001)
AB Single crystalline Ru(0001) thin films epitaxially grown on sapphire (0001) substrates were used as sacrificial metal templates for the synthesis of high-quality graphene with uniform monolayer thickness and full surface coverage. Removal of the metal template by etching transferred monolayer graphene with good crystal quality onto the insulating sapphire support. Our findings demonstrate epitaxial Ru(0001) films on sapphire (0001) as a substrate for the scalable synthesis of high-quality graphene for applications. (C) 2010 American Institute of Physics. [doi:10.1063/1.3518490]
C1 [Sutter, P. W.; Albrecht, P. M.; Sutter, E. A.] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
RP Sutter, PW (reprint author), Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
EM psutter@bnl.gov
FU U.S. Department of Energy [DE-AC02-98CH1-886]
FX We thank Kim Kisslinger for technical assistance. Work performed under
the auspices of the U.S. Department of Energy under Contract No.
DE-AC02-98CH1-886.
NR 27
TC 56
Z9 56
U1 6
U2 34
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD NOV 22
PY 2010
VL 97
IS 21
AR 213101
DI 10.1063/1.3518490
PG 3
WC Physics, Applied
SC Physics
GA 685GX
UT WOS:000284618300041
ER
PT J
AU Troparevsky, MC
Sabau, AS
Lupini, AR
Zhang, ZY
AF Troparevsky, M. Claudia
Sabau, Adrian S.
Lupini, Andrew R.
Zhang, Zhenyu
TI Transfer-matrix formalism for the calculation of optical response in
multilayer systems: from coherent to incoherent interference
SO OPTICS EXPRESS
LA English
DT Article
ID LIGHT-ABSORPTION; SOLAR-CELLS; FILMS; ENHANCEMENT; INTERFACES
AB We present a novel way to account for partially coherent interference in multilayer systems via the transfer-matrix method. The novel feature is that there is no need to use modified Fresnel coefficients or the square of their amplitudes to work in the incoherent limit. The transition from coherent to incoherent interference is achieved by introducing a random phase of increasing intensity in the propagating media. This random phase can simulate the effect of defects or impurities. This method provides a general way of dealing with optical multilayer systems, in which coherent and incoherent interference are treated on equal footing. (C) 2010 Optical Society of America
C1 [Troparevsky, M. Claudia; Zhang, Zhenyu] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Troparevsky, M. Claudia; Sabau, Adrian S.; Lupini, Andrew R.; Zhang, Zhenyu] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Zhang, Zhenyu] Univ Sci & Technol China, ICQD, Hefei 230026, Anhui, Peoples R China.
RP Troparevsky, MC (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
EM mtropare@utk.edu
RI Sabau, Adrian/B-9571-2008
OI Sabau, Adrian/0000-0003-3088-6474
FU U.S. Department of Energy [DE-AC05-00OR22725]; NSF [DMR-0906025]; DOE
(the Division of Material Sciences and Engineering, Office of Basic
Sciences, and BES-CMSN); DOE (Office of Energy Efficiency and Renewable
Energy) [DE-AC05-00OR22725]
FX This manuscript has been authored by UT-Battelle, LLC, under Contract
No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United
States Government retains and the publisher, by accepting the article
for publication, acknowledges that the United States Government retains
a non-exclusive, paid-up, irrevocable, world-wide license to publish or
reproduce the published form of this manuscript, or allow others to do
so, for United States Government purposes. This work was supported in
part by NSF (Grant No. DMR-0906025), DOE (the Division of Material
Sciences and Engineering, Office of Basic Sciences, and BES-CMSN), and
DOE (Office of Energy Efficiency and Renewable Energy, Industrial
Technologies Program) under contract DE-AC05-00OR22725.
NR 20
TC 46
Z9 46
U1 5
U2 23
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD NOV 22
PY 2010
VL 18
IS 24
BP 24715
EP 24721
DI 10.1364/OE.18.024715
PG 7
WC Optics
SC Optics
GA 698IF
UT WOS:000285586800098
PM 21164818
ER
PT J
AU Kim, JM
Cho, IH
Lee, SY
Kang, HC
Conley, R
Liu, CA
Macrander, AT
Noh, DY
AF Kim, Jae Myung
Cho, In Hwa
Lee, Su Yong
Kang, Hyon Chol
Conley, Ray
Liu, Chian
Macrander, Albert T.
Noh, Do Young
TI Observation of the Talbot effect using broadband hard x-ray beam
SO OPTICS EXPRESS
LA English
DT Article
ID GRATINGS
AB We demonstrated the Talbot effect using a broadband hard x-ray beam (Delta lambda/lambda similar to 1). The exit wave-field of the x-ray beam passing through a grating with a sub micro-meter scale period was successfully replicated and recorded at effective Talbot distance, Z(T). The period was reduced to half at Z(T)/4 and 3/4Z(T), and the phase reversal was observed at Z(T)/2. The propagating wave-field recorded on photoresists was consistent with a simulated result. (c) 2010 Optical Society of America
C1 [Kim, Jae Myung; Cho, In Hwa; Lee, Su Yong; Noh, Do Young] Gwangju Inst Sci & Technol, Sch Mat Sci & Engn, Kwangju 500712, South Korea.
[Kang, Hyon Chol] Chosun Univ, Dept Adv Mat Engn, Kwangju 501759, South Korea.
[Kang, Hyon Chol] Chosun Univ, Educ Ctr Mould Technol Adv Mat & Parts BK21, Kwangju 501759, South Korea.
[Conley, Ray] Brookhaven Natl Lab, Natl Synchrotron Light Source 2, Upton, NY 11973 USA.
[Liu, Chian; Macrander, Albert T.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Kim, JM (reprint author), Gwangju Inst Sci & Technol, Sch Mat Sci & Engn, Kwangju 500712, South Korea.
EM dynoh@gist.ac.kr
RI Conley, Ray/C-2622-2013
FU National Core Research Center [R15-2008-006-00000-0]; National Research
Foundation (NRF) of Korea [2010-0023604]; GIST; Department of Energy,
Office of Basic Energy Science [DE-AC-02-06CH11357, DE-AC-02-98CH10886]
FX This work was supported by National Core Research Center grant (No.
R15-2008-006-00000-0) and general research program (No. 2010-0023604)
provided by National Research Foundation (NRF) of Korea. We also
acknowledge the support from GIST through, 'Photonics 2010'. project.
Work at Argonne was supported by the Department of Energy, Office of
Basic Energy Science under contract DE-AC-02-06CH11357. Work at
Brookhaven was supported by the Department of Energy, Office of Basic
Energy Sciences under contract DE-AC-02-98CH10886.
NR 16
TC 16
Z9 16
U1 2
U2 6
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD NOV 22
PY 2010
VL 18
IS 24
BP 24975
EP 24982
DI 10.1364/OE.18.024975
PG 8
WC Optics
SC Optics
GA 698IF
UT WOS:000285586800108
PM 21164842
ER
PT J
AU Liu, YM
Wang, S
Park, YS
Yin, XB
Zhang, X
AF Liu, Yongmin
Wang, Sheng
Park, Yong-Shik
Yin, Xiaobo
Zhang, Xiang
TI Fluorescence enhancement by a two-dimensional dielectric annular Bragg
resonant cavity
SO OPTICS EXPRESS
LA English
DT Article
ID GRATINGS; LIGHT; EXTRACTION; SURFACE
AB We show that photons can be efficiently extracted from fluorescent molecules, utilizing the strongly enhanced local field of a two-dimensional dielectric annular Bragg resonant cavity. Due to the diffraction and constructive interference together with the annular focusing, the periodic ring structure converts the normal incident light into planar guided modes and forms a hot spot at the center of the structure. Theoretically, the field can be enhanced more than 40 times, which leads to the averaged 20-fold enhancement of the fluorescence signal observed in experiments. Compared with fluorescence enhancement by plasmonic structures, this dielectric approach does not suffer from pronounced quenching that often occurs near metallic structures. These results not only can be applied as ultrasensitive sensors for various biological systems, but also have broad potential applications, such as optical trapping and fluorescent microscopy. (C) 2010 Optical Society of America
C1 [Liu, Yongmin; Wang, Sheng; Park, Yong-Shik; Yin, Xiaobo; Zhang, Xiang] Univ Calif Berkeley, NSF, NSEC, Berkeley, CA 94720 USA.
[Yin, Xiaobo; Zhang, Xiang] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Liu, YM (reprint author), Univ Calif Berkeley, NSF, NSEC, 3112 Etcheverry Hall, Berkeley, CA 94720 USA.
EM xiang@berkeley.edu
RI Liu, Yongmin/F-5322-2010; Zhang, Xiang/F-6905-2011; Wang,
Sheng/F-4095-2012
FU National Science Foundation (NSF) Nanoscale Science and Engineering
Center [CMMI-0751621]
FX This work was supported by the National Science Foundation (NSF)
Nanoscale Science and Engineering Center (CMMI-0751621)
NR 27
TC 6
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U1 4
U2 24
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD NOV 22
PY 2010
VL 18
IS 24
BP 25029
EP 25034
DI 10.1364/OE.18.025029
PG 6
WC Optics
SC Optics
GA 698IF
UT WOS:000285586800096
PM 21164848
ER
PT J
AU Mocella, V
Dardano, P
Rendina, I
Cabrini, S
AF Mocella, Vito
Dardano, Principia
Rendina, Ivo
Cabrini, Stefano
TI An extraordinary directive radiation based on optical antimatter at near
infrared
SO OPTICS EXPRESS
LA English
DT Article
ID NEGATIVE REFRACTION
AB In this paper we discuss and experimentally demonstrate that in a quasi- zero-average-refractive-index (QZAI) metamaterial, in correspondence of a divergent source in near infrared (lambda = 1.55 mu m) the light scattered out is extremely directive (Delta theta(out) = 0.06 degrees), coupling with diffraction order of the alternating complementary media grating. With a high degree of accuracy the measurements prove also the excellent vertical confinement of the beam even in the air region of the metamaterial, in absence of any simple vertical confinement mechanism. This extremely sensitive device works on a large contact area and open news perspective to integrated spectroscopy. (C) 2010 Optical Society of America
C1 [Mocella, Vito; Dardano, Principia; Rendina, Ivo] CNR IMM Unita Napoli, I-80131 Naples, Italy.
[Cabrini, Stefano] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA.
RP Mocella, V (reprint author), CNR IMM Unita Napoli, Via P Castellino 111, I-80131 Naples, Italy.
EM vito.mocella@na.imm.cnr.it
RI rendina, ivo/F-8266-2013;
OI rendina, ivo/0000-0002-3861-373X; Mocella, Vito/0000-0001-8793-0486
NR 16
TC 23
Z9 23
U1 0
U2 5
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD NOV 22
PY 2010
VL 18
IS 24
BP 25068
EP 25074
DI 10.1364/OE.18.025068
PG 7
WC Optics
SC Optics
GA 698IF
UT WOS:000285586800063
PM 21164852
ER
PT J
AU Nam, SH
Zhou, JF
Taylor, AJ
Efimov, A
AF Nam, Sung Hyun
Zhou, Jiangfeng
Taylor, Antoinette J.
Efimov, Anatoly
TI Dirac dynamics in one-dimensional graphenelike plasmonic crystals:
pseudo-spin, chirality, and diffraction anomaly
SO OPTICS EXPRESS
LA English
DT Article
AB We introduce a new class of plasmonic crystals possessing graphene-like internal symmetries and Dirac-type spectrum in k-space. We study dynamics of surface plasmon polaritons supported in the plasmonic crystals by employing the formalism of Dirac dynamics for relativistic quantum particles. Through an analogy with graphene, we introduce a concept of pseudo-spin and chirality to indicate built-in symmetry of the plasmonic crystals near Dirac point. The surface plasmon polaritons with different pseudo-spin states are shown to split in the crystals into two beams, analogous to spin Hall effect. (C) 2010 Optical Society of America
C1 [Nam, Sung Hyun; Zhou, Jiangfeng; Taylor, Antoinette J.; Efimov, Anatoly] Los Alamos Natl Lab, Mat Phys & Applicat Div, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA.
RP Nam, SH (reprint author), Los Alamos Natl Lab, Mat Phys & Applicat Div, Ctr Integrated Nanotechnol, POB 1663, Los Alamos, NM 87545 USA.
EM sunghnam@gmail.com
RI Zhou, Jiangfeng/D-4292-2009;
OI Zhou, Jiangfeng/0000-0002-6958-3342; Efimov, Anatoly/0000-0002-5559-4147
FU National Nuclear Security Administration of the U.S. Department of
Energy [DE-AC52-6NA25396]
FX This work was performed, in part, at the Center for Integrated
Nanotechnologies, a U.S. Department of Energy, Office of Basic Energy
Sciences user facility. Los Alamos National Laboratory, an affirmative
action equal opportunity employer, is operated by Los Alamos National
Security, LLC, for the National Nuclear Security Administration of the
U.S. Department of Energy under contract DE-AC52-6NA25396.
NR 20
TC 5
Z9 5
U1 0
U2 10
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD NOV 22
PY 2010
VL 18
IS 24
BP 25329
EP 25338
DI 10.1364/OE.18.025329
PG 10
WC Optics
SC Optics
GA 698IF
UT WOS:000285586800084
PM 21164881
ER
PT J
AU Contreras-Reyes, AM
Guerout, R
Neto, PAM
Dalvit, DAR
Lambrecht, A
Reynaud, S
AF Contreras-Reyes, Ana M.
Guerout, Romain
Maia Neto, Paulo A.
Dalvit, Diego A. R.
Lambrecht, Astrid
Reynaud, Serge
TI Casimir-Polder interaction between an atom and a dielectric grating
SO PHYSICAL REVIEW A
LA English
DT Article
ID FORCE
AB We develop the scattering approach to calculate the exact dispersive Casimir-Polder potential between a ground-state atom and a rectangular grating. Our formalism allows, in principle, for arbitrary values of the grating amplitude and period, and of the atom-grating distance. We compute numerically the potential for a Rb atom on top of a Si grating and compare the results with the potential for a flat surface taken at the local atom-surface distance (proximity force approximation). Except for very short separation distances, the potential is nearly sinusoidal along the direction transverse to the grooves.
C1 [Contreras-Reyes, Ana M.; Maia Neto, Paulo A.] Univ Fed Rio de Janeiro, Inst Fis, Caixa Postal 68528, BR-21941972 Rio De Janeiro, Brazil.
[Guerout, Romain; Lambrecht, Astrid; Reynaud, Serge] UPMC, ENS, CNRS, Lab Kastler Brossel, F-75252 Paris 05, France.
[Dalvit, Diego A. R.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Contreras-Reyes, AM (reprint author), Univ Fed Rio de Janeiro, Inst Fis, Caixa Postal 68528, BR-21941972 Rio De Janeiro, Brazil.
RI Fluidos Complexos, INCT/H-9172-2013; Reynaud, Serge/J-8061-2014;
Lambrecht, Astrid/K-1208-2014
OI Reynaud, Serge/0000-0002-1494-696X; Lambrecht,
Astrid/0000-0002-5193-1222
FU CAPES-COFECUB; CNPq; DARPA; CASIMIR; FAPERJ-CNE
FX We would like to thank Francois Impens and Valery Marachevsky for
discussions. This work was partially supported by CAPES-COFECUB, CNPq,
DARPA, ESF Research Networking Programme CASIMIR, and FAPERJ-CNE.
NR 40
TC 22
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U1 3
U2 15
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9926
EI 2469-9934
J9 PHYS REV A
JI Phys. Rev. A
PD NOV 22
PY 2010
VL 82
IS 5
AR 052517
DI 10.1103/PhysRevA.82.052517
PG 6
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 683GL
UT WOS:000284460400003
ER
PT J
AU Hong, T
Stock, C
Cabrera, I
Broholm, C
Qiu, Y
Leao, JB
Poulton, SJ
Copley, JRD
AF Hong, Tao
Stock, C.
Cabrera, I.
Broholm, C.
Qiu, Y.
Leao, J. B.
Poulton, S. J.
Copley, J. R. D.
TI Neutron scattering study of a quasi-two-dimensional spin-1/2 dimer
system: Piperazinium hexachlorodicuprate under hydrostatic pressure
SO PHYSICAL REVIEW B
LA English
DT Article
ID BOSE-EINSTEIN CONDENSATION; TLCUCL3; STATE
AB We report inelastic neutron scattering study of a quasi-two-dimensional S=1/2 dimer system piperazinium hexachlorodicuprate under hydrostatic pressure. The spin gap Delta becomes softened with the increase of the hydrostatic pressure up to P=9.0 kbar. The observed threefold degenerate triplet excitation at P=6.0 kbar is consistent with the theoretical prediction and the bandwidth of the dispersion relation is unaffected within the experimental uncertainty. At P=9.0 kbar the spin gap is reduced to Delta=0.55 meV from Delta=1.0 meV at ambient pressure.
C1 [Hong, Tao] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
[Stock, C.; Cabrera, I.; Broholm, C.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA.
[Stock, C.; Cabrera, I.; Broholm, C.; Qiu, Y.; Leao, J. B.; Poulton, S. J.; Copley, J. R. D.] Natl Inst Stand & Technol, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA.
[Qiu, Y.] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA.
RP Hong, T (reprint author), Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
RI Hong, Tao/F-8166-2010; Broholm, Collin/E-8228-2011; Cabrera,
Ivelisse/L-5999-2013
OI Hong, Tao/0000-0002-0161-8588; Broholm, Collin/0000-0002-1569-9892;
Cabrera, Ivelisse/0000-0002-0287-8437
FU NSF [DMR-0454672, DMR-0306940, DMR-0706553]; Division of Scientific User
Facilities, Office of BES, DOE
FX We thank R. Paul for help with neutron activation analysis. The DAVE
program is supported by the NSF under Agreement No. DMR-0454672. The
work at ORNL was partially funded by the Division of Scientific User
Facilities, Office of BES, DOE. The work at JHU was supported by the NSF
under Grants No. DMR-0306940 and No. DMR-0706553. The work at NIST
utilized facilities supported in part by the NSF under Agreement No.
DMR-0454672.
NR 25
TC 8
Z9 8
U1 0
U2 4
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 22
PY 2010
VL 82
IS 18
AR 184424
DI 10.1103/PhysRevB.82.184424
PG 4
WC Physics, Condensed Matter
SC Physics
GA 683GW
UT WOS:000284462200006
ER
PT J
AU Yin, TY
Zhang, XY
Gunter, L
Priya, R
Sykes, R
Davis, M
Wullschleger, SD
Tuskan, GA
AF Yin, Tongming
Zhang, Xinye
Gunter, Lee
Priya, Ranjan
Sykes, Robert
Davis, Mark
Wullschleger, Stan D.
Tuskan, Gerald A.
TI Differential Detection of Genetic Loci Underlying Stem and Root Lignin
Content in Populus
SO PLOS ONE
LA English
DT Article
ID CINNAMYL ALCOHOL-DEHYDROGENASE; QUANTITATIVE TRAIT LOCI; CELLULOSIC
ETHANOL; BIOFUEL PRODUCTION; DUPLICATED GENES; WOOD CHEMISTRY; GENOME;
TRICHOCARPA; BIOMASS; POPLAR
AB In this study, we established a comprehensive genetic map with a large number of progeny from a three-generation hybrid Populus intercross, and phenotyped the lignin content, S/G ratio and 28 cell wall subcomponents both in stems and roots for the mapping individuals. Phenotypic analysis revealed that lignin content and syringyl-to-guaiacyl (S/G) ratio using pyrolysis molecular beam mass spectroscopy (pyMBMS) varied among mapping individuals. Phenotypic analysis revealed that stem lignin content is significantly higher than that in root and the quantified traits can be classified into four distinct groups, with strong correlations observed among components within organs. Altogether, 179 coordinating QTLs were detected, and they were co-localized into 49 genetic loci, 27 of which appear to be pleiotropic. Many of the detected genetic loci were detected differentially in stem and root. This is the first report of separate genetic loci controlling cell wall phenotypes above and below ground. These results suggest that it may be possible to modify lignin content and composition via breed and/or engineer as a means of simultaneously improving Populus for cellulosic ethanol production and carbon sequestration.
C1 [Yin, Tongming; Zhang, Xinye; Gunter, Lee; Priya, Ranjan; Wullschleger, Stan D.; Tuskan, Gerald A.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
[Yin, Tongming; Zhang, Xinye; Gunter, Lee; Priya, Ranjan; Sykes, Robert; Davis, Mark; Tuskan, Gerald A.] Bioenergy Sci Ctr, Oak Ridge, TN USA.
[Yin, Tongming] Nanjing Forestry Univ, Key Lab Forest Genet & Gene Engn, Nanjing, Peoples R China.
[Sykes, Robert; Davis, Mark] Natl Bioenergy Ctr, Natl Renewable Energy Lab, Golden, CO USA.
RP Yin, TY (reprint author), Oak Ridge Natl Lab, Div Environm Sci, POB 2008, Oak Ridge, TN 37831 USA.
EM gtk@ornl.gov
RI Tuskan, Gerald/A-6225-2011; Wullschleger, Stan/B-8297-2012; Gunter,
Lee/L-3480-2016;
OI Tuskan, Gerald/0000-0003-0106-1289; Wullschleger,
Stan/0000-0002-9869-0446; Gunter, Lee/0000-0003-1211-7532; davis,
mark/0000-0003-4541-9852
FU Oak Ridge National Laboratory (ORNL); U.S. Department of Energy, Office
of Science, Biological and Environmental Research Carbon Sequestration
Program and Bioenergy Science Center; US Department of Energy
[DE-AC05-00OR22725]
FX Funding for this research was provided by the Laboratory Directed
Research and Development Program of Oak Ridge National Laboratory (ORNL)
and the U.S. Department of Energy, Office of Science, Biological and
Environmental Research Carbon Sequestration Program and Bioenergy
Science Center. ORNL is managed by UT-Battelle, LLC for the US
Department of Energy under contract no. DE-AC05-00OR22725. The funders
had no role in study design, data collection and analysis, decision to
publish, or preparation of the manuscript.
NR 45
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U1 1
U2 15
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD NOV 22
PY 2010
VL 5
IS 11
AR e14021
DI 10.1371/journal.pone.0014021
PG 7
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 683HW
UT WOS:000284467200002
PM 21151641
ER
PT J
AU Zhang, XW
Zunger, A
Trimarchi, G
AF Zhang, Xiuwen
Zunger, Alex
Trimarchi, Giancarlo
TI Structure prediction and targeted synthesis: A new NanN2 diazenide
crystalline structure
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID TOTAL-ENERGY; ELECTRONIC-STRUCTURE; SEMICONDUCTORS; OPTIMIZATION;
STABILITY; METALS; NA3N
AB Significant progress in theoretical and computational techniques for predicting stable crystal structures has recently begun to stimulate targeted synthesis of such predicted structures. Using a global space-group optimization (GSGO) approach that locates ground-state structures and stable stoichiometries from first-principles energy functionals by objectively starting from randomly selected lattice vectors and random atomic positions, we predict the first alkali diazenide compound NanN2, manifesting homopolar N-N bonds. The previously predicted Na3N structure manifests only heteropolar Na-N bonds and has positive formation enthalpy. It was calculated based on local Hartree-Fock relaxation of a fixed-structure type (Li3P-type) found by searching an electrostatic point-ion model. Synthesis attempts of this positive Delta H compound using activated nitrogen yielded another structure (anti-ReO3-type). The currently predicted (negative formation enthalpy) diazenide Na2N2 completes the series of previously known BaN2 and SrN2 diazenides where the metal sublattice transfers charge into the empty N-2 Pi(g) orbital. This points to a new class of alkali nitrides with fundamentally different bonding, i.e., homopolar rather than heteropolar bonds and, at the same time, illustrates some of the crucial subtleties and pitfalls involved in structure predictions versus planned synthesis. Attempts at synthesis of the stable Na2N2 predicted here will be interesting. (C) 2010 American Institute of Physics. [doi:10.1063/1.3488440]
C1 [Zhang, Xiuwen; Zunger, Alex] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Trimarchi, Giancarlo] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA.
RP Zhang, XW (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM alex_zunger@nrel.gov
RI Zunger, Alex/A-6733-2013; ZHANG, XIUWEN/K-7383-2012; Trimarchi,
Giancarlo/A-8225-2010
OI Trimarchi, Giancarlo/0000-0002-0365-3221
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Materials Sciences and Engineering, Energy Frontier Research Centers
[DE-AC36-08GO28308]
FX We thank Professor Martin Jansen for correspondence of his works (Refs.
1, 2, and 6) and for pointing out to us Ref. 29. We are grateful to
Professor Kenneth R. Poeppelmeier and Dr. Stephan Lany for very helpful
discussions. This research was supported by the U.S. Department of
Energy, Office of Basic Energy Sciences, Division of Materials Sciences
and Engineering, Energy Frontier Research Centers, under Award No.
DE-AC36-08GO28308 to NREL.
NR 33
TC 11
Z9 11
U1 3
U2 20
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD NOV 21
PY 2010
VL 133
IS 19
AR 194504
DI 10.1063/1.3488440
PG 6
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 684KF
UT WOS:000284548100018
PM 21090865
ER
PT J
AU Byrd, JM
Shea, TJ
Denes, P
Siddons, P
Attwood, D
Kaertner, F
Moog, L
Li, Y
Sakdinawat, A
Schlueter, R
AF Byrd, J. M.
Shea, T. J.
Denes, P.
Siddons, P.
Attwood, D.
Kaertner, F.
Moog, L.
Li, Y.
Sakdinawat, A.
Schlueter, R.
TI Enabling instrumentation and technology for 21st century light sources
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Review
DE Light sources; Instrumentation; Synchrotron radiation
ID NOISE; RADIATION; UNDULATOR; SIGNALS; LASERS; JITTER
AB We present the summary from the Accelerator Instrumentation and Technology working group, one of the five working groups that participated in the BES-sponsored Workshop on Accelerator Physics of Future Light Sources held in Gaithersburg, MD September 15-17, 2009. We describe progress and potential in three areas: attosecond instrumentation, photon detectors for user experiments, and insertion devices. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Byrd, J. M.; Denes, P.; Schlueter, R.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Shea, T. J.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Siddons, P.] Brookhaven Natl Lab, Long Isl City, NY 11973 USA.
[Attwood, D.; Sakdinawat, A.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[Kaertner, F.] MIT, Cambridge, MA 02139 USA.
[Moog, L.; Li, Y.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Byrd, JM (reprint author), Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM JMByrd@lbl.gov
NR 46
TC 5
Z9 5
U1 0
U2 8
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD NOV 21
PY 2010
VL 623
IS 3
BP 910
EP 920
DI 10.1016/j.nima.2010.06.244
PG 11
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 681TX
UT WOS:000284343800007
ER
PT J
AU Ronzhin, A
Albrow, MG
Demarteau, M
Los, S
Malik, S
Pronko, A
Ramberg, E
Zatserklyaniy, A
AF Ronzhin, A.
Albrow, M. G.
Demarteau, M.
Los, S.
Malik, S.
Pronko, A.
Ramberg, E.
Zatserklyaniy, A.
TI Development of a 10 ps level time of flight system in the Fermilab Test
Beam Facility
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE SiPm; Photodetectors; TOF
AB We describe here the development of a time of flight (TOF) system with 10-20 ps resolution for particle identification in a beam line. The detector resolution also was measured with the start and stop counters close together in the 120 GeV proton beam of the Fermilab Test Beam Facility. We tested both microchannel plate photomultipliers (MCP PMT) and silicon photomultipliers (SiPMs), in both cases using Cherenkov light produced in fused silica (quartz) radiators. Published by Elsevier B.V.
C1 [Ronzhin, A.; Albrow, M. G.; Demarteau, M.; Los, S.; Pronko, A.; Ramberg, E.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Malik, S.] Rockefeller Univ, New York, NY 10021 USA.
[Zatserklyaniy, A.] Univ Puerto Rico, Mayaguez, PR 00681 USA.
RP Ronzhin, A (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM ronzhin@fnal.gov
RI Rinaldi2, Carlos/D-4479-2011
NR 7
TC 16
Z9 16
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD NOV 21
PY 2010
VL 623
IS 3
BP 931
EP 941
DI 10.1016/j.nima.2010.08.025
PG 11
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 681TX
UT WOS:000284343800010
ER
PT J
AU Kouzes, RT
Ely, JH
Erikson, LE
Kernan, WJ
Lintereur, AT
Siciliano, ER
Stephens, DL
Stromswold, DC
Van Ginhoven, RM
Woodring, ML
AF Kouzes, Richard T.
Ely, James H.
Erikson, Luke E.
Kernan, Warnick J.
Lintereur, Azaree T.
Siciliano, Edward R.
Stephens, Daniel L.
Stromswold, David C.
Van Ginhoven, Renee M.
Woodring, Mitchell L.
TI Neutron detection alternatives to He-3 for national security
applications
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Neutron detection; Helium-3; Radiation detection; Homeland security;
National security; MCNP
ID LINED PROPORTIONAL-COUNTERS; BF3; OPTIMIZATION; PERFORMANCE; FLUXES
AB One of the main uses for He-3 is in gas proportional counters for neutron detection. Large radiation detection systems deployed for homeland security and proliferation detection applications use such systems. Due to the large increase in use of 3He for homeland security and basic research, the supply has dwindled, and can no longer meet the demand. This has led to the search for an alternative technology to replace the use of He-3-based neutron detectors. In this paper, we review the testing of currently commercially available alternative technologies for neutron detection in large systems used in various national security applications. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Kouzes, Richard T.; Ely, James H.; Erikson, Luke E.; Kernan, Warnick J.; Lintereur, Azaree T.; Siciliano, Edward R.; Stephens, Daniel L.; Stromswold, David C.; Van Ginhoven, Renee M.; Woodring, Mitchell L.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Kouzes, RT (reprint author), Pacific NW Natl Lab, MS K7-36,POB 999, Richland, WA 99352 USA.
EM rkouzes@pnl.gov
FU United States Department of Energy [NA-22, DE-AC05-76RLO]; Pacific
Northwest National Laboratory; Department of Defense and the Department
of Homeland Security; PNNL-SA-72544
FX This work was supported largely by the United States Department of
Energy (NA-22). Additional support was provided by Pacific Northwest
National Laboratory, the Department of Defense and the Department of
Homeland Security. Pacific Northwest National Laboratory is operated for
the United States Department of Energy by Battelle under Contract
DE-AC05-76RLO 1830. PNNL-SA-72544.
NR 38
TC 98
Z9 101
U1 4
U2 31
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD NOV 21
PY 2010
VL 623
IS 3
BP 1035
EP 1045
DI 10.1016/j.nima.2010.08.021
PG 11
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 681TX
UT WOS:000284343800024
ER
PT J
AU Giele, WT
Kunszt, Z
Winter, J
AF Giele, Walter T.
Kunszt, Zoltan
Winter, Jan
TI Efficient color-dressed calculation of virtual corrections
SO NUCLEAR PHYSICS B
LA English
DT Article
DE QCD; NLO computations; Jets; Hadronic colliders
ID ONE-LOOP AMPLITUDES; HELICITY AMPLITUDES; HADRON-COLLISIONS;
CROSS-SECTIONS; SCATTERING; LEVEL; TREE; COLLIDERS; UNITARITY
AB With the advent of generalized unitarity and parametric integration techniques, the construction of a generic Next-to-Leading Order Monte Carlo becomes feasible. Such a generator will entail the treatment of QCD color in the amplitudes. We extend the concept of color dressing to one-loop amplitudes, resulting in the formulation of an explicit algorithmic solution for the calculation of arbitrary scattering processes at Next-to-Leading order. The resulting algorithm is of exponential complexity, that is the numerical evaluation time of the virtual corrections grows by a constant multiplicative factor as the number of external partons is increased. To study the properties of the method, we calculate the virtual corrections to n-gluon scattering. Published by Elsevier B.V.
C1 [Giele, Walter T.; Winter, Jan] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Kunszt, Zoltan] ETH, Inst Theoret Phys, CH-8093 Zurich, Switzerland.
[Kunszt, Zoltan] CERN, CH-1211 Geneva, Switzerland.
RP Winter, J (reprint author), Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
EM jwinter@fnal.gov
RI Kunszt, Zoltan/G-3420-2013
FU United States Department of Energy [DE-AC02-07CH11359]
FX We would like to thank Giulia Zanderighi, Kirill Melnikov, Stefan Hoche
and Tanju Gleisberg for helpful discussions on the subject. Fermilab is
operated by Fermi Research Alliance, LLC, under contract
DE-AC02-07CH11359 with the United States Department of Energy.
NR 50
TC 16
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U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0550-3213
J9 NUCL PHYS B
JI Nucl. Phys. B
PD NOV 21
PY 2010
VL 840
IS 1-2
BP 214
EP 270
DI 10.1016/j.nuclphysb.2010.07.007
PG 57
WC Physics, Particles & Fields
SC Physics
GA 650EV
UT WOS:000281832900009
ER
PT J
AU Cao, NN
Huesman, RH
Moses, WW
Qi, JY
AF Cao, Nannan
Huesman, Ronald H.
Moses, William W.
Qi, Jinyi
TI Detection performance analysis for time-of-flight PET
SO PHYSICS IN MEDICINE AND BIOLOGY
LA English
DT Article
ID TO-NOISE RATIO; LIKELIHOOD RECONSTRUCTION; MAP RECONSTRUCTION;
RESOLUTION; OBSERVER; SCANNER; IMPACT; SPECT
AB In this paper, we investigate the performance of time-of-flight (TOF) positron emission tomography (PET) in improving lesion detectability. We present a theoretical approach to compare lesion detectability of TOF versus non-TOF systems and perform computer simulations to validate the theoretical prediction. A single-ring TOF PET tomograph is simulated using SimSET software, and images are reconstructed in 2D from list-mode data using a maximum a posteriori method. We use a channelized Hotelling observer to assess the detection performance. Both the receiver operating characteristic (ROC) and localization ROC curves are compared for the TOF and non-TOF PET systems. We first studied the SNR gains for TOF PET with different scatter and random fractions, system timing resolutions and object sizes. We found that the TOF information improves the lesion detectability and the improvement is greater with larger fractions of randoms, better timing resolution and bigger objects. The scatters by themselves have little impact on the SNR gain after correction. Since the true system timing resolution may not be known precisely in practice, we investigated the effect of mismatched timing kernels and showed that using a mismatched kernel during reconstruction always degrades the detection performance, no matter whether it is narrower or wider than the real value. Using the proposed theoretical framework, we also studied the effect of lumpy backgrounds on the detection performance. Our results indicated that with lumpy backgrounds, the TOF PET still outperforms the non-TOF PET, but the improvement is smaller compared with the uniform background case. More specifically, with the same correlation length, the SNR gain reduces with bigger number of lumpy patches and greater lumpy amplitudes. With the same variance, the SNR gain reaches the minimum when the width of the Gaussian lumps is close to the size of the tumor.
C1 [Cao, Nannan; Qi, Jinyi] Univ Calif Davis, Dept Biomed Engn, Davis, CA 95616 USA.
[Huesman, Ronald H.; Moses, William W.; Qi, Jinyi] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Cao, NN (reprint author), Univ Calif Davis, Dept Biomed Engn, Davis, CA 95616 USA.
EM qi@ucdavis.edu
RI Qi, Jinyi/A-1768-2010
OI Qi, Jinyi/0000-0002-5428-0322
FU Office of Science, Office of Biological and Environmental Research,
Medical Science Division of the US Department of Energy
[DE-AC02-05CH11231]; National Institutes of Health National Institute of
Biomedical Imaging and Bioengineering [R01-EB006085, R01EB000194]
FX This work is supported in part by the Director, Office of Science,
Office of Biological and Environmental Research, Medical Science
Division of the US Department of Energy under Contract No.
DE-AC02-05CH11231, and in part by the National Institutes of Health,
National Institute of Biomedical Imaging and Bioengineering under grant
numbers R01-EB006085 and R01EB000194.
NR 26
TC 6
Z9 8
U1 0
U2 11
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0031-9155
J9 PHYS MED BIOL
JI Phys. Med. Biol.
PD NOV 21
PY 2010
VL 55
IS 22
BP 6931
EP 6950
DI 10.1088/0031-9155/55/22/021
PG 20
WC Engineering, Biomedical; Radiology, Nuclear Medicine & Medical Imaging
SC Engineering; Radiology, Nuclear Medicine & Medical Imaging
GA 674YT
UT WOS:000283789700024
PM 21048292
ER
PT J
AU Haynes, K
Cannon, JM
Skillman, ED
Jackson, DC
Gehrz, R
AF Haynes, Korey
Cannon, John M.
Skillman, Evan D.
Jackson, Dale C.
Gehrz, Robert
TI SPATIALLY RESOLVED POLYCYCLIC AROMATIC HYDROCARBON EMISSION FEATURES IN
NEARBY, LOW METALLICITY, STAR-FORMING GALAXIES
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE galaxies: dwarf; galaxies: evolution; galaxies: individual (NGC 55, NGC
3109, IC 5152); galaxies: irregular
ID UNIDENTIFIED INFRARED-EMISSION; ELEMENTAL ABUNDANCE VARIATIONS; DWARF
GALAXIES; CHEMICAL ENRICHMENT; INTERSTELLAR DUST; LOW-LUMINOSITY;
MASSIVE STARS; SPITZER VIEW; LOCAL GROUP; SPECTRA
AB Low-resolution, mid-infrared Spitzer/IRS spectral maps are presented for three nearby, low-metallicity dwarf galaxies (NGC 55, NGC 3109, and IC 5152) for the purpose of examining the spatial distribution and variation of polycyclic aromatic hydrocarbon (PAH) emission. The sample straddles a metallicity of 12 + log(O/H) approximate to 8, a transition point below which PAH intensity empirically drops and the character of the interstellar medium changes. We derive quantitative radiances of PAH features and atomic lines on both global and spatially resolved scales. The Spitzer spectra, combined with extensive ancillary data from the UV through the mid-infrared, allow us to examine changes in the physical environments and in PAH feature radiances down to a physical scale of similar to 50 pc. We discuss correlations between various PAH emission feature and atomic line radiances. The (6.2 mu m)/(11.3 mu m), (7.7 mu m)/(11.3 mu m), (8.6 mu m)/(11.3 mu m), (7.7 mu m)/(6.2 mu m), and (8.6 mu m)/(6.2 mu m) PAH radiance ratios are found to be independent of position across all three galaxies, although the ratios do vary from galaxy to galaxy. As seen in other galaxies, we find no variation in the grain size distribution as a function of local radiation field strength. Absolute PAH feature intensities as measured by a ratio of PAH/(24 mu m) radiances are seen to vary both positionally within a given galaxy and from one galaxy to another when integrated over the full observed extent of each system. We examine direct comparisons of CC mode PAH ratios (7.7 mu m)/(6.2 mu m) and (8.6 mu m)/(6.2 mu m) to the mixed (CC/CH) mode PAH ratio (7.7 mu m)/(11.3 mu m). We find little variation in either mode and no difference in trends between modes. While the local conditions change markedly over the observed regions of these galaxies, the properties of PAH emission show a remarkable degree of uniformity.
C1 [Haynes, Korey; Cannon, John M.] Macalester Coll, Dept Phys & Astron, St Paul, MN 55105 USA.
[Haynes, Korey] George Mason Univ, Dept Phys & Astron, Fairfax, VA 22030 USA.
[Skillman, Evan D.; Gehrz, Robert] Univ Minnesota, Dept Astron, Minneapolis, MN 55455 USA.
[Jackson, Dale C.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Haynes, K (reprint author), Macalester Coll, Dept Phys & Astron, 1600 Grand Ave, St Paul, MN 55105 USA.
EM khaynes5@gmu.edu; jcannon@macalester.edu; skillman@astro.umn.edu;
dcjacks@sandia.gov; gehrz@astro.umn.edu
FU NASA [1321212, 1256406, 1215746]; NASA's Astrophysics Data System;
National Science Foundation; Spitzer Science Center
FX This work is based on observations made with the Spitzer Space
Telescope, which is operated by the Jet Propulsion Laboratory,
California Institute of Technology, under a contract with NASA. Support
for this work was provided by NASA through contract 1321212, issued by
JPL/Caltech to J.M.C. at Macalester College. R. D. G. was supported in
part by NASA through contracts 1256406 and 1215746 issued by JPL/Caltech
to the University of Minnesota. This research has made use of the
NASA/IPAC Extragalactic Database (NED) which is operated by the Jet
Propulsion Laboratory, California Institute of Technology, under
contract with the National Aeronautics and Space Administration, and
NASA's Astrophysics Data System. This publication has made use of data
products from the Two Micron All Sky Survey, which is a joint project of
the University of Massachusetts and the Infrared Processing and Analysis
Center/California Institute of Technology, funded by the National
Aeronautics and Space Administration and the National Science
Foundation. We acknowledge Daniel A. Dale, J.D. Smith, Thomas Varberg,
and the Spitzer Science Center for helpful discussions and support.
Finally, we thank the anonymous referee for a careful and insightful
report that improved this manuscript.
NR 46
TC 6
Z9 6
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD NOV 20
PY 2010
VL 724
IS 1
BP 215
EP 232
DI 10.1088/0004-637X/724/1/215
PG 18
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 678RC
UT WOS:000284096900020
ER
PT J
AU Croft, S
Bower, GC
Ackermann, R
Atkinson, S
Backer, D
Backus, P
Barott, WC
Bauermeister, A
Blitz, L
Bock, D
Bradford, T
Cheng, C
Cork, C
Davis, M
DeBoer, D
Dexter, M
Dreher, J
Engargiola, G
Fields, E
Fleming, M
Forster, JR
Gutierrez-Kraybill, C
Harp, G
Helfer, T
Hull, C
Jordan, J
Jorgensen, S
Keating, G
Kilsdonk, T
Law, C
van Leeuwen, J
Lugten, J
MacMahon, D
McMahon, P
Milgrome, O
Pierson, T
Randall, K
Ross, J
Shostak, S
Siemion, A
Smolek, K
Tarter, J
Thornton, D
Urry, L
Vitouchkine, A
Wadefalk, N
Welch, J
Werthimer, D
Whysong, D
Williams, PKG
Wright, M
AF Croft, Steve
Bower, Geoffrey C.
Ackermann, Rob
Atkinson, Shannon
Backer, Don
Backus, Peter
Barott, William C.
Bauermeister, Amber
Blitz, Leo
Bock, Douglas
Bradford, Tucker
Cheng, Calvin
Cork, Chris
Davis, Mike
DeBoer, Dave
Dexter, Matt
Dreher, John
Engargiola, Greg
Fields, Ed
Fleming, Matt
Forster, James R.
Gutierrez-Kraybill, Colby
Harp, Gerry
Helfer, Tamara
Hull, Chat
Jordan, Jane
Jorgensen, Susanne
Keating, Garrett
Kilsdonk, Tom
Law, Casey
van Leeuwen, Joeri
Lugten, John
MacMahon, Dave
McMahon, Peter
Milgrome, Oren
Pierson, Tom
Randall, Karen
Ross, John
Shostak, Seth
Siemion, Andrew
Smolek, Ken
Tarter, Jill
Thornton, Douglas
Urry, Lynn
Vitouchkine, Artyom
Wadefalk, Niklas
Welch, Jack
Werthimer, Dan
Whysong, David
Williams, Peter K. G.
Wright, Melvyn
TI THE ALLEN TELESCOPE ARRAY TWENTY-CENTIMETER SURVEY-A 690 DEG(2), 12
EPOCH RADIO DATA SET. I. CATALOG AND LONG-DURATION TRANSIENT STATISTICS
(vol 719, pg 45, 2010)
SO ASTROPHYSICAL JOURNAL
LA English
DT Correction
C1 [Croft, Steve; Bower, Geoffrey C.; Backer, Don; Bauermeister, Amber; Blitz, Leo; Bock, Douglas; Cheng, Calvin; Dexter, Matt; Engargiola, Greg; Fields, Ed; Forster, James R.; Gutierrez-Kraybill, Colby; Helfer, Tamara; Hull, Chat; Jorgensen, Susanne; Keating, Garrett; Law, Casey; MacMahon, Dave; Milgrome, Oren; Siemion, Andrew; Thornton, Douglas; Urry, Lynn; Welch, Jack; Werthimer, Dan; Whysong, David; Williams, Peter K. G.; Wright, Melvyn] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA.
[Ackermann, Rob; Atkinson, Shannon; Backus, Peter; Bradford, Tucker; Davis, Mike; Dreher, John; Harp, Gerry; Jordan, Jane; Kilsdonk, Tom; Pierson, Tom; Randall, Karen; Ross, John; Shostak, Seth; Smolek, Ken; Tarter, Jill] SETI Inst, Mountain View, CA 94043 USA.
[Barott, William C.] Embry Riddle Aeronaut Univ, Elect Comp Software & Syst Engn Dept, Daytona Beach, FL 32114 USA.
[Cork, Chris; Fleming, Matt; Vitouchkine, Artyom] Minex Engn, Antioch, CA 94509 USA.
[DeBoer, Dave] CSIRO ATNF, Epping, NSW 1710, Australia.
[van Leeuwen, Joeri] ASTRON, NL-7990 AA Dwingeloo, Netherlands.
[Lugten, John] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[McMahon, Peter] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA.
[Wadefalk, Niklas] Chalmers, Dept Microtechnol & Nanosci MC2, SE-41296 Gothenburg, Sweden.
RP Croft, S (reprint author), Univ Calif Berkeley, Dept Astron, 601 Campbell Hall 3411, Berkeley, CA 94720 USA.
OI Croft, Steve/0000-0003-4823-129X
NR 1
TC 3
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U1 0
U2 4
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD NOV 20
PY 2010
VL 724
IS 1
BP 827
EP 827
DI 10.1088/0004-637X/724/1/827
PG 1
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 678RC
UT WOS:000284096900069
ER
PT J
AU Raskin, C
Scannapieco, E
Rockefeller, G
Fryer, C
Diehl, S
Timmes, FX
AF Raskin, Cody
Scannapieco, Evan
Rockefeller, Gabriel
Fryer, Chris
Diehl, Steven
Timmes, F. X.
TI Ni-56 PRODUCTION IN DOUBLE-DEGENERATE WHITE DWARF COLLISIONS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE hydrodynamics; nuclear reactions, nucleosynthesis, abundances;
supernovae: general; white dwarfs
ID PRE-SUPERNOVA EVOLUTION; GLOBULAR-CLUSTERS; IA SUPERNOVAE; STELLAR
HYDRODYNAMICS; MASS; MODELS; SIMULATIONS; EXPLOSION; CONSISTENCY;
MECHANISMS
AB We present a comprehensive study of white dwarf collisions as an avenue for creating type Ia supernovae. Using a smooth particle hydrodynamics code with a 13-isotope, alpha-chain nuclear network, we examine the resulting Ni-56 yield as a function of total mass, mass ratio, and impact parameter. We showthat several combinations of white dwarf masses and impact parameters are able to produce sufficient quantities of Ni-56 to be observable at cosmological distances. We find that the Ni-56 production in double-degenerate white dwarf collisions ranges from sub-luminous to the super-luminous, depending on the parameters of the collision. For all mass pairs, collisions with small impact parameters have the highest likelihood of detonating, but Ni-56 production is insensitive to this parameter in high-mass combinations, which significantly increases their likelihood of detection. We also find that the Ni-56 dependence on total mass and mass ratio is not linear, with larger-mass primaries producing disproportionately more Ni-56 than their lower-mass secondary counterparts, and symmetric pairs of masses producing more Ni-56 than asymmetric pairs.
C1 [Raskin, Cody; Scannapieco, Evan; Timmes, F. X.] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA.
[Rockefeller, Gabriel; Fryer, Chris; Diehl, Steven] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Timmes, F. X.] Michigan State Univ, Joint Inst Nucl Astrophys, E Lansing, MI 48824 USA.
RP Raskin, C (reprint author), Arizona State Univ, Sch Earth & Space Explorat, POB 871404, Tempe, AZ 85287 USA.
RI Rockefeller, Gabriel/G-2920-2010
OI Rockefeller, Gabriel/0000-0002-9029-5097
FU National Science Foundation [AST 08-06720]; National Aeronautics and
Space Administration [PVS0401]; Arizona State University
FX This work was supported by the National Science Foundation under grant
AST 08-06720, by the National Aeronautics and Space Administration under
NESSF grant PVS0401, and by a grant from the Arizona State University
chapter of the GPSA. All simulations were conducted at the Ira A. Fulton
High Performance Computing Center at Arizona State University. We thank
James Rhoads and Sumner Starrfield for insightful discussions, and our
anonymous referee for useful suggestions and feedback.
NR 47
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U1 0
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD NOV 20
PY 2010
VL 724
IS 1
BP 111
EP 125
DI 10.1088/0004-637X/724/1/111
PG 15
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 678RC
UT WOS:000284096900011
ER
PT J
AU Heger, A
Woosley, SE
AF Heger, Alexander
Woosley, S. E.
TI NUCLEOSYNTHESIS AND EVOLUTION OF MASSIVE METAL-FREE STARS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE early universe; Galaxy: abundances; nuclear reactions, nucleosynthesis,
abundances; stars: abundances; stars: evolution; supernovae: general
ID LESS-THAN -5.0; POOR STARS; 1ST STARS; POPULATION-III; ABUNDANCE
PATTERNS; SOLAR-METALLICITY; OXYGEN ABUNDANCE; ZERO-METALLICITY;
UNEVOLVED STAR; DRIVEN WINDS
AB The evolution and explosion of metal-free stars with masses 10-100 M(circle dot) are followed, and their nucleosynthetic yields, light curves, and remnant masses determined. Such stars would have been the first to form after the big bang and may have left a distinctive imprint on the composition of the early universe. When the supernova yields are integrated over a Salpeter initial mass function (IMF), the resulting elemental abundance pattern is qualitatively solar, but with marked deficiencies of odd-Z elements with 7 <= Z <= 13. Neglecting the contribution of the neutrino wind from the neutron stars that they form, no appreciable abundances are made for elements heavier than germanium. The computed pattern compares favorably with what has been observed in metal-deficient stars with [Z] less than or similar to -3. The amount of ionizing radiation from this generation of stars is similar to 2.16 MeV per baryon (4.15 B per M(circle dot); where 1 B = 1 Bethe = 10(51) erg) for a Salpeter IMF, and may have played a role in reionizing the universe. Neglecting rotation, most of the stars end their lives as blue supergiants and form supernovae with distinctive light curves resembling SN 1987A, but some produce primary nitrogen due to dredge-up and become red supergiants. These make brighter supernovae like typical Type IIp's. For the lower mass supernovae considered, the distribution of remnant masses clusters around typical modern neutron star masses, but above 20-30 M(circle dot), with the value depending on explosion energy, black holes are copiously formed by fallback, with a maximum hole mass of similar to 40 M(circle dot). A novel automated fitting algorithm is developed for determining optimal combinations of explosion energy, mixing, and IMF in the large model database to agree with specified data sets. The model is applied to the low-metallicity sample of Cayrel et al. and the two ultra-iron-poor stars HE0107-5240 and HE1327-2326. Best agreement with these very low metallicity stars is achieved with very little mixing, and none of the metal-deficient data sets considered show the need for a high-energy explosion component. In contrast, explosion energies somewhat less than 1.2 B seem to be preferred in most cases.
C1 [Heger, Alexander] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA.
[Heger, Alexander] Los Alamos Natl Lab, Astrophys & Cosmol Grp T2, Los Alamos, NM 87545 USA.
[Woosley, S. E.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA.
RP Heger, A (reprint author), Univ Minnesota, Sch Phys & Astron, 116 Church St SE, Minneapolis, MN 55455 USA.
EM alex@physics.umn.edu; woosley@ucolick.org
FU NSF [AST 02-06111]; DOE [DOE-FC02-01ER41176, DOE-FC02-06ER41438,
DE-SC0002300/FC02-09ER41618]; National Nuclear Security Administration
of the U.S. Department of Energy at Los Alamos National Laboratory
[DE-AC52-06NA25396]; UMN; US Department of Energy [DE-FG02-87ER40328]
FX This work was supported by NSF (AST 02-06111), and the DOE Program for
Scientific Discovery through Advanced Computing (SciDAC; grants
DOE-FC02-01ER41176 and DOE-FC02-06ER41438). At LANL, A.H. performed this
work under the auspices of the National Nuclear Security Administration
of the U.S. Department of Energy at Los Alamos National Laboratory under
Contract No. DE-AC52-06NA25396 and at UMN A.H. has been supported by the
DOE Program for Scientific Discovery through Advanced Computing (SciDAC;
DE-SC0002300/FC02-09ER41618), and by the US Department of Energy under
grant DE-FG02-87ER40328.
NR 66
TC 166
Z9 168
U1 0
U2 7
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD NOV 20
PY 2010
VL 724
IS 1
BP 341
EP 373
DI 10.1088/0004-637X/724/1/341
PG 33
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 678RC
UT WOS:000284096900030
ER
PT J
AU Kuzmin, D
Moller, M
Shadid, JN
Shashkov, M
AF Kuzmin, Dmitri
Moeller, Matthias
Shadid, John N.
Shashkov, Mikhail
TI Failsafe flux limiting and constrained data projections for equations of
gas dynamics
SO JOURNAL OF COMPUTATIONAL PHYSICS
LA English
DT Article
DE Systems of conservation laws; Finite elements; Maximum principle;
Flux-corrected transport; Local extremum diminishing interpolation
ID CORRECTED TRANSPORT; CONSERVATION-LAWS; FEM-FCT; INTERPOLATION; SCHEMES
AB A new approach to flux limiting for systems of conservation laws is presented. The Galerkin finite element discretization/L-2 projection is equipped with a failsafe mechanism that prevents the birth and growth of spurious local extrema. Within the framework of a synchronized flux-corrected transport (FCT) algorithm, the velocity and pressure fields are constrained using node-by-node transformations from the conservative to the primitive variables. An additional correction step is included to ensure that all the quantities of interest (density, velocity, pressure) are bounded by the physically admissible low-order values. The result is a conservative and bounded scheme with low numerical diffusion. The new failsafe FCT limiter is integrated into a high-resolution finite element scheme for the Euler equations of gas dynamics. Also, bounded L-2 projection operators for conservative interpolation/initialization are designed. The performance of the proposed limiting strategy and the need for a posteriori control of flux-corrected solutions are illustrated by numerical examples. (C) 2010 Elsevier Inc. All rights reserved.
C1 [Kuzmin, Dmitri] Univ Erlangen Nurnberg, D-91058 Erlangen, Germany.
[Moeller, Matthias] Dortmund Univ Technol, Inst Appl Math LS 3, D-44227 Dortmund, Germany.
[Shadid, John N.] Sandia Natl Labs, Computat Sci R&D Grp, Albuquerque, NM 87185 USA.
[Shashkov, Mikhail] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Kuzmin, D (reprint author), Univ Erlangen Nurnberg, Haberstr 2, D-91058 Erlangen, Germany.
EM kuzmin@am.uni-erlangen.de; matthias.moeller@math.tu-dortmund.de;
jnshadi@sandia.gov; shashkov@lanl.gov
FU German Research Association (DFG) [KU 1530/3-1, SFB 708]
FX This research was supported by the German Research Association (DFG)
under grant KU 1530/3-1 and within the framework of SFB 708.
NR 25
TC 9
Z9 9
U1 0
U2 4
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9991
EI 1090-2716
J9 J COMPUT PHYS
JI J. Comput. Phys.
PD NOV 20
PY 2010
VL 229
IS 23
BP 8766
EP 8779
DI 10.1016/j.jcp.2010.08.009
PG 14
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA 670FD
UT WOS:000283405700007
ER
PT J
AU Matsui, H
Puhl-Quinn, PA
Bonnell, JW
Farrugia, CJ
Jordanova, VK
Khotyaintsev, YV
Lindqvist, PA
Georgescu, E
Torbert, RB
AF Matsui, H.
Puhl-Quinn, P. A.
Bonnell, J. W.
Farrugia, C. J.
Jordanova, V. K.
Khotyaintsev, Yu. V.
Lindqvist, P. -A.
Georgescu, E.
Torbert, R. B.
TI Characteristics of storm time electric fields in the inner magnetosphere
derived from Cluster data
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID INTERPLANETARY MAGNETIC-FIELD; LATITUDE PLASMA CONVECTION; RING CURRENT;
EDI; DEPENDENCE; SHEET; IONOSPHERE; SUBSTORMS; PRESSURE; FLOWS
AB Storm-time electric fields in the inner magnetosphere measured by Cluster are reported in this study. First, we show two events around the time when Dst index is at a minimum. The electric field possibly related to subauroral ion drifts and/or undershielding is measured inside the inner edge of the electron plasma sheet in the eveningside. For the second event observed in the nightside, the electric field is partly related to dipolarization and is considered as inductive. An electric field without coincident magnetic signatures is also observed. Spatial coherence of the electric field is not large when we check multispacecraft data. It is inferred that the electric field in the magnetotail penetrates inside the region 1 current, while it is not clear about the electric field within the region 2 current from our data. Then superposed epoch analyses using 71 storms are performed. Electric fields at R = 3.5-6R(E) and less than 25 degrees of magnetic latitudes are enhanced around the minimum Dst at all magnetic local times. Electric fields during the recovery phase decay on a time scale shorter than that of Dst index, which could be interpreted in terms of the relation between electric field and ring current during that storm phase. AC electric fields are generally larger than DC electric fields, indicating that the former component might play some role in accelerating ring current particles. These results will be useful to update our empirical electric field model.
C1 [Matsui, H.; Farrugia, C. J.; Torbert, R. B.] Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA.
[Puhl-Quinn, P. A.] AER Inc, Lexington, MA 02421 USA.
[Bonnell, J. W.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
[Jordanova, V. K.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Khotyaintsev, Yu. V.] Swedish Inst Space Phys, SE-75121 Uppsala, Sweden.
[Lindqvist, P. -A.] Royal Inst Technol, Alfven Lab, SE-10044 Stockholm, Sweden.
[Georgescu, E.] Max Planck Inst Sonnensyst Forsch, D-37191 Katlenburg Lindau, Germany.
RP Matsui, H (reprint author), Univ New Hampshire, Ctr Space Sci, 8 Coll Rd, Durham, NH 03824 USA.
EM hiroshi.matsui@unh.edu
RI Khotyaintsev, Yuri/C-4745-2008; Lindqvist, Per-Arne/G-1221-2016;
OI Lindqvist, Per-Arne/0000-0001-5617-9765; Jordanova,
Vania/0000-0003-0475-8743
FU NASA [NNX07AI03G, NNG05GG25G]
FX We thank the reviewers for the useful comments to improve the
manuscript. Helpful discussions with M. F. Thomsen and J. Goldstein are
acknowledged. EFW data are provided through Cluster Active Archive. We
would like to thank N. F. Ness and D. J. McComas for ACE MAG and SWEPAM
data, respectively. Both data are obtained from NASA CDA Website. Dst,
AL, AU, and SYM-H indices are provided by World Data Center at Kyoto
University. This work was supported by NASA grants NNX07AI03G and
NNG05GG25G.
NR 64
TC 3
Z9 3
U1 1
U2 5
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD NOV 20
PY 2010
VL 115
AR A11215
DI 10.1029/2010JA015450
PG 18
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 683PR
UT WOS:000284488200001
ER
PT J
AU Parra, M
An, XL
Mohandas, N
Conboy, JG
AF Parra, Marilyn
An, Xiuli
Mohandas, Narla
Conboy, John G.
TI In Vivo Analysis of Erythroid Protein 4.1 Pre-mRNA Splicing Mechanisms:
Use of Antisense Morpholinos to Assay Function of Deep Intron Regulatory
Elements
SO BLOOD
LA English
DT Meeting Abstract
CT 52nd Annual Meeting of the American-Society-of-Hematology (ASH)
CY DEC 04-07, 2010
CL Orlando, FL
SP Amer Soc Hematol
C1 [Parra, Marilyn; Conboy, John G.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
[An, Xiuli; Mohandas, Narla] New York Blood Ctr, New York, NY 10021 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC HEMATOLOGY
PI WASHINGTON
PA 1900 M STREET. NW SUITE 200, WASHINGTON, DC 20036 USA
SN 0006-4971
J9 BLOOD
JI Blood
PD NOV 19
PY 2010
VL 116
IS 21
BP 356
EP 356
PG 1
WC Hematology
SC Hematology
GA 752BH
UT WOS:000289662200816
ER
PT J
AU Guber, KH
Derrien, H
Leal, LC
Arbanas, G
Wiarda, D
Koehler, PE
Harvey, JA
AF Guber, K. H.
Derrien, H.
Leal, L. C.
Arbanas, G.
Wiarda, D.
Koehler, P. E.
Harvey, J. A.
TI Astrophysical reaction rates for Ni-58,Ni-60(n,gamma) from new neutron
capture cross section measurements
SO PHYSICAL REVIEW C
LA English
DT Article
ID NUCLEAR-DATA LIBRARY; TRANSMISSION; STATES
AB New neutron capture cross sections of Ni-58,Ni-60 were measured in the energy range from 100 eV to 600 keV using the Oak Ridge Electron Linear Accelerator. The combination of these new neutron capture data with previous transmission data allowed a resonance analysis up to 900 keV using R-matrix theory. The theoretically determined direct capture cross sections were included in the analyses. From these resonance parameters and the direct capture contribution, new (n,gamma) astrophysical reaction rates were determined over the entire energy range needed by the latest stellar models describing the so-called weak s process.
C1 [Guber, K. H.; Derrien, H.; Leal, L. C.; Arbanas, G.; Wiarda, D.] Oak Ridge Natl Lab, Nucl Sci & Technol Div, Oak Ridge, TN 37831 USA.
[Koehler, P. E.; Harvey, J. A.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
RP Guber, KH (reprint author), Oak Ridge Natl Lab, Nucl Sci & Technol Div, Oak Ridge, TN 37831 USA.
EM guberkh@ornl.gov
FU US Department of Energy [DE-AC05-00OR22725]; Office of Science
FX We would like to acknowledge C. Ausmus, D. Brasher, J. White, and T.
Bigelow who kept ORELA smoothly running. The enriched metallic capture
samples were prepared by C. Ausmus. ORNL is managed by UT-Battelle, LLC,
for the US Department of Energy under Contract No. DE-AC05-00OR22725.
The work that is presented in this paper was sponsored by the US
Department of Energy's Nuclear Criticality Safety Program and the Office
of Science.
NR 25
TC 11
Z9 11
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
EI 1089-490X
J9 PHYS REV C
JI Phys. Rev. C
PD NOV 19
PY 2010
VL 82
IS 5
AR 057601
DI 10.1103/PhysRevC.82.057601
PG 4
WC Physics, Nuclear
SC Physics
GA 713IV
UT WOS:000286732500004
ER
PT J
AU Mao, Z
Lin, JF
Jacobs, C
Watson, HC
Xiao, Y
Chow, P
Alp, EE
Prakapenka, VB
AF Mao, Z.
Lin, J. F.
Jacobs, C.
Watson, H. C.
Xiao, Y.
Chow, P.
Alp, E. E.
Prakapenka, V. B.
TI Electronic spin and valence states of Fe in CaIrO3-type silicate
post-perovskite in the Earth's lowermost mantle
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID X-RAY-EMISSION; FERRIC IRON; MOSSBAUER-SPECTROSCOPY; PHASE-TRANSITION;
FERROUS IRON; D''-LAYER; MGSIO3
AB The electronic spin and valence states of Fe in post-perovskite ((Mg0.75Fe0.25)SiO3) have been investigated by synchrotron X-ray diffraction, Mossbauer and X-ray emission spectroscopy at 142 GPa and 300 K. Rietveld refinement of the X-ray diffraction patterns revealed that our sample was dominated by CaIrO3-type post-perovskite. Combined Mossbauer and X-ray emission results show that Fe in post-perovskite is predominantly Fe2+ (70%) in the intermediate-spin state with extremely high quadrupole splitting of 3.77(25) mm/s. The remaining 30% Fe can be assigned to two sites. Compared with recent studies, our results indicate that the intermediate-spin Fe2+ is stabilized in CaIrO3-type post-perovskite over a wide range of Fe content, whereas the low-spin Fe3+ is more dominant in the 2 x 1 kinked post-perovskite structure. The characterization of these structural and compositional effects on the spin and valence states of Fe in post-perovskite can help in understanding the geochemical and geophysical behavior of the core-mantle region. Citation: Mao, Z., J. F. Lin, C. Jacobs, H. C. Watson, Y. Xiao, P. Chow, E. E. Alp, and V. B. Prakapenka (2010), Electronic spin and valence states of Fe in CaIrO3-type silicate post-perovskite in the Earth's lowermost mantle, Geophys. Res. Lett., 37, L22304, doi:10.1029/2010GL045021.
C1 [Mao, Z.; Lin, J. F.; Jacobs, C.] Univ Texas Austin, Dept Geol Sci, Jackson Sch Geosci, Austin, TX 78712 USA.
[Watson, H. C.] No Illinois Univ, Dept Geol & Environm Geosci, De Kalb, IL 60115 USA.
[Xiao, Y.; Chow, P.] Argonne Natl Lab, Adv Photon Source, Carnegie Inst Washington, HPCAT, Argonne, IL 60439 USA.
[Prakapenka, V. B.] Univ Chicago, Ctr Adv Radiat Sources, Chicago, IL 60637 USA.
RP Mao, Z (reprint author), Univ Texas Austin, Dept Geol Sci, Jackson Sch Geosci, Austin, TX 78712 USA.
EM zhu.mao@jsg.utexas.edu
RI Lin, Jung-Fu/B-4917-2011; Mao, Zhu/A-9015-2015;
OI Watson, Heather/0000-0003-4307-6518
FU US National Science Foundation [EAR-0838221]; Carnegie/DOE Alliance
Center (CDAC); NSF [EAR-0622171]; Jackson School of Geosciences;
DOE-NNSA; DOE-BES; Department of Energy [DE-FG02-94ER14466]
FX We acknowledge I. Kantor for experimental assistance and G. Vanko for
discussion on the data analysis. Z. Mao and J. F. Lin acknowledge
support from the US National Science Foundation (EAR-0838221), Energy
Frontier Research in Extreme Environments (EFree), and the Carnegie/DOE
Alliance Center (CDAC). C. Jacobs acknowledges NSF REU program and
Thomas and Ray Burke Student Job Program of the Jackson School of
Geosciences for financial support. This work was performed at HPCAT and
GSECARS, APS, ANL supported through funding from DOE-NNSA, DOE-BES,
NSF(EAR-0622171) and Department of Energy (DE-FG02-94ER14466).
NR 28
TC 13
Z9 13
U1 0
U2 10
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD NOV 19
PY 2010
VL 37
AR L22304
DI 10.1029/2010GL045021
PG 4
WC Geosciences, Multidisciplinary
SC Geology
GA 683MI
UT WOS:000284479500003
ER
PT J
AU Salameh, MA
Soares, AS
Navaneetham, D
Sinha, D
Walsh, PN
Radisky, ES
AF Salameh, Moh'd A.
Soares, Alexei S.
Navaneetham, Duraiswamy
Sinha, Dipali
Walsh, Peter N.
Radisky, Evette S.
TI Determinants of Affinity and Proteolytic Stability in Interactions of
Kunitz Family Protease Inhibitors with Mesotrypsin
SO JOURNAL OF BIOLOGICAL CHEMISTRY
LA English
DT Article
ID PANCREATIC TRYPSIN-INHIBITOR; FACTOR PATHWAY INHIBITOR;
COAGULATION-FACTOR-XIA; HUMAN BRAIN TRYPSIN; SERINE PROTEINASES;
PLASMINOGEN-ACTIVATOR; INTERSCAFFOLDING ADDITIVITY; GEL-ELECTROPHORESIS;
NEUTROPHIL ELASTASE; CRYSTAL-STRUCTURES
AB An important functional property of protein protease inhibitors is their stability to proteolysis. Mesotrypsin is a human trypsin that has been implicated in the proteolytic inactivation of several protein protease inhibitors. We have found that bovine pancreatic trypsin inhibitor (BPTI), a Kunitz protease inhibitor, inhibits mesotrypsin very weakly and is slowly proteolyzed, whereas, despite close sequence and structural homology, the Kunitz protease inhibitor domain of the amyloid precursor protein (APPI) binds to mesotrypsin 100 times more tightly and is cleaved 300 times more rapidly. To define features responsible for these differences, we have assessed the binding and cleavage by mesotrypsin of APPI and BPTI reciprocally mutated at two nonidentical residues that make direct contact with the enzyme. We find that Arg at P(1) (versus Lys) favors both tighter binding and more rapid cleavage, whereas Met (versus Arg) at P'(2) favors tighter binding but has minimal effect on cleavage. Surprisingly, we find that the APPI scaffold greatly enhances proteolytic cleavage rates, independently of the binding loop. We draw thermodynamic additivity cycles analyzing the interdependence of P(1) and P'(2) substitutions and scaffold differences, finding multiple instances in which the contributions of these features are nonadditive. We also report the crystal structure of the mesotrypsin.APPI complex, in which we find that the binding loop of APPI displays evidence of increased mobility compared with BPTI. Our data suggest that the enhanced vulnerability of APPI to mesotrypsin cleavage may derive from sequence differences in the scaffold that propagate increased flexibility and mobility to the binding loop.
C1 [Salameh, Moh'd A.; Radisky, Evette S.] Mayo Clin, Ctr Canc, Dept Canc Biol, Jacksonville, FL 32224 USA.
[Soares, Alexei S.] Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA.
[Navaneetham, Duraiswamy; Sinha, Dipali; Walsh, Peter N.] Temple Univ, Sch Med, Dept Med, Sol Sherry Thrombosis Res Ctr, Philadelphia, PA 19140 USA.
[Navaneetham, Duraiswamy; Sinha, Dipali; Walsh, Peter N.] Temple Univ, Sch Med, Dept Biochem, Sol Sherry Thrombosis Res Ctr, Philadelphia, PA 19140 USA.
RP Radisky, ES (reprint author), 310 Griffin Bldg,4500 San Pablo Rd, Jacksonville, FL 32224 USA.
EM radisky.evette@mayo.edu
RI Radisky, Evette/C-8526-2012; Soares, Alexei/F-4800-2014
OI Radisky, Evette/0000-0003-3121-109X; Soares, Alexei/0000-0002-6565-8503
FU National Institutes of Health [P50 CA091956-08, HL74124, HL46213];
Bankhead-Coley Florida Biomedical Research Program [07BN-07]; Department
of Defense [PC094054]; Offices of Biological and Environmental Research
and of Basic Energy Sciences of the United States Department of Energy;
National Center for Research Resources of the National Institutes of
Health
FX This work was supported, in whole or in part, by National Institutes of
Health Grants P50 CA091956-08 (to E. S. R.) and HL74124 and HL46213 (to
P. N. W.). This work was also supported by Bankhead-Coley Florida
Biomedical Research Program Grant 07BN-07 (to E. S. R.) and Department
of Defense Grant PC094054 (to E. S. R.). Diffraction data were measured
at beamlines X12-B, X12-C, and X25 of the National Synchrotron Light
Source, which is supported by the Offices of Biological and
Environmental Research and of Basic Energy Sciences of the United States
Department of Energy and the National Center for Research Resources of
the National Institutes of Health.
NR 93
TC 17
Z9 17
U1 0
U2 4
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 0021-9258
J9 J BIOL CHEM
JI J. Biol. Chem.
PD NOV 19
PY 2010
VL 285
IS 47
BP 36884
EP 36896
DI 10.1074/jbc.M110.171348
PG 13
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 679FE
UT WOS:000284146100026
PM 20861008
ER
PT J
AU Spanswick, E
Reeves, GD
Donovan, E
Friedel, RHW
AF Spanswick, E.
Reeves, G. D.
Donovan, E.
Friedel, R. H. W.
TI Injection region propagation outside of geosynchronous orbit
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID TAIL CURRENT DISRUPTION; ENERGETIC PARTICLE; SUBSTORM INJECTIONS;
BOUNDARY; PLASMA; FIELDS; SATELLITE; ELECTRONS; EXPANSION; MODEL
AB Using radial alignments of the Polar and Geotail satellites with the Los Alamos National Laboratory (LANL) fleet of geosynchronous observations, we investigate the radial propagation of the dispersionless substorm injection region outside 6.6 R(E). We compare the delay between injection onset observed at geosynchronous orbit and a second spacecraft in the same meridian (within 1 hr of Magnetic Local Time (MLT)) but at a different radial distance. Our results are consistent with earlier studies showing predominantly Earthward propagation of the substorm injection region at or near geosynchronous orbit. However, observations with spacecraft located further down tail (R > similar to 9 R(E)) conclusively show that tailward propagation of the dispersionless injection region must also occur. A statistical study of events using 10 years of Polar, Geotail, and LANL observations shows that dispersionsless injections are most likely to initiate at radial distances of 6.6-9 R(E). Injections typically start at this location and expand radially inward toward geosynchronous orbit and outward into the midtail central plasma sheet. Implications of these results on injection region models are discussed.
C1 [Spanswick, E.; Donovan, E.] Univ Calgary, Dept Phys & Astron, Calgary, AB T2N 1N4, Canada.
[Reeves, G. D.; Friedel, R. H. W.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Spanswick, E (reprint author), Univ Calgary, Dept Phys & Astron, 2500 Univ Dr NW, Calgary, AB T2N 1N4, Canada.
EM elspansw@lanl.gov
RI Friedel, Reiner/D-1410-2012; Reeves, Geoffrey/E-8101-2011;
OI Friedel, Reiner/0000-0002-5228-0281; Reeves,
Geoffrey/0000-0002-7985-8098; Donovan, Eric/0000-0002-8557-4155
FU Natural Sciences and Engineering Research Council (Canada); Alberta
Ingenuity Fund; Canadian Space Agency
FX We thank T. Nagai and T. Mukai for making the Geotail LEP and MFI data
available through the CDA Web data facility operated and maintained by
the NSSDC. The work of ES and ED is supported by the Natural Sciences
and Engineering Research Council (Canada), the Alberta Ingenuity Fund,
and the Canadian Space Agency.
NR 28
TC 4
Z9 4
U1 1
U2 3
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0148-0227
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD NOV 19
PY 2010
VL 115
AR A11214
DI 10.1029/2009JA015066
PG 7
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 683PP
UT WOS:000284488000001
ER
PT J
AU Kim, Y
Zhou, M
Moy, S
Morales, J
Cunningham, MA
Joachimiak, A
AF Kim, Youngchang
Zhou, Min
Moy, Shiu
Morales, Jennifer
Cunningham, Mark A.
Joachimiak, Andrzej
TI High-Resolution Structure of the Nitrile Reductase QueF Combined with
Molecular Simulations Provide Insight into Enzyme Mechanism
SO JOURNAL OF MOLECULAR BIOLOGY
LA English
DT Article
DE queuosine; oxidoreductase; QueF; nitrile reduction
ID TRANSFER-RNA MODIFICATION; QUEUOSINE-BIOSYNTHESIS; DYNAMICS;
OXIDOREDUCTASE; CYCLOHYDROLASE; NUCLEOSIDES; REFINEMENT; MODEL; FOLD
AB Here, we report the 1.53-angstrom crystal structure of the enzyme 7-cyano-7-deazaguanine reductase (QueF) from Vibrio cholerae, which is responsible for the complete reduction of a nitrile (C N) bond to a primary amine (H2C-NH2). At present, this is the only example of a biological pathway that includes reduction of a nitrile bond, establishing QueF as particularly noteworthy. The structure of the QueF monomer resembles two connected ferrodoxin-like domains that assemble into dimers. Ligands identified in the crystal structure suggest the likely binding conformation of the native substrates NADPH and 7-cyano-7-deazaguanine. We also report on a series of numerical simulations that have shed light on the mechanism by which this enzyme affects the transfer of four protons (and electrons) to the 7-cyano-7-deazaguanine substrate. In particular, the simulations suggest that the initial step of the catalytic process is the formation of a covalent adduct with the residue Cys194, in agreement with previous studies. The crystal structure also suggests that two conserved residues (His233 and Asp102) play an important role in the delivery of a fourth proton to the substrate. (C) 2010 Published by Elsevier Ltd.
C1 [Kim, Youngchang; Zhou, Min; Moy, Shiu; Joachimiak, Andrzej] Argonne Natl Lab, Midwest Ctr Struct Genom, Argonne, IL 60439 USA.
[Kim, Youngchang; Zhou, Min; Moy, Shiu; Joachimiak, Andrzej] Argonne Natl Lab, Struct Biol Ctr, Argonne, IL 60439 USA.
[Morales, Jennifer; Cunningham, Mark A.] Univ Texas Pan Amer, Edinburg, TX 78539 USA.
RP Cunningham, MA (reprint author), Argonne Natl Lab, Midwest Ctr Struct Genom, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM cunningham@utpa.edu; andrzejj@anl.gov
FU National Institutes of Health [GM074942]; U.S. Department of Energy,
Office of Biological and Environmental Research [DE-AC02-06CH11357];
National Science Foundation [HRD-0703584]
FX The authors would like to thank the members of the Midwest Center for
Structural Genomics and Structural Biology Center for their support and
Marat Valiev at Pacific Northwest National Laboratory for his help with
NWChem. This research has been funded in part by a grant from the
National Institutes of Health (GM074942) and by the U.S. Department of
Energy, Office of Biological and Environmental Research, under Contract
DE-AC02-06CH11357. One of us (M.A.C.) has also received support through
the National Science Foundation's FaST program (HRD-0703584),
administered by the Department of Educational Programs at Argonne
National Laboratory. The authors acknowledge the Texas Advanced
Computing Center at The University of Texas at Austin for providing HPC
resources that have contributed to the research results reported within
this article dagger.
NR 36
TC 19
Z9 20
U1 0
U2 10
PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 0022-2836
J9 J MOL BIOL
JI J. Mol. Biol.
PD NOV 19
PY 2010
VL 404
IS 1
BP 127
EP 137
DI 10.1016/j.jmb.2010.09.042
PG 11
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 686CI
UT WOS:000284674000010
PM 20875425
ER
PT J
AU Berman, AM
Bergman, RG
Ellman, JA
AF Berman, Ashley M.
Bergman, Robert G.
Ellman, Jonathan A.
TI Rh(I)-Catalyzed Direct Arylation of Azines
SO JOURNAL OF ORGANIC CHEMISTRY
LA English
DT Article
ID C-H BOND; CATALYZED DIRECT ARYLATION; HETEROAROMATIC-COMPOUNDS;
HETEROCYCLIC CHLORIDES; NITROGEN-HETEROCYCLES; CROSS-COUPLINGS;
N-OXIDES; ACTIVATION; FUNCTIONALIZATION; ALKYLATION
AB The Rh(I)-catalyzed direct arylation of azines has been developed Quinolines and 2-substituted pyridines couple with aryl bromides to efficiently afford ortho-arylated azine products using the commercially available and air-stable catalyst [RhCl(CO)(2)](2) Electron-deficient and electron-rich aromatic bromides couple in good yields, and hydroxyl, chloro, fluoro, trifluoromethyl, ether, and ketone functionalities are compatible with the reaction conditions Aroyl chlorides also serve as effective azine coupling partners to give ortho-arylation products via a decarbonylation pathway
C1 [Berman, Ashley M.; Bergman, Robert G.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Berman, Ashley M.; Bergman, Robert G.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
[Ellman, Jonathan A.] Yale Univ, Dept Chem, New Haven, CT 06520 USA.
RP Bergman, RG (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RI Ellman, Jonathan/C-7732-2013
FU NIH [GM069559]; DOE, Office of Basic Energy Sciences, Chemical Sciences
Division, U S Department of Energy [DE-AC03-76SF00098]; NRSA [GM082080]
FX This work was supported by NIH Grant GM069559 to J A E and the DOE,
Office of Basic Energy Sciences, Chemical Sciences Division, U S
Department of Energy, under Contract DE-AC03-76SF00098 to R G B A M B
was supported by a NRSA postdoctoral fellowship (GM082080)
NR 36
TC 52
Z9 52
U1 0
U2 24
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0022-3263
J9 J ORG CHEM
JI J. Org. Chem.
PD NOV 19
PY 2010
VL 75
IS 22
BP 7863
EP 7868
DI 10.1021/jo101793r
PG 6
WC Chemistry, Organic
SC Chemistry
GA 678MO
UT WOS:000284080300039
PM 21033740
ER
PT J
AU Fang, YP
He, W
Du, HF
Liu, HL
Wu, QO
Zhang, XQ
Yang, HT
Cheng, ZH
Shen, JA
AF Fang, Ya-Peng
He, Wei
Du, Hai-Feng
Liu, Hao-Liang
Wu, Qiong
Zhang, Xiang-Qun
Yang, Hai-Tao
Cheng, Zhao-Hua
Shen, Jian
TI Improvement of the uniformity and dipole ferromagnetism in Co nanodots
assemblies on Pb/Si(111) via step tuned dimensionality variation
SO NANOTECHNOLOGY
LA English
DT Article
ID 2-DIMENSIONAL ARRAYS; FE; PARTICLES; SUPERPARAMAGNETISM; MAGNETISM;
CU(111); FILMS; SHAPE
AB We fabricated quasi-one-dimensional Co nanochain assemblies and two-dimensional Co nanodot assemblies on Pb/Si(111) substrates by step decoration. The morphology and magnetic properties of these two kinds of Co nanodot assemblies were investigated by in situ scanning tunneling microscopy and magneto-optical Kerr effect measurements. It was found that the steps cannot only improve the uniformity of the Co nanodots, but also increase the critical temperature T(c). Monte Carlo simulation indicates that the ferromagnetism mainly originates from the dipolar interactions and the critical temperature T(c) can be enhanced by introducing an in-plane uniaxial magnetic anisotropy via the step tuned dimensionality variation of the nanodot assemblies.
C1 [Fang, Ya-Peng; He, Wei; Du, Hai-Feng; Liu, Hao-Liang; Wu, Qiong; Zhang, Xiang-Qun; Yang, Hai-Tao; Cheng, Zhao-Hua] Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China.
[Fang, Ya-Peng; He, Wei; Du, Hai-Feng; Liu, Hao-Liang; Wu, Qiong; Zhang, Xiang-Qun; Yang, Hai-Tao; Cheng, Zhao-Hua] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
[Shen, Jian] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Cheng, ZH (reprint author), Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China.
EM zhcheng@aphy.iphy.ac.cn
FU National Basic Research Program of China (973 program) [2009CB929201,
2010CB934202]; National Natural Sciences Foundation of China [50931006,
50721001, 10774179]
FX This work was supported by the National Basic Research Program of China
(973 program, Grant Nos 2009CB929201 and 2010CB934202) and the National
Natural Sciences Foundation of China (50931006, 50721001, 10774179).
NR 26
TC 3
Z9 3
U1 2
U2 13
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0957-4484
J9 NANOTECHNOLOGY
JI Nanotechnology
PD NOV 19
PY 2010
VL 21
IS 46
AR 465703
DI 10.1088/0957-4484/21/46/465703
PG 7
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA 671HF
UT WOS:000283491000017
PM 20972310
ER
PT J
AU Decca, RS
Fischbach, E
Klimchitskaya, GL
Krause, DE
Lopez, D
Mostepanenko, VM
AF Decca, R. S.
Fischbach, E.
Klimchitskaya, G. L.
Krause, D. E.
Lopez, D.
Mostepanenko, V. M.
TI Possibility of measuring the thermal Casimir interaction between a plate
and a cylinder attached to a micromachined oscillator
SO PHYSICAL REVIEW A
LA English
DT Article
ID LONG-RANGE INTERACTIONS; MU-M; FORCE; CONSTRAINTS; PHYSICS; METAL
AB We investigate the possibility of measuring the thermal Casimir force and its gradient in the configuration of a plate and a microfabricated cylinder attached to a micromachined oscillator. The Lifshitz-type formulas in this configuration are derived using the proximity force approximation. The accuracy of the obtained expressions is determined from a comparison with exact results available in ideal metal case. Computations of the thermal correction to both the Casimir force and its gradient are performed in the framework of different theoretical approaches proposed in the literature. The correction to the Casimir force and its gradient due to lack of parallelism of the plate and cylinder is determined using the nonmultiplicative approach. The error introduced in the theory due to the finite length of the cylinder is estimated. We propose that both static and dynamic experiments measuring the thermal Casimir interaction between a cylinder and a plate using a micromachined oscillator can shed additional light on the thermal Casimir force problem. Specifically, it is shown that the static experiment is better adapted for the measurement of thermal effects.
C1 [Decca, R. S.] Indiana Univ Purdue Univ, Dept Phys, Indianapolis, IN 46202 USA.
[Fischbach, E.; Krause, D. E.] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA.
[Klimchitskaya, G. L.] NW Tech Univ, St Petersburg 191065, Russia.
[Krause, D. E.] Wabash Coll, Dept Phys, Crawfordsville, IN 47933 USA.
[Lopez, D.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Mostepanenko, V. M.] Noncommercial Partnership Sci Instruments, Moscow 103905, Russia.
RP Decca, RS (reprint author), Indiana Univ Purdue Univ, Dept Phys, Indianapolis, IN 46202 USA.
RI Krause, Dennis/O-3170-2013
FU NSF [PHY-0701236]; LANL [49423-001-07]; DARPA [09-Y557]; DOE
[DE-76ER071428]; Department of Physics, Purdue University; Russian
Ministry of Education [P-184]
FX R.S.D. acknowledges NSF support through Grant No. PHY-0701236 and LANL
support through Contract No. 49423-001-07. D.L. and R.S.D. acknowledge
support from DARPA Grant No. 09-Y557. E.F. was supported in part by the
DOE under Grant No. DE-76ER071428. G.L.K. and V.M.M. are grateful to the
Department of Physics, Purdue University, for financial support. G.L.K.
was also partially supported by Russian Ministry of Education Grant No.
P-184.
NR 70
TC 12
Z9 12
U1 1
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1050-2947
J9 PHYS REV A
JI Phys. Rev. A
PD NOV 19
PY 2010
VL 82
IS 5
AR 052515
DI 10.1103/PhysRevA.82.052515
PG 12
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 682IU
UT WOS:000284395600005
ER
PT J
AU Kurita, N
Lee, HO
Tokiwa, Y
Miclea, CF
Bauer, ED
Ronning, F
Thompson, JD
Fisk, Z
Ho, PC
Maple, MB
Sengupta, P
Vekhter, I
Movshovich, R
AF Kurita, Nobuyuki
Lee, Han-Oh
Tokiwa, Yoshi
Miclea, Corneliu F.
Bauer, Eric D.
Ronning, Filip
Thompson, J. D.
Fisk, Zachary
Ho, Pei-Chun
Maple, M. Brian
Sengupta, Pinaki
Vekhter, Ilya
Movshovich, Roman
TI Thermal and magnetic properties of the low-temperature antiferromagnet
Ce4Pt12Sn25
SO PHYSICAL REVIEW B
LA English
DT Article
ID FERMI-LIQUID BEHAVIOR; KONDO-LATTICE; ELECTRIC-FIELDS; DIAGRAM; ALLOYS;
MODEL; HEAT
AB We report specific heat (C) and magnetization (M) of single crystalline Ce4Pt12Sn25 at temperature down to similar to 50 mK and in fields up to 3 T. C/T exhibits a sharp anomaly at 180 mK, with a large Delta C/T similar to 30 J/mol Ce K-2, which, together with the corresponding cusplike magnetization anomaly, indicates an antiferromagnetic (AFM) ground state with a Neel temperature T-N = 180 m K. Numerical calculations based on a Heisenberg model reproduce both zero-field C and M data, thus placing Ce4Pt12Sn25 in the weak exchange coupling J < J(c) limit of the Doniach diagram, with a very small Kondo scale T-K << T-N. Magnetic field suppresses the AFM state at H* approximate to 0.7 T, much more effectively than expected from the Heisenberg model, indicating additional effects possibly due to frustration or residual Kondo screening.
C1 [Kurita, Nobuyuki; Lee, Han-Oh; Tokiwa, Yoshi; Miclea, Corneliu F.; Bauer, Eric D.; Ronning, Filip; Thompson, J. D.; Sengupta, Pinaki; Movshovich, Roman] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Lee, Han-Oh; Fisk, Zachary] Univ Calif Irvine, Irvine, CA 92697 USA.
[Ho, Pei-Chun; Maple, M. Brian] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
[Ho, Pei-Chun] Calif State Univ Fresno, Dept Phys, Fresno, CA 93740 USA.
[Sengupta, Pinaki] Nanyang Technol Univ, Sch Phys & Math Sci, Singapore 637371, Singapore.
[Vekhter, Ilya] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA.
RP Kurita, N (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
RI Miclea, Corneliu Florin/C-5047-2011; Bauer, Eric/D-7212-2011; Vekhter,
Ilya/M-1780-2013; Sengupta, Pinaki/B-6999-2011; Tokiwa,
Yoshifumi/P-6593-2015
OI Tokiwa, Yoshifumi/0000-0002-6294-7879
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Materials Sciences and Engineering; U.S. National Science Foundation
[DMR-0802478]; U.S. DOE [DE-FG02-08ER46492]
FX We would like to thank Hironori Sakai for useful discussions. Work at
Los Alamos was performed under the auspices of the U.S. Department of
Energy, Office of Basic Energy Sciences, Division of Materials Sciences
and Engineering. Research at UCSD was supported by the U.S. National
Science Foundation under Grant No. DMR-0802478. I.V. was supported in
part by the U.S. DOE under Grant No. DE-FG02-08ER46492.
NR 35
TC 3
Z9 3
U1 0
U2 10
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 19
PY 2010
VL 82
IS 17
AR 174426
DI 10.1103/PhysRevB.82.174426
PG 7
WC Physics, Condensed Matter
SC Physics
GA 682JI
UT WOS:000284397500006
ER
PT J
AU Wang, J
Beeli, P
Ren, Y
Zhao, GM
AF Wang, Jun
Beeli, Pieder
Ren, Yang
Zhao, Guo-meng
TI Giant magnetic moment enhancement of nickel nanoparticles embedded in
multiwalled carbon nanotubes
SO PHYSICAL REVIEW B
LA English
DT Article
ID GRAPHITE; FERROMAGNETISM; GRAPHENE
AB report a giant magnetic moment enhancement of ferromagnetic nickel nanoparticles (11 nm) embedded in multiwalled carbon nanotubes (MWCNTs). High-energy synchrotron x-ray diffraction experiment and chemical analysis are used to accurately determine the ferromagnetic nickel concentration. Magnetic measurements show that the room-temperature saturation magnetization of the nickel nanoparticles embedded in the MWCNTs is enhanced by a factor of about 3.4 +/- 1.0 as compared with what they would be expected to have for free nanoparticles. The giant moment enhancement is unlikely to be explained by a magnetic proximity effect but possibly arise from the interplay between ferromagnetism in nickel nanoparticles and strong diamagnetism in multiwalled carbon nanotubes.
C1 [Wang, Jun; Zhao, Guo-meng] Ningbo Univ, Fac Sci, Dept Phys, Ningbo 315211, Zhejiang, Peoples R China.
[Beeli, Pieder; Zhao, Guo-meng] Calif State Univ Los Angeles, Dept Phys & Astron, Los Angeles, CA 90032 USA.
[Ren, Yang] Argonne Natl Lab, Xray Sci Div, Adv Photon Source, Argonne, IL 60439 USA.
RP Wang, J (reprint author), Ningbo Univ, Fac Sci, Dept Phys, Ningbo 315211, Zhejiang, Peoples R China.
EM gzhao2@calstatela.edu
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-AC02-06CH11357]; National Natural Science Foundation of
China [10874095]; Science Foundation of China, Zhejiang [Y407267,
2009C31149]; Natural Science Foundation of Ningbo [2008B10051,
2009B21003]; K. C. Wong Magna Foundation; Y. G. Bao's Foundation
FX We thank M. Du and F. M. Zhou for the elemental analyses using ICP-MS.
We also thank the Palmdale Institute of Technology for the use of the
VSM. Use of the Advanced Photon Source was supported by the U.S.
Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract No. DE-AC02-06CH11357. This work was supported
by the National Natural Science Foundation of China(Grant No. 10874095),
the Science Foundation of China, Zhejiang (Grants No. Y407267 and No.
2009C31149), the Natural Science Foundation of Ningbo (Grants No.
2008B10051 and No. 2009B21003), K. C. Wong Magna Foundation, and Y. G.
Bao's Foundation.
NR 17
TC 11
Z9 11
U1 0
U2 12
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 19
PY 2010
VL 82
IS 19
AR 193410
DI 10.1103/PhysRevB.82.193410
PG 4
WC Physics, Condensed Matter
SC Physics
GA 682JW
UT WOS:000284399700002
ER
PT J
AU Daniel, SF
Linder, EV
AF Daniel, Scott F.
Linder, Eric V.
TI Confronting general relativity with further cosmological data
SO PHYSICAL REVIEW D
LA English
DT Article
ID MICROWAVE; PARAMETERS; SPECTRA; GROWTH
AB Deviations from general relativity in order to explain cosmic acceleration generically have both time and scale-dependent signatures in cosmological data. We extend our previous work by investigating model-independent gravitational deviations in bins of redshift and length scale, by incorporating further cosmological probes such as temperature-galaxy and galaxy-galaxy cross-correlations, and by examining correlations between deviations. Markov Chain Monte Carlo likelihood analysis of the model-independent parameters fitting current data indicates that at low redshift general relativity deviates from the best fit at the 99% confidence level. We trace this to two different properties of the CFHTLS weak lensing data set and demonstrate that COSMOS weak lensing data does not show such deviation. Upcoming galaxy survey data will greatly improve the ability to test time and scale-dependent extensions to gravity and we calculate the constraints that the BigBOSS galaxy redshift survey could enable.
C1 [Daniel, Scott F.; Linder, Eric V.] Ewha Womans Univ, Inst Early Universe, Seoul, South Korea.
[Linder, Eric V.] Lawrence Berkeley Natl Lab, Berkeley, CA USA.
[Linder, Eric V.] Univ Calif Berkeley, Berkeley Ctr Cosmol Phys, Berkeley, CA 94720 USA.
RP Daniel, SF (reprint author), Ewha Womans Univ, Inst Early Universe, Seoul, South Korea.
FU World Class University through the National Research Foundation,
Ministry of Education, Science and Technology of Korea
[R32-2009-000-10130-0]; Office of Science, Office of High Energy
Physics, of the U.S. Department of Energy [DE-AC02-05CH11231]
FX We thank Tristan Smith for helpful discussions and insight and Chanju
Kim for timely hardware fixes. We acknowledge use of NASA's Legacy
Archive for Microwave Background Data Analysis (LAMBDA). This work has
been supported by the World Class University Grant No.
R32-2009-000-10130-0 through the National Research Foundation, Ministry
of Education, Science and Technology of Korea. E.L. has been supported
in part by the Director, Office of Science, Office of High Energy
Physics, of the U.S. Department of Energy under Contract No.
DE-AC02-05CH11231.
NR 29
TC 41
Z9 41
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 19
PY 2010
VL 82
IS 10
AR 103523
DI 10.1103/PhysRevD.82.103523
PG 13
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 682KW
UT WOS:000284403400002
ER
PT J
AU Sanchez, PD
Lees, JP
Poireau, V
Prencipe, E
Tisserand, V
Tico, JG
Grauges, E
Martinelli, M
Palano, A
Pappagallo, M
Eigen, G
Stugu, B
Sun, L
Battaglia, M
Brown, DN
Hooberman, B
Kerth, LT
Kolomensky, YG
Lynch, G
Osipenkov, IL
Tanabe, T
Hawkes, CM
Watson, AT
Koch, H
Schroeder, T
Asgeirsson, DJ
Hearty, C
Mattison, TS
McKenna, JA
Khan, A
Randle-Conde, A
Blinov, VE
Buzykaev, AR
Druzhinin, VP
Golubev, VB
Onuchin, AP
Serednyakov, SI
Skovpen, YI
Solodov, EP
Todyshev, KY
Yushkov, AN
Bondioli, M
Curry, S
Kirkby, D
Lankford, AJ
Mandelkern, M
Martin, EC
Stoker, DP
Atmacan, H
Gary, JW
Liu, F
Long, O
Vitug, GM
Campagnari, C
Hong, TM
Kovalskyi, D
Richman, JD
Eisner, AM
Heusch, CA
Kroseberg, J
Lockman, WS
Martinez, AJ
Schalk, T
Schumm, BA
Seiden, A
Winstrom, LO
Cheng, CH
Doll, DA
Echenard, B
Hitlin, DG
Ongmongkolkul, P
Porter, FC
Rakitin, AY
Andreassen, R
Dubrovin, MS
Mancinelli, G
Meadows, BT
Sokoloff, MD
Bloom, PC
Ford, WT
Gaz, A
Hirschauer, JF
Nagel, M
Nauenberg, U
Smith, JG
Wagner, SR
Ayad, R
Toki, WH
Karbach, TM
Merkel, J
Petzold, A
Spaan, B
Wacker, K
Kobel, MJ
Schubert, KR
Schwierz, R
Bernard, D
Verderi, M
Clark, PJ
Playfer, S
Watson, JE
Andreotti, M
Bettoni, D
Bozzi, C
Calabrese, R
Cecchi, A
Cibinetto, G
Fioravanti, E
Franchini, P
Luppi, E
Munerato, M
Negrini, M
Petrella, A
Piemontese, L
Baldini-Ferroli, R
Calcaterra, A
de Sangro, R
Finocchiaro, G
Nicolaci, M
Pacetti, S
Patteri, P
Peruzzi, IM
Piccolo, M
Rama, M
Zallo, A
Contri, R
Guido, E
Lo Vetere, M
Monge, MR
Passaggio, S
Patrignani, C
Robutti, E
Tosi, S
Bhuyan, B
Morii, M
Adametz, A
Marks, J
Schenk, S
Uwer, U
Bernlochner, FU
Lacker, HM
Lueck, T
Volk, A
Dauncey, PD
Tibbetts, M
Behera, PK
Mallik, U
Chen, C
Cochran, J
Crawley, HB
Dong, L
Meyer, WT
Prell, S
Rosenberg, EI
Rubin, AE
Gao, YY
Gritsan, AV
Guo, ZJ
Arnaud, N
Davier, M
Derkach, D
da Costa, JF
Grosdidier, G
Le Diberder, F
Lutz, AM
Malaescu, B
Perez, A
Roudeau, P
Schune, MH
Serrano, J
Sordini, V
Stocchi, A
Wang, L
Wormser, G
Lange, DJ
Wright, DM
Bingham, I
Burke, JP
Chavez, CA
Coleman, JP
Fry, JR
Gabathuler, E
Gamet, R
Hutchcroft, DE
Payne, DJ
Touramanis, C
Bevan, AJ
Di Lodovico, F
Sacco, R
Sigamani, M
Cowan, G
Paramesvaran, S
Wren, AC
Brown, DN
Davis, CL
Denig, AG
Fritsch, M
Gradl, W
Hafner, A
Alwyn, KE
Bailey, D
Barlow, RJ
Jackson, G
Lafferty, GD
West, TJ
Anderson, J
Cenci, R
Jawahery, A
Roberts, DA
Simi, G
Tuggle, JM
Dallapiccola, C
Salvati, E
Cowan, R
Dujmic, D
Fisher, PH
Sciolla, G
Zhao, M
Lindemann, D
Patel, PM
Robertson, SH
Schram, M
Biassoni, P
Lazzaro, A
Lombardo, V
Palombo, F
Stracka, S
Cremaldi, L
Godang, R
Kroeger, R
Sonnek, P
Summers, DJ
Zhao, HW
Nguyen, X
Simard, M
Taras, P
De Nardo, G
Monorchio, D
Onorato, G
Sciacca, C
Raven, G
Snoek, HL
Jessop, CP
Knoepfel, KJ
LoSecco, JM
Wang, WF
Corwin, LA
Honscheid, K
Kass, R
Morris, JP
Rahimi, AM
Blount, NL
Brau, J
Frey, R
Igonkina, O
Kolb, JA
Rahmat, R
Sinev, NB
Strom, D
Strube, J
Torrence, E
Castelli, G
Feltresi, E
Gagliardi, N
Margoni, M
Morandin, M
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Ben-Haim, E
Bonneaud, GR
Briand, H
Calderini, G
Chauveau, J
Hamon, O
Leruste, P
Marchiori, G
Ocariz, J
Prendki, J
Sitt, S
Biasini, M
Manoni, E
Angelini, C
Batignani, G
Bettarini, S
Carpinelli, M
Casarosa, G
Cervelli, A
Forti, F
Giorgi, MA
Lusiani, A
Neri, N
Paoloni, E
Rizzo, G
Walsh, JJ
Pegna, DL
Lu, C
Olsen, J
Smith, AJS
Telnov, AV
Anulli, F
Baracchini, E
Cavoto, G
Faccini, R
Ferrarotto, F
Ferroni, F
Gaspero, M
Gioi, LL
Mazzoni, MA
Piredda, G
Renga, F
Ebert, M
Hartmann, T
Leddig, T
Schroder, H
Waldi, R
Adye, T
Franek, B
Olaiya, EO
Wilson, FF
Emery, S
de Monchenault, GH
Vasseur, G
Yeche, C
Zito, M
Allen, MT
Aston, D
Bard, DJ
Bartoldus, R
Benitez, JF
Cartaro, C
Convery, MR
Dorfan, J
Dubois-Felsmann, GP
Dunwoodie, W
Field, RC
Sevilla, MF
Fulsom, BG
Gabareen, AM
Graham, MT
Grenier, P
Hast, C
Innes, WR
Kelsey, MH
Kim, H
Kim, P
Kocian, ML
Leith, DWGS
Li, S
Lindquist, B
Luitz, S
Luth, V
Lynch, HL
MacFarlane, DB
Marsiske, H
Muller, DR
Neal, H
Nelson, S
O'Grady, CP
Ofte, I
Perl, M
Pulliam, T
Ratcliff, BN
Roodman, A
Salnikov, AA
Santoro, V
Schindler, RH
Schwiening, J
Snyder, A
Su, D
Sullivan, MK
Sun, S
Suzuki, K
Thompson, JM
Va'vra, J
Wagner, AP
Weaver, M
West, CA
Wisniewski, WJ
Wittgen, M
Wright, DH
Wulsin, HW
Yarritu, AK
Young, CC
Ziegler, V
Chen, XR
Park, W
Purohit, MV
White, RM
Wilson, JR
Sekula, SJ
Bellis, M
Burchat, PR
Edwards, AJ
Miyashita, TS
Ahmed, S
Alam, MS
Ernst, JA
Pan, B
Saeed, MA
Zain, SB
Guttman, N
Soffer, A
Lund, P
Spanier, SM
Eckmann, R
Ritchie, JL
Ruland, AM
Schilling, CJ
Schwitters, RF
Wray, BC
Izen, JM
Lou, XC
Bianchi, F
Gamba, D
Pelliccioni, M
Bomben, M
Lanceri, L
Vitale, L
Lopez-March, N
Martinez-Vidal, F
Milanes, DA
Oyanguren, A
Albert, J
Banerjee, S
Choi, HHF
Hamano, K
King, GJ
Kowalewski, R
Lewczuk, MJ
Nugent, IM
Roney, JM
Sobie, RJ
Gershon, TJ
Harrison, PF
Ilic, J
Latham, TE
Puccio, EMT
Band, HR
Chen, X
Dasu, S
Flood, KT
Pan, Y
Prepost, R
Vuosalo, CO
Wu, SL
AF Sanchez, P. del Amo
Lees, J. P.
Poireau, V.
Prencipe, E.
Tisserand, V.
Garra Tico, J.
Grauges, E.
Martinelli, M.
Palano, A.
Pappagallo, M.
Eigen, G.
Stugu, B.
Sun, L.
Battaglia, M.
Brown, D. N.
Hooberman, B.
Kerth, L. T.
Kolomensky, Yu. G.
Lynch, G.
Osipenkov, I. L.
Tanabe, T.
Hawkes, C. M.
Watson, A. T.
Koch, H.
Schroeder, T.
Asgeirsson, D. J.
Hearty, C.
Mattison, T. S.
McKenna, J. A.
Khan, A.
Randle-Conde, A.
Blinov, V. E.
Buzykaev, A. R.
Druzhinin, V. P.
Golubev, V. B.
Onuchin, A. P.
Serednyakov, S. I.
Skovpen, Yu. I.
Solodov, E. P.
Todyshev, K. Yu.
Yushkov, A. N.
Bondioli, M.
Curry, S.
Kirkby, D.
Lankford, A. J.
Mandelkern, M.
Martin, E. C.
Stoker, D. P.
Atmacan, H.
Gary, J. W.
Liu, F.
Long, O.
Vitug, G. M.
Campagnari, C.
Hong, T. M.
Kovalskyi, D.
Richman, J. D.
Eisner, A. M.
Heusch, C. A.
Kroseberg, J.
Lockman, W. S.
Martinez, A. J.
Schalk, T.
Schumm, B. A.
Seiden, A.
Winstrom, L. O.
Cheng, C. H.
Doll, D. A.
Echenard, B.
Hitlin, D. G.
Ongmongkolkul, P.
Porter, F. C.
Rakitin, A. Y.
Andreassen, R.
Dubrovin, M. S.
Mancinelli, G.
Meadows, B. T.
Sokoloff, M. D.
Bloom, P. C.
Ford, W. T.
Gaz, A.
Hirschauer, J. F.
Nagel, M.
Nauenberg, U.
Smith, J. G.
Wagner, S. R.
Ayad, R.
Toki, W. H.
Karbach, T. M.
Merkel, J.
Petzold, A.
Spaan, B.
Wacker, K.
Kobel, M. J.
Schubert, K. R.
Schwierz, R.
Bernard, D.
Verderi, M.
Clark, P. J.
Playfer, S.
Watson, J. E.
Andreotti, M.
Bettoni, D.
Bozzi, C.
Calabrese, R.
Cecchi, A.
Cibinetto, G.
Fioravanti, E.
Franchini, P.
Luppi, E.
Munerato, M.
Negrini, M.
Petrella, A.
Piemontese, L.
Baldini-Ferroli, R.
Calcaterra, A.
de Sangro, R.
Finocchiaro, G.
Nicolaci, M.
Pacetti, S.
Patteri, P.
Peruzzi, I. M.
Piccolo, M.
Rama, M.
Zallo, A.
Contri, R.
Guido, E.
Lo Vetere, M.
Monge, M. R.
Passaggio, S.
Patrignani, C.
Robutti, E.
Tosi, S.
Bhuyan, B.
Morii, M.
Adametz, A.
Marks, J.
Schenk, S.
Uwer, U.
Bernlochner, F. U.
Lacker, H. M.
Lueck, T.
Volk, A.
Dauncey, P. D.
Tibbetts, M.
Behera, P. K.
Mallik, U.
Chen, C.
Cochran, J.
Crawley, H. B.
Dong, L.
Meyer, W. T.
Prell, S.
Rosenberg, E. I.
Rubin, A. E.
Gao, Y. Y.
Gritsan, A. V.
Guo, Z. J.
Arnaud, N.
Davier, M.
Derkach, D.
da Costa, J. Firmino
Grosdidier, G.
Le Diberder, F.
Lutz, A. M.
Malaescu, B.
Perez, A.
Roudeau, P.
Schune, M. H.
Serrano, J.
Sordini, V.
Stocchi, A.
Wang, L.
Wormser, G.
Lange, D. J.
Wright, D. M.
Bingham, I.
Burke, J. P.
Chavez, C. A.
Coleman, J. P.
Fry, J. R.
Gabathuler, E.
Gamet, R.
Hutchcroft, D. E.
Payne, D. J.
Touramanis, C.
Bevan, A. J.
Di Lodovico, F.
Sacco, R.
Sigamani, M.
Cowan, G.
Paramesvaran, S.
Wren, A. C.
Brown, D. N.
Davis, C. L.
Denig, A. G.
Fritsch, M.
Gradl, W.
Hafner, A.
Alwyn, K. E.
Bailey, D.
Barlow, R. J.
Jackson, G.
Lafferty, G. D.
West, T. J.
Anderson, J.
Cenci, R.
Jawahery, A.
Roberts, D. A.
Simi, G.
Tuggle, J. M.
Dallapiccola, C.
Salvati, E.
Cowan, R.
Dujmic, D.
Fisher, P. H.
Sciolla, G.
Zhao, M.
Lindemann, D.
Patel, P. M.
Robertson, S. H.
Schram, M.
Biassoni, P.
Lazzaro, A.
Lombardo, V.
Palombo, F.
Stracka, S.
Cremaldi, L.
Godang, R.
Kroeger, R.
Sonnek, P.
Summers, D. J.
Zhao, H. W.
Nguyen, X.
Simard, M.
Taras, P.
De Nardo, G.
Monorchio, D.
Onorato, G.
Sciacca, C.
Raven, G.
Snoek, H. L.
Jessop, C. P.
Knoepfel, K. J.
LoSecco, J. M.
Wang, W. F.
Corwin, L. A.
Honscheid, K.
Kass, R.
Morris, J. P.
Rahimi, A. M.
Blount, N. L.
Brau, J.
Frey, R.
Igonkina, O.
Kolb, J. A.
Rahmat, R.
Sinev, N. B.
Strom, D.
Strube, J.
Torrence, E.
Castelli, G.
Feltresi, E.
Gagliardi, N.
Margoni, M.
Morandin, M.
Posocco, M.
Rotondo, M.
Simonetto, F.
Stroili, R.
Ben-Haim, E.
Bonneaud, G. R.
Briand, H.
Calderini, G.
Chauveau, J.
Hamon, O.
Leruste, Ph.
Marchiori, G.
Ocariz, J.
Prendki, J.
Sitt, S.
Biasini, M.
Manoni, E.
Angelini, C.
Batignani, G.
Bettarini, S.
Carpinelli, M.
Casarosa, G.
Cervelli, A.
Forti, F.
Giorgi, M. A.
Lusiani, A.
Neri, N.
Paoloni, E.
Rizzo, G.
Walsh, J. J.
Pegna, D. Lopes
Lu, C.
Olsen, J.
Smith, A. J. S.
Telnov, A. V.
Anulli, F.
Baracchini, E.
Cavoto, G.
Faccini, R.
Ferrarotto, F.
Ferroni, F.
Gaspero, M.
Gioi, L. Li
Mazzoni, M. A.
Piredda, G.
Renga, F.
Ebert, M.
Hartmann, T.
Leddig, T.
Schroeder, H.
Waldi, R.
Adye, T.
Franek, B.
Olaiya, E. O.
Wilson, F. F.
Emery, S.
de Monchenault, G. Hamel
Vasseur, G.
Yeche, Ch.
Zito, M.
Allen, M. T.
Aston, D.
Bard, D. J.
Bartoldus, R.
Benitez, J. F.
Cartaro, C.
Convery, M. R.
Dorfan, J.
Dubois-Felsmann, G. P.
Dunwoodie, W.
Field, R. C.
Sevilla, M. Franco
Fulsom, B. G.
Gabareen, A. M.
Graham, M. T.
Grenier, P.
Hast, C.
Innes, W. R.
Kelsey, M. H.
Kim, H.
Kim, P.
Kocian, M. L.
Leith, D. W. G. S.
Li, S.
Lindquist, B.
Luitz, S.
Luth, V.
Lynch, H. L.
MacFarlane, D. B.
Marsiske, H.
Muller, D. R.
Neal, H.
Nelson, S.
O'Grady, C. P.
Ofte, I.
Perl, M.
Pulliam, T.
Ratcliff, B. N.
Roodman, A.
Salnikov, A. A.
Santoro, V.
Schindler, R. H.
Schwiening, J.
Snyder, A.
Su, D.
Sullivan, M. K.
Sun, S.
Suzuki, K.
Thompson, J. M.
Va'vra, J.
Wagner, A. P.
Weaver, M.
West, C. A.
Wisniewski, W. J.
Wittgen, M.
Wright, D. H.
Wulsin, H. W.
Yarritu, A. K.
Young, C. C.
Ziegler, V.
Chen, X. R.
Park, W.
Purohit, M. V.
White, R. M.
Wilson, J. R.
Sekula, S. J.
Bellis, M.
Burchat, P. R.
Edwards, A. J.
Miyashita, T. S.
Ahmed, S.
Alam, M. S.
Ernst, J. A.
Pan, B.
Saeed, M. A.
Zain, S. B.
Guttman, N.
Soffer, A.
Lund, P.
Spanier, S. M.
Eckmann, R.
Ritchie, J. L.
Ruland, A. M.
Schilling, C. J.
Schwitters, R. F.
Wray, B. C.
Izen, J. M.
Lou, X. C.
Bianchi, F.
Gamba, D.
Pelliccioni, M.
Bomben, M.
Lanceri, L.
Vitale, L.
Lopez-March, N.
Martinez-Vidal, F.
Milanes, D. A.
Oyanguren, A.
Albert, J.
Banerjee, Sw.
Choi, H. H. F.
Hamano, K.
King, G. J.
Kowalewski, R.
Lewczuk, M. J.
Nugent, I. M.
Roney, J. M.
Sobie, R. J.
Gershon, T. J.
Harrison, P. F.
Ilic, J.
Latham, T. E.
Puccio, E. M. T.
Band, H. R.
Chen, X.
Dasu, S.
Flood, K. T.
Pan, Y.
Prepost, R.
Vuosalo, C. O.
Wu, S. L.
CA BaBar Collaboration
TI Search for B+ -> (D+K0) and B+ -> (D+K0) decays
SO PHYSICAL REVIEW D
LA English
DT Article
AB We report a search for the rare decays B+ -> (D+K0) and B+ -> D+K*(0) in an event sample of approximately 465 x 10(6) B (B) over bar pairs collected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) collider at SLAC National Accelerator Laboratory. We find no significant evidence for either mode and we set 90% probability upper limits on the branching fractions of B(B+ -> (D+K0)) < 2.9 x 10(-6) and B(B+ -> D+K*(0)) < 3.0 x 10(-6)
C1 [Sanchez, P. del Amo; Lees, J. P.; Poireau, V.; Prencipe, E.; Tisserand, V.; Ayad, R.; Toki, W. H.] Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France.
[Garra Tico, J.; Grauges, E.] Univ Barcelona, Fac Fis, Depe ECM, E-08028 Barcelona, Spain.
[Martinelli, M.; Palano, A.; Pappagallo, M.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Martinelli, M.; Palano, A.; Pappagallo, M.] Univ Bari, Dipartimento Fis, I-70126 Bari, Italy.
[Eigen, G.; Stugu, B.; Sun, L.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway.
[Battaglia, M.; Brown, D. N.; Hooberman, B.; Kerth, L. T.; Kolomensky, Yu. G.; Lynch, G.; Osipenkov, I. L.; Tanabe, T.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Hawkes, C. M.; Watson, A. T.] Univ Birmingham, Birmingham B15 2TT, W Midlands, England.
[Koch, H.; Schroeder, T.] Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany.
[Asgeirsson, D. J.; Hearty, C.; Mattison, T. S.; McKenna, J. A.] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada.
[Khan, A.; Randle-Conde, A.] Brunel Univ, Uxbridge UB8 3PH, Middx, England.
[Blinov, V. E.; Buzykaev, A. R.; Druzhinin, V. P.; Golubev, V. B.; Onuchin, A. P.; Serednyakov, S. I.; Skovpen, Yu. I.; Solodov, E. P.; Todyshev, K. Yu.; Yushkov, A. N.] Budker Inst Nucl Phys, Novosibirsk 630090, Russia.
[Bondioli, M.; Curry, S.; Kirkby, D.; Lankford, A. J.; Mandelkern, M.; Martin, E. C.; Stoker, D. P.] Univ Calif Irvine, Irvine, CA 92697 USA.
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[Campagnari, C.; Hong, T. M.; Kovalskyi, D.; Richman, J. D.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Eisner, A. M.; Heusch, C. A.; Kroseberg, J.; Lockman, W. S.; Martinez, A. J.; Schalk, T.; Schumm, B. A.; Seiden, A.; Winstrom, L. O.] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Cheng, C. H.; Doll, D. A.; Echenard, B.; Hitlin, D. G.; Ongmongkolkul, P.; Porter, F. C.; Rakitin, A. Y.] CALTECH, Pasadena, CA 91125 USA.
[Andreassen, R.; Dubrovin, M. S.; Mancinelli, G.; Meadows, B. T.; Sokoloff, M. D.] Univ Cincinnati, Cincinnati, OH 45221 USA.
[Sanchez, P. del Amo; Lees, J. P.; Poireau, V.; Prencipe, E.; Tisserand, V.; Ayad, R.; Toki, W. H.] Colorado State Univ, Ft Collins, CO 80523 USA.
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[Karbach, T. M.; Merkel, J.; Petzold, A.; Spaan, B.; Wacker, K.] Tech Univ Dortmund, D-44221 Dortmund, Germany.
[Kobel, M. J.; Schubert, K. R.; Schwierz, R.] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany.
[Bernard, D.; Verderi, M.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France.
[Clark, P. J.; Playfer, S.; Watson, J. E.] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
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[Andreotti, M.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Fioravanti, E.; Franchini, P.; Luppi, E.; Munerato, M.; Negrini, M.; Petrella, A.] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy.
[Baldini-Ferroli, R.; Calcaterra, A.; de Sangro, R.; Finocchiaro, G.; Nicolaci, M.; Pacetti, S.; Patteri, P.; Peruzzi, I. M.; Piccolo, M.; Rama, M.; Zallo, A.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[Contri, R.; Guido, E.; Lo Vetere, M.; Monge, M. R.; Passaggio, S.; Patrignani, C.; Robutti, E.; Tosi, S.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
[Contri, R.; Guido, E.; Lo Vetere, M.; Monge, M. R.; Patrignani, C.; Tosi, S.] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy.
[Bhuyan, B.] Indian Inst Technol Guwahati, Gauhati 781039, Assam, India.
[Morii, M.] Harvard Univ, Cambridge, MA 02138 USA.
[Adametz, A.; Marks, J.; Schenk, S.; Uwer, U.] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany.
[Bernlochner, F. U.; Lacker, H. M.; Lueck, T.; Volk, A.] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.
[Dauncey, P. D.; Tibbetts, M.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
[Behera, P. K.; Mallik, U.] Univ Iowa, Iowa City, IA 52242 USA.
[Chen, C.; Cochran, J.; Crawley, H. B.; Dong, L.; Meyer, W. T.; Prell, S.; Rosenberg, E. I.; Rubin, A. E.] Iowa State Univ, Ames, IA 50011 USA.
[Gao, Y. Y.; Gritsan, A. V.; Guo, Z. J.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
[Arnaud, N.; Davier, M.; Derkach, D.; da Costa, J. Firmino; Grosdidier, G.; Le Diberder, F.; Lutz, A. M.; Malaescu, B.; Perez, A.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wang, L.; Wormser, G.] CNRS, IN2P3, Lab Accelerateur Lineaire, F-91898 Orsay, France.
[Arnaud, N.; Davier, M.; Derkach, D.; da Costa, J. Firmino; Grosdidier, G.; Le Diberder, F.; Lutz, A. M.; Malaescu, B.; Perez, A.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wang, L.; Wormser, G.] Univ Paris 11, Ctr Sci Orsay, F-91898 Orsay, France.
[Lange, D. J.; Wright, D. M.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Bingham, I.; Burke, J. P.; Chavez, C. A.; Coleman, J. P.; Fry, J. R.; Gabathuler, E.; Gamet, R.; Hutchcroft, D. E.; Payne, D. J.; Touramanis, C.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
[Bevan, A. J.; Di Lodovico, F.; Sacco, R.; Sigamani, M.] Univ London, London E1 4NS, England.
[Cowan, G.; Paramesvaran, S.; Wren, A. C.] Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England.
[Brown, D. N.; Davis, C. L.] Univ Louisville, Louisville, KY 40292 USA.
[Denig, A. G.; Fritsch, M.; Gradl, W.; Hafner, A.] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany.
[Alwyn, K. E.; Bailey, D.; Barlow, R. J.; Jackson, G.; Lafferty, G. D.; West, T. J.] Univ Manchester, Manchester M13 9PL, Lancs, England.
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[Dallapiccola, C.; Salvati, E.] Univ Massachusetts, Amherst, MA 01003 USA.
[Cowan, R.; Dujmic, D.; Fisher, P. H.; Sciolla, G.; Zhao, M.] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA.
[Lindemann, D.; Patel, P. M.; Robertson, S. H.; Schram, M.] McGill Univ, Montreal, PQ H3A 2T8, Canada.
[Biassoni, P.; Lazzaro, A.; Lombardo, V.; Palombo, F.; Stracka, S.] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy.
[Biassoni, P.; Lazzaro, A.; Palombo, F.; Stracka, S.] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.
[Cremaldi, L.; Godang, R.; Kroeger, R.; Sonnek, P.; Summers, D. J.; Zhao, H. W.] Univ Mississippi, University, MS 38677 USA.
[Nguyen, X.; Simard, M.; Taras, P.] Univ Montreal, Montreal, PQ H3C 3J7, Canada.
[De Nardo, G.; Monorchio, D.; Onorato, G.; Sciacca, C.] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy.
[De Nardo, G.; Monorchio, D.; Onorato, G.; Sciacca, C.] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy.
[Raven, G.; Snoek, H. L.] Natl Inst Nucl Phys & High Energy Phys, NIKHEF, NL-1009 DB Amsterdam, Netherlands.
[Jessop, C. P.; Knoepfel, K. J.; LoSecco, J. M.; Wang, W. F.] Univ Notre Dame, Notre Dame, IN 46556 USA.
[Corwin, L. A.; Honscheid, K.; Kass, R.; Morris, J. P.; Rahimi, A. M.] Ohio State Univ, Columbus, OH 43210 USA.
[Blount, N. L.; Brau, J.; Frey, R.; Igonkina, O.; Kolb, J. A.; Rahmat, R.; Sinev, N. B.; Strom, D.; Strube, J.; Torrence, E.] Univ Oregon, Eugene, OR 97403 USA.
[Castelli, G.; Feltresi, E.; Gagliardi, N.; Margoni, M.; Simonetto, F.; Stroili, R.] Univ Padua, Dipartmento Fis, I-35131 Padua, Italy.
[Castelli, G.; Feltresi, E.; Gagliardi, N.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Ben-Haim, E.; Bonneaud, G. R.; Briand, H.; Calderini, G.; Chauveau, J.; Hamon, O.; Leruste, Ph.; Marchiori, G.; Ocariz, J.; Prendki, J.; Sitt, S.] Univ Paris 07, Univ Paris 06, CNRS, Lab Phys Nucl & Hautes Energies,IN2P3, F-75252 Paris, France.
[Biasini, M.; Manoni, E.] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy.
[Sordini, V.; Biasini, M.; Manoni, E.] Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Casarosa, G.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Lusiani, A.; Neri, N.; Paoloni, E.; Rizzo, G.; Walsh, J. J.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Casarosa, G.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Neri, N.; Paoloni, E.; Rizzo, G.] Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy.
[Lusiani, A.] Scuola Normale Super Pisa, I-56127 Pisa, Italy.
[Pegna, D. Lopes; Lu, C.; Olsen, J.; Smith, A. J. S.; Telnov, A. V.] Princeton Univ, Princeton, NJ 08544 USA.
[Anulli, F.; Baracchini, E.; Cavoto, G.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Gioi, L. Li; Mazzoni, M. A.; Piredda, G.; Renga, F.] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy.
[Baracchini, E.; Faccini, R.; Ferroni, F.; Gaspero, M.; Renga, F.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
[Ebert, M.; Hartmann, T.; Leddig, T.; Schroeder, H.; Waldi, R.] Univ Rostock, D-18051 Rostock, Germany.
[Adye, T.; Franek, B.; Olaiya, E. O.; Wilson, F. F.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Emery, S.; de Monchenault, G. Hamel; Vasseur, G.; Yeche, Ch.; Zito, M.] CEA, Ctr Saclay, SPP, Irfu, F-91191 Gif Sur Yvette, France.
[Allen, M. T.; Aston, D.; Bard, D. J.; Bartoldus, R.; Benitez, J. F.; Cartaro, C.; Convery, M. R.; Dorfan, J.; Dubois-Felsmann, G. P.; Dunwoodie, W.; Field, R. C.; Sevilla, M. Franco; Fulsom, B. G.; Gabareen, A. M.; Graham, M. T.; Grenier, P.; Hast, C.; Innes, W. R.; Kelsey, M. H.; Kim, H.; Kim, P.; Kocian, M. L.; Leith, D. W. G. S.; Li, S.; Lindquist, B.; Luitz, S.; Luth, V.; Lynch, H. L.; MacFarlane, D. B.; Marsiske, H.; Muller, D. R.; Neal, H.; Nelson, S.; O'Grady, C. P.; Ofte, I.; Perl, M.; Pulliam, T.; Ratcliff, B. N.; Roodman, A.; Salnikov, A. A.; Santoro, V.; Schindler, R. H.; Schwiening, J.; Snyder, A.; Su, D.; Sullivan, M. K.; Sun, S.; Suzuki, K.; Thompson, J. M.; Va'vra, J.; Wagner, A. P.; Weaver, M.; West, C. A.; Wisniewski, W. J.; Wittgen, M.; Wright, D. H.; Wulsin, H. W.; Yarritu, A. K.; Young, C. C.; Ziegler, V.] Stanford Linear Accelerator Ctr, Natl Accelerator Lab, Stanford, CA 94309 USA.
[Chen, X. R.; Park, W.; Purohit, M. V.; White, R. M.; Wilson, J. R.] Univ S Carolina, Columbia, SC 29208 USA.
[Sekula, S. J.] So Methodist Univ, Dallas, TX 75275 USA.
[Bellis, M.; Burchat, P. R.; Edwards, A. J.; Miyashita, T. S.] Stanford Univ, Stanford, CA 94305 USA.
[Ahmed, S.; Alam, M. S.; Ernst, J. A.; Pan, B.; Saeed, M. A.; Zain, S. B.] SUNY Albany, Albany, NY 12222 USA.
[Guttman, N.; Soffer, A.] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel.
[Lund, P.; Spanier, S. M.] Univ Tennessee, Knoxville, TN 37996 USA.
[Eckmann, R.; Ritchie, J. L.; Ruland, A. M.; Schilling, C. J.; Schwitters, R. F.; Wray, B. C.] Univ Texas Austin, Austin, TX 78712 USA.
[Izen, J. M.; Lou, X. C.] Univ Texas Dallas, Richardson, TX 75083 USA.
[Bianchi, F.; Gamba, D.; Pelliccioni, M.] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy.
[Bianchi, F.; Gamba, D.; Pelliccioni, M.] Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy.
[Bomben, M.; Lanceri, L.; Vitale, L.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Bomben, M.; Lanceri, L.; Vitale, L.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy.
[Lopez-March, N.; Martinez-Vidal, F.; Milanes, D. A.; Oyanguren, A.] Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain.
[Albert, J.; Banerjee, Sw.; Choi, H. H. F.; Hamano, K.; King, G. J.; Kowalewski, R.; Lewczuk, M. J.; Nugent, I. M.; Roney, J. M.; Sobie, R. J.] Univ Victoria, Victoria, BC V8W 3P6, Canada.
[Gershon, T. J.; Harrison, P. F.; Ilic, J.; Latham, T. E.; Puccio, E. M. T.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Band, H. R.; Chen, X.; Dasu, S.; Flood, K. T.; Pan, Y.; Prepost, R.; Wu, S. L.] Univ Wisconsin, Madison, WI 53706 USA.
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RP Sanchez, PD (reprint author), Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France.
RI dong, liaoyuan/A-5093-2015; Rizzo, Giuliana/A-8516-2015; Martinez Vidal,
F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere,
Maurizio/J-5049-2012; Lusiani, Alberto/N-2976-2015; Morandin,
Mauro/A-3308-2016; Lusiani, Alberto/A-3329-2016; Stracka,
Simone/M-3931-2015; Di Lodovico, Francesca/L-9109-2016; Pappagallo,
Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Frey,
Raymond/E-2830-2016; Luppi, Eleonora/A-4902-2015; White,
Ryan/E-2979-2015; Calabrese, Roberto/G-4405-2015; Neri,
Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo,
Marcello/I-6043-2012; de Sangro, Riccardo/J-2901-2012; Saeed, Mohammad
Alam/J-7455-2012; Negrini, Matteo/C-8906-2014; Patrignani,
Claudia/C-5223-2009; Monge, Maria Roberta/G-9127-2012; Oyanguren,
Arantza/K-6454-2014
OI Corwin, Luke/0000-0001-7143-3821; Lanceri, Livio/0000-0001-8220-3095;
Ebert, Marcus/0000-0002-3014-1512; Cibinetto,
Gianluigi/0000-0002-3491-6231; Hamel de Monchenault,
Gautier/0000-0002-3872-3592; dong, liaoyuan/0000-0002-4773-5050; Chen,
Chunhui /0000-0003-1589-9955; Raven, Gerhard/0000-0002-2897-5323;
Bellis, Matthew/0000-0002-6353-6043; Pacetti,
Simone/0000-0002-6385-3508; Sciacca, Crisostomo/0000-0002-8412-4072;
Adye, Tim/0000-0003-0627-5059; Rizzo, Giuliana/0000-0003-1788-2866;
Martinelli, Maurizio/0000-0003-4792-9178; Lafferty,
George/0000-0003-0658-4919; Faccini, Riccardo/0000-0003-2613-5141;
Cavoto, Gianluca/0000-0003-2161-918X; Strube, Jan/0000-0001-7470-9301;
Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky,
Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480;
Lusiani, Alberto/0000-0002-6876-3288; Morandin,
Mauro/0000-0003-4708-4240; Lusiani, Alberto/0000-0002-6876-3288;
Stracka, Simone/0000-0003-0013-4714; Di Lodovico,
Francesca/0000-0003-3952-2175; Pappagallo, Marco/0000-0001-7601-5602;
Calcaterra, Alessandro/0000-0003-2670-4826; Frey,
Raymond/0000-0003-0341-2636; Carpinelli, Massimo/0000-0002-8205-930X;
Paoloni, Eugenio/0000-0001-5969-8712; Luppi,
Eleonora/0000-0002-1072-5633; White, Ryan/0000-0003-3589-5900;
Calabrese, Roberto/0000-0002-1354-5400; Neri,
Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965;
Rotondo, Marcello/0000-0001-5704-6163; de Sangro,
Riccardo/0000-0002-3808-5455; Saeed, Mohammad Alam/0000-0002-3529-9255;
Negrini, Matteo/0000-0003-0101-6963; Patrignani,
Claudia/0000-0002-5882-1747; Monge, Maria Roberta/0000-0003-1633-3195;
Oyanguren, Arantza/0000-0002-8240-7300
FU SLAC; US Department of Energy; Natural Sciences and Engineering Research
Council (Canada); Commissariat a l'Energie Atomique and Institut
National de Physique Nucleaire et de Physique des Particules (France);
Bundesministerium fur Bildung und Forschung (Germany); Istituto
Nazionale di Fisica Nucleare (Italy); Foundation for Fundamental
Research on Matter (The Netherlands); Research Council of Norway;
Ministry of Education and Science of the Russian Federation; Ministerio
de Ciencia e Innovacion (Spain); Science and Technology Facilities
Council (United Kingdom); European Union; A. P. Sloan Foundation (USA);
Binational Science Foundation (USA-Israel); National Science Foundation;
Deutsche Forschungsgemeinschaft (Germany)
FX We are grateful for the extraordinary contributions of our PEP-II
colleagues in achieving the excellent luminosity and machine conditions
that have made this work possible. The success of this project also
relies critically on the expertise and dedication of the computing
organizations that support BABAR. The collaborating institutions wish to
thank SLAC for its support and the kind hospitality extended to them.
This work is supported by the US Department of Energy and National
Science Foundation, the Natural Sciences and Engineering Research
Council (Canada), the Commissariat a l'Energie Atomique and Institut
National de Physique Nucleaire et de Physique des Particules (France),
the Bundesministerium fur Bildung und Forschung and Deutsche
Forschungsgemeinschaft (Germany), the Istituto Nazionale di Fisica
Nucleare (Italy), the Foundation for Fundamental Research on Matter (The
Netherlands), the Research Council of Norway, the Ministry of Education
and Science of the Russian Federation, Ministerio de Ciencia e
Innovacion (Spain), and the Science and Technology Facilities Council
(United Kingdom). Individuals have received support from the Marie-Curie
IEF program (European Union), the A. P. Sloan Foundation (USA) and the
Binational Science Foundation (USA-Israel).
NR 13
TC 0
Z9 0
U1 0
U2 9
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 19
PY 2010
VL 82
IS 9
AR 092006
DI 10.1103/PhysRevD.82.092006
PG 11
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 682KM
UT WOS:000284402400001
ER
PT J
AU Barai, P
Sampath, R
Nukala, PKVV
Simunovic, S
AF Barai, Pallab
Sampath, Rahul
Nukala, Phani Kumar V. V.
Simunovic, Srdan
TI Scaling of surface roughness in perfectly plastic disordered media
SO PHYSICAL REVIEW E
LA English
DT Article
ID 3-DIMENSIONAL FUSE NETWORKS; FRACTURE SURFACES; INTERFACES; MODELS
AB This paper investigates surface roughness characteristics of localized plastic yield surface in a perfectly plastic disordered material. We model the plastic disordered material using perfectly plastic random spring model. Our results indicate that plasticity in a disordered material evolves in a diffusive manner until macroscopic yielding, which is in contrast to the localized failure observed in brittle fracture of disordered materials. On the other hand, the height-height fluctuations of the plastic yield surfaces generated by the spring model exhibit roughness exponents similar to those obtained in the brittle fracture of disordered materials, albeit anomalous scaling of plastic surface roughness is not observed. The local and global roughness exponents (zeta(loc) and zeta, respectively) are equal to each other, and the two-dimensional crack roughness exponent is estimated to be zeta(loc) = zeta = 0.67 +/- 0.03. The probability density distribution p[Delta h(l)] of the height differences Delta h(l) = [h(x + l) - h(x)] of the crack profile follows a Gaussian distribution.
C1 [Barai, Pallab; Sampath, Rahul; Nukala, Phani Kumar V. V.; Simunovic, Srdan] Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA.
RP Barai, P (reprint author), Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA.
RI Sampath, Rahul/G-3396-2011
FU Mathematical, Information and Computational Sciences Division, Office of
Advanced Scientific Computing Research, U.S. Department of Energy
[DE-AC05-00OR22725]; UT-Battelle, LLC
FX This research was sponsored by the Mathematical, Information and
Computational Sciences Division, Office of Advanced Scientific Computing
Research, U.S. Department of Energy under Contract No. DE-AC05-00OR22725
with UT-Battelle, LLC.
NR 25
TC 3
Z9 3
U1 0
U2 11
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0045
EI 2470-0053
J9 PHYS REV E
JI Phys. Rev. E
PD NOV 19
PY 2010
VL 82
IS 5
AR 056116
DI 10.1103/PhysRevE.82.056116
PN 2
PG 9
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 682LV
UT WOS:000284406000001
PM 21230554
ER
PT J
AU Abazov, VM
Abbott, B
Abolins, M
Acharya, BS
Adams, M
Adams, T
Alexeev, GD
Alkhazov, G
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AF Abazov, V. M.
Abbott, B.
Abolins, M.
Acharya, B. S.
Adams, M.
Adams, T.
Alexeev, G. D.
Alkhazov, G.
Alton, A.
Alverson, G.
Alves, G. A.
Ancu, L. S.
Aoki, M.
Arnoud, Y.
Arov, M.
Askew, A.
Asman, B.
Atramentov, O.
Avila, C.
BackusMayes, J.
Badaud, F.
Bagby, L.
Baldin, B.
Bandurin, D. V.
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Yacoob, S.
Yamada, R.
Yang, W. -C.
Yasuda, T.
Yatsunenko, Y. A.
Ye, Z.
Yin, H.
Yip, K.
Yoo, H. D.
Youn, S. W.
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Zelitch, S.
Zhao, T.
Zhou, B.
Zhu, J.
Zielinski, M.
Zieminska, D.
Zivkovic, L.
CA D0 Collaboration
TI Search for Events with Leptonic Jets and Missing Transverse Energy in
p(p)over-bar Collisions at root s=1.96 TeV
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID DARK-MATTER
AB We present the first search for pair production of isolated jets of charged leptons in association with a large imbalance in transverse energy in p (p) over bar collisions using 5: 8 fb(-1) of integrated luminosity collected by the D0 detector at the Fermilab Tevatron Collider. No excess is observed above the standard model background, and the result is used to set upper limits on the production cross section of pairs of supersymmetric chargino and neutralino particles as a function of "dark-photon'' mass, where the dark photon is produced in the decay of the lightest supersymmetric particle.
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[Otero y Garzon, G. J.; Piegaia, R.; Tanasijczuk, A.] Univ Buenos Aires, Buenos Aires, DF, Argentina.
[Alves, G. A.; Barreto, J.; Maciel, A. K. A.; Pol, M. -E.] Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil.
[Begalli, M.] Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil.
[Gregores, E. M.; Mercadante, P. G.] Univ Fed ABC, Santo Andre, Brazil.
[Lietti, S. M.; Novaes, S. F.; Santos, A. S.] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil.
[Beale, S.; Liu, Z.; Taylor, W.] Simon Fraser Univ, Vancouver, BC, Canada.
[Beale, S.; Liu, Z.; Taylor, W.] York Univ, Toronto, ON M3J 2R7, Canada.
[Bu, X. B.; Han, L.; Liu, Y.; Yin, H.] Univ Sci & Technol China, Hefei 230026, Peoples R China.
[Avila, C.; Negret, J. P.] Univ Los Andes, Bogota, Colombia.
[Kvita, J.; Soustruznik, K.] Charles Univ Prague, Fac Math & Phys, Ctr Particle Phys, Prague, Czech Republic.
[Hubacek, Z.; Hynek, V.; Simak, V.; Vokac, P.] Czech Tech Univ, CR-16635 Prague, Czech Republic.
[Kupco, A.; Lokajicek, M.] Acad Sci Czech Republic, Inst Phys, Ctr Particle Phys, Prague, Czech Republic.
[Hoeneisen, B.] Univ San Francisco Quito, Quito, Ecuador.
[Badaud, F.; Gay, P.; Gris, Ph.] Univ Clermont Ferrand, LPC, CNRS IN2P3, Clermont, France.
[Arnoud, Y.; Sajot, G.; Stark, J.] Univ Grenoble 1, CNRS, IN2P3, Inst Natl Polytech Grenoble,LPSC, Grenoble, France.
[Calpas, B.; Cousinou, M. -C.; Duperrin, A.; Geng, W.; Jamin, D.; Kajfasz, E.; Kermiche, S.; Muanza, G. S.; Nagy, E.] Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France.
[Calvet, S.; Grivaz, J. -F.; Jaffre, M.; Petroff, P.; Rangel, M. S.] Univ Paris 11, CNRS, LAL, IN2P3, F-91405 Orsay, France.
[Bernardi, G.; Brown, D.; Brown, J.; Enari, Y.; Huske, N.; Lellouch, J.] Univ Paris 06, CNRS, LPNHE, IN2P3, Paris, France.
[Bernardi, G.; Brown, D.; Brown, J.; Enari, Y.; Huske, N.; Lellouch, J.] Univ Paris 07, CNRS, LPNHE, IN2P3, Paris, France.
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[Geist, W.; Greder, S.; Ripp-Baudot, I.] Univ Strasbourg, IPHC, CNRS IN2P3, Strasbourg, France.
[Grenier, G.; Kurca, T.; Lebrun, P.; Verdier, P.] Univ Lyon 1, CNRS, IPNL, IN2P3, F-69622 Villeurbanne, France.
[Grenier, G.; Kurca, T.; Lebrun, P.; Verdier, P.] Univ Lyon, Lyon, France.
[Hebbeker, T.; Meyer, A.; Sonnenschein, L.] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany.
[Bernhard, R.; Nilsen, H.] Univ Freiburg, Inst Phys, Freiburg, Germany.
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[Buescher, V.; Fiedler, F.; Hohlfeld, M.; Wicke, D.] Johannes Gutenberg Univ Mainz, Inst Phys, D-6500 Mainz, Germany.
[Nunnemann, T.; Sanders, M. P.] Univ Munich, Munich, Germany.
[Schliephake, T.] Berg Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany.
[Beri, S. B.; Bhatnagar, V.; Dutt, S.; Joshi, J.; Kohli, J. M.] Panjab Univ, Chandigarh 160014, India.
[Choudhary, B.; Dubey, A.; Naimuddin, M.; Nayyar, R.; Ranjan, K.; Shivpuri, R. K.] Univ Delhi, Delhi 110007, India.
[Acharya, B. S.; Banerjee, S.; Mondal, N. K.] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India.
[Cwiok, M.; Gruenewald, M. W.] Univ Coll Dublin, Dublin 2, Ireland.
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[Camacho-Perez, E.; Carrasco-Lizarraga, M. A.; Castilla-Valdez, H.; De La Cruz-Burelo, E.; Heredia-De La Cruz, I.; Luna-Garcia, R.; Magana-Villalba, R.; Martinez-Ortega, J.; Orduna, J.; Podesta-Lerma, P. L. M.; Sanchez-Hernandez, A.] CINVESTAV, Mexico City 14000, DF, Mexico.
[van Leeuwen, W. M.] FOM Inst NIKHEF, Amsterdam, Netherlands.
[van Leeuwen, W. M.] Univ Amsterdam NIKHEF, Amsterdam, Netherlands.
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[Asman, B.; Belanger-Champagne, C.] Uppsala Univ, Uppsala, Sweden.
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[Beuselinck, R.; Buszello, C. P.; Christoudias, T.; Davies, G.; Hays, J.; Jesik, R.; Jonsson, P.; Osman, N.; Scanlon, T.; Vint, P.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
[Harder, K.; Owen, M.; Peters, K.; Peters, Y.; Rich, P.; Schwanenberger, C.; Soeldner-Rembold, S.; Takahashi, M.; Vesterinen, M.; Wyatt, T. R.; Yang, W. -C.] Univ Manchester, Manchester M13 9PL, Lancs, England.
[Das, A.; Johns, K.; Varnes, W.] Univ Arizona, Tucson, AZ 85721 USA.
[Ellison, J.; Heinson, A. P.; Li, L.; Padilla, M.; Wimpenny, S. J.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Adams, T.; Askew, A.; Bandurin, D. V.; Blessing, S.; Carrera, E.; Hagopian, S.; Hoang, T.; Maravin, Y.; Wahl, H. D.] Florida State Univ, Tallahassee, FL 32306 USA.
[Aoki, M.; Bagby, L.; Baldin, B.; Bartlett, J. F.; Bellantoni, L.; Bhat, P. C.; Boehnlein, A.; Bross, A.; Casey, B. C. K.; Cihangir, S.; Cooke, M.; Cooper, W. E.; Demarteau, M.; Denisov, D.; Desai, S.; Diehl, H. T.; Diesburg, M.; Elvira, V. D.; Fisk, H. E.; Fuess, S.; Ginther, G.; Greenlee, H.; Gruenendahl, S.; Gutierrez, G.; Illingworth, R.; Ito, A. S.; Johnson, M.; Jonckheere, A.; Juste, A.; Kasper, P. A.; Khalatyan, N.; Lee, W. M.; Li, Q. Z.; Lincoln, D.; Lipton, R.; Lyon, A. L.; Penning, B.; Podstavkov, V. M.; Rominsky, M.; Rubinov, P.; Sanghi, B.; Savage, G.; Sirotenko, V.; Stutte, L.; Verzocchi, M.; Weber, M.; Xie, Y.; Yamada, R.; Yasuda, T.; Ye, Z.; Youn, S. W.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Adams, M.; Gerber, C. E.; Strom, D.; Varelas, N.] Univ Illinois, Chicago, IL 60607 USA.
[Blazey, G.; Chakraborty, D.; Dyshkant, A.; Fortner, M.; Hedin, D.; Menezes, D.; Uzunyan, S.] No Illinois Univ, De Kalb, IL 60115 USA.
[Buchholz, D.; Kirby, M. H.; Schellman, H.; Yacoob, S.] Northwestern Univ, Evanston, IL 60208 USA.
[Evans, H.; Lammers, S.; Parua, N.; Price, D.; Van Kooten, R.; Zieminska, D.] Indiana Univ, Bloomington, IN 47405 USA.
[Parashar, N.] Purdue Univ Calumet, Hammond, IN 46323 USA.
[Chan, K. M.; Hildreth, M. D.; Osta, J.; Ruchti, R.; Smirnov, D.; Warchol, J.; Wayne, M.] Univ Notre Dame, Notre Dame, IN 46556 USA.
[Hauptman, J. M.; Lee, S. W.] Iowa State Univ, Ames, IA 50011 USA.
[Baringer, P.; Bean, A.; Chen, G.; Clutter, J.; McGivern, C. L.; Sekaric, J.; Wilson, G. W.] Univ Kansas, Lawrence, KS 66045 USA.
[Bolton, T. A.; Kaadze, K.; Onoprienko, D.] Kansas State Univ, Manhattan, KS 66506 USA.
[Arov, M.; Greenwood, Z. D.; Sawyer, L.; Wobisch, M.] Louisiana Tech Univ, Ruston, LA 71272 USA.
[Eno, S.; Ferbel, T.; Wetstein, M.] Univ Maryland, College Pk, MD 20742 USA.
[Bose, T.] Boston Univ, Boston, MA 02215 USA.
[Alverson, G.; Barberis, E.; Facini, G.; Haley, J.; Hesketh, G.; Wood, D. R.] Northeastern Univ, Boston, MA 02115 USA.
[Alton, A.; Herner, K.; Neal, H. A.; Qian, J.; Xu, C.; Zhou, B.; Zhu, J.] Univ Michigan, Ann Arbor, MI 48109 USA.
[Abolins, M.; Benitez, J. A.; Brock, R.; Edmunds, D.; Fisher, W.; Geng, W.; Kraus, J.; Linnemann, J.; Piper, J.; Schwienhorst, R.] Michigan State Univ, E Lansing, MI 48824 USA.
[Melnitchouk, A.; Quinn, B.] Univ Mississippi, University, MS 38677 USA.
[Bloom, K.; Claes, D.; DeVaughan, K.; Dominguez, A.; Eads, M.; Johnston, D.; Katsanos, I.; Malik, S.; Snow, G. R.] Univ Nebraska, Lincoln, NE 68588 USA.
[Atramentov, O.; DeMair, D.; Duggan, D.; Gershtein, Y.] Rutgers State Univ, Piscataway, NJ 08855 USA.
[Gerbaudo, D.; Tully, C.] Princeton Univ, Princeton, NJ 08544 USA.
[Iashvili, I.; Jain, S.; Kharchilava, A.; Kumar, A.; Smith, K. J.] SUNY Buffalo, Buffalo, NY 14260 USA.
[Brooijmans, G.; Haas, A.; Parsons, J.; Tuts, P. M.; Zivkovic, L.] Columbia Univ, New York, NY 10027 USA.
[Demina, R.; Ferbel, T.; Garcia-Bellido, A.; Ginther, G.; Harel, A.; Petrillo, G.; Slattery, P.; Wang, M. H. L. S.; Zielinski, M.] Univ Rochester, Rochester, NY 14627 USA.
[Boline, D.; Chakrabarti, S.; Grannis, P. D.; Guo, F.; Guo, J.; Hobbs, J. D.; McCarthy, R.; Rijssenbeek, M.; Schamberger, R. D.; Strauss, E.; Tsybychev, D.] SUNY Stony Brook, Stony Brook, NY 11794 USA.
[Begel, M.; Evdokimov, A.; Gadfort, T.; Patwa, A.; Pleier, M. -A.; Protopopescu, S.; Snyder, S.; Yip, K.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Snow, J.] Langston Univ, Langston, OK 73050 USA.
[Abbott, B.; Gutierrez, P.; Hossain, S.; Severini, H.; Skubic, P.; Strauss, M.] Univ Oklahoma, Norman, OK 73019 USA.
[Hegab, H.; Khanov, A.; Rizatdinova, F.] Oklahoma State Univ, Stillwater, OK 74078 USA.
[Cho, D. K.; Cutts, D.; Ferapontov, A. V.; Heintz, U.; Jabeen, S.; Khatidze, D.; Landsberg, G.; Narain, M.; Pangilinan, M.; Parihar, V.; Partridge, R.; Yoo, H. D.] Brown Univ, Providence, RI 02912 USA.
[Brandt, A.; De, K.; Sosebee, M.; Spurlock, B.; White, A.; Yu, J.] Univ Texas Arlington, Arlington, TX 76019 USA.
[Kehoe, R.; Renkel, P.] So Methodist Univ, Dallas, TX 75275 USA.
[Chandra, A.; Corcoran, M.; Mackin, D.; Prewitt, M.] Rice Univ, Houston, TX 77005 USA.
[Buehler, M.; Hirosky, R.; Mulhearn, M.; Zelitch, S.] Univ Virginia, Charlottesville, VA 22901 USA.
[BackusMayes, J.; Burnett, T. H.; Dorland, T.; Goussiou, A.; Lubatti, H. J.; Schlobohm, S.; Watts, G.; Zhao, T.] Univ Washington, Seattle, WA 98195 USA.
RP Abazov, VM (reprint author), Joint Inst Nucl Res, Dubna, Russia.
RI Li, Liang/O-1107-2015; De, Kaushik/N-1953-2013; Ancu, Lucian
Stefan/F-1812-2010; Alves, Gilvan/C-4007-2013; Deliot,
Frederic/F-3321-2014; Sharyy, Viatcheslav/F-9057-2014; Lokajicek,
Milos/G-7800-2014; Kupco, Alexander/G-9713-2014; Kozelov,
Alexander/J-3812-2014; Christoudias, Theodoros/E-7305-2015; Guo,
Jun/O-5202-2015; Gerbaudo, Davide/J-4536-2012; Bolton, Tim/A-7951-2012;
bu, xuebing/D-1121-2012; Novaes, Sergio/D-3532-2012; Yip,
Kin/D-6860-2013; Wimpenny, Stephen/K-8848-2013; Santos,
Angelo/K-5552-2012; Gutierrez, Phillip/C-1161-2011; Dudko,
Lev/D-7127-2012; Perfilov, Maxim/E-1064-2012; Merkin,
Mikhail/D-6809-2012; Boos, Eduard/D-9748-2012; Mercadante,
Pedro/K-1918-2012; Fisher, Wade/N-4491-2013
OI Li, Liang/0000-0001-6411-6107; De, Kaushik/0000-0002-5647-4489; Ancu,
Lucian Stefan/0000-0001-5068-6723; Sharyy,
Viatcheslav/0000-0002-7161-2616; Christoudias,
Theodoros/0000-0001-9050-3880; Guo, Jun/0000-0001-8125-9433; Gerbaudo,
Davide/0000-0002-4463-0878; Novaes, Sergio/0000-0003-0471-8549; Yip,
Kin/0000-0002-8576-4311; Wimpenny, Stephen/0000-0003-0505-4908; Dudko,
Lev/0000-0002-4462-3192;
FU DOE; NSF (USA); CEA; CNRS/IN2P3 (France); FASI; Rosatom; RFBR (Russia);
CNPq; FAPERJ; FAPESP; FUNDUNESP (Brazil); DST (India); Colciencias
(Colombia); CONACyT (Mexico); KRF; KOSEF (Korea); CONICET; UBACyT
(Argentina); FOM (The Netherlands); STFC; Royal Society (United
Kingdom); MSMT; GACR (Czech Republic); CRC; NSERC (Canada); BMBF; DFG
(Germany); SFI (Ireland); Swedish Research Council (Sweden); CAS; CNSF
(China); DAE
FX We thank A. Falkowski, J. Ruderman, M. Strassler, S. Thomas, I. Yavin,
and J. Wacker for many useful discussions and guidance. We thank the
staffs at Fermilab and collaborating institutions, and acknowledge
support from the DOE and NSF (USA); CEA and CNRS/IN2P3 (France); FASI,
Rosatom, and RFBR (Russia); CNPq, FAPERJ, FAPESP, and FUNDUNESP
(Brazil); DAE and DST (India); Colciencias (Colombia); CONACyT (Mexico);
KRF and KOSEF (Korea); CONICET and UBACyT (Argentina); FOM (The
Netherlands); STFC and the Royal Society (United Kingdom); MSMT and GACR
(Czech Republic); CRC Program and NSERC (Canada); BMBF and DFG
(Germany); SFI (Ireland); The Swedish Research Council (Sweden); and CAS
and CNSF (China).
NR 28
TC 20
Z9 20
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 19
PY 2010
VL 105
IS 21
AR 211802
DI 10.1103/PhysRevLett.105.211802
PG 7
WC Physics, Multidisciplinary
SC Physics
GA 682MJ
UT WOS:000284407400006
ER
PT J
AU Abazov, VM
Abbott, B
Abolins, M
Acharya, BS
Adams, M
Adams, T
Alexeev, GD
Alkhazov, G
Alton, A
Alverson, G
Alves, GA
Ancu, LS
Aoki, M
Arnoud, Y
Arov, M
Askew, A
Asman, B
Atramentov, O
Avila, C
BackusMayes, J
Badaud, F
Bagby, L
Baldin, B
Bandurin, DV
Banerjee, S
Barberis, E
Baringer, P
Barreto, J
Bartlett, JF
Bassler, U
Beale, S
Bean, A
Begalli, M
Begel, M
Belanger-Champagne, C
Bellantoni, L
Benitez, JA
Beri, SB
Bernardi, G
Bernhard, R
Bertram, I
Besancon, M
Beuselinck, R
Bezzubov, VA
Bhat, PC
Bhatnagar, V
Blazey, G
Blessing, S
Bloom, K
Boehnlein, A
Boline, D
Bolton, TA
Boos, EE
Borissov, G
Bose, T
Brandt, A
Brandt, O
Brock, R
Brooijmans, G
Bross, A
Brown, D
Brown, J
Bu, XB
Buchholz, D
Buehler, M
Buescher, V
Bunichev, V
Burdin, S
Burnett, TH
Buszello, CP
Calpas, B
Calvet, S
Camacho-Perez, E
Carrasco-Lizarraga, MA
Carrera, E
Casey, BCK
Castilla-Valdez, H
Chakrabarti, S
Chakraborty, D
Chan, KM
Chandra, A
Chen, G
Chevalier-Thery, S
Cho, DK
Cho, SW
Choi, S
Choudhary, B
Christoudias, T
Cihangir, S
Claes, D
Clutter, J
Cooke, M
Cooper, WE
Corcoran, M
Couderc, F
Cousinou, MC
Croc, A
Cutts, D
Cwiok, M
Das, A
Davies, G
De, K
de Jong, SJ
De La Cruz-Burelo, E
Deliot, F
Demarteau, M
Demina, R
Denisov, D
Denisov, SP
Desai, S
DeVaughan, K
Diehl, HT
Diesburg, M
Dominguez, A
Dorland, T
Dubey, A
Dudko, LV
Duggan, D
Duperrin, A
Dutt, S
Dyshkant, A
Eads, M
Edmunds, D
Ellison, J
Elvira, VD
Enari, Y
Eno, S
Evans, H
Evans, JA
Evdokimov, A
Evdokimov, VN
Facini, G
Ferapontov, AV
Ferbel, T
Fiedler, F
Filthaut, F
Fisher, W
Fisk, HE
Fortner, M
Fox, H
Fuess, S
Gadfort, T
Garcia-Bellido, A
Gavrilov, V
Gay, P
Geist, W
Geng, W
Gerbaudo, D
Gerber, CE
Gershtein, Y
Ginther, G
Golovanov, G
Goussiou, A
Grannis, PD
Greder, S
Greenlee, H
Greenwood, ZD
Gregores, EM
Grenier, G
Gris, P
Grivaz, JF
Grohsjean, A
Grunendahl, S
Grunewald, MW
Guo, F
Guo, J
Gutierrez, G
Gutierrez, P
Haas, A
Hagopian, S
Haley, J
Han, L
Harder, K
Harel, A
Hauptman, JM
Hays, J
Hebbeker, T
Hedin, D
Hegab, H
Heinson, AP
Heintz, U
Hensel, C
Heredia-De La Cruz, I
Herner, K
Hesketh, G
Hildreth, MD
Hirosky, R
Hoang, T
Hobbs, JD
Hoeneisen, B
Hohlfeld, M
Hossain, S
Hubacek, Z
Huske, N
Hynek, V
Iashvili, I
Illingworth, R
Ito, AS
Jabeen, S
Jaffre, M
Jain, S
Jamin, D
Jesik, R
Johns, K
Johnson, M
Johnston, D
Jonckheere, A
Jonsson, P
Joshi, J
Juste, A
Kaadze, K
Kajfasz, E
Karmanov, D
Kasper, PA
Katsanos, I
Kehoe, R
Kermiche, S
Khalatyan, N
Khanov, A
Kharchilava, A
Kharzheev, YN
Khatidze, D
Kirby, MH
Kohli, JM
Kozelov, AV
Kraus, J
Kumar, A
Kupco, A
Kurca, T
Kuzmin, VA
Kvita, J
Lammers, S
Landsberg, G
Lebrun, P
Lee, HS
Lee, SW
Lee, WM
Lellouch, J
Li, L
Li, QZ
Lietti, SM
Lim, JK
Lincoln, D
Linnemann, J
Lipaev, VV
Lipton, R
Liu, Y
Liu, Z
Lobodenko, A
Lokajicek, M
Love, P
Lubatti, HJ
Luna-Garcia, R
Luty, MA
Lyon, AL
Maciel, AKA
Mackin, D
Madar, R
Magana-Villalba, R
Malik, S
Malyshev, VL
Maravin, Y
Martinez-Ortega, J
McCarthy, R
McGivern, CL
Meijer, MM
Melnitchouk, A
Menezes, D
Mercadante, PG
Merkin, M
Meyer, A
Meyer, J
Mondal, NK
Muanza, GS
Mulhearn, M
Nagy, E
Naimuddin, M
Narain, M
Nayyar, R
Neal, HA
Negret, JP
Neustroev, P
Nilsen, H
Novaes, SF
Nunnemann, T
Obrant, G
Onoprienko, D
Orduna, J
Osman, N
Osta, J
Garzon, GJOY
Owen, M
Padilla, M
Pangilinan, M
Parashar, N
Parihar, V
Park, SK
Parsons, J
Partridge, R
Parua, N
Patwa, A
Penning, B
Perfilov, M
Peters, K
Peters, Y
Petrillo, G
Petroff, P
Piegaia, R
Piper, J
Pleier, MA
Podesta-Lerma, PLM
Podstavkov, VM
Pol, ME
Polozov, P
Popov, AV
Prewitt, M
Price, D
Protopopescu, S
Qian, J
Quadt, A
Quinn, B
Rangel, MS
Ranjan, K
Ratoff, PN
Razumov, I
Renkel, P
Rich, P
Rijssenbeek, M
Ripp-Baudot, I
Rizatdinova, F
Rominsky, M
Royon, C
Rubinov, P
Ruchti, R
Safronov, G
Sajot, G
Sanchez-Hernandez, A
Sanders, MP
Sanghi, B
Santos, AS
Savage, G
Sawyer, L
Scanlon, T
Schamberger, RD
Scheglov, Y
Schellman, H
Schliephake, T
Schlobohm, S
Schwanenberger, C
Schwienhorst, R
Sekaric, J
Severini, H
Shabalina, E
Shary, V
Shchukin, AA
Shivpuri, RK
Simak, V
Sirotenko, V
Skubic, P
Slattery, P
Smirnov, D
Smith, KJ
Snow, GR
Snow, J
Snyder, S
Soldner-Rembold, S
Sonnenschein, L
Sopczak, A
Sosebee, M
Soustruznik, K
Spurlock, B
Stark, J
Stolin, V
Stoyanova, DA
Strauss, E
Strauss, M
Strom, D
Stutte, L
Svoisky, P
Takahashi, M
Tanasijczuk, A
Taylor, W
Titov, M
Tokmenin, VV
Tsybychev, D
Tuchming, B
Tully, C
Tuts, PM
Uvarov, L
Uvarov, S
Uzunyan, S
Van Kooten, R
van Leeuwen, WM
Varelas, N
Varnes, EW
Vasilyev, IA
Verdier, P
Vertogradov, LS
Verzocchi, M
Vesterinen, M
Vilanova, D
Vint, P
Vokac, P
Wahl, HD
Wang, MHLS
Warchol, J
Watts, G
Wayne, M
Weber, M
Wetstein, M
White, A
Wicke, D
Williams, MRJ
Wilson, GW
Wimpenny, SJ
Wobisch, M
Wood, DR
Wyatt, TR
Xie, Y
Xu, C
Yacoob, S
Yamada, R
Yang, WC
Yasuda, T
Yatsunenko, YA
Ye, Z
Yin, H
Yip, K
Yoo, HD
Youn, SW
Yu, J
Zelitch, S
Zhao, T
Zhou, B
Zhu, J
Zielinski, M
Zieminska, D
Zivkovic, L
AF Abazov, V. M.
Abbott, B.
Abolins, M.
Acharya, B. S.
Adams, M.
Adams, T.
Alexeev, G. D.
Alkhazov, G.
Alton, A.
Alverson, G.
Alves, G. A.
Ancu, L. S.
Aoki, M.
Arnoud, Y.
Arov, M.
Askew, A.
Asman, B.
Atramentov, O.
Avila, C.
BackusMayes, J.
Badaud, F.
Bagby, L.
Baldin, B.
Bandurin, D. V.
Banerjee, S.
Barberis, E.
Baringer, P.
Barreto, J.
Bartlett, J. F.
Bassler, U.
Beale, S.
Bean, A.
Begalli, M.
Begel, M.
Belanger-Champagne, C.
Bellantoni, L.
Benitez, J. A.
Beri, S. B.
Bernardi, G.
Bernhard, R.
Bertram, I.
Besancon, M.
Beuselinck, R.
Bezzubov, V. A.
Bhat, P. C.
Bhatnagar, V.
Blazey, G.
Blessing, S.
Bloom, K.
Boehnlein, A.
Boline, D.
Bolton, T. A.
Boos, E. E.
Borissov, G.
Bose, T.
Brandt, A.
Brandt, O.
Brock, R.
Brooijmans, G.
Bross, A.
Brown, D.
Brown, J.
Bu, X. B.
Buchholz, D.
Buehler, M.
Buescher, V.
Bunichev, V.
Burdin, S.
Burnett, T. H.
Buszello, C. P.
Calpas, B.
Calvet, S.
Camacho-Perez, E.
Carrasco-Lizarraga, M. A.
Carrera, E.
Casey, B. C. K.
Castilla-Valdez, H.
Chakrabarti, S.
Chakraborty, D.
Chan, K. M.
Chandra, A.
Chen, G.
Chevalier-Thery, S.
Cho, D. K.
Cho, S. W.
Choi, S.
Choudhary, B.
Christoudias, T.
Cihangir, S.
Claes, D.
Clutter, J.
Cooke, M.
Cooper, W. E.
Corcoran, M.
Couderc, F.
Cousinou, M. -C.
Croc, A.
Cutts, D.
Cwiok, M.
Das, A.
Davies, G.
De, K.
de Jong, S. J.
De La Cruz-Burelo, E.
Deliot, F.
Demarteau, M.
Demina, R.
Denisov, D.
Denisov, S. P.
Desai, S.
DeVaughan, K.
Diehl, H. T.
Diesburg, M.
Dominguez, A.
Dorland, T.
Dubey, A.
Dudko, L. V.
Duggan, D.
Duperrin, A.
Dutt, S.
Dyshkant, A.
Eads, M.
Edmunds, D.
Ellison, J.
Elvira, V. D.
Enari, Y.
Eno, S.
Evans, H.
Evans, J. A.
Evdokimov, A.
Evdokimov, V. N.
Facini, G.
Ferapontov, A. V.
Ferbel, T.
Fiedler, F.
Filthaut, F.
Fisher, W.
Fisk, H. E.
Fortner, M.
Fox, H.
Fuess, S.
Gadfort, T.
Garcia-Bellido, A.
Gavrilov, V.
Gay, P.
Geist, W.
Geng, W.
Gerbaudo, D.
Gerber, C. E.
Gershtein, Y.
Ginther, G.
Golovanov, G.
Goussiou, A.
Grannis, P. D.
Greder, S.
Greenlee, H.
Greenwood, Z. D.
Gregores, E. M.
Grenier, G.
Gris, Ph
Grivaz, J. -F.
Grohsjean, A.
Gruenendahl, S.
Gruenewald, M. W.
Guo, F.
Guo, J.
Gutierrez, G.
Gutierrez, P.
Haas, A.
Hagopian, S.
Haley, J.
Han, L.
Harder, K.
Harel, A.
Hauptman, J. M.
Hays, J.
Hebbeker, T.
Hedin, D.
Hegab, H.
Heinson, A. P.
Heintz, U.
Hensel, C.
Heredia-De La Cruz, I.
Herner, K.
Hesketh, G.
Hildreth, M. D.
Hirosky, R.
Hoang, T.
Hobbs, J. D.
Hoeneisen, B.
Hohlfeld, M.
Hossain, S.
Hubacek, Z.
Huske, N.
Hynek, V.
Iashvili, I.
Illingworth, R.
Ito, A. S.
Jabeen, S.
Jaffre, M.
Jain, S.
Jamin, D.
Jesik, R.
Johns, K.
Johnson, M.
Johnston, D.
Jonckheere, A.
Jonsson, P.
Joshi, J.
Juste, A.
Kaadze, K.
Kajfasz, E.
Karmanov, D.
Kasper, P. A.
Katsanos, I.
Kehoe, R.
Kermiche, S.
Khalatyan, N.
Khanov, A.
Kharchilava, A.
Kharzheev, Y. N.
Khatidze, D.
Kirby, M. H.
Kohli, J. M.
Kozelov, A. V.
Kraus, J.
Kumar, A.
Kupco, A.
Kurca, T.
Kuzmin, V. A.
Kvita, J.
Lammers, S.
Landsberg, G.
Lebrun, P.
Lee, H. S.
Lee, S. W.
Lee, W. M.
Lellouch, J.
Li, L.
Li, Q. Z.
Lietti, S. M.
Lim, J. K.
Lincoln, D.
Linnemann, J.
Lipaev, V. V.
Lipton, R.
Liu, Y.
Liu, Z.
Lobodenko, A.
Lokajicek, M.
Love, P.
Lubatti, H. J.
Luna-Garcia, R.
Luty, M. A.
Lyon, A. L.
Maciel, A. K. A.
Mackin, D.
Madar, R.
Magana-Villalba, R.
Malik, S.
Malyshev, V. L.
Maravin, Y.
Martinez-Ortega, J.
McCarthy, R.
McGivern, C. L.
Meijer, M. M.
Melnitchouk, A.
Menezes, D.
Mercadante, P. G.
Merkin, M.
Meyer, A.
Meyer, J.
Mondal, N. K.
Muanza, G. S.
Mulhearn, M.
Nagy, E.
Naimuddin, M.
Narain, M.
Nayyar, R.
Neal, H. A.
Negret, J. P.
Neustroev, P.
Nilsen, H.
Novaes, S. F.
Nunnemann, T.
Obrant, G.
Onoprienko, D.
Orduna, J.
Osman, N.
Osta, J.
Otero y Garzon, G. J.
Owen, M.
Padilla, M.
Pangilinan, M.
Parashar, N.
Parihar, V.
Park, S. K.
Parsons, J.
Partridge, R.
Parua, N.
Patwa, A.
Penning, B.
Perfilov, M.
Peters, K.
Peters, Y.
Petrillo, G.
Petroff, P.
Piegaia, R.
Piper, J.
Pleier, M. -A.
Podesta-Lerma, P. L. M.
Podstavkov, V. M.
Pol, M. -E.
Polozov, P.
Popov, A. V.
Prewitt, M.
Price, D.
Protopopescu, S.
Qian, J.
Quadt, A.
Quinn, B.
Rangel, M. S.
Ranjan, K.
Ratoff, P. N.
Razumov, I.
Renkel, P.
Rich, P.
Rijssenbeek, M.
Ripp-Baudot, I.
Rizatdinova, F.
Rominsky, M.
Royon, C.
Rubinov, P.
Ruchti, R.
Safronov, G.
Sajot, G.
Sanchez-Hernandez, A.
Sanders, M. P.
Sanghi, B.
Santos, A. S.
Savage, G.
Sawyer, L.
Scanlon, T.
Schamberger, R. D.
Scheglov, Y.
Schellman, H.
Schliephake, T.
Schlobohm, S.
Schwanenberger, C.
Schwienhorst, R.
Sekaric, J.
Severini, H.
Shabalina, E.
Shary, V.
Shchukin, A. A.
Shivpuri, R. K.
Simak, V.
Sirotenko, V.
Skubic, P.
Slattery, P.
Smirnov, D.
Smith, K. J.
Snow, G. R.
Snow, J.
Snyder, S.
Soeldner-Rembold, S.
Sonnenschein, L.
Sopczak, A.
Sosebee, M.
Soustruznik, K.
Spurlock, B.
Stark, J.
Stolin, V.
Stoyanova, D. A.
Strauss, E.
Strauss, M.
Strom, D.
Stutte, L.
Svoisky, P.
Takahashi, M.
Tanasijczuk, A.
Taylor, W.
Titov, M.
Tokmenin, V. V.
Tsybychev, D.
Tuchming, B.
Tully, C.
Tuts, P. M.
Uvarov, L.
Uvarov, S.
Uzunyan, S.
Van Kooten, R.
van Leeuwen, W. M.
Varelas, N.
Varnes, E. W.
Vasilyev, I. A.
Verdier, P.
Vertogradov, L. S.
Verzocchi, M.
Vesterinen, M.
Vilanova, D.
Vint, P.
Vokac, P.
Wahl, H. D.
Wang, M. H. L. S.
Warchol, J.
Watts, G.
Wayne, M.
Weber, M.
Wetstein, M.
White, A.
Wicke, D.
Williams, M. R. J.
Wilson, G. W.
Wimpenny, S. J.
Wobisch, M.
Wood, D. R.
Wyatt, T. R.
Xie, Y.
Xu, C.
Yacoob, S.
Yamada, R.
Yang, W. -C.
Yasuda, T.
Yatsunenko, Y. A.
Ye, Z.
Yin, H.
Yip, K.
Yoo, H. D.
Youn, S. W.
Yu, J.
Zelitch, S.
Zhao, T.
Zhou, B.
Zhu, J.
Zielinski, M.
Zieminska, D.
Zivkovic, L.
CA D0 Collaboration
TI Search for New Fermions ("Quirks'') at the Fermilab Tevatron Collider
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
AB We report results of a search for particles with anomalously high ionization in events with a high transverse energy jet and large missing transverse energy in 2: 4 fb(-1) of integrated luminosity collected by the D0 experiment at the Fermilab Tevatron p (p) over bar collider. Production of such particles (quirks) is expected in scenarios with extra QCD-like SU(N) sectors, and this study is the first dedicated search for such signatures. We find no evidence of a signal and set a lower mass limit of 107, 119, and 133 GeV for the mass of a charged quirk with strong dynamics scale Lambda in the range from 10 keV to 1 MeV and N = 2, 3, and 5, respectively.
C1 [Abazov, V. M.; Alexeev, G. D.; Golovanov, G.; Kharzheev, Y. N.; Malyshev, V. L.; Tokmenin, V. V.; Vertogradov, L. S.; Yatsunenko, Y. A.] Joint Inst Nucl Res, Dubna, Russia.
[Otero y Garzon, G. J.; Piegaia, R.; Tanasijczuk, A.] Univ Buenos Aires, Buenos Aires, DF, Argentina.
[Alves, G. A.; Barreto, J.; Maciel, A. K. A.; Pol, M. -E.] Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil.
[Begalli, M.] Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil.
[Gregores, E. M.; Mercadante, P. G.] Univ Fed ABC, Santo Andre, Brazil.
[Lietti, S. M.; Novaes, S. F.; Santos, A. S.] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil.
[Beale, S.; Liu, Z.; Taylor, W.] Simon Fraser Univ, Vancouver, BC, Canada.
[Beale, S.; Liu, Z.; Taylor, W.] York Univ, Toronto, ON M3J 2R7, Canada.
[Bu, X. B.; Han, L.; Liu, Y.; Yin, H.] Univ Sci & Technol China, Hefei 230026, Peoples R China.
[Avila, C.; Negret, J. P.] Univ Los Andes, Bogota, Colombia.
[Kvita, J.; Soustruznik, K.] Charles Univ Prague, Fac Math & Phys, Ctr Particle Phys, Prague, Czech Republic.
[Hubacek, Z.; Hynek, V.; Simak, V.; Vokac, P.] Czech Tech Univ, CR-16635 Prague, Czech Republic.
[Kupco, A.; Lokajicek, M.] Acad Sci Czech Republic, Inst Phys, Ctr Particle Phys, Prague, Czech Republic.
[Hoeneisen, B.] Univ San Francisco Quito, Quito, Ecuador.
[Badaud, F.; Gay, P.; Gris, Ph] Univ Clermont Ferrand, CNRS IN2P3, LPC, Clermont, France.
[Arnoud, Y.; Sajot, G.; Stark, J.] Univ Grenoble 1, CNRS, IN2P3, LPSC,Inst Natl Polytech Grenoble, Grenoble, France.
[Calpas, B.; Cousinou, M. -C.; Duperrin, A.; Geng, W.; Jamin, D.; Kajfasz, E.; Kermiche, S.; Muanza, G. S.; Nagy, E.] Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France.
[Calvet, S.; Grivaz, J. -F.; Jaffre, M.; Petroff, P.; Rangel, M. S.] Univ Paris 11, CNRS IN2P3, LAL, Orsay, France.
[Bernardi, G.; Brown, D.; Brown, J.; Enari, Y.; Huske, N.; Lellouch, J.] Univ Paris 06, CNRS, LPNHE, IN2P3, Paris, France.
[Bernardi, G.; Brown, D.; Brown, J.; Enari, Y.; Huske, N.; Lellouch, J.] Univ Paris 07, CNRS, LPNHE, IN2P3, Paris, France.
[Bassler, U.; Besancon, M.; Chevalier-Thery, S.; Couderc, F.; Croc, A.; Deliot, F.; Grohsjean, A.; Madar, R.; Royon, C.; Shary, V.; Titov, M.; Tuchming, B.; Vilanova, D.] CEA, SPP, Saclay, France.
[Geist, W.; Greder, S.; Ripp-Baudot, I.] Univ Strasbourg, IPHC, CNRS IN2P3, Strasbourg, France.
[Grenier, G.; Kurca, T.; Lebrun, P.; Verdier, P.] Univ Lyon 1, CNRS, IPNL, IN2P3, F-69622 Villeurbanne, France.
[Grenier, G.; Kurca, T.; Lebrun, P.; Verdier, P.] Univ Lyon, Lyon, France.
[Hebbeker, T.; Meyer, A.; Sonnenschein, L.] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany.
[Bernhard, R.; Nilsen, H.] Univ Freiburg, Inst Phys, Freiburg, Germany.
[Brandt, O.; Hensel, C.; Meyer, J.; Quadt, A.; Shabalina, E.] Univ Gottingen, Inst Phys 2, Gottingen, Germany.
[Buescher, V.; Fiedler, F.; Hohlfeld, M.; Wicke, D.] Johannes Gutenberg Univ Mainz, Inst Phys, D-6500 Mainz, Germany.
[Nunnemann, T.; Sanders, M. P.] Univ Munich, Munich, Germany.
[Schliephake, T.] Berg Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany.
[Beri, S. B.; Bhatnagar, V.; Dutt, S.; Joshi, J.; Kohli, J. M.; Kumar, A.] Panjab Univ, Chandigarh 160014, India.
[Choudhary, B.; Dubey, A.; Naimuddin, M.; Nayyar, R.; Ranjan, K.; Shivpuri, R. K.] Univ Delhi, Delhi 110007, India.
[Acharya, B. S.; Banerjee, S.; Mondal, N. K.] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India.
[Cwiok, M.; Gruenewald, M. W.] Univ Coll Dublin, Dublin 2, Ireland.
[Cho, S. W.; Choi, S.; Lee, H. S.; Lim, J. K.; Park, S. K.] Korea Univ, Korea Detector Lab, Seoul, South Korea.
[Camacho-Perez, E.; Carrasco-Lizarraga, M. A.; Castilla-Valdez, H.; De La Cruz-Burelo, E.; Heredia-De La Cruz, I.; Luna-Garcia, R.; Magana-Villalba, R.; Martinez-Ortega, J.; Orduna, J.; Podesta-Lerma, P. L. M.; Sanchez-Hernandez, A.] CINVESTAV, Mexico City 14000, DF, Mexico.
[van Leeuwen, W. M.] FOM Inst NIKHEF, Amsterdam, Netherlands.
[van Leeuwen, W. M.] Univ Amsterdam NIKHEF, Amsterdam, Netherlands.
[Ancu, L. S.; de Jong, S. J.; Filthaut, F.; Meijer, M. M.; Svoisky, P.] Radboud Univ Nijmegen NIKHEF, Nijmegen, Netherlands.
[Gavrilov, V.; Polozov, P.; Safronov, G.; Stolin, V.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Boos, E. E.; Bunichev, V.; Dudko, L. V.; Karmanov, D.; Kuzmin, V. A.; Merkin, M.; Perfilov, M.] Moscow MV Lomonosov State Univ, Moscow, Russia.
[Bezzubov, V. A.; Denisov, S. P.; Evdokimov, V. N.; Kozelov, A. V.; Lipaev, V. V.; Popov, A. V.; Razumov, I.; Shchukin, A. A.; Stoyanova, D. A.; Vasilyev, I. A.] Inst High Energy Phys, Protvino, Russia.
[Alkhazov, G.; Lobodenko, A.; Neustroev, P.; Obrant, G.; Scheglov, Y.; Uvarov, L.; Uvarov, S.] Petersburg Nucl Phys Inst, St Petersburg, Russia.
[Asman, B.; Belanger-Champagne, C.] Stockholm Univ, S-10691 Stockholm, Sweden.
[Asman, B.; Belanger-Champagne, C.] Uppsala Univ, Uppsala, Sweden.
[Bertram, I.; Borissov, G.; Burdin, S.; Fox, H.; Love, P.; Ratoff, P. N.; Sopczak, A.; Williams, M. R. J.] Univ Lancaster, Lancaster LA1 4YB, England.
[Beuselinck, R.; Buszello, C. P.; Christoudias, T.; Davies, G.; Hays, J.; Jesik, R.; Jonsson, P.; Osman, N.; Scanlon, T.; Vint, P.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
[Harder, K.; Owen, M.; Peters, K.; Peters, Y.; Rich, P.; Schwanenberger, C.; Soeldner-Rembold, S.; Takahashi, M.; Vesterinen, M.; Wyatt, T. R.; Yang, W. -C.] Univ Manchester, Manchester M13 9PL, Lancs, England.
[Das, A.; Johns, K.; Varnes, E. W.] Univ Arizona, Tucson, AZ 85721 USA.
[Ellison, J.; Heinson, A. P.; Li, L.; Padilla, M.; Wimpenny, S. J.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Adams, T.; Askew, A.; Bandurin, D. V.; Blessing, S.; Carrera, E.; Hagopian, S.; Hoang, T.; Wahl, H. D.] Florida State Univ, Tallahassee, FL 32306 USA.
[Aoki, M.; Bagby, L.; Baldin, B.; Bartlett, J. F.; Bellantoni, L.; Bhat, P. C.; Boehnlein, A.; Bross, A.; Casey, B. C. K.; Cihangir, S.; Cooke, M.; Cooper, W. E.; Demarteau, M.; Denisov, D.; Desai, S.; Diehl, H. T.; Diesburg, M.; Elvira, V. D.; Fisk, H. E.; Fuess, S.; Ginther, G.; Greenlee, H.; Gruenendahl, S.; Gutierrez, G.; Illingworth, R.; Ito, A. S.; Johnson, M.; Jonckheere, A.; Juste, A.; Kasper, P. A.; Khalatyan, N.; Lee, W. M.; Li, Q. Z.; Lincoln, D.; Lipton, R.; Lyon, A. L.; Penning, B.; Podstavkov, V. M.; Rominsky, M.; Rubinov, P.; Sanghi, B.; Savage, G.; Sirotenko, V.; Stutte, L.; Verzocchi, M.; Weber, M.; Xie, Y.; Yamada, R.; Yasuda, T.; Ye, Z.; Youn, S. W.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Adams, M.; Gerber, C. E.; Strom, D.; Varelas, N.] Univ Illinois, Chicago, IL 60607 USA.
[Blazey, G.; Chakraborty, D.; Dyshkant, A.; Fortner, M.; Hedin, D.; Menezes, D.; Uzunyan, S.] No Illinois Univ, De Kalb, IL 60115 USA.
[Buchholz, D.; Kirby, M. H.; Schellman, H.; Yacoob, S.] Northwestern Univ, Evanston, IL 60208 USA.
[Evans, H.; Lammers, S.; Parua, N.; Price, D.; Van Kooten, R.; Zieminska, D.] Indiana Univ, Bloomington, IN 47405 USA.
[Parashar, N.] Purdue Univ Calumet, Hammond, IN 46323 USA.
[Chan, K. M.; Hildreth, M. D.; Osta, J.; Ruchti, R.; Smirnov, D.; Warchol, J.; Wayne, M.] Univ Notre Dame, Notre Dame, IN 46556 USA.
[Hauptman, J. M.; Lee, S. W.] Iowa State Univ, Ames, IA 50011 USA.
[Baringer, P.; Bean, A.; Chen, G.; Clutter, J.; McGivern, C. L.; Sekaric, J.; Wilson, G. W.] Univ Kansas, Lawrence, KS 66045 USA.
[Bolton, T. A.; Kaadze, K.; Maravin, Y.; Onoprienko, D.] Kansas State Univ, Manhattan, KS 66506 USA.
[Arov, M.; Greenwood, Z. D.; Sawyer, L.; Wobisch, M.] Louisiana Tech Univ, Ruston, LA 71272 USA.
[Eno, S.; Ferbel, T.; Wetstein, M.] Univ Maryland, College Pk, MD 20742 USA.
[Bose, T.] Boston Univ, Boston, MA 02215 USA.
[Alverson, G.; Barberis, E.; Facini, G.; Haley, J.; Hesketh, G.; Wood, D. R.] Northeastern Univ, Boston, MA 02215 USA.
[Alton, A.; Herner, K.; Neal, H. A.; Qian, J.; Xu, C.; Zhou, B.; Zhu, J.] Univ Michigan, Ann Arbor, MI 48109 USA.
[Abolins, M.; Benitez, J. A.; Brock, R.; Edmunds, D.; Fisher, W.; Geng, W.; Kraus, J.; Linnemann, J.; Piper, J.; Schwienhorst, R.] Michigan State Univ, E Lansing, MI 48824 USA.
[Melnitchouk, A.; Quinn, B.] Univ Mississippi, University, MS 38677 USA.
[Bloom, K.; Claes, D.; DeVaughan, K.; Dominguez, A.; Eads, M.; Johnston, D.; Katsanos, I.; Malik, S.; Snow, G. R.] Univ Nebraska, Lincoln, NE 68588 USA.
[Atramentov, O.; Duggan, D.; Evans, J. A.; Gershtein, Y.; Luty, M. A.] Rutgers State Univ, Piscataway, NJ 08855 USA.
[Gerbaudo, D.; Tully, C.] Princeton Univ, Princeton, NJ 08544 USA.
[Iashvili, I.; Jain, S.; Kharchilava, A.; Smith, K. J.] SUNY Buffalo, Buffalo, NY 14260 USA.
[Brooijmans, G.; Haas, A.; Parsons, J.; Tuts, P. M.; Zivkovic, L.] Columbia Univ, New York, NY 10027 USA.
[Demina, R.; Ferbel, T.; Garcia-Bellido, A.; Ginther, G.; Harel, A.; Petrillo, G.; Slattery, P.; Wang, M. H. L. S.; Zielinski, M.] Univ Rochester, Rochester, NY 14627 USA.
[Boline, D.; Chakrabarti, S.; Grannis, P. D.; Guo, F.; Guo, J.; Hobbs, J. D.; McCarthy, R.; Rijssenbeek, M.; Schamberger, R. D.; Strauss, E.; Tsybychev, D.] SUNY Stony Brook, Stony Brook, NY 11794 USA.
[Begel, M.; Evdokimov, A.; Gadfort, T.; Patwa, A.; Pleier, M. -A.; Protopopescu, S.; Snyder, S.; Yip, K.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Snow, J.] Langston Univ, Langston, OK 73050 USA.
[Abbott, B.; Gutierrez, P.; Hossain, S.; Severini, H.; Skubic, P.; Strauss, M.] Univ Oklahoma, Norman, OK 73019 USA.
[Hegab, H.; Khanov, A.; Rizatdinova, F.] Oklahoma State Univ, Stillwater, OK 74078 USA.
[Cho, D. K.; Cutts, D.; Ferapontov, A. V.; Heintz, U.; Jabeen, S.; Khatidze, D.; Landsberg, G.; Narain, M.; Pangilinan, M.; Parihar, V.; Partridge, R.; Yoo, H. D.] Brown Univ, Providence, RI 02912 USA.
[Brandt, A.; De, K.; Sosebee, M.; Spurlock, B.; White, A.; Yu, J.] Univ Texas Arlington, Arlington, TX 76019 USA.
[Kehoe, R.; Renkel, P.] So Methodist Univ, Dallas, TX 75275 USA.
[Chandra, A.; Corcoran, M.; Mackin, D.; Prewitt, M.] Rice Univ, Houston, TX 77005 USA.
[Buehler, M.; Hirosky, R.; Mulhearn, M.; Zelitch, S.] Univ Virginia, Charlottesville, VA 22901 USA.
[BackusMayes, J.; Burnett, T. H.; Dorland, T.; Goussiou, A.; Lubatti, H. J.; Schlobohm, S.; Watts, G.; Zhao, T.] Univ Washington, Seattle, WA 98195 USA.
RP Abazov, VM (reprint author), Joint Inst Nucl Res, Dubna, Russia.
RI Li, Liang/O-1107-2015; Juste, Aurelio/I-2531-2015; Wimpenny,
Stephen/K-8848-2013; Fisher, Wade/N-4491-2013; De, Kaushik/N-1953-2013;
Alves, Gilvan/C-4007-2013; Deliot, Frederic/F-3321-2014; Sharyy,
Viatcheslav/F-9057-2014; Lokajicek, Milos/G-7800-2014; Kupco,
Alexander/G-9713-2014; Kozelov, Alexander/J-3812-2014; Christoudias,
Theodoros/E-7305-2015; Guo, Jun/O-5202-2015; Gerbaudo,
Davide/J-4536-2012; Santos, Angelo/K-5552-2012; Ancu, Lucian
Stefan/F-1812-2010; Novaes, Sergio/D-3532-2012; Mercadante,
Pedro/K-1918-2012; Yip, Kin/D-6860-2013; Gutierrez, Phillip/C-1161-2011;
Bolton, Tim/A-7951-2012; bu, xuebing/D-1121-2012; Merkin,
Mikhail/D-6809-2012; Dudko, Lev/D-7127-2012; Perfilov,
Maxim/E-1064-2012; Boos, Eduard/D-9748-2012
OI Williams, Mark/0000-0001-5448-4213; Weber, Michele/0000-0002-2770-9031;
Grohsjean, Alexander/0000-0003-0748-8494; Melnychuk,
Oleksandr/0000-0002-2089-8685; Bassler, Ursula/0000-0002-9041-3057;
Price, Darren/0000-0003-2750-9977; Filthaut, Frank/0000-0003-3338-2247;
Bertram, Iain/0000-0003-4073-4941; Belanger-Champagne,
Camille/0000-0003-2368-2617; Qian, Jianming/0000-0003-4813-8167; Evans,
Harold/0000-0003-2183-3127; Malik, Sudhir/0000-0002-6356-2655; Blazey,
Gerald/0000-0002-7435-5758; Wahl, Horst/0000-0002-1345-0401; Gershtein,
Yuri/0000-0002-4871-5449; Bean, Alice/0000-0001-5967-8674; Carrera,
Edgar/0000-0002-0857-8507; Heredia De La Cruz, Ivan/0000-0002-8133-6467;
Haas, Andrew/0000-0002-4832-0455; Li, Liang/0000-0001-6411-6107; Sawyer,
Lee/0000-0001-8295-0605; Hedin, David/0000-0001-9984-215X; Juste,
Aurelio/0000-0002-1558-3291; Begel, Michael/0000-0002-1634-4399; de
Jong, Sijbrand/0000-0002-3120-3367; Landsberg, Greg/0000-0002-4184-9380;
Blessing, Susan/0000-0002-4455-7279; Duperrin,
Arnaud/0000-0002-5789-9825; Hoeneisen, Bruce/0000-0002-6059-4256;
Beuselinck, Raymond/0000-0003-2613-7446; Heinson,
Ann/0000-0003-4209-6146; grannis, paul/0000-0003-4692-2142; Wimpenny,
Stephen/0000-0003-0505-4908; De, Kaushik/0000-0002-5647-4489; Sharyy,
Viatcheslav/0000-0002-7161-2616; Christoudias,
Theodoros/0000-0001-9050-3880; Guo, Jun/0000-0001-8125-9433; Gerbaudo,
Davide/0000-0002-4463-0878; Ancu, Lucian Stefan/0000-0001-5068-6723;
Novaes, Sergio/0000-0003-0471-8549; Yip, Kin/0000-0002-8576-4311; Dudko,
Lev/0000-0002-4462-3192;
FU DOE; NSF (USA); CEA; CNRS/IN2P3 (France); FASI; Rosatom; RFBR (Russia);
CNPq; FAPERJ; FAPESP; FUNDUNESP (Brazil); DAE; DST (India); Colciencias
(Colombia); CONACyT (Mexico); KRF; KOSEF (Korea); CONICET; UBACyT
(Argentina); FOM (The Netherlands); STFC; Royal Society (United
Kingdom); MSMT; GACR (Czech Republic); CRC; NSERC (Canada); BMBF; DFG
(Germany); SFI (Ireland); Swedish Research Council (Sweden); CAS; CNSF
(China)
FX We thank the staffs at Fermilab and collaborating institutions and
acknowledge support from the DOE and NSF (USA); CEA and CNRS/IN2P3
(France); FASI, Rosatom, and RFBR (Russia); CNPq, FAPERJ, FAPESP, and
FUNDUNESP (Brazil); DAE and DST (India); Colciencias (Colombia); CONACyT
(Mexico); KRF and KOSEF (Korea); CONICET and UBACyT (Argentina); FOM
(The Netherlands); STFC and the Royal Society (United Kingdom); MSMT and
GACR (Czech Republic); CRC Program and NSERC (Canada); BMBF and DFG
(Germany); SFI (Ireland); The Swedish Research Council (Sweden); and CAS
and CNSF (China).
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PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 19
PY 2010
VL 105
IS 21
AR 211803
DI 10.1103/PhysRevLett.105.211803
PG 6
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SC Physics
GA 682MJ
UT WOS:000284407400007
PM 21231291
ER
PT J
AU Baek, SH
Sakai, H
Bauer, ED
Mitchell, JN
Kennison, JA
Ronning, F
Thompson, JD
AF Baek, S. -H.
Sakai, H.
Bauer, E. D.
Mitchell, J. N.
Kennison, J. A.
Ronning, F.
Thompson, J. D.
TI Anisotropic Spin Fluctuations and Superconductivity in "115" Heavy
Fermion Compounds: Co-59 NMR Study in PuCoGa5
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID SINGLE-CRYSTAL; RELAXATION; SYSTEMS; PURHGA5; METALS
AB We report results of Co-59 nuclear magnetic resonance measurements on a single crystal of superconducting PuCoGa5 in its normal state. The nuclear spin-lattice relaxation rates and the Knight shifts as a function of temperature reveal an anisotropy of spin fluctuations with finite wave vector q. By comparison with the isostructural members, we conclude that antiferromagnetic XY-type anisotropy of spin fluctuations plays an important role in mediating superconductivity in these heavy fermion materials.
C1 [Baek, S. -H.; Sakai, H.; Bauer, E. D.; Mitchell, J. N.; Kennison, J. A.; Ronning, F.; Thompson, J. D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Sakai, H.] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan.
RP Baek, SH (reprint author), IFW Dresden, PF 270116, D-01171 Dresden, Germany.
EM sakai.hironori@jaea.go.jp
RI Bauer, Eric/D-7212-2011; Mitchell, Jeremy/E-2875-2010; Baek,
Seung-Ho/F-4733-2011
OI Mitchell, Jeremy/0000-0001-7109-3505; Baek, Seung-Ho/0000-0002-0059-8255
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Materials Sciences and Engineering; Los Alamos Laboratory
FX We thank N. J. Curro, S. Kambe, S. E. Brown, H. Ikeda, and T. Takimoto
for useful suggestions and discussions. H. S. acknowledges the
hospitality of Los Alamos National Laboratory. Work at Los Alamos
National Laboratory was performed under the auspices of the U.S.
Department of Energy, Office of Basic Energy Sciences, Division of
Materials Sciences and Engineering, and supported in part by the Los
Alamos Laboratory Directed Research and Development program.
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JI Phys. Rev. Lett.
PD NOV 19
PY 2010
VL 105
IS 21
AR 217002
DI 10.1103/PhysRevLett.105.217002
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 682MJ
UT WOS:000284407400027
PM 21231343
ER
PT J
AU Davoudiasl, H
Morrissey, DE
Sigurdson, K
Tulin, S
AF Davoudiasl, Hooman
Morrissey, David E.
Sigurdson, Kris
Tulin, Sean
TI Unified Origin for Baryonic Visible Matter and Antibaryonic Dark Matter
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
AB We present a novel mechanism for generating both the baryon and dark matter densities of the Universe. A new Dirac fermion X carrying a conserved baryon number charge couples to the standard model quarks as well as a GeV-scale hidden sector. CP-violating decays of X, produced nonthermally in low-temperature reheating, sequester antibaryon number in the hidden sector, thereby leaving a baryon excess in the visible sector. The antibaryonic hidden states are stable dark matter. A spectacular signature of this mechanism is the baryon-destroying inelastic scattering of dark matter that can annihilate baryons at appreciable rates relevant for nucleon decay searches.
C1 [Davoudiasl, Hooman] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Morrissey, David E.; Tulin, Sean] TRIUMF, Theory Grp, Vancouver, BC V6T 2A3, Canada.
[Sigurdson, Kris] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada.
RP Davoudiasl, H (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
FU United States Department of Energy [DE-AC02-98CH10886]; NSERC of Canada
FX We thank M. Buckley, K. Freese, G. Kribs, M. Ramsey-Musolf, J. Shelton,
A. Spray, M. Wise, and K. Zurek for helpful conversations. D. M. and K.
S. thank the Aspen Center for Physics and Perimeter Institute for
Theoretical Physics for hospitality while this work was being completed.
S. T. thanks Caltech where a portion of this work was completed. The
work of H. D. is supported in part by the United States Department of
Energy under Grant Contract No. DE-AC02-98CH10886. The research of D. M.
and K. S. is supported in part by NSERC of Canada Discovery Grants.
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PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 19
PY 2010
VL 105
IS 21
AR 211304
DI 10.1103/PhysRevLett.105.211304
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 682MJ
UT WOS:000284407400003
PM 21231286
ER
PT J
AU Dean, DJ
Langanke, K
Nam, H
Nazarewicz, W
AF Dean, D. J.
Langanke, K.
Nam, H.
Nazarewicz, W.
TI Pairing Reentrance Phenomenon in Heated Rotating Nuclei in the
Shell-Model Monte Carlo Approach
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID ANGULAR-MOMENTUM; LEVEL DENSITIES; THERMAL-PROPERTIES; EXCITED NUCLEI;
SUPERCONDUCTIVITY; SUPERFLUIDITY; INERTIA; SYSTEMS; STATE; LIMIT
AB Rotational motion of heated (72)Ge is studied within the microscopic shell-model Monte Carlo approach. We investigate the angular momentum alignment and nuclear pairing correlations associated with J(pi) Cooper pairs as a function of the rotational frequency and temperature. The reentrance of pairing correlations with temperature is predicted at high rotational frequencies. It manifests itself through the anomalous behavior of specific heat and level density.
C1 [Dean, D. J.; Nazarewicz, W.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
[Langanke, K.] GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany.
[Langanke, K.] Tech Univ Darmstadt, Inst Kernphys, D-64291 Darmstadt, Germany.
[Nam, H.] Oak Ridge Natl Lab, Natl Ctr Computat Sci, Oak Ridge, TN 37831 USA.
[Nazarewicz, W.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Nazarewicz, W.] Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland.
RP Dean, DJ (reprint author), Oak Ridge Natl Lab, Div Phys, POB 2008, Oak Ridge, TN 37831 USA.
OI Dean, David/0000-0002-5688-703X
FU U.S. Department of Energy (University of Tennessee) [DE-FG02-96ER40963]
FX Useful comments from Nguyen Dinh Dang are gratefully appreciated.
Supported by the U.S. Department of Energy under Contract No.
DE-FG02-96ER40963 (University of Tennessee). Computational resources
provided by the National Energy Research Scientific Computing Center
(Berkeley) and the National Center for Computational Sciences (Oak
Ridge).
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PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 19
PY 2010
VL 105
IS 21
AR 212504
DI 10.1103/PhysRevLett.105.212504
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 682MJ
UT WOS:000284407400009
PM 21231296
ER
PT J
AU Laguna-Marco, MA
Haskel, D
Souza-Neto, N
Lang, JC
Krishnamurthy, VV
Chikara, S
Cao, G
van Veenendaal, M
AF Laguna-Marco, M. A.
Haskel, D.
Souza-Neto, N.
Lang, J. C.
Krishnamurthy, V. V.
Chikara, S.
Cao, G.
van Veenendaal, M.
TI Orbital Magnetism and Spin-Orbit Effects in the Electronic Structure of
BaIrO3
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID X-RAY-ABSORPTION; DENSITY-WAVE FORMATION; CIRCULAR-DICHROISM; WEAK
FERROMAGNETISM; PROBE; IR
AB The electronic structure and magnetism of Ir 5d(5) states in nonmetallic, weakly ferromagnetic BaIrO3 are probed with x-ray absorption techniques. Contrary to expectation, the Ir 5d orbital moment is found to be similar to 1.5 times larger than the spin moment. This unusual, atomiclike nature of the 5d moment is driven by a strong spin-orbit interaction in heavy Ir ions, as confirmed by the nonstatistical large branching ratio at Ir L-2,L-3 absorption edges. As a consequence, orbital interactions cannot be neglected when addressing the nature of magnetic ordering in BaIrO3. The local moment behavior persists even as the metallic-paramagnetic phase boundary is approached with Sr doping or applied pressure.
C1 [Laguna-Marco, M. A.; Haskel, D.; Souza-Neto, N.; Lang, J. C.; van Veenendaal, M.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Krishnamurthy, V. V.] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
[Chikara, S.; Cao, G.] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA.
[van Veenendaal, M.] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA.
RP Laguna-Marco, MA (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
EM laguna@icmm.csic.es; haskel@aps.anl.gov; veenendaal@niu.edu
RI Laguna-Marco, M. A./G-8042-2011; Souza-Neto, Narcizo/G-1303-2010;
Chikara, Shalinee/E-4654-2017
OI Laguna-Marco, M. A./0000-0003-4069-0395; Souza-Neto,
Narcizo/0000-0002-7474-8017;
FU U.S. Department of Energy (DOE), Office of Science, Office of Basic
Energy Sciences [DE-AC-02-06CH11357]; Spanish MEC; U.S. Department of
Energy (DOE), Office of Basic Energy Sciences, Division of Materials
Sciences and Engineering [DE-FG02-03ER46097]; NSF [DMR-0552267,
DMR-0856234]
FX Work at Argonne is supported by the U.S. Department of Energy (DOE),
Office of Science, Office of Basic Energy Sciences, under Contract No.
DE-AC-02-06CH11357. M. A. L.-M. acknowledges the Spanish MEC for a
post-doctoral grant. M. v. V. was supported by the U.S. Department of
Energy (DOE), Office of Basic Energy Sciences, Division of Materials
Sciences and Engineering, under Grant No. DE-FG02-03ER46097. S. C. and
G. C. were supported by NSF through Grants No. DMR-0552267 and No.
DMR-0856234.
NR 32
TC 58
Z9 59
U1 4
U2 76
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 19
PY 2010
VL 105
IS 21
AR 216407
DI 10.1103/PhysRevLett.105.216407
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 682MJ
UT WOS:000284407400019
PM 21231332
ER
PT J
AU Sikorski, M
Gutt, C
Chushkin, Y
Lippmann, M
Franz, H
AF Sikorski, M.
Gutt, C.
Chushkin, Y.
Lippmann, M.
Franz, H.
TI Dynamics at the Liquid-Vapor Interface of a Supercooled Organic Glass
Former
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID X-RAY-SCATTERING; TRANSITION TEMPERATURE; POLYSTYRENE FILMS;
POLYMER-FILMS; SURFACES
AB We investigated the dynamics near the liquid-vapor interface of the supercooled model organic glass former dibutyl phthalate by using surface-sensitive x-ray scattering techniques. Our results reveal significant enhancement of the relaxation rate over a wide length-scales range. The analysis of the dispersion relation of long-wavelength surface fluctuations yields a nonzero value of the share modulus near the free surface. At the molecular level, the dynamics in the near surface region (10-15 nm) is inhomogeneous. The mobility is decreasing with increasing distance from the free surface. Below the bulk glass transition, two distinct relaxation times were observed differing by 1 order of magnitude. The observed fast relaxation proves the existence of a high mobility liquidlike surface layer of 10 nm thickness on top of a frozen in bulk system.
C1 [Sikorski, M.; Gutt, C.; Lippmann, M.; Franz, H.] Deutsch Elektronen Synchrotron HASYLAB DESY, D-22607 Hamburg, Germany.
[Chushkin, Y.] ESRF, F-38043 Grenoble, France.
RP Sikorski, M (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RI Gutt, Christian/H-9846-2012; Gutt, Christian/F-6337-2013
NR 22
TC 10
Z9 10
U1 0
U2 14
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 19
PY 2010
VL 105
IS 21
AR 215701
DI 10.1103/PhysRevLett.105.215701
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 682MJ
UT WOS:000284407400017
PM 21231323
ER
PT J
AU DiDonato, RJ
Young, ND
Butler, JE
Chin, KJ
Hixson, KK
Mouser, P
Lipton, MS
DeBoy, R
Methe, BA
AF DiDonato, Raymond J., Jr.
Young, Nelson D.
Butler, Jessica E.
Chin, Kuk-Jeong
Hixson, Kim K.
Mouser, Paula
Lipton, Mary S.
DeBoy, Robert
Methe, Barbara A.
TI Genome Sequence of the Deltaproteobacterial Strain NaphS2 and Analysis
of Differential Gene Expression during Anaerobic Growth on Naphthalene
SO PLOS ONE
LA English
DT Article
ID POLYCYCLIC AROMATIC-HYDROCARBONS; SULFATE-REDUCING BACTERIUM; MARINE
HARBOR SEDIMENTS; QUANTIFYING EXPRESSION; DENITRIFYING BACTERIUM;
ENRICHMENT CULTURE; INITIAL REACTION; DEGRADATION; GEOBACTERACEAE;
TOLUENE
AB Background: Anaerobic polycyclic hydrocarbon (PAH) degradation coupled to sulfate reduction may be an important mechanism for in situ remediation of contaminated sediments. Steps involved in the anaerobic degradation of 2-methylnaphthalene have been described in the sulfate reducing strains NaphS3, NaphS6 and N47. Evidence from N47 suggests that naphthalene degradation involves 2-methylnaphthalene as an intermediate, whereas evidence in NaphS2, NaphS3 and NaphS6 suggests a mechanism for naphthalene degradation that does not involve 2-methylnaphthalene. To further characterize pathways involved in naphthalene degradation in NaphS2, the draft genome was sequenced, and gene and protein expression examined.
Results: Draft genome sequencing, gene expression analysis, and proteomic analysis revealed that NaphS2 degrades naphthoyl-CoA in a manner analogous to benzoyl-CoA degradation. Genes including the previously characterized NmsA, thought to encode an enzyme necessary for 2-methylnaphthalene metabolism, were not upregulated during growth of NaphS2 on naphthalene, nor were the corresponding protein products. NaphS2 may possess a non-classical dearomatizing enzyme for benzoate degradation, similar to one previously characterized in Geobacter metallireducens. Identification of genes involved in toluene degradation in NaphS2 led us to determine that NaphS2 degrades toluene, a previously unreported capacity. The genome sequence also suggests that NaphS2 may degrade other monoaromatic compounds.
Conclusion: This study demonstrates that steps leading to the degradation of 2-naphthoyl-CoA are conserved between NaphS2 and N47, however while NaphS2 possesses the capacity to degrade 2-methylnaphthalene, naphthalene degradation likely does not proceed via 2-methylnaphthalene. Instead, carboxylation or another form of activation may serve as the first step in naphthalene degradation. Degradation of toluene and 2-methylnaphthalene, and the presence of at least one bss-like and bbs-like gene cluster in this organism, suggests that NaphS2 degrades both compounds via parallel mechanisms. Elucidation of the key genes necessary for anaerobic naphthalene degradation may provide the ability to track naphthalene degradation through in situ transcript monitoring.
C1 [DiDonato, Raymond J., Jr.; Young, Nelson D.; Butler, Jessica E.; Mouser, Paula] Univ Massachusetts, Dept Microbiol, Amherst, MA 01003 USA.
[Chin, Kuk-Jeong] Georgia State Univ, Dept Biol, Atlanta, GA USA.
[Hixson, Kim K.; Lipton, Mary S.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA.
[DeBoy, Robert; Methe, Barbara A.] J Craig Venter Inst, Rockville, MD USA.
RP DiDonato, RJ (reprint author), Univ Massachusetts, Dept Microbiol, Amherst, MA 01003 USA.
EM rdidonat@hotmail.com
FU Office of Naval [N000140310315]
FX This research was funded by the Office of Naval Research grant
N000140310315. ONR's website is http://www.onr.navy.mil. The funders had
no role in study design, data collection and analysis, decision to
publish, or preparation of the manuscript.
NR 41
TC 25
Z9 25
U1 2
U2 54
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD NOV 19
PY 2010
VL 5
IS 11
AR e14072
DI 10.1371/journal.pone.0014072
PG 11
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 682JY
UT WOS:000284400100017
PM 21124915
ER
PT J
AU Ronald, PC
Beutler, B
AF Ronald, Pamela C.
Beutler, Bruce
TI Plant and Animal Sensors of Conserved Microbial Signatures
SO SCIENCE
LA English
DT Review
ID INNATE IMMUNITY; DISEASE RESISTANCE; SIGNALING PATHWAYS; TOLL; GENE;
BACTERIAL; RECOGNITION; ARABIDOPSIS; RECEPTORS; FLAGELLIN
AB The last common ancestor of plants and animals may have lived 1 billion years ago. Plants and animals have occasionally exchanged genes but, for the most part, have countered selective pressures independently. Microbes (bacteria, eukaryotes, and viruses) were omnipresent threats, influencing the direction of multicellular evolution. Receptors that detect molecular signatures of infectious organisms mediate awareness of nonself and are integral to host defense in plants and animals alike. The discoveries leading to elucidation of these receptors and their ligands followed a similar logical and methodological pathway in both plant and animal research.
C1 [Ronald, Pamela C.] Univ Calif Davis, Dept Plant Pathol, Davis, CA 95616 USA.
[Ronald, Pamela C.] Joint Bioenergy Inst, Emeryville, CA 94710 USA.
[Ronald, Pamela C.] Kyung Hee Univ, Crop Biotech Inst, Yongin 446701, South Korea.
[Ronald, Pamela C.] Kyung Hee Univ, Dept Plant Mol Syst Biotechnol, Yongin 446701, South Korea.
[Beutler, Bruce] Scripps Res Inst, Dept Genet, La Jolla, CA 92037 USA.
RP Ronald, PC (reprint author), Univ Calif Davis, Dept Plant Pathol, Davis, CA 95616 USA.
EM pcronald@ucdavis.edu
NR 27
TC 118
Z9 125
U1 4
U2 56
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 0036-8075
J9 SCIENCE
JI Science
PD NOV 19
PY 2010
VL 330
IS 6007
BP 1061
EP 1064
DI 10.1126/science.1189468
PG 4
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 682BU
UT WOS:000284374700031
PM 21097929
ER
PT J
AU Bajaj, VS
Paulsen, J
Harel, E
Pines, A
AF Bajaj, Vikram S.
Paulsen, Jeffrey
Harel, Elad
Pines, Alexander
TI Zooming In on Microscopic Flow by Remotely Detected MRI
SO SCIENCE
LA English
DT Article
ID MAGNETIC-RESONANCE; MICROFLUIDIC CHIP; NMR; RESOLUTION; MAGNETOMETER;
BIOSENSOR
AB Magnetic resonance imaging (MRI) can elucidate the interior structure of an optically opaque object in unparalleled detail but is ultimately limited by the need to enclose the object within a detection coil; acquiring the image with increasingly smaller pixels reduces the sensitivity, because each pixel occupies a proportionately smaller fraction of the detector's volume. We developed a technique that overcomes this limitation by means of remotely detected MRI. Images of fluids flowing in channel assemblies are encoded into the phase and intensity of the constituent molecules' nuclear magnetic resonance signals and then decoded by a volume-matched detector after the fluids flow out of the sample. In combination with compressive sampling, we thus obtain microscopic images of flow and velocity distributions similar to 10(6) times faster than is possible with conventional MRI on this hardware. Our results illustrate the facile integration of MRI with microfluidic assays and suggest generalizations to other systems involving microscopic flow.
C1 [Bajaj, Vikram S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RP Bajaj, VS (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
EM vsbajaj@lbl.gov; pines@berkeley.edu
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Materials Sciences and Engineering [DE-AC02-05CH11231]
FX We thank D. Wemmer for his careful reading of the manuscript and L.-S.
Bouchard for helpful discussions. Supported by the U.S. Department of
Energy, Office of Basic Energy Sciences, Division of Materials Sciences
and Engineering under contract DE-AC02-05CH11231 (V. S. B., J.P., E. H.,
A. P.). We thank the Agilent Foundation for its generous and
unrestricted gift. The Lawrence Berkeley National Laboratory has applied
for a patent on aspects of this method. The authors declare no competing
interests. Author contributions: V. S. B., J.P., E. H., and A. P.
designed the experiments. V. S. B., J.P., and E. H. performed the
experiments. V. S. B. and J.P. analyzed the data and wrote the paper.
NR 27
TC 36
Z9 36
U1 1
U2 49
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 0036-8075
J9 SCIENCE
JI Science
PD NOV 19
PY 2010
VL 330
IS 6007
BP 1078
EP 1081
DI 10.1126/science.1192313
PG 4
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 682BU
UT WOS:000284374700036
PM 20929729
ER
PT J
AU Park, SI
Shenoi, J
Pagel, JM
Hamlin, DK
Wilbur, DS
Orgun, N
Kenoyer, AL
Frayo, S
Axtman, A
Back, T
Lin, YK
Fisher, DR
Gopal, AK
Green, DJ
Press, OW
AF Park, Steven I.
Shenoi, Jaideep
Pagel, John M.
Hamlin, Don K.
Wilbur, D. Scott
Orgun, Nural
Kenoyer, Aimee L.
Frayo, Shani
Axtman, Amanda
Back, Tom
Lin, Yukang
Fisher, Darrell R.
Gopal, Ajay K.
Green, Damian J.
Press, Oliver W.
TI Conventional and pretargeted radioimmunotherapy using bismuth-213 to
target and treat non-Hodgkin lymphomas expressing CD20: a preclinical
model toward optimal consolidation therapy to eradicate minimal residual
disease
SO BLOOD
LA English
DT Article
ID B-CELL LYMPHOMAS; ANTI-CD20 MONOCLONAL-ANTIBODY; STREPTAVIDIN FUSION
PROTEIN; CHEMOTHERAPY PLUS RITUXIMAB; POLYMERASE-CHAIN-REACTION; IODINE
I-131 TOSITUMOMAB; ALPHA-EMITTING NUCLIDES; REFRACTORY LOW-GRADE;
FOLLICULAR LYMPHOMA; ADVANCED-STAGE
AB Radioimmunotherapy (RIT) with alpha-emitting radionuclides is an attractive approach for the treatment of minimal residual disease because the short path lengths and high energies of alpha-particles produce optimal cytotoxicity at small target sites while minimizing damage to surrounding normal tissues. Pretargeted RIT (PRIT) using antibody-streptavidin (Ab-SA) constructs and radiolabeled biotin allows rapid, specific localization of radioactivity at tumor sites, making it an optimal method to target alpha-emitters with short half-lives, such as bismuth-213 ((213)Bi). Athymic mice bearing Ramos lymphoma xenografts received anti-CD20 1F5(scFv)(4)SA fusion protein (FP), followed by a dendrimeric clearing agent and [(213)Bi] DOTA-biotin. After 90 minutes, tumor uptake for 1F5(scFv) 4SA was 16.5% +/- 7.0% injected dose per gram compared with 2.3% +/- .9% injected dose per gram for the control FP. Mice treated with anti-CD20 PRIT and 600 mu Ci [(213)Bi] DOTA-biotin exhibited marked tumor growth delays compared with controls (mean tumor volume .01 +/- .02 vs. 203.38 +/- 83.03 mm(3) after 19 days, respectively). The median survival for the 1F5(scFv) 4SA group was 90 days compared with 23 days for the control FP (P < .0001). Treatment was well tolerated, with no treatment-related mortalities. This study demonstrates the favorable biodistribution profile and excellent therapeutic efficacy attainable with (213)Bi-labeled anti-CD20 PRIT. (Blood. 2010;116(20):4231-4239)
C1 [Shenoi, Jaideep; Pagel, John M.; Orgun, Nural; Kenoyer, Aimee L.; Frayo, Shani; Axtman, Amanda; Lin, Yukang; Gopal, Ajay K.; Green, Damian J.; Press, Oliver W.] Fred Hutchinson Canc Res Ctr, Seattle, WA 98109 USA.
[Park, Steven I.] Univ N Carolina, Dept Med, Chapel Hill, NC USA.
[Shenoi, Jaideep; Pagel, John M.; Gopal, Ajay K.; Green, Damian J.; Press, Oliver W.] Univ Washington, Dept Med, Seattle, WA USA.
[Hamlin, Don K.; Wilbur, D. Scott] Univ Washington, Dept Radiat Oncol, Seattle, WA 98195 USA.
[Back, Tom] Univ Gothenburg, Sahlgrenska Acad, Dept Radiat Phys, Gothenburg, Sweden.
[Fisher, Darrell R.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Press, OW (reprint author), Fred Hutchinson Canc Res Ctr, 1100 Fairview Ave N,M-S D3-395, Seattle, WA 98109 USA.
EM press@u.washington.edu
OI Back, Tom/0000-0002-3375-9473
FU National Institutes of Health [PO1 CA44991, RO1 CA109663]; Lymphoma
Research Foundation
FX This work was supported by National Institutes of Health grants PO1
CA44991 and RO1 CA109663, the Lymphoma Research Foundation (O.W.P.) and
gifts from David and Patricia Giuliani, Mary and Geary Britton-Simmons,
James and Sherry Raisbeck, the Wyner-Stokes Foundation, and the Hext
Family Foundation. S.I.P. is the recipient of a Lymphoma Research
Foundation Fellowship Award.
NR 57
TC 21
Z9 22
U1 3
U2 7
PU AMER SOC HEMATOLOGY
PI WASHINGTON
PA 1900 M STREET. NW SUITE 200, WASHINGTON, DC 20036 USA
SN 0006-4971
J9 BLOOD
JI Blood
PD NOV 18
PY 2010
VL 116
IS 20
BP 4231
EP 4239
DI 10.1182/blood-2010-05-282327
PG 9
WC Hematology
SC Hematology
GA 681YC
UT WOS:000284359400031
PM 20702781
ER
PT J
AU Greyson, EC
Stepp, BR
Chen, XD
Schwerin, AF
Paci, I
Smith, MB
Akdag, A
Johnson, JC
Nozik, AJ
Michl, J
Ratner, MA
AF Greyson, Eric C.
Stepp, Brian R.
Chen, Xudong
Schwerin, Andrew F.
Paci, Irina
Smith, Millicent B.
Akdag, Akin
Johnson, Justin C.
Nozik, Arthur J.
Michl, Josef
Ratner, Mark A.
TI Singlet Exciton Fission for Solar Cell Applications Energy Aspects of
Interchromophore Coupling
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID DENSITY-FUNCTIONAL THEORY; PI-ELECTRON STATES; TETRACENE CRYSTALS;
MAGNETIC-FIELD; POLY(P-PHENYLENE VINYLENE); TRIPLET EXCITATIONS;
TRANS-BUTADIENE; FUSION; FLUORESCENCE; ANTHRACENE
AB Singlet exciton fission, a process that converts one singlet exciton to a pair of triplet excitons has the potential to enhance the efficiency of both bulk heterojunction and dye-sensitized solar cells and is understood in crystals but not well understood in molecules Previous studies have identified promising building blocks for singlet fission in molecular systems but little work has investigated how these individual chromophores should be combined to maximize triplet yield We consider the effects of chemically connecting two chromophores to create a coupled chromophore pair and compute how various structural choices alter the thermodynamic and kinetic parameters likely to control singlet fission yield We use density functional theory to compute the electron transfer matrix element and the thermodynamics of fission for several promising chromophore pairs and find a trade-off between the desire to maximize this element and the desire to keep the singlet fission process exoergic We identify promising molecular systems for singlet fission and suggest future experiments
C1 [Chen, Xudong; Schwerin, Andrew F.; Smith, Millicent B.; Akdag, Akin; Michl, Josef] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA.
[Greyson, Eric C.; Paci, Irina; Ratner, Mark A.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
[Johnson, Justin C.; Nozik, Arthur J.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Stepp, Brian R.; Michl, Josef] Acad Sci Czech Republic, Inst Organ Chem & Biochem, CR-16610 Prague 6, Czech Republic.
RP Michl, J (reprint author), Univ Colorado, Dept Chem & Biochem, 215 UCB, Boulder, CO 80309 USA.
RI Michl, Josef/G-9376-2014; Nozik, Arthur/A-1481-2012; Nozik,
Arthur/P-2641-2016
FU U S Department of Energy EERE [DOE XAT 5-33636 01]; U S Department of
Energy Office of Basic Energy Sciences Division of Chemical Sciences
Geosciences and Biosciences; Ministry of Education of the Czech Republic
[N00014 05 1 0021, OISE-0532040]; DOE [1542544/XAT 5 33636 01, DE FG36
08GO18017]
FX This project was partly supported by the U S Department of Energy EERE
DOE XAT 5-33636 01 AJN and JCJ were supported by the U S Department of
Energy Office of Basic Energy Sciences Division of Chemical Sciences
Geosciences and Biosciences We are also grateful to the chemistry
division of the ONR (N00014 05 1 0021) NSF (OISE-0532040) KONTAKT
project of the Ministry of Education of the Czech Republic and to the
DOE (1542544/XAT 5 33636 01 DE FG36 08GO18017) for support of this work
This paper is dedicated to Professor Mike Wasielewski scholar leader
teacher scientist and treasured friend
NR 72
TC 63
Z9 64
U1 7
U2 75
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD NOV 18
PY 2010
VL 114
IS 45
BP 14223
EP 14232
DI 10.1021/jp909002d
PG 10
WC Chemistry, Physical
SC Chemistry
GA 677US
UT WOS:000284018000014
PM 20025238
ER
PT J
AU Xie, M
Gruen, DM
AF Xie, Ming
Gruen, Dieter M.
TI Potential Impact of ZT=4 Thermoelectric Materials on Solar Thermal
Energy Conversion Technologies
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
AB State-of-the-art methodologies for the conversion of solar thermal power to electricity are based on conventional electromagnetic induction techniques If appropriate ZT = 4 thermoelectric materials were available, it is likely that conversion efficiencies of 30-40% could be achieved The availability of all solid state electricity generation would be a long awaited development in part because of the elimination of moving parts This paper presents a preliminary examination of the potential performance of ZT = 4 power generators in comparison with Stirling engines taking into account specific mass, volume and cost as well as system reliability High-performance thermoelectrics appear to have distinct advantages over magnetic induction technologies
C1 [Xie, Ming; Gruen, Dieter M.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Xie, Ming] Michigan Technol Univ, Dept Phys, Houghton, MI 49931 USA.
RP Gruen, DM (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
RI xie, ming/A-1438-2012
FU U S Department of Energy Office of Basic Energy Science and Energy
Efficiency Renewable Energy, Office of Vehicle Technologies at Argonne
National Laboratory [DE-AC02-06CH11357]
FX This work was performed under the auspices of the U S Department of
Energy Office of Basic Energy Science and Energy Efficiency Renewable
Energy, Office of Vehicle Technologies, under Contract No
DE-AC02-06CH11357 at Argonne National Laboratory managed by the
University of Chicago LLC
NR 16
TC 15
Z9 16
U1 1
U2 12
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD NOV 18
PY 2010
VL 114
IS 45
BP 14339
EP 14342
DI 10.1021/jp9117387
PG 4
WC Chemistry, Physical
SC Chemistry
GA 677US
UT WOS:000284018000027
PM 20196558
ER
PT J
AU Poluektov, OG
Filippone, S
Martin, N
Sperlich, A
Deibel, C
Dyakonov, V
AF Poluektov, Oleg G.
Filippone, Salvatore
Martin, Nazario
Sperlich, Andreas
Deibel, Carsten
Dyakonov, Vladimir
TI Spin Signatures of Photogenerated Radical Anions in
Polymer-[70]Fullerene Bulk Heterojunctions High Frequency Pulsed EPR
Spectroscopy
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID RESONANCE; FULLERENES; EFFICIENT; POLYMER; CELLS; C-70; C-60; PAIR
AB Charged polarons in thin films of polymer-fullerene composites are investigated by light-induced electron paramagnetic resonance (EPR) at 9 5 GHz (X-band) and 130 GHz (D-band) The materials studied were poly(3-hexylthiophene) (PHT), [6,6]-phenyl-C61-butyric acid methyl ester (C(60)-PCBM), and two different soluble C(70)-derivates C(70)-PCBM and diphenylmethano[70]fullerene oligoether (C(70)-DPM-OE) The first experimental identification of the negative polaron localized on the C(70)-cage in polymer-fullerene bulk heterojunctions has been obtained When recorded at conventional X-band EPR, this signal is overlapping with the signal of the positive polaron, which does not allow for its direct experimental identification Owing to the superior spectral resolution of the high frequency D-band EPR, we were able to separate light-induced signals from P(+) and P(-) in PHT-C(70) bulk heterojunctions Comparing signals from C(70)-derivatives with different side-chains we have obtained experimental proof that the polaron is localized on the cage of the C(70) molecule
C1 [Poluektov, Oleg G.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Filippone, Salvatore; Martin, Nazario] Univ Complutense Madrid, Fac Ciencias Quim, Dept Quim Organ, E-28040 Madrid, Spain.
[Sperlich, Andreas; Deibel, Carsten; Dyakonov, Vladimir] Univ Wurzburg, D-97074 Wurzburg, Germany.
[Sperlich, Andreas; Deibel, Carsten; Dyakonov, Vladimir] Bavarian Ctr Appl Energy Res eV ZAE Bayern, D-97074 Wurzburg, Germany.
RP Poluektov, OG (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
RI Deibel, Carsten/A-8735-2008; Dyakonov, Vladimir/F-6862-2013; Filippone,
Salvatore/K-2360-2014; Martin, Nazario/B-4329-2008;
OI Deibel, Carsten/0000-0002-3061-7234; Dyakonov,
Vladimir/0000-0001-8725-9573; Filippone, Salvatore/0000-0002-2860-8566;
Martin, Nazario/0000-0002-5355-1477; Sperlich,
Andreas/0000-0002-0850-6757
FU U S Department of Energy Office of Science Office of Basic Energy
Sciences; German Research Foundation DFG [DY18/6 1]; MICINN of Spain
[CT2008-00795/BQU, 2010C 07-25200]; CAM [P PPQ 000225 0505]; ANSER
FX The work at ANL was supported as part of the ANSER an Energy Frontier
Research Center funded by the U S Department of Energy Office of Science
Office of Basic Energy Sciences The work at the University of Wurzburg
was supported by the German Research Foundation DFG, within the SPP
"Elementary processes in organic photovoltaics', under contract DY18/6 1
The MICINN of Spain (project CT2008-00795/BQU, R&C program, and
Consolider Ingenio 2010C 07-25200) and the CAM (project P PPQ 000225
0505) are also acknowledged V D acknowledges financial support from
ANSER during his research visit at ANL
NR 17
TC 37
Z9 37
U1 0
U2 14
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD NOV 18
PY 2010
VL 114
IS 45
BP 14426
EP 14429
DI 10.1021/jp1012347
PG 4
WC Chemistry, Physical
SC Chemistry
GA 677US
UT WOS:000284018000038
PM 20392099
ER
PT J
AU Mehmood, F
Greeley, J
Zapol, P
Curtiss, LA
AF Mehmood, F.
Greeley, J.
Zapol, P.
Curtiss, L. A.
TI Comparative Density Functional Study of Methanol Decomposition on Cu-4
and Co-4 Clusters
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID GENERALIZED GRADIENT APPROXIMATION; INITIO MOLECULAR-DYNAMICS;
FISCHER-TROPSCH SYNTHESIS; AB-INITIO; HYDROGEN-PRODUCTION; PARTIAL
OXIDATION; ADSORPTION; CATALYST; SURFACES; CU(110)
AB A density functional theory study of the decomposition of methanol on Cu-4 and Co-4 clusters is presented The reaction intermediates and activation barriers have been determined for reaction steps to form H-2 and CO For both clusters, methanol decomposition initiated by C-H and O-H bond breaking was investigated In the case of a Cu-4 cluster, methanol dehydrogenation through hydroxymethyl (CH2OH), hydroxymethylene (CHOH), formyl (CHO), and carbon monoxide (CO) is found to be slightly more favorable For a Co-4 cluster, the dehydrogenation pathway through methoxy (CH3O) and formaldehyde (CH2O) is slightly more favorable Each of these pathways results in formation of CO and H-2 The Co cluster pathway is very favorable thermodynamically and kinetically for dehydrogenation However, since CO binds strongly, it is likely to poison methanol decomposition to H-2 and CO at low temperatures In contrast, for the Cu cluster, CO poisoning is not likely to be a problem since it does not bind strongly, but the dehydrogenation steps are not energetically favorable Pathways involving C-O bond cleavage are even less energetically favorable The results are compared to our previous study of methanol decomposition on Pd-4 and Pd-8 clusters Finally, all reaction energy changes and transition state energies, including those for the Pd clusters, are related in a linear, Bronsted-Evans-Polanyi plot
C1 [Mehmood, F.; Zapol, P.; Curtiss, L. A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Greeley, J.; Curtiss, L. A.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Curtiss, LA (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
RI Zapol, Peter/G-1810-2012
OI Zapol, Peter/0000-0003-0570-9169
FU U S Department of Energy [DE AC0206CH11357]
FX Work including use of the Center for Nanoscale Materials is supported by
the U S Department of Energy under Contract DE AC0206CH11357 We
acknowledge grants of computer time from EMSL a national scientific user
facility located at Pacific Northwest National Laboratory and the ANL
Laboratory Computing Resource Center (LCRC)
NR 56
TC 17
Z9 17
U1 7
U2 15
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD NOV 18
PY 2010
VL 114
IS 45
BP 14458
EP 14466
DI 10.1021/jp101594z
PG 9
WC Chemistry, Physical
SC Chemistry
GA 677US
UT WOS:000284018000042
PM 20704288
ER
PT J
AU Szarko, JM
Rolczynski, BS
Guo, JC
Liang, YY
He, F
Mara, MW
Yu, LP
Chen, LX
AF Szarko, Jodi M.
Rolczynski, Brian S.
Guo, Jianchang
Liang, Yongye
He, Feng
Mara, Michael W.
Yu, Luping
Chen, Lin X.
TI Electronic Processes in Conjugated Diblock Oligomers Mimicking Low
Band-Gap Polymers. Experimental and Theoretical Spectral Analysis
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID HETEROJUNCTION SOLAR-CELLS; ALPHA-OLIGOTHIOPHENES; ORGANIC
PHOTOVOLTAICS; THIOPHENE OLIGOMERS; CHARGE-TRANSPORT; CHAIN-LENGTH;
THIENOPYRAZINE; COPOLYMERS; ABSORPTION; RELAXATION
AB Conjugated oligomers containing a common central thienothiophene unit symmetrically connected to two identical thiophene oligomers were studied as model systems for a series of low bandgap organic diblock copolymers The oligothiophene side chain fragments were varied in length as a means to tune the electronic coupling between the thienothiophene and oligothiophene moieties The fragment length dependence of both the ground and excited-state electronic and structural properties of a series of diblock oligomers were investigated in detail The charge transfer character in these diblock oligomers, revealed by their optical absorption and fluorescence spectra, is responsible for their low band gap and energy gap tunability compared with their homooligomer counterparts The electronic spectra and theoretical analysis indicate a partially localized central charge in the first excited state Using experimental results and comparing them with theoretical calculations we estimate that the electronic effects from a single thienothiophene unit spreads over seven to nine adjacent units through pi-conjugation along the oligomers
C1 [Guo, Jianchang; Liang, Yongye; He, Feng; Yu, Luping] Univ Chicago, Dept Chem, Chicago, IL 60637 USA.
[Guo, Jianchang; Liang, Yongye; He, Feng; Yu, Luping] Univ Chicago, James Franck Inst, Chicago, IL 60637 USA.
[Szarko, Jodi M.; Rolczynski, Brian S.; Guo, Jianchang; Mara, Michael W.; Chen, Lin X.] Northwestern Univ, Argonne NW Solar Energy Res ANSER Ctr, Evanston, IL 60208 USA.
[Szarko, Jodi M.; Rolczynski, Brian S.; Guo, Jianchang; Mara, Michael W.; Chen, Lin X.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Szarko, Jodi M.; Rolczynski, Brian S.; Mara, Michael W.; Chen, Lin X.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
RP Yu, LP (reprint author), Univ Chicago, Dept Chem, 929 E 57th St, Chicago, IL 60637 USA.
RI Liang, Yongye/D-1099-2010; Liang, Yongye/D-9275-2012; He,
Feng/J-2878-2014;
OI He, Feng/0000-0002-8596-1366; Szarko, Jodi/0000-0002-2181-9408
FU Division of Chemical Sciences Office of Basic Energy Sciences; U S
Department of Energy [DE AC02-06CH11357]; National Science Foundation;
University of Chicago; Northwestern University; U S Department of
Energy, Office of Science, Office of Basic Energy Sciences [DE
SC0001059]
FX This work is supported by the Division of Chemical Sciences Office of
Basic Energy Sciences the U S Department of Energy under contract DE
AC02-06CH11357 (for L X C) We gratefully acknowledge the financial
support of the National Science Foundation and the NSF MRSEC program at
the University of Chicago The UC/ANL collaborative seed grant (L Y and L
X C) and the Setup fund from Northwestern University (L X C) provided
partial support of this research The most recent fluorescence
upconversion anisotropy work was supported as part of the ANSER Center
an Energy Frontier Research Center funded by the U S Department of
Energy, Office of Science, Office of Basic Energy Sciences under award
number DE SC0001059 We would also like to thank Carmen Herrmann for
helpful discussions
NR 59
TC 18
Z9 18
U1 4
U2 27
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD NOV 18
PY 2010
VL 114
IS 45
BP 14505
EP 14513
DI 10.1021/jp101925b
PG 9
WC Chemistry, Physical
SC Chemistry
GA 677US
UT WOS:000284018000047
PM 20491461
ER
PT J
AU Lockard, JV
Kabehie, S
Zink, JI
Smolentsev, G
Soldatov, A
Chen, LX
AF Lockard, Jenny V.
Kabehie, Sanaz
Zink, Jeffrey I.
Smolentsev, Grigory
Soldatov, Alexander
Chen, Lin X.
TI Influence of Ligand Substitution on Excited State Structural Dynamics in
Cu(I) Bisphenanthroline Complexes
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID MOLECULAR-STRUCTURES; ENERGY-TRANSFER; COPPER(I) PHENANTHROLINES;
PHOTOPHYSICAL PROPERTIES; INORGANIC EXCIPLEXES; CU(NN)(2)(+) SYSTEMS;
CU(NN)2+ SYSTEMS; SOLID-STATE; X-RAY; CRYSTAL
AB This study explores the influences of steric hindrance and excited state solvent ligation on the excited state dynamics of Cu-I diimine complexes Ultrafast excited state dynamics of Cu(I)bis(3,8-di(ethynyltrityl)-1,10-phenanthroline) [Cu-I(detp)(2)](+) are measured using femtosecond transient absorption spectroscopy The steady state electronic absorption spectra and measured lifetimes are compared to those of Cu(I)bis(1,10-phenanthroline) [Cu-I(phen)(2)](+), and Cu(I)bis(2-9-dimethyl-1,10-phenanthroline), [Cu-I(dmp)(2)](+), model complexes to determine the influence of different substitution patterns of the phenanthroline ligand on the structural dynamics associated with the metal to ligand charge transfer excited states Similarities between the [Cu-I(detp)(2)](+) and [Cu-I(phen)(2)](+) excited state lifetimes were observed in both coordinating and noncoordinating solvents and attributed to the lack of steric hindrance from substitution at the 2- and 9-positions The solution-phase X-ray absorption spectra of [Cu-I(detp)(2)](+), [Cu-I(phen)(2)](+), and [Cu-I(dmp)(2)](+) are reported along with finite difference method calculations that are used to determine the degree of ground state dihedral angle distortion in solution and to account for the pre-edge features observed in the XANES region
C1 [Lockard, Jenny V.; Chen, Lin X.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Chen, Lin X.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
[Kabehie, Sanaz; Zink, Jeffrey I.] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA.
[Smolentsev, Grigory; Soldatov, Alexander] So Fed Univ, Res Ctr Nanoscale Struct Matter, Rostov Na Donu 344090, Russia.
[Smolentsev, Grigory] Lund Univ, Dept Chem Phys, SE-22100 Lund, Sweden.
RP Lockard, JV (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
RI Soldatov, Alexander/E-9323-2012
OI Soldatov, Alexander/0000-0001-8411-0546
FU U S Department of Energy Office of Science, Office of Basic Energy
Sciences [DE AC02-06CH11357, DE-AC0206CH11357]; Joint Civilian Research
and Development Fund [U S RUC1 2870 RO 07]; Russian Foundation of Basic
Research (Russia) [07 03 91142]; ERC; NSF [NSF CHE 0809384]
FX We would like to acknowledge the support by the U S Department of Energy
Office of Science, Office of Basic Energy Sciences under Contracts DE
AC02-06CH11357 Work at the Advanced Photon Source was supported by the U
S Department of Energy Office of Science Office of Basic Energy Sciences
under Contract No DE-AC02 06CH11357 The research is supported by the
Joint Civilian Research and Development Fund Grant (U S RUC1 2870 RO
07)/Russian Foundation of Basic Research (Russia, 07 03 91142) Work of G
S was partially supported by ERC Advanced investigator grant to V
Sundstrom VISCHEM 226136 The work of SK and JIZ was supported by the NSF
grant NSF CHE 0809384 We thank Dr Karen Mulfort for synthesizing the
[Cu(I)phen2]+ reference compound and for NMR
characterization of the [Cu(I)(detp)2]+ complex
and Drs Xiaoyi Zhang and Klaus Attenkofer of the Advanced Photon Source
for the assistance in beamline operation
NR 50
TC 27
Z9 27
U1 2
U2 45
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD NOV 18
PY 2010
VL 114
IS 45
BP 14521
EP 14527
DI 10.1021/jp102278u
PG 7
WC Chemistry, Physical
SC Chemistry
GA 677US
UT WOS:000284018000049
PM 20666433
ER
PT J
AU Jung, H
Gulis, G
Gupta, S
Redding, K
Gosztola, DJ
Wiederrecht, GP
Stroscio, MA
Dutta, M
AF Jung, Hyeson
Gulis, Galina
Gupta, Subhadra
Redding, Kevin
Gosztola, David J.
Wiederrecht, Gary P.
Stroscio, Michael A.
Dutta, Mitra
TI Optical and Electrical Measurement of Energy Transfer between
Nanocrystalline Quantum Dots and Photosystem I
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID CHLAMYDOMONAS-REINHARDTII; REACTION CENTERS; RESOLUTION; TRANSPORT;
DEVICES; DONORS
AB In the natural photosynthesis process, light harvesting complexes (LHCs) absorb light and pass excitation energy to photosystem I (PSI) and photosystem II (PSI!) In this study, we have used nanocrystalline quantum dots (NQDs) as an artificial LHC by integrating them with PSI to extend their spectral range We have performed photoluminescence (PL) and ultrafast time-resolved absorption measurements to investigate this process Our PL experiments showed that emission from the NQDs is quenched and the fluorescence from PSI is enhanced Transient absorption and bleaching results can be explained by fluorescence resonance energy transfer (FRET) from the NQDs to the PSI This nonradiative energy transfer occurs in similar to 6 ps Current-voltage (I-V) measurements on the composite NQD-PSI samples demonstrate a clear photoresponse
C1 [Jung, Hyeson; Stroscio, Michael A.; Dutta, Mitra] Univ Illinois, Dept Elect Engn, Chicago, IL 60607 USA.
[Gulis, Galina; Gupta, Subhadra] Univ Alabama, Dept Met & Mat Engn, Tuscaloosa, AL 35487 USA.
[Redding, Kevin] Arizona State Univ, Dept Chem & Biochem, Tempe, AZ 85287 USA.
[Gosztola, David J.; Wiederrecht, Gary P.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Stroscio, Michael A.] Univ Illinois, Dept Bioengn, Chicago, IL 60607 USA.
[Stroscio, Michael A.; Dutta, Mitra] Univ Illinois, Dept Phys, Chicago, IL 60607 USA.
RP Dutta, M (reprint author), Univ Illinois, Dept Elect Engn, Chicago, IL 60607 USA.
RI Gosztola, David/D-9320-2011
OI Gosztola, David/0000-0003-2674-1379
FU NSF [MCB 0854851]; U S Department of Energy, Office of Science Office of
Basic Energy Sciences [DE AC02 06CH11357, DE SC0001059]
FX We thank Prof P T Snee in the Depart merit of Chemistry at the
University of Illinois at Chicago for providing the CdSe NQDs Work in KR
s laboratory was supported by a CAREER award from the NSF (MCB 0854851)
Use of the Center for Nanoscale Materials was supported by the U S
Department of Energy Office of Science Office of Basic Energy Sciences
under Contract No DE AC02 06CH11357 G P W also acknowledges support from
the Argonne Northwestern Solar Energy Research Center an Energy Frontier
Research Center funded by the US Department of Energy, Office of Science
Office of Basic Energy Sciences under Award Number DE SC0001059
NR 27
TC 4
Z9 5
U1 1
U2 18
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD NOV 18
PY 2010
VL 114
IS 45
BP 14544
EP 14549
DI 10.1021/jp102291e
PG 6
WC Chemistry, Physical
SC Chemistry
GA 677US
UT WOS:000284018000052
PM 20806934
ER
PT J
AU Mulfort, KL
Tiede, DM
AF Mulfort, Karen L.
Tiede, David M.
TI Supramolecular Cobaloxime Assemblies for H-2 Photocatalysis An Initial
Solution State Structure-Function Analysis
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID PHOTOINDUCED ELECTRON-TRANSFER; ELECTROCATALYTIC HYDROGEN EVOLUTION;
PHOTOPHYSICAL PROPERTIES; HOMOGENEOUS SYSTEM; LOW OVERPOTENTIALS; CHARGE
SEPARATION; COMPLEXES; DONOR; ACCEPTOR; ENERGY
AB In this report we have investigated the correlations between structure and light-induced electron transfer of one known and three new axially coordinated cobaloxime-based supramolecular photocatalysts for the reduction of protons to hydrogen Solution-phase X-ray scattering and ultrafast transient optical spectroscopy analyses were used in tandem to correlate the self-assembled photocatalysts structural integrity in solution with electron transfer and charge separation between the photosensitizer and catalyst fragments Biphasic excited state decay kinetics were observed for several of the assemblies, suggesting that configurational dispersion plays a role in limiting photoinduced electron transfer Notably, an assembly featuring a "push-pull" donor-photosensitizer-acceptor triad motif exhibits considerable ultrafast excited state quenching and, of the assemblies examined presents the strongest opportunity for efficient solar energy conversion These results will assist in the design and development of next-generation supramolecular photocatalyst architectures
C1 [Mulfort, Karen L.; Tiede, David M.] Argonne Natl Lab, Div Chem Sci & Engn, Argonne, IL 60439 USA.
RP Tiede, DM (reprint author), Argonne Natl Lab, Div Chem Sci & Engn, 9700 S Cass Ave, Argonne, IL 60439 USA.
FU Division of Chemical Sciences, Geosciences, and Biosciences Office of
Basic Energy Sciences of the U S Department of Energy [DE-AC02
06CH11357]; U S Department of Energy, Office of Science, Office of Basic
Energy Sciences [DE AC02 06CH11357]; Argonne National Lab
FX This work was funded by the Division of Chemical Sciences, Geosciences,
and Biosciences Office of Basic Energy Sciences of the U S Department of
Energy through Grant DE-AC02 06CH11357 Use of the Center for Nanoscale
Materials was supported by the U S Department of Energy, Office of
Science, Office of Basic Energy Sciences under Contract No DE AC02
06CH11357 We thank Dr David J Gosztola for his expert assistance with
the transient absorption facility at the Center for Nanoscale Materials
of Argonne National Laboratory Dr Jenny V Lockard for initial transient
absorption measurements and Professor Lin X Chen for insightful
discussions We also thank the staff at Sector 12 of the Advanced Photon
Source, in particular Dr Soenke Seifert and Dr Nadia Leyarovska K M
gratefully acknowledges a Director s Postdoctoral Fellowship from
Argonne National Lab
NR 69
TC 35
Z9 35
U1 3
U2 27
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD NOV 18
PY 2010
VL 114
IS 45
BP 14572
EP 14581
DI 10.1021/jp1023636
PG 10
WC Chemistry, Physical
SC Chemistry
GA 677US
UT WOS:000284018000056
PM 20593845
ER
PT J
AU Cave, RJ
Edwards, ST
Kouzelos, JA
Newton, MD
AF Cave, Robert J.
Edwards, Stephen T.
Kouzelos, J. Andrew
Newton, Marshall D.
TI Reduced Electronic Spaces for Modeling Donor/Acceptor Interactions
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID TRANSFER MATRIX-ELEMENTS; CREUTZ-TAUBE ION; TRANSITION-METAL-COMPLEXES;
GENERALIZED MULLIKEN-HUSH; CHARGE-TRANSFER COMPLEXES; AB-INITIO;
MIXED-VALENCE; MOLECULAR CALCULATIONS; BLOCK DIAGONALIZATION; COUPLING
ELEMENT
AB Diabatic states for donor (D) and acceptor (A) interactions in electron transfer (ET) processes are formulated and evaluated, along with coupling elements (H-DA) and effective D/A separation distances (r(DA)), for reduced electronic spaces of variable size, using the generalized Mulliken Hush model (GMH), applicable to an arbitrary state space and nuclear configuration, and encompassing Robin Day class III and as well as class II situations Once the electronic state space is selected (a set of n >= 2 adiabatic states approximated by an orbital space based on an effective 1-electron (1-e) Hamiltonian), the charge-localized GMH diabatic states are obtained as the eigenstates of the dipole moment operator, with rotations to yield locally adiabatic states for sites with multiple states The 1-e states and energies are expressed in terms of Kohn-Sham orbitals and orbital energies Addressing questions as to whether the estimate of H-DA "improves" as one increases n and in what sense the GMH approach "converges with n we carry out calculations for three mixed-valence binuclear Ru complexes, from which we conclude that the 2-state (2-st) model gives the most appropriate estimate of the effective coupling, similar (to within a rms deviation of <= 15%) to coupling elements obtained by superexchange correction of HDA values based on larger spaces (n = 3-6), and thus yielding a quasi-invariant value for Him over the range explored in the calculations (n = 2-6) An analysis of the coupling and associated D and A states shows that the 2 st coupling involves crucial mixing with intervening bridge states (D and A "tails"), while increasingly larger state spaces for the same system yield increasingly more localized D and A states (and weaker coupling), with H-DA tending to approach the limit of "bare" or "through space" coupling These results help to reconcile seemingly contradictory assertions in the recent literature regarding the proper role of multistate frameworks in the formulation of coupling for both intra- and intermolecular ET systems The present results are compared in detail with other reported results
C1 [Cave, Robert J.; Edwards, Stephen T.; Kouzelos, J. Andrew] Harvey Mudd Coll, Dept Chem, Claremont, CA 91711 USA.
[Newton, Marshall D.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
RP Cave, RJ (reprint author), Harvey Mudd Coll, Dept Chem, Claremont, CA 91711 USA.
FU National Science Foundation [CHE-9731634, CHE 0353199]; Donors of the
Petroleum Research Fund; Harvey Mudd College; Division of Chemical
Sciences Geosciences, and Biosciences Office of Basic Energy Sciences of
the US Department of Energy [DE-AC02 98CH10886]
FX R J C gratefully acknowledges financial support from the National
Science Foundation (CHE-9731634, CHE 0353199), the Donors of the
Petroleum Research Fund and Harvey Mudd College The Division of Chemical
Sciences Geosciences, and Biosciences Office of Basic Energy Sciences of
the US Department of Energy is gratefully acknowledged for funding the
research carried out by M D N through Grant DE-AC02 98CH10886
NR 85
TC 16
Z9 16
U1 2
U2 19
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD NOV 18
PY 2010
VL 114
IS 45
BP 14631
EP 14641
DI 10.1021/jp102353q
PG 11
WC Chemistry, Physical
SC Chemistry
GA 677US
UT WOS:000284018000063
PM 21070059
ER
PT J
AU Finkelstein-Shapiro, D
Tarakeshwar, P
Rajh, T
Mujica, V
AF Finkelstein-Shapiro, Daniel
Tarakeshwar, Pilarisetty
Rajh, Tijana
Mujica, Vladimiro
TI Photoinduced Kinetics of SERS in Bioinorganic Hybrid Systems A Case
Study Dopamine-TiO2
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID ENHANCED RAMAN-SCATTERING; TIO2 NANOPARTICLES; SILVER ELECTRODE; QUANTUM
DOTS; SURFACE; SPECTROSCOPY; SIZE; MOLECULES; FILMS; PYRIDINE
AB The reported observation of SERS on semiconductors has confirmed the feasibility of distinguishing the charge-transfer mechanism from the electromagnetic one responsible for the enhancement of the signal in metal nanoparticles Experimental investigation of the well characterized dopamine-TiO2 system revealed an unexpected dependence on coverage and size We propose here a theoretical model applicable to SERS on semiconducting substrates that explains this remarkable behavior The model is based on a competition mechanism arising from the formation of an electron gas in the conduction band of the semiconductor due to the photoexcitation of a charge-transfer complex Taking into account the two competing effects, a linear increase in the Raman intensity arising from increasing coverage and a quenching effect due to the photon absorption by the electron gas provides excellent agreement between our model and the experiment for 5 nm nanoparticles Discrepancies for the case of 2 nm nanoparticles are attributed to quantum confinement, an effect that is investigated elsewhere
C1 [Finkelstein-Shapiro, Daniel; Mujica, Vladimiro] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
[Tarakeshwar, Pilarisetty; Mujica, Vladimiro] Arizona State Univ, Dept Chem & Biochem, Tempe, AZ 85287 USA.
[Rajh, Tijana; Mujica, Vladimiro] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Finkelstein-Shapiro, D (reprint author), Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA.
RI Tarakeshwar, P./B-6609-2008;
OI Tarakeshwar, P./0000-0002-0893-0670; Finkelstein Shapiro,
Daniel/0000-0001-8015-5376
NR 34
TC 16
Z9 16
U1 6
U2 49
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD NOV 18
PY 2010
VL 114
IS 45
BP 14642
EP 14645
DI 10.1021/jp1023718
PG 4
WC Chemistry, Physical
SC Chemistry
GA 677US
UT WOS:000284018000064
PM 20687568
ER
PT J
AU Becht, GA
Lee, S
Seifert, S
Firestone, MA
AF Becht, Gregory A.
Lee, Sungwon
Seifert, Sonke
Firestone, Millicent A.
TI Solvent Tunable Optical Properties of a Polymerized Vinyl- and
Thienyl-Substituted Ionic Liquid
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID CONJUGATED POLYMERS; PHYSICAL-PROPERTIES; SOLID-STATE; POLYTHIOPHENE;
THIOPHENE; DERIVATIVES; DESIGN; OLIGOTHIOPHENES; ASSEMBLIES; COMPOSITE
AB Thermal free radical polymerization of a self-assembled, bifunctional imidazolium-based ionic liquid (IL) monomer bearing both vinyl and thienyl groups is reported FT-IR spectroscopy proves that the polymerization occurs through both the vinyl and thienyl groups The polymer is resistant to swelling in water and common organic solvents The as-synthesized polymer can be readily chemically doped and de-doped Small-angle X-ray scattering studies indicate that the dried polymer adopts a weakly ordered lamellar structure The p-doped, ethanol-solvated polymer undergoes a structural conversion to a nonlamellar phase The absorption and photoluminescence spectra can be modulated in both the neutral (thiophene) and p-doped states depending on whether the polymer is dry or ethanol-solvated The results demonstrate the possibility of incorporating solvent responsive optical characteristics in a it-conjugated polymer
C1 [Becht, Gregory A.; Lee, Sungwon; Firestone, Millicent A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Seifert, Sonke] Argonne Natl Lab, X Ray Sci Div, Argonne, IL 60439 USA.
RP Firestone, MA (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
FU Office of Basic Energy Sciences Division of Materials Sciences United
States Department of Energy [DE AC02 06CH11357]
FX This work was supported by the Office of Basic Energy Sciences Division
of Materials Sciences United States Department of Energy under Contract
No DE AC02 06CH11357 to the UChicago, LLC
NR 45
TC 10
Z9 10
U1 3
U2 14
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD NOV 18
PY 2010
VL 114
IS 45
BP 14703
EP 14711
DI 10.1021/jp102904e
PG 9
WC Chemistry, Physical
SC Chemistry
GA 677US
UT WOS:000284018000072
PM 20845948
ER
PT J
AU Prozorov, R
Tanatar, MA
Shen, B
Cheng, P
Wen, HH
Bud'ko, SL
Canfield, PC
AF Prozorov, R.
Tanatar, M. A.
Shen, Bing
Cheng, Peng
Wen, Hai-Hu
Bud'ko, S. L.
Canfield, P. C.
TI Anomalous Meissner effect in pnictide superconductors
SO PHYSICAL REVIEW B
LA English
DT Article
ID UPPER CRITICAL-FIELD; SURFACE-BARRIER; SINGLE-CRYSTALS
AB The Meissner effect has been studied in Ba(Fe0.926Co0.074)(2)As-2 and Ba0.6K0.4Fe2As2 single crystals and compared to well known, type-II superconductors LuNi2B2C and V3Si. Whereas flux penetration is mostly determined by the bulk pinning (and, perhaps, surface barrier) resulting in a large negative magnetization, the flux expulsion upon cooling in a magnetic field is very small, which could also be due to pinning and/or surface-barrier effects. However, in stark contrast with the expected behavior, the amount of the expelled flux increases almost linearly with the applied magnetic field, at least up to our maximum field of 5.5 T, which far exceeds the upper limit for the surface barrier. One interpretation of the observed behavior is that there is a field-driven suppression of magnetic pair breaking.
C1 [Prozorov, R.; Tanatar, M. A.; Bud'ko, S. L.; Canfield, P. C.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
[Prozorov, R.; Tanatar, M. A.; Bud'ko, S. L.; Canfield, P. C.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Shen, Bing; Cheng, Peng; Wen, Hai-Hu] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
RP Prozorov, R (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
EM prozorov@ameslab.gov
RI Prozorov, Ruslan/A-2487-2008; Canfield, Paul/H-2698-2014
OI Prozorov, Ruslan/0000-0002-8088-6096;
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Materials Sciences and Engineering [DE-AC02-07CH11358]; Natural Science
Foundation of China; Ministry of Science and Technology of China
[2011CB605900]; Alfred P. Sloan Foundation
FX We thank V. G. Kogan, J. R. Clem, A. Gurevich, L. Burlachkov, and E.
Phideaux for useful discussions and D. K. Christen for providing
V3Si crystal. The work at The Ames National Laboratory was
supported by the U.S. Department of Energy, Office of Basic Energy
Sciences, Division of Materials Sciences and Engineering under Contract
No. DE-AC02-07CH11358. The work in Beijing (growth of K-doped
BaFe2As2 crystals and VSM measurement) was
partially supported by the Natural Science Foundation of China, the
Ministry of Science and Technology of China (973 Project No.
2011CB605900). R. P. acknowledges support from the Alfred P. Sloan
Foundation.
NR 29
TC 14
Z9 14
U1 1
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 18
PY 2010
VL 82
IS 18
AR 180513
DI 10.1103/PhysRevB.82.180513
PG 4
WC Physics, Condensed Matter
SC Physics
GA 682JN
UT WOS:000284398200002
ER
PT J
AU Salje, EKH
Safarik, DJ
Modic, KA
Gubernatis, JE
Cooley, JC
Taylor, RD
Mihaila, B
Saxena, A
Lookman, T
Smith, JL
Fisher, RA
Pasternak, M
Opeil, CP
Siegrist, T
Littlewood, PB
Lashley, JC
AF Salje, E. K. H.
Safarik, D. J.
Modic, K. A.
Gubernatis, J. E.
Cooley, J. C.
Taylor, R. D.
Mihaila, B.
Saxena, A.
Lookman, T.
Smith, J. L.
Fisher, R. A.
Pasternak, M.
Opeil, C. P.
Siegrist, T.
Littlewood, P. B.
Lashley, J. C.
TI Tin telluride: A weakly co-elastic metal
SO PHYSICAL REVIEW B
LA English
DT Article
ID STRUCTURAL PHASE-TRANSITIONS; LOW CARRIER CONCENTRATION;
IV-VI-SEMICONDUCTORS; SOFT TO-PHONON; LOW-TEMPERATURE; HEAT-CAPACITY;
MEAN-FIELD; SNTE-MNTE; RAMAN-SCATTERING; LANDAU THEORY
AB We report resonant ultrasound spectroscopy (RUS), dilatometry/magnetostriction, magnetotransport, magnetization, specific-heat, and Sn-119 Mossbauer spectroscopy measurements on SnTe and Sn0.995Cr0.005Te. Hall measurements at T=77 K indicate that our Bridgman-grown single crystals have a p-type carrier concentration f 3.4 x 10(19) cm(-3) and that our Cr-doped crystals have an n-type concentration of 5.8 x 10(22) cm(-3). Although our SnTe crystals are diamagnetic over the temperature range 2 <= T <= 1100 K, the Cr-doped crystals are room-temperature ferromagnets with a Curie temperature of 294 K. For each sample type, three-terminal capacitive dilatometry measurements detect a subtle 0.5 mu m distortion at T-c approximate to 85 K. Whereas our RUS measurements on SnTe show elastic hardening near the structural transition, pointing to co-elastic behavior, similar measurements on Sn0.995Cr0.005Te show a pronounced softening, pointing to ferroelastic behavior. Effective Debye temperature, theta(D), values of SnTe obtained from Sn-119 Mossbauer studies show a hardening of phonons in the range 60-115 K (theta(D) = 162 K) as compared with the 100-300 K range (theta(D)=150 K). In addition, a precursor softening extending over approximately 100 K anticipates this collapse at the critical temperature and quantitative analysis over three decades of its reduced modulus finds Delta C-44/C-44=A vertical bar(T-T-0)/T-0 vertical bar(-kappa) with kappa = 0.50 +/- 0.02, a value indicating a three-dimensional softening of phonon branches at a temperature T-0 similar to 75 K, considerably below T-c. We suggest that the differences in these two types of elastic behaviors lie in the absence of elastic domain-wall motion in the one case and their nucleation in the other.
C1 [Salje, E. K. H.] Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England.
[Salje, E. K. H.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
[Fisher, R. A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Pasternak, M.] Tel Aviv Univ, IL-69978 Ramat Aviv, Israel.
[Opeil, C. P.] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA.
[Siegrist, T.] Natl High Magnet Field Lab, Tallahassee, FL 32310 USA.
[Littlewood, P. B.] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
RP Salje, EKH (reprint author), Univ Cambridge, Dept Earth Sci, Downing St, Cambridge CB2 3EQ, England.
RI Littlewood, Peter/B-7746-2008; Mihaila, Bogdan/D-8795-2013; Cooley,
Jason/E-4163-2013; Salje, Ekhard/M-2931-2013;
OI Mihaila, Bogdan/0000-0002-1489-8814; Salje, Ekhard/0000-0002-8781-6154;
Safarik, Douglas/0000-0001-8648-9377; Lookman, Turab/0000-0001-8122-5671
FU Department of Energy's Laboratory Directed Research and Development
Program
FX This work was supported in part by the Department of Energy's Laboratory
Directed Research and Development Program.
NR 58
TC 19
Z9 19
U1 3
U2 55
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 18
PY 2010
VL 82
IS 18
AR 184112
DI 10.1103/PhysRevB.82.184112
PG 9
WC Physics, Condensed Matter
SC Physics
GA 682JN
UT WOS:000284398200004
ER
PT J
AU Shamoto, S
Ishikado, M
Christianson, AD
Lumsden, MD
Wakimoto, S
Kodama, K
Iyo, A
Arai, M
AF Shamoto, Shin-ichi
Ishikado, Motoyuki
Christianson, Andrew D.
Lumsden, Mark D.
Wakimoto, Shuichi
Kodama, Katsuaki
Iyo, Akira
Arai, Masatoshi
TI Inelastic neutron scattering study of the resonance mode in the
optimally doped pnictide superconductor LaFeAsO0.92F0.08
SO PHYSICAL REVIEW B
LA English
DT Article
AB An optimally doped iron-based superconductor LaFeAsO0.92F0.08 with T-c=29 K has been studied by inelastic powder neutron scattering. The magnetic excitation at Q=1.15 angstrom(-1) is enhanced below T-c, leading to a peak at E-res similar to 13 meV as the resonance mode, in addition to the formation of a gap at low energy below the crossover energy Delta(c) similar to 10 meV. The peak energy at Q=1.15 angstrom(-1) corresponds to 5.2k(B)T(c) in good agreement with the other values of resonance mode observed in iron-based superconductors. Although the phonon density of states has a peak at the same energy as the resonance mode in the present superconductor, the Q dependence is consistent with the resonance being of predominately magnetic origin.
C1 [Shamoto, Shin-ichi; Ishikado, Motoyuki; Wakimoto, Shuichi; Kodama, Katsuaki] Japan Atom Energy Agcy, Quantum Beam Sci Directorate, Tokai, Ibaraki 3191195, Japan.
[Shamoto, Shin-ichi; Ishikado, Motoyuki; Wakimoto, Shuichi; Kodama, Katsuaki; Iyo, Akira; Arai, Masatoshi] JST, Transformat Res Project Iron Pnictides TRIP, Tokyo 1020075, Japan.
[Christianson, Andrew D.; Lumsden, Mark D.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Iyo, Akira] Natl Inst Adv Ind Sci & Technol, Nanoelect Res Inst, Tsukuba, Ibaraki 3058562, Japan.
[Arai, Masatoshi] Japan Atom Energy Agcy, J PARC Ctr, Tokai, Ibaraki 3191195, Japan.
RP Shamoto, S (reprint author), Japan Atom Energy Agcy, Quantum Beam Sci Directorate, Tokai, Ibaraki 3191195, Japan.
RI christianson, andrew/A-3277-2016; Lumsden, Mark/F-5366-2012
OI christianson, andrew/0000-0003-3369-5884; Lumsden,
Mark/0000-0002-5472-9660
FU Scientific User Facilities Division, Office of Basic Energy Sciences,
U.S. Department of Energy; JST, TRIP; [17001001]
FX We acknowledge F. Esaka, H. Eisaki, and J. A. Fernandez-Baca for their
help and fruitful discussions with K. Kakurai, M. Machida, T. Egami, and
K. Kuroki. The experiment was conducted under U.S.-Japan collaboration
program and with support of the Grant-in-Aid for Specially Promoted
Research (No. 17001001) and JST, TRIP. This work was supported by the
Scientific User Facilities Division, Office of Basic Energy Sciences,
U.S. Department of Energy.
NR 26
TC 28
Z9 28
U1 1
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 18
PY 2010
VL 82
IS 17
AR 172508
DI 10.1103/PhysRevB.82.172508
PG 4
WC Physics, Condensed Matter
SC Physics
GA 682IY
UT WOS:000284396200003
ER
PT J
AU Chiara, CJ
Stefanescu, I
Hoteling, N
Walters, WB
Janssens, RVF
Broda, R
Carpenter, MP
Fornal, B
Hecht, AA
Krolas, W
Lauritsen, T
Pawlat, T
Seweryniak, D
Wang, X
Wohr, A
Wrzesinski, J
Zhu, S
AF Chiara, C. J.
Stefanescu, I.
Hoteling, N.
Walters, W. B.
Janssens, R. V. F.
Broda, R.
Carpenter, M. P.
Fornal, B.
Hecht, A. A.
Krolas, W.
Lauritsen, T.
Pawlat, T.
Seweryniak, D.
Wang, X.
Woehr, A.
Wrzesinski, J.
Zhu, S.
TI Influence of the nu g(9/2) orbital on level structures of neutron-rich
(61,62)Mn36,37
SO PHYSICAL REVIEW C
LA English
DT Article
ID ISOTOPES; NUCLEI; DECAY; MODEL
AB Level structures in Mn-61,62(36,37) were studied with Gammasphere in the reaction of a 430-MeV Ni-64 beam and a thick U-238 target. The newly identified levels decrease in excitation energy compared to the analogous structures in the lighter Mn isotopes and behave similarly to states in the corresponding Fe isotones that involve g(9/2) neutron excitations. This behavior illustrates the importance of the inclusion of the nu g(9/2) orbital in any realistic shell-model calculations in this region.
C1 [Chiara, C. J.; Stefanescu, I.; Hoteling, N.; Walters, W. B.; Hecht, A. A.; Woehr, A.] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.
[Chiara, C. J.; Stefanescu, I.; Hoteling, N.; Janssens, R. V. F.; Carpenter, M. P.; Hecht, A. A.; Lauritsen, T.; Seweryniak, D.; Wang, X.; Woehr, A.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Broda, R.; Fornal, B.; Krolas, W.; Pawlat, T.; Wrzesinski, J.] Niewodniczanski Inst Nucl Phys PAN, PL-31342 Krakow, Poland.
[Krolas, W.] Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA.
[Wang, X.; Woehr, A.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
RP Chiara, CJ (reprint author), Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.
RI Krolas, Wojciech/N-9391-2013; Carpenter, Michael/E-4287-2015
OI Carpenter, Michael/0000-0002-3237-5734
FU US Department of Energy, Office of Nuclear Physics [DE-FG02-94-ER40834,
DE-AC02-06CH11357]; Polish Ministry of Science [1P03B05929, NN202103333]
FX This work was supported in part by the US Department of Energy, Office
of Nuclear Physics, under Grant No. DE-FG02-94-ER40834 and Contract No.
DE-AC02-06CH11357, and the Polish Ministry of Science under Contracts
No. 1P03B05929 and No. NN202103333.
NR 23
TC 18
Z9 18
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9985
EI 2469-9993
J9 PHYS REV C
JI Phys. Rev. C
PD NOV 18
PY 2010
VL 82
IS 5
AR 054313
DI 10.1103/PhysRevC.82.054313
PG 5
WC Physics, Nuclear
SC Physics
GA 713IR
UT WOS:000286731900001
ER
PT J
AU Aguilar-Arevalo, AA
Anderson, CE
Bazarko, AO
Brice, SJ
Brown, BC
Bugel, L
Cao, J
Coney, L
Conrad, JM
Cox, DC
Curioni, A
Dharmapalan, R
Djurcic, Z
Finley, DA
Fleming, BT
Ford, R
Garcia, FG
Garvey, GT
Grange, J
Green, C
Green, JA
Hart, TL
Hawker, E
Imlay, R
Johnson, RA
Karagiorgi, G
Kasper, P
Katori, T
Kobilarcik, T
Kourbanis, I
Koutsoliotas, S
Laird, EM
Linden, SK
Link, JM
Liu, Y
Liu, Y
Louis, WC
Mahn, KBM
Marsh, W
Mauger, C
McGary, VT
McGregor, G
Metcalf, W
Meyers, PD
Mills, F
Mills, GB
Monroe, J
Moore, CD
Mousseau, J
Nelson, RH
Nienaber, P
Nowak, JA
Osmanov, B
Ouedraogo, S
Patterson, RB
Pavlovic, Z
Perevalov, D
Polly, CC
Prebys, E
Raaf, JL
Ray, H
Roe, BP
Russell, AD
Sandberg, V
Schirato, R
Schmitz, D
Shaevitz, MH
Shoemaker, FC
Smith, D
Soderberg, M
Sorel, M
Spentzouris, P
Spitz, J
Stancu, I
Stefanski, RJ
Sung, M
Tanaka, HA
Tayloe, R
Tzanov, M
Van de Water, RG
Wascko, MO
White, DH
Wilking, MJ
Yang, HJ
Zeller, GP
Zimmerman, ED
AF Aguilar-Arevalo, A. A.
Anderson, C. E.
Bazarko, A. O.
Brice, S. J.
Brown, B. C.
Bugel, L.
Cao, J.
Coney, L.
Conrad, J. M.
Cox, D. C.
Curioni, A.
Dharmapalan, R.
Djurcic, Z.
Finley, D. A.
Fleming, B. T.
Ford, R.
Garcia, F. G.
Garvey, G. T.
Grange, J.
Green, C.
Green, J. A.
Hart, T. L.
Hawker, E.
Imlay, R.
Johnson, R. A.
Karagiorgi, G.
Kasper, P.
Katori, T.
Kobilarcik, T.
Kourbanis, I.
Koutsoliotas, S.
Laird, E. M.
Linden, S. K.
Link, J. M.
Liu, Y.
Liu, Y.
Louis, W. C.
Mahn, K. B. M.
Marsh, W.
Mauger, C.
McGary, V. T.
McGregor, G.
Metcalf, W.
Meyers, P. D.
Mills, F.
Mills, G. B.
Monroe, J.
Moore, C. D.
Mousseau, J.
Nelson, R. H.
Nienaber, P.
Nowak, J. A.
Osmanov, B.
Ouedraogo, S.
Patterson, R. B.
Pavlovic, Z.
Perevalov, D.
Polly, C. C.
Prebys, E.
Raaf, J. L.
Ray, H.
Roe, B. P.
Russell, A. D.
Sandberg, V.
Schirato, R.
Schmitz, D.
Shaevitz, M. H.
Shoemaker, F. C.
Smith, D.
Soderberg, M.
Sorel, M.
Spentzouris, P.
Spitz, J.
Stancu, I.
Stefanski, R. J.
Sung, M.
Tanaka, H. A.
Tayloe, R.
Tzanov, M.
Van de Water, R. G.
Wascko, M. O.
White, D. H.
Wilking, M. J.
Yang, H. J.
Zeller, G. P.
Zimmerman, E. D.
TI Measurement of the neutrino neutral-current elastic differential cross
section on mineral oil at E-nu similar to 1 GeV
SO PHYSICAL REVIEW D
LA English
DT Article
ID STRANGE FORM-FACTORS; PION ABSORPTION; SCATTERING; PROTON; SIMULATION;
DEUTERIUM; NUCLEON; PHYSICS; MU
AB We report a measurement of the flux-averaged neutral-current elastic differential cross section for neutrinos scattering on mineral oil (CH2) as a function of four-momentum transferred squared, Q(2). It is obtained by measuring the kinematics of recoiling nucleons with kinetic energy greater than 50 MeV which are readily detected in MiniBooNE. This differential cross-section distribution is fit with fixed nucleon form factors apart from an axial mass M-A that provides a best fit for M-A = 1.39 +/- 0.11 GeV. Using the data from the charged-current neutrino interaction sample, a ratio of neutral-current to charged-current quasielastic cross sections as a function of Q(2) has been measured. Additionally, single protons with kinetic energies above 350 MeV can be distinguished from neutrons and multiple nucleon events. Using this marker, the strange quark contribution to the neutral-current axial vector form factor at Q(2) - 0, Delta s, is found to be Delta s = 0.08 +/- 0.26.
C1 [Dharmapalan, R.; Liu, Y.; Stancu, I.] Univ Alabama, Tuscaloosa, AL 35487 USA.
[Djurcic, Z.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Koutsoliotas, S.] Bucknell Univ, Lewisburg, PA 17837 USA.
[Hawker, E.; Johnson, R. A.; Raaf, J. L.] Univ Cincinnati, Cincinnati, OH 45221 USA.
[Coney, L.; Hart, T. L.; Nelson, R. H.; Tzanov, M.; Wilking, M. J.; Zimmerman, E. D.] Univ Colorado, Boulder, CO 80309 USA.
[Mahn, K. B. M.; Monroe, J.; Shaevitz, M. H.; Sorel, M.] Columbia Univ, New York, NY 10027 USA.
[Smith, D.] Embry Riddle Aeronaut Univ, Prescott, AZ 86301 USA.
[Brice, S. J.; Brown, B. C.; Finley, D. A.; Ford, R.; Garcia, F. G.; Green, C.; Kasper, P.; Kobilarcik, T.; Kourbanis, I.; Marsh, W.; Mills, F.; Moore, C. D.; Polly, C. C.; Prebys, E.; Russell, A. D.; Schmitz, D.; Spentzouris, P.; Stefanski, R. J.; Zeller, G. P.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Grange, J.; Mousseau, J.; Osmanov, B.; Ray, H.] Univ Florida, Gainesville, FL 32611 USA.
[Cox, D. C.; Green, J. A.; Katori, T.; Tayloe, R.] Indiana Univ, Bloomington, IN 47405 USA.
[Garvey, G. T.; Green, C.; Green, J. A.; Hawker, E.; Louis, W. C.; Mauger, C.; McGregor, G.; Mills, G. B.; Pavlovic, Z.; Sandberg, V.; Schirato, R.; Van de Water, R. G.; White, D. H.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Bugel, L.; Imlay, R.; Metcalf, W.; Nowak, J. A.; Ouedraogo, S.; Sung, M.; Wascko, M. O.] Louisiana State Univ, Baton Rouge, LA 70803 USA.
[Conrad, J. M.; Karagiorgi, G.; Katori, T.; McGary, V. T.] MIT, Cambridge, MA 02139 USA.
[Aguilar-Arevalo, A. A.; Cao, J.] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City 04510, DF, Mexico.
[Liu, Y.; Roe, B. P.; Yang, H. J.] Univ Michigan, Ann Arbor, MI 48109 USA.
[Bazarko, A. O.; Laird, E. M.; Meyers, P. D.; Patterson, R. B.; Shoemaker, F. C.; Tanaka, H. A.] Princeton Univ, Princeton, NJ 08544 USA.
[Nienaber, P.] St Marys Univ Minnesota, Winona, MN 55987 USA.
[Link, J. M.; Perevalov, D.] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA.
[Anderson, C. E.; Curioni, A.; Fleming, B. T.; Linden, S. K.; Soderberg, M.; Spitz, J.] Yale Univ, New Haven, CT 06520 USA.
RP Aguilar-Arevalo, AA (reprint author), Univ Alabama, Tuscaloosa, AL 35487 USA.
RI Cao, Jun/G-8701-2012; Link, Jonathan/L-2560-2013; Nowak,
Jaroslaw/P-2502-2016; Yang, Haijun/O-1055-2015;
OI Cao, Jun/0000-0002-3586-2319; Link, Jonathan/0000-0002-1514-0650; Nowak,
Jaroslaw/0000-0001-8637-5433; Aguilar-Arevalo, Alexis
A./0000-0001-9279-3375
NR 53
TC 232
Z9 232
U1 2
U2 11
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 18
PY 2010
VL 82
IS 9
AR 092005
DI 10.1103/PhysRevD.82.092005
PG 16
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 682KI
UT WOS:000284402000003
ER
PT J
AU Kolossvary, I
Bowers, KJ
AF Kolossvary, Istvan
Bowers, Kevin J.
TI Global optimization of additive potential energy functions: Predicting
binary Lennard-Jones clusters
SO PHYSICAL REVIEW E
LA English
DT Article
ID THERMODYNAMICS
AB We present a method for minimizing additive potential-energy functions. Our hidden-force algorithm can be described as an intricate multiplayer tug-of-war game in which teams try to break an impasse by randomly assigning some players to drop their ropes while the others are still tugging until a partial impasse is reached, then, instructing the dropouts to resume tugging, for all teams to come to a new overall impasse. Utilizing our algorithm in a non-Markovian parallel Monte Carlo search, we found 17 new putative global minima for binary Lennard-Jones clusters in the size range of 90-100 particles. The method is efficient enough that an unbiased search was possible; no potential-energy surface symmetries were exploited. All new minima are comprised of three nested polyicosahedral or polytetrahedral shells when viewed as a nested set of Connolly surfaces (though the shell structure has previously gone unscrutinized, known minima are often qualitatively similar). Unlike known minima, in which the outer and inner shells are comprised of the larger and smaller atoms, respectively, in 13 of the new minima, the atoms are not as clearly separated by size. Furthermore, while some known minima have inner shells stabilized by larger atoms, four of the new minima have outer shells stabilized by smaller atoms.
C1 [Kolossvary, Istvan] Budapest Univ Technol & Econ, Dept Chem, H-1111 Budapest, Hungary.
[Kolossvary, Istvan] BIOKOL Res LLC, Madison, NJ 07940 USA.
[Bowers, Kevin J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Kolossvary, I (reprint author), DE Shaw Res LLC, New York, NY 10036 USA.
EM istvan@kolossvary.hu
NR 15
TC 7
Z9 7
U1 1
U2 5
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
J9 PHYS REV E
JI Phys. Rev. E
PD NOV 18
PY 2010
VL 82
IS 5
AR 056711
DI 10.1103/PhysRevE.82.056711
PN 2
PG 6
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 682LT
UT WOS:000284405800005
PM 21230623
ER
PT J
AU Yoon, M
Tomanek, D
AF Yoon, Mina
Tomanek, David
TI Equilibrium structure of ferrofluid aggregates
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID PHASE-DIAGRAMS; FLUIDS; SIMULATION
AB We study the equilibrium structure of large but finite aggregates of magnetic dipoles, representing a colloidal suspension of magnetite particles in a ferrofluid. With increasing system size, the structural motif evolves from chains and rings to multi-chain and multi-ring assemblies. Very large systems form single-and multi-wall coils, tubes and scrolls. These structural changes result from a competition between various energy terms, which can be approximated analytically within a continuum model. We also study the effect of external parameters such as magnetic field on the relative stability of these structures. Our results may give insight into experimental data obtained during solidification of ferrofluid aggregates at temperatures where thermal fluctuations become negligible in comparison to inter-particle interactions. These data may also help to experimentally control the aggregation of magnetic particles.
C1 [Yoon, Mina] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
[Yoon, Mina] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany.
[Tomanek, David] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.
RP Yoon, M (reprint author), Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RI Tomanek, David/B-3275-2009; Yoon, Mina/A-1965-2016
OI Tomanek, David/0000-0003-1131-4788; Yoon, Mina/0000-0002-1317-3301
FU National Science Foundation [EEC-0832785]; Materials Science and
Engineering Division, Office of Basic Energy Sciences, US Department of
Energy [ERKCS81]; Max Planck Society, Germany
FX This work has been funded by the National Science Foundation Cooperative
Agreement # EEC-0832785, titled 'NSEC: Center for High-rate
Nanomanufacturing'. Computational resources have been provided by the
Michigan State University High Performance Computing Center. MY is
sponsored by the Materials Science and Engineering Division, Office of
Basic Energy Sciences, US Department of Energy (Grant No. ERKCS81) and
the Max Planck Society, Germany. We acknowledge useful discussions with
Savas Berber and the research group of Weili Luo.
NR 16
TC 13
Z9 13
U1 0
U2 17
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD NOV 17
PY 2010
VL 22
IS 45
AR 455105
DI 10.1088/0953-8984/22/45/455105
PG 6
WC Physics, Condensed Matter
SC Physics
GA 673HZ
UT WOS:000283651400041
PM 21339625
ER
PT J
AU Zilman, A
Bel, G
AF Zilman, A.
Bel, G.
TI Crowding effects in non-equilibrium transport through nano-channels
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID FACILITATED MEMBRANE-TRANSPORT; NUCLEAR-PORE COMPLEX; SELECTIVE
TRANSPORT; SINGLE-MOLECULE; OPEN BOUNDARIES; PROTEIN IMPORT;
TRANSLOCATION; PERMEATION; DIFFUSION; BETA
AB Transport through nano-channels plays an important role in many biological processes and industrial applications. Gaining insights into the functioning of biological transport processes and the design of man-made nano-devices requires an understanding of the basic physics of such transport. A simple exclusion process has proven to be very useful in explaining the properties of several artificial and biological nano-channels. It is particularly useful for modeling the influence of inter-particle interactions on transport characteristics. In this paper, we explore several models of the exclusion process using a mean field approach and computer simulations. We examine the effects of crowding inside the channel and in its immediate vicinity on the mean flux and the transport times of single molecules. Finally, we discuss the robustness of the theory's predictions with respect to the crucial characteristics of the hindered diffusion in nano-channels that need to be included in the model.
C1 [Zilman, A.] Los Alamos Natl Lab, Theoret Biol & Biophys Grp, Los Alamos, NM 87545 USA.
[Zilman, A.; Bel, G.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Div Theoret, Los Alamos, NM 87545 USA.
[Bel, G.] Los Alamos Natl Lab, Comp Computat & Stat Sci Div, Los Alamos, NM 87545 USA.
RP Zilman, A (reprint author), Los Alamos Natl Lab, Theoret Biol & Biophys Grp, POB 1663, Los Alamos, NM 87545 USA.
RI BEL, GOLAN/F-1573-2012; Bel, Golan/C-6528-2008
OI BEL, GOLAN/0000-0002-3307-9478; Bel, Golan/0000-0002-3307-9478
FU US Department of Energy [DE-AC52-06NA25396]
FX This work was performed under the auspices of the US Department of
Energy under contract DE-AC52-06NA25396.
NR 58
TC 8
Z9 8
U1 1
U2 11
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD NOV 17
PY 2010
VL 22
IS 45
AR 454130
DI 10.1088/0953-8984/22/45/454130
PG 11
WC Physics, Condensed Matter
SC Physics
GA 673HZ
UT WOS:000283651400032
PM 21339616
ER
PT J
AU Snezhko, A
Barlan, K
Aranson, IS
Gelfand, VI
AF Snezhko, Alexey
Barlan, Kari
Aranson, Igor S.
Gelfand, Vladimir I.
TI Statistics of Active Transport in Xenopus Melanophores Cells
SO BIOPHYSICAL JOURNAL
LA English
DT Article
ID MOLECULAR MOTORS; ORGANELLE TRANSPORT; FILAMENTS
AB The transport of cell cargo, such as organelles and protein complexes in the cytoplasm, is determined by cooperative action of molecular motors stepping along polar cytoskeletal elements. Analysis of transport of individual organelles generated useful information about the properties of the motor proteins and underlying cytoskeletal elements. In this work, for the first time (to our knowledge), we study collective movement of multiple organelles using Xenopus melanophores, pigment cells that translocate several thousand of pigment granules (melanosomes), spherical organelles of a diameter of similar to 1 mu m. These cells disperse melanosomes in the cytoplasm in response to high cytoplasmic cAMP, while at low cAMP melanosomes cluster at the cell center. Obtained results suggest spatial and temporal organization, characterized by strong correlations between movement of neighboring organelles, with correlation length of similar to 4 mu m and pair lifetime similar to 5 s. Furthermore, velocity statistics revealed strongly non-Gaussian velocity distribution with high velocity tails demonstrating exponential behavior suggestive of strong velocity correlations. Depolymerization of vimentin intermediate filaments using a dominant-negative vimentin mutant or actin with cytochalasin B reduced correlation of behavior of individual particles. Based on our analysis, we concluded that steric repulsion is dominant, but both intermediate filaments and actin microfilaments are involved in dynamic cross-linking organelles in the cytoplasm.
C1 [Snezhko, Alexey; Aranson, Igor S.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Barlan, Kari; Gelfand, Vladimir I.] Northwestern Univ, Feinberg Sch Med, Dept Cell & Mol Biol, Chicago, IL 60611 USA.
[Aranson, Igor S.] Northwestern Univ, Dept Engn Sci & Appl Math, Evanston, IL 60208 USA.
RP Snezhko, A (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM snezhko@anl.gov
RI Aranson, Igor/I-4060-2013
OI Gelfand, Vladimir/0000-0002-6361-2798;
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Materials Science and Engineering [DE AC02-06CH11357]; National
Institutes of Health [GM-52111]
FX A.S. and I.S.A. were supported by the U.S. Department of Energy, Office
of Basic Energy Sciences, Division of Materials Science and Engineering
(contract No. DE AC02-06CH11357). K.B. and V.I.G. were supported by the
National Institutes of Health (grant No. GM-52111).
NR 18
TC 6
Z9 6
U1 0
U2 4
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0006-3495
J9 BIOPHYS J
JI Biophys. J.
PD NOV 17
PY 2010
VL 99
IS 10
BP 3216
EP 3223
DI 10.1016/j.bpj.2010.09.065
PG 8
WC Biophysics
SC Biophysics
GA 682YK
UT WOS:000284438700015
PM 21081069
ER
PT J
AU Varma, S
Rempe, SB
AF Varma, Sameer
Rempe, Susan B.
TI Multibody Effects in Ion Binding and Selectivity
SO BIOPHYSICAL JOURNAL
LA English
DT Article
ID KCSA POTASSIUM CHANNEL; FREE-ENERGY; MOLECULAR SIMULATION; WATER
CLUSTERS; FORCE-FIELD; AB-INITIO; POLARIZATION; SOLVATION; HYDRATION; K+
AB Selective binding of ions to biomolecules plays a vital role in numerous biological processes. To understand the specific role of induced effects in selective ion binding, we use quantum chemical and pairwise-additive force-field simulations to study Na(+) and K(+) binding to various small molecules representative of ion binding functional groups in biomolecules. These studies indicate that electronic polarization significantly contributes to both absolute and relative ion-binding affinities. Furthermore, this contribution depends on both the number and the specific chemistries of the coordinating molecules, thus highlighting the complexity of ion-ligand interactions. Specifically, multibody interactions reduce as well as enhance the dipole moments of the ion-coordinating molecules, thereby affecting observables like coordination number distributions of ions. The differential polarization induced in molecules coordinating these two equivalently charged, but different-sized, ions also depends upon the number of coordinating molecules, showing the importance of multibody effects in distinguishing these ions thermodynamically. Because even small differences in ionic radii (0.4 angstrom for Na(+) and K(+)) produce differential polarization trends critical to distinguishing ions thermodynamically, it is likely that polarization plays an important role in thermodynamically distinguishing other ions and charged chemical and biological functional groups.
C1 [Varma, Sameer; Rempe, Susan B.] Sandia Natl Labs, Biol & Mat Sci Ctr, Albuquerque, NM 87185 USA.
RP Varma, S (reprint author), IIT, Biol Chem & Phys Sci Div, Chicago, IL 60616 USA.
EM svarma@iit.edu; slrempe@sandia.gov
RI Rempe, Susan/H-1979-2011
FU National Institutes of Health, Bethesda, MD; Sandia's Laboratory; U.S.
Department of Energy, National Nuclear Security Administration
[DE-AC04-94AL8500]
FX This work was supported in part by the National Institutes of Health,
Bethesda, MD, through its Road Map for Medical Research and in part by
Sandia's Laboratory Directed Research and Development program. Sandia is
a multiprogram laboratory operated by Sandia Corporation, a Lockheed
Martin Company, for the U.S. Department of Energy, National Nuclear
Security Administration, under contract No. DE-AC04-94AL8500.
NR 46
TC 22
Z9 22
U1 0
U2 16
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0006-3495
J9 BIOPHYS J
JI Biophys. J.
PD NOV 17
PY 2010
VL 99
IS 10
BP 3394
EP 3401
DI 10.1016/j.bpj.2010.09.019
PG 8
WC Biophysics
SC Biophysics
GA 682YK
UT WOS:000284438700034
PM 21081088
ER
PT J
AU Veser, G
AF Veser, Gotz
TI Multiscale process intensification for catalytic partial oxidation of
methane From nanostructured catalysts to integrated reactor concepts
SO CATALYSIS TODAY
LA English
DT Article; Proceedings Paper
CT 6th World Congress on Oxidation Catalysis (6WCOC)
CY JUL 05-10, 2009
CL Lille, FRANCE
DE Process intensification; Catalytic partial oxidation; Methane; Syngas;
Integrated reactors; Nanocatalysts
ID CHEMICAL-LOOPING COMBUSTION; REVERSE-FLOW REACTOR; TEMPERATURE PARTIAL
OXIDATION; SYNTHESIS GAS; MULTIFUNCTIONAL REACTORS; HETEROGENEOUS
CATALYSIS; OPERATION; DESIGN; SCALE; BED
AB Process intensification (PI) is an exciting area of chemical and process engineering with increasing Importance in the design and development of cleaner more efficient and more sustainable processes The present contribution reviews work from the author s laboratory on catalytic partial oxidation of methane (CPOM) as example for a multiscale approach to process intensification It is shown that regenerative heat-integration via flow reversal is an efficient way to overcome thermodynamic limitations present at autothermal reactor operation and that nano-engineered catalysts can complement and enable these reactor concepts by combining high activity with exceptional catalyst stability Most significantly the combination of heat-integration with nanostructured catalysts yields synergies which are characteristic for multiscale process intensification resulting in the present case in strongly increased syngas yields of 80% in a simple air-fed autothermal CPOM process (C) 2010 Elsevier B V All rights reserved
C1 [Veser, Gotz] Univ Pittsburgh, Dept Chem Engn, Swanson Sch Engn, Pittsburgh, PA 15260 USA.
[Veser, Gotz] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
RP Veser, G (reprint author), Univ Pittsburgh, Dept Chem Engn, Swanson Sch Engn, 1249 Benedum Hall, Pittsburgh, PA 15260 USA.
RI Veser, Goetz/I-5727-2013
NR 69
TC 9
Z9 10
U1 2
U2 16
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5861
EI 1873-4308
J9 CATAL TODAY
JI Catal. Today
PD NOV 17
PY 2010
VL 157
IS 1-4
BP 24
EP 32
DI 10.1016/j.cattod.2010.04.040
PG 9
WC Chemistry, Applied; Chemistry, Physical; Engineering, Chemical
SC Chemistry; Engineering
GA 683UM
UT WOS:000284502000005
ER
PT J
AU Gardner, TH
Spivey, JJ
Campos, A
Hissam, JC
Kugler, EL
Roy, AD
AF Gardner, Todd H.
Spivey, James J.
Campos, Andrew
Hissam, Jason C.
Kugler, Edwin L.
Roy, Amitava D.
TI Catalytic partial oxidation of CH4 over Ni-substituted barium
hexaaluminate catalysts
SO CATALYSIS TODAY
LA English
DT Article; Proceedings Paper
CT 6th World Congress on Oxidation Catalysis (6WCOC)
CY JUL 05-10, 2009
CL Lille, FRANCE
DE Hexaaluminate; Partial oxidation; Nickel; Methane
ID SYNTHESIS GAS; METHANE; COMBUSTION; CATION
AB Ba0 75NiyAl12-yO19-delta (y = 0 2 0 4 0 6 0 8 and 1 0) catalysts were tested for the partial oxidation of CH4 at temperatures between 200 and 900 degrees C Temperature programmed reaction results indicate that light-off for the partial oxidation reaction occurred between 665 and 687 degrees C for all catalysts Isothermal runs performed at 900 C on the catalysts showed stable reaction product concentrations consistent with equilibrium Post-reaction analysts of the used catalysts showed that there are two distinct zones in the catalyst bed In a short leading edge of the bed the apparently complete consumption of oxygen leads to a catalyst which XANES analysis shows is primarily NI-substituted into the hexaaluminate phase In the downstream portion of the bed Ni is shown to be present as metallic Ni This corresponds to a reaction sequence in which the oxidation of CH4 proceeds at the Inlet until all oxygen is reacted followed by the reaction of CO2 and H2O with unreacted CH4 and its derivatives to produce the final syngas mixture From the change in the unit-cell dimensions with Ni substitution there is a clear indication that Ni2+ which has a larger ionic radius than aluminum substitutes for Al3+ in the hexaaluminate lattice in the synthesis process and there is no restructuring of the bulk hexaaluminate phase after the Ni is removed from the lattice Published by Elsevier B V
C1 [Gardner, Todd H.] US DOE, Natl Energy Technol Lab, Morgantown, WV 26505 USA.
[Spivey, James J.; Campos, Andrew] Louisiana State Univ, Cain Dept Chem Engn, Baton Rouge, LA 70803 USA.
[Hissam, Jason C.; Kugler, Edwin L.] W Virginia Univ, Dept Chem Engn, Morgantown, WV 26506 USA.
[Roy, Amitava D.] Louisiana State Univ, J Bennett Johnson Sr Ctr Adv Microstruct & Device, Baton Rouge, LA 70806 USA.
RP Gardner, TH (reprint author), US DOE, Natl Energy Technol Lab, 3610 Collins Ferry Rd,POB 880, Morgantown, WV 26505 USA.
NR 20
TC 11
Z9 11
U1 2
U2 17
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5861
J9 CATAL TODAY
JI Catal. Today
PD NOV 17
PY 2010
VL 157
IS 1-4
BP 166
EP 169
DI 10.1016/j.cattod.2010.05.033
PG 4
WC Chemistry, Applied; Chemistry, Physical; Engineering, Chemical
SC Chemistry; Engineering
GA 683UM
UT WOS:000284502000029
ER
PT J
AU Zwolak, M
Wilson, J
Di Ventra, M
AF Zwolak, Michael
Wilson, James
Di Ventra, Massimiliano
TI Dehydration and ionic conductance quantization in nanopores
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID TRANSVERSE ELECTRONIC TRANSPORT; SOLID-STATE NANOPORES;
SINGLE-STRANDED-DNA; ELECTROSTATIC PROBLEMS; TOPOLOGICAL CONTROL;
POTASSIUM CHANNEL; CARBON NANOTUBES; ENERGY BARRIERS; MOLECULAR-BASIS;
MASS-TRANSPORT
AB There has been tremendous experimental progress in the last decade in identifying the structure and function of biological pores (ion channels) and fabricating synthetic pores. Despite this progress, many questions still remain about the mechanisms and universal features of ionic transport in these systems. In this paper, we examine the use of nanopores to probe ion transport and to construct functional nanoscale devices. Specifically, we focus on the newly predicted phenomenon of quantized ionic conductance in nanopores as a function of the effective pore radius-a prediction that yields a particularly transparent way to probe the contribution of dehydration to ionic transport. We study the role of ionic species in the formation of hydration layers inside and outside of pores. We find that the ion type plays only a minor role in the radial positions of the predicted steps in the ion conductance. However, ions with higher valency form stronger hydration shells, and thus, provide even more pronounced, and therefore, more easily detected, drops in the ionic current. Measuring this phenomenon directly, or from the resulting noise, with synthetic nanopores would provide evidence of the deviation from macroscopic (continuum) dielectric behavior due to microscopic features at the nanoscale and may shed light on the behavior of ions in more complex biological channels.
C1 [Zwolak, Michael] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Wilson, James; Di Ventra, Massimiliano] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
RP Zwolak, M (reprint author), Los Alamos Natl Lab, Div Theoret, MS B213, Los Alamos, NM 87545 USA.
RI Di Ventra, Massimiliano/E-1667-2011; Zwolak, Michael/G-2932-2013
OI Di Ventra, Massimiliano/0000-0001-9416-189X; Zwolak,
Michael/0000-0001-6443-7816
FU US Department of Energy; NIH-NHGRI
FX This research is supported by the US Department of Energy through the
LANL/LDRD Program (MZ) and by the NIH-NHGRI (JW and MD).
NR 70
TC 9
Z9 9
U1 1
U2 14
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
EI 1361-648X
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD NOV 17
PY 2010
VL 22
IS 45
AR 454126
DI 10.1088/0953-8984/22/45/454126
PG 12
WC Physics, Condensed Matter
SC Physics
GA 673HZ
UT WOS:000283651400028
PM 21152075
ER
PT J
AU Poineau, F
Johnstone, EV
Weck, PF
Kim, E
Forster, PM
Scott, BL
Sattelberger, AP
Czerwinski, KR
AF Poineau, Frederic
Johnstone, Erik V.
Weck, Philippe F.
Kim, Eunja
Forster, Paul M.
Scott, Brian L.
Sattelberger, Alfred P.
Czerwinski, Kenneth R.
TI Synthesis and Structure of Technetium Trichloride
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID UNTERSUCHUNGEN; TRIHALIDES; CLUSTERS; CHLORIDE; RHENIUM
AB Technetium trichloride has been synthesized by reaction of Tc-2(O2CCH3)(4)Cl-2 with HCl(g) at 300 degrees C. The mechanism of formation mimics the one described earlier in the literature for rhenium. Tc-2(O2CCH3)(2)Cl-4 [P (1) over bar; a = 6.0303(12) angstrom, b = 6.5098(13) angstrom, c = 8.3072(16) angstrom, alpha = 112.082(2)degrees, beta = 96.667(3)degrees, gamma = 108.792(3)degrees; Tc-Tc = 2.150(1) angstrom] is formed as an intermediate in the reaction at 100 C. Technetium trichloride is formed above 250 degrees C and is isostructural with its rhenium homologue. The structure consists of Tc3Cl9 clusters [R (3) over barm; a = b = 10.1035(19) angstrom, c = 20.120(8) angstrom] and the Tc-Tc separation is 2.444(1) angstrom. Calculations on TcX3 (X = Cl, Br) have confirmed the stability of TcCl3 and suggest the existence of a polymorph of TcBr3 with the ReBr3 structure.
C1 [Poineau, Frederic; Johnstone, Erik V.; Weck, Philippe F.; Forster, Paul M.; Sattelberger, Alfred P.; Czerwinski, Kenneth R.] Univ Nevada, Dept Chem, Las Vegas, NV 89154 USA.
[Kim, Eunja] Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA.
[Scott, Brian L.] Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA.
[Sattelberger, Alfred P.] Argonne Natl Lab, Energy Engn & Syst Anal Directorate, Argonne, IL 60439 USA.
RP Poineau, F (reprint author), Univ Nevada, Dept Chem, Las Vegas, NV 89154 USA.
EM poineauf@unlv.nevada.edu
RI Scott, Brian/D-8995-2017;
OI Scott, Brian/0000-0003-0468-5396; , Philippe/0000-0002-7610-2893;
Forster, Paul/0000-0003-3319-4238
FU U.S. Department of Energy [DE-AC07-05ID14517]; U.S. Department of
Energy, Office of Science, Office of Basic Energy Sciences
[DE-AC02-06CH11357]
FX The authors thank Mr. Tom O'Dou for outstanding health physics support
and Dr. Gordon Jarvinen (Los Alamos) for a generous loan of
NH4TcO4. Funding for this research was provided by
a subcontract through Battelle 0089445 from the U.S. Department of
Energy (Agreement DE-AC07-05ID14517). Use of the Advanced Photon Source
was supported by the U.S. Department of Energy, Office of Science,
Office of Basic Energy Sciences, under Contract DE-AC02-06CH11357.
NR 22
TC 24
Z9 24
U1 0
U2 11
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD NOV 17
PY 2010
VL 132
IS 45
BP 15864
EP 15865
DI 10.1021/ja105730e
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 680AK
UT WOS:000284202200010
PM 20977207
ER
PT J
AU Huang, J
Kovalenko, MV
Talapin, DV
AF Huang, Jing
Kovalenko, Maksym V.
Talapin, Dmitri V.
TI Alkyl Chains of Surface Ligands Affect Polytypism of CdSe Nanocrystals
and Play an Important Role in the Synthesis of Anisotropic
Nanoheterostructures
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID SELF-ASSEMBLED MONOLAYERS; SEEDED-GROWTH; QUANTUM DOTS; NANOPARTICLES;
NANORODS; SHAPE; SEMICONDUCTORS; MONODISPERSE; NANOWIRES; BINDING
AB We show that the length of the alkyl chain of surface ligands can shift the equilibrium between the wurtzite and zinc blende polytypes of CdSe nanocrystals. In-situ wide-angle X-ray scattering measurements reveal that short-chain (e.g., propyl) phosphonic acids stabilize CdSe nanocrystals with the zinc blende phase whereas octadecylphosphonic acid stabilize nanocrystals with the wurtzite phase. We also demonstrate how this effect can be used to improve the shape selectivity in the synthesis of anisotropic CdSe/CdS and ZnSe/CdS nanoheterostructures.
C1 [Huang, Jing; Kovalenko, Maksym V.; Talapin, Dmitri V.] Univ Chicago, Dept Chem, Chicago, IL 60637 USA.
[Talapin, Dmitri V.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Talapin, DV (reprint author), Univ Chicago, Dept Chem, 5735 S Ellis Ave, Chicago, IL 60637 USA.
EM dvtalapin@uchicago.edu
RI Kovalenko, Maksym/B-6844-2008
OI Kovalenko, Maksym/0000-0002-6396-8938
FU NSF [DMR-0847535]; Chicago Energy Initiative; U.S. Department of Energy
[DE-AC02-06CH11357]
FX We thank D. Baranov, T. Witten, and S. Sibener for stimulating
discussions. The work was supported by NSF CAREER Award DMR-0847535 and
the Chicago Energy Initiative. The work at the Center for Nanoscale
Materials at Argonne National Laboratory was supported by the U.S.
Department of Energy under Contract DE-AC02-06CH11357.
NR 33
TC 60
Z9 60
U1 7
U2 70
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD NOV 17
PY 2010
VL 132
IS 45
BP 15866
EP 15868
DI 10.1021/ja105132u
PG 3
WC Chemistry, Multidisciplinary
SC Chemistry
GA 680AK
UT WOS:000284202200011
PM 20964404
ER
PT J
AU Laskin, J
Yang, ZB
Song, T
Lam, C
Chu, IK
AF Laskin, Julia
Yang, Zhibo
Song, Tao
Lam, Corey
Chu, Ivan K.
TI Effect of the Basic Residue on the Energetics, Dynamics, and Mechanisms
of Gas-Phase Fragmentation of Protonated Peptides
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID SURFACE-INDUCED DISSOCIATION; COLLISION-INDUCED DISSOCIATION; TANDEM
MASS-SPECTROMETRY; AMINO-ACID-RESIDUES; FT-ICR MS; ORGANIC-MOLECULES;
ION CHEMISTRY; ASPARTIC-ACID; AB-INITIO; B IONS
AB The effect of the basic residue on the energetics, dynamics, and mechanisms of backbone fragmentation of protonated peptides was investigated. Time-resolved and collision energy-resolved surface-induced dissociation (SID) of singly protonated peptides with the N-terminal arginine residue and their analogues, in which arginine is replaced with less basic lysine and histidine residues, was examined using a specially configured Fourier transform ion cyclotron resonance mass spectrometer (FTICR-MS). SID experiments demonstrated different kinetics of formation of several primary product ions of peptides with and without arginine residue. The energetics and dynamics of these pathways were determined from Rice-Ramsperger-Kassel-Marcus (RRKM) modeling of the experimental data. Comparison between the kinetics and energetics of fragmentation of arginine-containing peptides and the corresponding methyl ester derivatives provides important information on the effect of dissociation pathways involving salt bridge (SB) intermediates on the observed fragmentation behavior. Because pathways involving SB intermediates are characterized by low threshold energies, they efficiently compete with classical oxazolone and imine/enol pathways of arginine-containing peptides on a long time scale of the FTICR instrument. In contrast, fragmentation of histidine- and lysine-containing peptides is largely determined by canonical pathways. Because SB pathways are characterized by negative activation entropies, fragmentation of arginine-containing peptides is kinetically hindered and observed at higher collision energies as compared to their lysine- and histidine-containing analogues.
C1 [Laskin, Julia; Yang, Zhibo] Pacific NW Natl Lab, Fundamental Sci Div, Richland, WA 99352 USA.
[Song, Tao; Lam, Corey; Chu, Ivan K.] Univ Hong Kong, Dept Chem, Hong Kong, Hong Kong, Peoples R China.
RP Laskin, J (reprint author), Pacific NW Natl Lab, Fundamental Sci Div, Richland, WA 99352 USA.
EM julia.laskin@pnl.gov
RI Song, Tao/D-8800-2012; Laskin, Julia/H-9974-2012
OI Laskin, Julia/0000-0002-4533-9644
FU Division of Chemical Sciences, Geosciences, and Biosciences, Office of
Basic Energy Sciences of the U.S. Department of Energy (DOE); University
of Hong Kong and Hong Kong Research Grant Council, Special
Administrative Region, China [7012/08P]; DOE's Office of Biological and
Environmental Research; DOE [DE-AC05-76RL01830]
FX This study was partially supported by the grant from the Division of
Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy
Sciences of the U.S. Department of Energy (DOE), and the University of
Hong Kong and Hong Kong Research Grant Council, Special Administrative
Region, China (Project No. 7012/08P). The research described in this
article was performed at the DOE's W.R. Wiley Environmental Molecular
Sciences Laboratory (EMSL), a national scientific user facility
sponsored by the DOE's Office of Biological and Environmental Research
and located at Pacific Northwest National Laboratory (PNNL). PNNL is
operated by Battelle for the DOE under Contract DE-AC05-76RL01830.
NR 69
TC 18
Z9 18
U1 1
U2 23
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD NOV 17
PY 2010
VL 132
IS 45
BP 16006
EP 16016
DI 10.1021/ja104438z
PG 11
WC Chemistry, Multidisciplinary
SC Chemistry
GA 680AK
UT WOS:000284202200043
PM 20977217
ER
PT J
AU Murnen, HK
Rosales, AM
Jaworsk, JN
Segalman, RA
Zuckermann, RN
AF Murnen, Hannah K.
Rosales, Adrianne M.
Jaworsk, Jonathan N.
Segalman, Rachel A.
Zuckermann, Ronald N.
TI Hierarchical Self-Assembly of a Biomimetic Diblock Copolypeptoid into
Homochiral Superhelices
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID SYNCHROTRON X-RAY; BLOCK-COPOLYMERS; AMYLOID FIBRILS; ACHIRAL MOLECULES;
PROTEIN NANOTUBES; BETA-SHEETS; PEPTIDE; CHIRALITY; ORIGIN; HELIX
AB The aqueous self-assembly of a sequence-specific bioinspired peptoid diblock copolymer into monodisperse superhelices is demonstrated to be the result of a hierarchical process, strongly dependent on the charging level of the molecule. The partially charged amphiphilic diblock copolypeptoid 30-mer, [N-(2-phenethyl)glycine](15)-[N-(2-carboxyethyl)glycine](15), forms superhelices in high yields, with diameters of 624 +/- 69 nm and lengths ranging from 2 to 20 mu m. Chemical analogs coupled with X-ray scattering and crystallography of a model compound have been used to develop a hierarchical model of self-assembly. Lamellar stacks roll up to form a supramolecular double helical structure with the internal ordering of the stacks being mediated by crystalline aromatic side chain-side chain interactions within the hydrophobic block. The role of electrostatic and hydrogen bonding interactions in the hydrophilic block is also investigated and found to be important in the self-assembly process.
C1 [Murnen, Hannah K.; Rosales, Adrianne M.; Segalman, Rachel A.] Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA.
[Jaworsk, Jonathan N.; Zuckermann, Ronald N.] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA.
[Segalman, Rachel A.; Zuckermann, Ronald N.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Segalman, RA (reprint author), Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA.
EM segalman@berkeley.edu; mzuckermann@lbl.gov
RI Zuckermann, Ronald/A-7606-2014;
OI Zuckermann, Ronald/0000-0002-3055-8860; Segalman,
Rachel/0000-0002-4292-5103
FU Office of Naval Research; Office of Science, Office of Basic Energy
Sciences, U.S. Department of Energy [DE-AC02-05CH11231]; Department of
Defense; National Science Foundation; Defense Threat Reduction Agency
FX This work was supported by the Office of Naval Research in the form of a
Presidential Early Career Award in Science and Engineering (PECASE) for
R.A.S. Polypeptoid synthesis and associated chemical characterization
were performed at the Molecular Foundry, and XRD experiments were
performed at the Advanced Light Source (ALS). Both are Lawrence Berkeley
National Laboratory user facilities supported by the Office of Science,
Office of Basic Energy Sciences, U.S. Department of Energy, under
Contract No. DE-AC02-05CH11231. The authors thank Dr. James Holton and
George Meigs for experimental assistance and Dr. Gary Ren for helpful
discussions. H.K.M. acknowledges the Department of Defense for an NDSEG
fellowship, and A.M.R. acknowledges the National Science Foundation for
a graduate fellowship. J.N.J. acknowledges the Defense Threat Reduction
Agency for financial support.
NR 72
TC 61
Z9 61
U1 2
U2 72
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD NOV 17
PY 2010
VL 132
IS 45
BP 16112
EP 16119
DI 10.1021/ja106340f
PG 8
WC Chemistry, Multidisciplinary
SC Chemistry
GA 680AK
UT WOS:000284202200054
PM 20964429
ER
PT J
AU Stoffelsma, C
Rodriguez, P
Garcia, G
Garcia-Araez, N
Strmcnik, D
Markovic, NM
Koper, MTM
AF Stoffelsma, Chantal
Rodriguez, Paramaconi
Garcia, Gonzalo
Garcia-Araez, Nuria
Strmcnik, Dusan
Markovic, Nenad M.
Koper, Marc T. M.
TI Promotion of the Oxidation of Carbon Monoxide at Stepped Platinum
Single-Crystal Electrodes in Alkaline Media by Lithium and Beryllium
Cations
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID SULFURIC-ACID-SOLUTIONS; ADSORPTION; REDUCTION; PT(111); NITRATE;
ELECTROCATALYSIS; HYDROXIDE; GERMANIUM; MECHANISM; SURFACES
AB The role of alkali cations (Li(+), Na(+) K(+) Cs(+), and Be(2+)) on the blank voltammetric response and the oxidative stripping of carbon monoxide from stepped Pt single-crystal electrodes in alkaline media has been investigated by cyclic voltammetry. A strong influence of the nature of the cation on both the blank voltammetric profile and the CO oxidation is observed and related to the influence of the cation on the specific adsorption of OH on the platinum surface. Especially Li(+) and Be(2+) cations markedly affect the adsorption of OH and thereby have a significant promoting effect on CO(ads) oxidation. The voltammetric experiments suggest that, on Pt(111), the influence of Li(+) (and Be(2+)) is primarily through a weakening of the repulsive interactions between the OH in the OH adlayer, whereas in the presence of steps also, the onset of OH adsorption is at a lower potential, both on steps and on terraces.
C1 [Stoffelsma, Chantal; Rodriguez, Paramaconi; Garcia, Gonzalo; Garcia-Araez, Nuria; Koper, Marc T. M.] Leiden Univ, Leiden Inst Chem, NL-2300 RA Leiden, Netherlands.
[Garcia-Araez, Nuria] FOM, Inst Atom & Mol Phys AMOLF, NL-1009 DB Amsterdam, Netherlands.
[Strmcnik, Dusan; Markovic, Nenad M.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Rodriguez, P (reprint author), Leiden Univ, Leiden Inst Chem, POB 9502, NL-2300 RA Leiden, Netherlands.
EM rodriguezperezpb@chem.leidenuniv.nl; m.koper@chem.leidenuniv.nl
RI Koper, Marc/C-5026-2009; Garcia-Araez, Nuria/A-5194-2013; Rodriguez,
Paramaconi/A-6214-2014; GARCIA, GONZALO/L-9936-2014
OI Garcia-Araez, Nuria/0000-0001-9095-2379; Rodriguez,
Paramaconi/0000-0002-1517-0964; GARCIA, GONZALO/0000-0002-5476-0182
FU Netherlands Organization for Scientific Research (NWO); European
Commission [214936-2]; University of Chicago; University of Argonne,
LLC; U.S. Department of Energy, Office of Science, Office of Basic
Energy Sciences [DE-AC02-06CH11357]
FX P.R., G.G., and M.T.M.K. acknowledge financial support from The
Netherlands Organization for Scientific Research (NWO) and the European
Commission (through FP7 Initial Training Network "ELCAT", Grant
Agreement No. 214936-2). D.S. and N.M.M. would like to acknowledge
support by the contract between the University of Chicago and Argonne,
LLC, and the U.S. Department of Energy, Office of Science, Office of
Basic Energy Sciences (DE-AC02-06CH11357). N.G. acknowledges the
European Commission (FP7) for the award of a Marie Curie fellowship.
NR 32
TC 42
Z9 42
U1 5
U2 54
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD NOV 17
PY 2010
VL 132
IS 45
BP 16127
EP 16133
DI 10.1021/ja106389k
PG 7
WC Chemistry, Multidisciplinary
SC Chemistry
GA 680AK
UT WOS:000284202200056
PM 20979396
ER
PT J
AU Duque, JG
Densmore, CG
Doorn, SK
AF Duque, Juan G.
Densmore, Crystal G.
Doorn, Stephen K.
TI Saturation of Surfactant Structure at the Single-Walled Carbon Nanotube
Surface
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID DENSITY GRADIENT ULTRACENTRIFUGATION; SODIUM DODECYL-SULFATE; SDS
SURFACTANTS; FLUORESCENCE; DIAMETER; MICELLES; LUMINESCENCE;
SPECTROSCOPY; AGGREGATION; SELECTIVITY
AB Density gradient ultracentrifugation (DGU) and fluorescence spectroscopy are used to probe the limiting behaviors of the dynamic response of surfactant structure at the single-walled carbon nanotube (SWNT) surface to reorganizing forces, including changes in surfactant concentration and electrolyte screening. DGU results indicate that, as surfactant (sodium dodecyl sulfate, SDS) concentration is increased, SDS adsorbed on metallic SWNTs becomes limited in its ability to reorganize before SDS adsorbed on semiconducting species. A diameter-dependent enhancement is observed in photoluminescence intensities from semiconducting SWNTS upon initial titration with NaCl. This response to electrostatic screening diminishes as SDS concentration is increased. The results are understood as a saturation of the surfactant structural response, defined as both a loss in ability to increase SDS loading at the SWNT surface and a loss in ability to reorient surface structure in response to a reorganizing force. Saturation of response is found to be reversible and also occurs as a result of restricting SDS mobility. These results confirm several aspects of recent molecular dynamics simulations of SDS behavior on SWNTs and have important implications for tunability of density-based separation approaches using cosurfactant systems that include SDS.
C1 [Doorn, Stephen K.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol MPA CINT, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA.
[Duque, Juan G.] Los Alamos Natl Lab, Div Chem, Phys Chem & Appl Spect Grp C PCS, Los Alamos, NM 87545 USA.
[Densmore, Crystal G.] Los Alamos Natl Lab, Chem Diagnost & Engn Grp C CDE, Los Alamos, NM 87545 USA.
RP Doorn, SK (reprint author), Los Alamos Natl Lab, Ctr Integrated Nanotechnol MPA CINT, Mat Phys & Applicat Div, POB 1663, Los Alamos, NM 87545 USA.
EM skdoorn@lanl.gov
RI Duque, Juan/G-2657-2010
FU LANL-LDRD
FX We thank the Smalley Institute for Nanoscale Science and Technology at
Rice University for supplying SWNTs. This work was supported by
LANL-LDRD funding. J.G.D. thanks the LANL-LDRD Director's Postdoctoral
Fellowship. This work was performed in part at the Center for Integrated
Nanotechnologies, a U.S. Department of Energy, Office of Basic Energy
Sciences user facility.
NR 60
TC 45
Z9 45
U1 5
U2 56
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD NOV 17
PY 2010
VL 132
IS 45
BP 16165
EP 16175
DI 10.1021/ja106836f
PG 11
WC Chemistry, Multidisciplinary
SC Chemistry
GA 680AK
UT WOS:000284202200060
PM 20973529
ER
PT J
AU Freedman, DE
Han, TH
Prodi, A
Muller, P
Huang, QZ
Chen, YS
Webb, SM
Lee, YS
McQueen, TM
Nocera, DG
AF Freedman, Danna E.
Han, Tianheng H.
Prodi, Andrea
Mueller, Peter
Huang, Qing-Zhen
Chen, Yu-Sheng
Webb, Samuel M.
Lee, Young S.
McQueen, Tyrel M.
Nocera, Daniel G.
TI Site Specific X-ray Anomalous Dispersion of the Geometrically Frustrated
Kagome Magnet, Herbertsmithite, ZnCu3(OH)(6)Cl-2
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID CRYSTAL-STRUCTURE; CATION DISTRIBUTION; SCATTERING; DIFFRACTION;
ANTIFERROMAGNET; ADSORPTION; FRAMEWORK; FERRITE
AB Structural characterization, exploiting X-ray scattering differences at elemental absorption edges, is developed to quantitatively determine crystallographic site-specific metal disorder. We apply this technique to the problem of Zn-Cu chemical disorder in ZnCu3(OH)(6)Cl-2. This geometrically frustrated kagome antiferromagnet is one of the best candidates for a spin-liquid ground state, but chemical disorder has been suggested as a mundane explanation for its magnetic properties. Using anomalous scattering at the Zn and Cu edges, we determine that there is no Zn occupation of the intralayer Cu sites within the kagome layer; however there is Cu present on the Zn intersite, leading to a structural formula of (Zn0.85Cu0.15)-Cu-3(OH)(6)Cl-2. The lack of Zn mixing onto the kagome lattice sites lends support to the idea that the electronic ground state in ZnCu3(OH)(6)Cl-2 and its relatives is nontrivial.
C1 [Freedman, Danna E.; Mueller, Peter; McQueen, Tyrel M.; Nocera, Daniel G.] MIT, Dept Chem, Cambridge, MA 02139 USA.
[Han, Tianheng H.; Prodi, Andrea; Lee, Young S.] MIT, Dept Phys, Cambridge, MA 02139 USA.
[Huang, Qing-Zhen] NIST, Gaithersburg, MD 20899 USA.
[Chen, Yu-Sheng] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Webb, Samuel M.] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
RP Nocera, DG (reprint author), MIT, Dept Chem, 6-335, Cambridge, MA 02139 USA.
EM nocera@mit.edu
RI Muller, Peter/A-8858-2008; Webb, Samuel/D-4778-2009;
OI Muller, Peter/0000-0001-6530-3852; Webb, Samuel/0000-0003-1188-0464;
Freedman, Danna/0000-0002-2579-8835
FU NSF [DMR 0819762]; DOE [DE-FG02-04ER46134]; U.S. Department of Energy,
Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357,
DE-AC02-98CH10886]
FX This work was supported primarily by the MRSEC Program of the NSF under
Award Number DMR 0819762 and DOE under Grant No. DE-FG02-04ER46134. Use
of the Advanced Photon Source was supported by the U.S. Department of
Energy, Office of Science, Office of Basic Energy Sciences, under
Contract No. DE-AC02-06CH11357. Use of the National Synchrotron Light
Source, Brookhaven National Laboratory, was supported by the U.S.
Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract No. DE-AC02-98CH10886.
NR 41
TC 68
Z9 68
U1 3
U2 36
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD NOV 17
PY 2010
VL 132
IS 45
BP 16185
EP 16190
DI 10.1021/ja1070398
PG 6
WC Chemistry, Multidisciplinary
SC Chemistry
GA 680AK
UT WOS:000284202200062
PM 20964423
ER
PT J
AU Mugridge, JS
Szigethy, G
Bergman, RG
Raymond, KN
AF Mugridge, Jeffrey S.
Szigethy, Geza
Bergman, Robert G.
Raymond, Kenneth N.
TI Encapsulated Guest-Host Dynamics: Guest Rotational Barriers and Tumbling
as a Probe of Host Interior Cavity Space
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID H BOND ACTIVATION; SUPRAMOLECULAR HOST; MOLECULAR RECOGNITION; SYNTHETIC
RECEPTOR; ANIONIC HOST; CATALYSIS; EXCHANGE; CAPSULES; CLUSTER;
STABILIZATION
AB The supramolecular host assembly [Ga(4)L(6)](12-) (1; L = 1,5-bis[2,3-dihydroxybenzamido]naphthalene) encapsulates cationic guest molecules within its hydrophobic cavity and catalyzes a variety of chemical transformations within its confined interior space. Despite the well-defined structure, the host ligand framework and interior cavity are very flexible and 1 can accommodate a wide range of guest shapes and sizes. These observations raise questions about the steric effects of confinement within 1 and how encapsulation fundamentally changes the motions of guest molecules. Here we examine the motional dynamics (guest bond rotation and tumbling) of encapsulated guest molecules to probe the steric consequences of encapsulation within host 1. Encapsulation is found to increase the Ph-CH(2) bond rotational barrier for ortho-substituted benzyl phosphonium guest molecules by 3 to 6 kcal/mol, and the barrier is found to depend on both guest size and shape. The tumbling dynamics of guests encapsulated in 1 were also investigated, and here it was found that longer, more prolate-shaped guest molecules tumble more slowly in the host cavity than larger but more spherical guest molecules. The prolate guests reduce the host symmetry from T to C(1) in solution at low temperatures, and the distortion of the host framework that is in part responsible for this symmetry reduction is observed directly in the solid state. Analysis of guest motional dynamics is a powerful method for interrogating host structure and fundamental host-guest interactions.
C1 [Bergman, Robert G.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Bergman, RG (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM rbergman@berkeley.edu; raymond@socrates.berkeley.edu
FU NSF [CHE-0233882, CHE-0840505]; Office of Science, Office of Basic
Energy Sciences; Division of Chemical Sciences, Geosciences, and
Biosciences of the U.S. Department of Energy at LBNL [DE-AC02-05CH11231]
FX The authors would like to thank Dr. Jamin Krinsky and Dr. Kathleen
Durkin for assistance with computational and modeling studies and
acknowledge NSF Grants CHE-0233882 and CHE-0840505, which fund the UC
Berkeley Molecular Graphics and Computational Facility. We also thank
Dr. Michael Pluth, Dr. Carmelo Sgarlata, Courtney Hastings, and Casey
Brown for helpful discussions. This work has been supported by the
Director, Office of Science, Office of Basic Energy Sciences, and the
Division of Chemical Sciences, Geosciences, and Biosciences of the U.S.
Department of Energy at LBNL under Contract No. DE-AC02-05CH11231 and an
NSF predoctoral fellowship to J.S.M.
NR 65
TC 28
Z9 28
U1 4
U2 45
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD NOV 17
PY 2010
VL 132
IS 45
BP 16256
EP 16264
DI 10.1021/ja107656g
PG 9
WC Chemistry, Multidisciplinary
SC Chemistry
GA 680AK
UT WOS:000284202200069
PM 20977233
ER
PT J
AU Acosta, VM
Jarmola, A
Bauch, E
Budker, D
AF Acosta, V. M.
Jarmola, A.
Bauch, E.
Budker, D.
TI Optical properties of the nitrogen-vacancy singlet levels in diamond
SO PHYSICAL REVIEW B
LA English
DT Article
ID NUCLEAR-SPIN QUBITS; N-V CENTERS; DEFECT CENTERS; COUPLED ELECTRON;
SPECTROSCOPY; MICROSCOPY; DYNAMICS; ENTANGLEMENT; POLARIZATION;
RESOLUTION
AB We report measurements of the optical properties of the 1042 nm transition of negatively charged nitrogen-vacancy (NV) centers in type-1b diamond. The results indicate that the upper level of this transition couples to the m(s) = +/- 1 sublevels of the E-3 excited state and is short lived with a lifetime of less than or similar to 1 ns. The lower level is shown to have a temperature-dependent lifetime of 462(10) ns at 4.4 K and 219(3) ns at 295 K. The light-polarization dependence of 1042 nm absorption confirms that the transition is between orbitals of A(1) and E character. The results shed light on the NV level structure and optical pumping mechanism.
C1 [Acosta, V. M.; Jarmola, A.; Bauch, E.; Budker, D.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Budker, D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Acosta, VM (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM vmacosta@berkeley.edu
RI Acosta, Victor/G-8176-2011; Budker, Dmitry/F-7580-2016;
OI Budker, Dmitry/0000-0002-7356-4814; Acosta, Victor/0000-0003-0058-9954
FU NSF [PHY-0855552]
FX The authors are grateful to A. Gali, N. Manson, L. Rogers, M. Doherty,
P. Hemmer, E. Corsini, B. Patton, M. Ledbetter, and L. Zipp for valuable
discussions. This work was supported by NSF under Grant No. PHY-0855552.
NR 40
TC 61
Z9 61
U1 5
U2 35
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 17
PY 2010
VL 82
IS 20
AR 201202
DI 10.1103/PhysRevB.82.201202
PG 4
WC Physics, Condensed Matter
SC Physics
GA 681IY
UT WOS:000284306400003
ER
PT J
AU Bud'ko, SL
Kogan, VG
Hodovanets, H
Ran, S
Moser, SA
Lampe, MJ
Canfield, PC
AF Bud'ko, S. L.
Kogan, V. G.
Hodovanets, H.
Ran, S.
Moser, S. A.
Lampe, M. J.
Canfield, P. C.
TI Evolution of ground state and upper critical field in R1-xGdxNi2B2C (R =
Lu, Y): Coexistence of superconductivity and spin-glass state
SO PHYSICAL REVIEW B
LA English
DT Article
ID MAGNETIC BOROCARBIDE SUPERCONDUCTORS; ANISOTROPIC SUPERCONDUCTORS; WAVE
SUPERCONDUCTIVITY; PAIR-BREAKING; IMPURITIES; YNI2B2C; TEMPERATURE;
LUNI2B2C; HEAT; TRANSITIONS
AB We report effects of local magnetic moment, Gd3+, doping (x less than or similar to 0.3) on superconducting and magnetic properties of the closely related Lu1-xGdxNi2B2C and Y1-xGdxNi2B2C series. The superconducting transition temperature decreases and the heat capacity jump associated with it drops rapidly with Gd doping; qualitative changes with doping are also observed in the temperature-dependent upper critical field behavior, and a region of coexistence of superconductivity and spin-glass state is delineated on the x-T phase diagram. The evolution of superconducting properties can be understood within Abrikosov-Gor'kov theory of magnetic impurities in superconductors taking into account the paramagnetic effect on upper critical field with additional contributions particular for the family under study.
C1 [Bud'ko, S. L.] US DOE, Ames Lab, Ames, IA 50011 USA.
Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
RP Bud'ko, SL (reprint author), US DOE, Ames Lab, Ames, IA 50011 USA.
RI Canfield, Paul/H-2698-2014
FU U.S. Department of Energy-Basic Energy Sciences [DE-AC02-07CH11358]
FX Work at the Ames Laboratory was supported by the U.S. Department of
Energy-Basic Energy Sciences under Contract No. DE-AC02-07CH11358. This
manuscript was finalized during the Ames floods of 2010, the second
"hundred year floods" in a 15 year time span.
NR 58
TC 2
Z9 2
U1 0
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 17
PY 2010
VL 82
IS 17
AR 174513
DI 10.1103/PhysRevB.82.174513
PG 7
WC Physics, Condensed Matter
SC Physics
GA 681IS
UT WOS:000284305800008
ER
PT J
AU Chaudhury, RP
Ye, F
Fernandez-Baca, JA
Wang, YQ
Sun, YY
Lorenz, B
Mook, HA
Chu, CW
AF Chaudhury, R. P.
Ye, F.
Fernandez-Baca, J. A.
Wang, Y. -Q.
Sun, Y. Y.
Lorenz, B.
Mook, H. A.
Chu, C. W.
TI Magnetic and multiferroic phases of single-crystalline Mn0.85Co0.15WO4
SO PHYSICAL REVIEW B
LA English
DT Article
ID NEUTRON-DIFFRACTION; MNWO4; TRANSITIONS; PRESSURE
AB The magnetic and multiferroic phase diagram of Mn0.85Co0.15WO4 single crystals is investigated by means of magnetic, heat-capacity, dielectric, polarization, and neutron-scattering experiments. Three magnetic phase transitions are detected through distinct anomalies in all physical quantities. The ferroelectric polarization is observed only along the b axis below 10 K but not along the a axis as recently suggested. The magnetic phases studied by neutron scattering are very complex. Up to four different magnetic structures, partially coexisting at certain temperature ranges, have been identified. Upon decreasing temperature two commensurate phases (AF4, AF1) are followed by an incommensurate phase (AF5) and a second incommensurate phase (AF2) is detected as a minor phase. The ferroelectric polarization is possibly associated with both (AF2 and AF5) phases.
C1 [Chaudhury, R. P.; Wang, Y. -Q.; Sun, Y. Y.; Lorenz, B.; Chu, C. W.] Univ Houston, TCSUH, Houston, TX 77204 USA.
[Chaudhury, R. P.; Wang, Y. -Q.; Sun, Y. Y.; Lorenz, B.; Chu, C. W.] Univ Houston, Dept Phys, Houston, TX 77204 USA.
[Ye, F.; Fernandez-Baca, J. A.; Mook, H. A.] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
[Fernandez-Baca, J. A.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Chu, C. W.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Chaudhury, RP (reprint author), Univ Houston, TCSUH, Houston, TX 77204 USA.
RI Ye, Feng/B-3210-2010; Fernandez-Baca, Jaime/C-3984-2014
OI Ye, Feng/0000-0001-7477-4648; Fernandez-Baca, Jaime/0000-0001-9080-5096
FU T.L.L. Temple Foundation; J.J. and R. Moores Endowment; State of Texas
through TCSUH; USAF Office of Scientific Research, at LBNL through the
U.S. Department of Energy; Division of Scientific User Facilities of the
Office of Basic Energy Sciences, U.S. Department of Energy
FX This work is supported in part by the T.L.L. Temple Foundation, the J.J.
and R. Moores Endowment, the State of Texas through TCSUH, the USAF
Office of Scientific Research, at LBNL through the U.S. Department of
Energy, and by the Division of Scientific User Facilities of the Office
of Basic Energy Sciences, U.S. Department of Energy.
NR 36
TC 27
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U1 0
U2 10
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 17
PY 2010
VL 82
IS 18
AR 184422
DI 10.1103/PhysRevB.82.184422
PG 5
WC Physics, Condensed Matter
SC Physics
GA 681IT
UT WOS:000284305900006
ER
PT J
AU Deng, HX
Li, JB
Li, SS
Peng, HW
Xia, JB
Wang, LW
Wei, SH
AF Deng, Hui-Xiong
Li, Jingbo
Li, Shu-Shen
Peng, Haowei
Xia, Jian-Bai
Wang, Lin-Wang
Wei, Su-Huai
TI Band crossing in isovalent semiconductor alloys with large size
mismatch: First-principles calculations of the electronic structure of
Bi and N incorporated GaAs
SO PHYSICAL REVIEW B
LA English
DT Article
ID IMPURITIES; GAAS1-XNX; NITROGEN; GAINNAS; STATES; TRAPS
AB For large size- and chemical-mismatched isovalent semiconductor alloys, such as N and Bi substitution on As sites in GaAs, isovalent defect levels or defect bands are introduced. The evolution of the defect states as a function of the alloy concentration is usually described by the popular phenomenological band anticrossing (BAC) model. Using first-principles band-structure calculations we show that at the impurity limit the N-(Bi)-induced impurity level is above (below) the conduction- (valence-) band edge of GaAs. These trends reverse at high concentration, i.e., the conduction-band edge of GaAs(1-x)N(x) becomes an N-derived state and the valence-band edge of GaAs(1-x)Bi(x) becomes a Bi-derived state, as expected from their band characters. We show that this band crossing phenomenon cannot be described by the popular BAC model but can be naturally explained by a simple band broadening picture.
C1 [Deng, Hui-Xiong; Li, Jingbo; Li, Shu-Shen; Peng, Haowei; Xia, Jian-Bai] Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China.
[Wang, Lin-Wang] Univ Calif Berkeley, Lawrence Berkeley Lab, Computat Res Div, Berkeley, CA 94720 USA.
[Wei, Su-Huai] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Deng, HX (reprint author), Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, POB 912, Beijing 100083, Peoples R China.
EM jbli@semi.ac.cn
RI Peng, Haowei/K-4654-2012
OI Peng, Haowei/0000-0002-6502-8288
FU "973" program of the National Basic Research Program of China
[G2009CB929300]; National Natural Science Foundation of China [60821061,
60776061]; Chinese Academy of Sciences; U.S. Department of Energy
[DE-AC36-08GO28308]
FX This work was supported by the "973" program of the National Basic
Research Program of China under Grant No. G2009CB929300 and the National
Natural Science Foundation of China under Grants No. 60821061 and No.
60776061. J.L. acknowledges financial support by the
"One-hundred-Talent-Plan" program of the Chinese Academy of Sciences.
The work at NREL was supported by the U.S. Department of Energy, under
Contract No. DE-AC36-08GO28308.
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 17
PY 2010
VL 82
IS 19
AR 193204
DI 10.1103/PhysRevB.82.193204
PG 4
WC Physics, Condensed Matter
SC Physics
GA 681IV
UT WOS:000284306100002
ER
PT J
AU Kim, JS
Seo, SSA
Chisholm, MF
Kremer, RK
Habermeier, HU
Keimer, B
Lee, HN
AF Kim, J. S.
Seo, S. S. A.
Chisholm, M. F.
Kremer, R. K.
Habermeier, H. -U.
Keimer, B.
Lee, H. N.
TI Nonlinear Hall effect and multichannel conduction in LaTiO3/SrTiO3
superlattices
SO PHYSICAL REVIEW B
LA English
DT Article
ID DIELECTRIC PROPERTIES; MOTT-INSULATOR; HETEROSTRUCTURES; INTERFACE;
TITANATE; OXIDES; SRTIO3
AB We report magnetotransport properties of heterointerfaces between the Mott insulator LaTiO3 and the band insulator SrTiO3 in a delta-doping geometry. At low temperatures, we have found a strong nonlinearity in the magnetic field dependence of the Hall resistivity, which can be effectively controlled by varying the temperature and the electric field. We attribute this effect to multichannel conduction of interfacial charges generated by an electronic reconstruction. In particular, the formation of a highly mobile conduction channel revealed by our data is explained by the greatly increased dielectric permeability of SrTiO3 at low temperatures and its electric field dependence reflects the spatial distribution of the quasi-two-dimensional electron gas.
C1 [Kim, J. S.; Seo, S. S. A.; Kremer, R. K.; Habermeier, H. -U.; Keimer, B.] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany.
[Kim, J. S.] Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea.
[Seo, S. S. A.; Chisholm, M. F.; Lee, H. N.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Kim, JS (reprint author), Max Planck Inst Festkorperforsch, Heisenbergstr 1, D-70569 Stuttgart, Germany.
EM hnlee@ornl.gov
RI Kim, Jun Sung/G-8861-2012; Seo, Sung Seok/B-6964-2008; Lee, Ho
Nyung/K-2820-2012
OI Kim, Jun Sung/0000-0002-1413-7265; Seo, Sung Seok/0000-0002-7055-5314;
Lee, Ho Nyung/0000-0002-2180-3975
FU Division of Materials Sciences and Engineering, U.S. Department of
Energy; National Research Foundation of Korea [2009-0076700]; DFG
[SFB/TRR 80]
FX We thank K. B. Lee and S. Okamoto for useful discussions and comments.
The work at ORNL was supported by the Division of Materials Sciences and
Engineering, U. S. Department of Energy. The work at POSTECH was
supported by the National Research Foundation of Korea through Basic
Science Research Program (Grant No. 2009-0076700). We also acknowledge
support by the DFG under Grant No. SFB/TRR 80.
NR 26
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 17
PY 2010
VL 82
IS 20
AR 201407
DI 10.1103/PhysRevB.82.201407
PG 4
WC Physics, Condensed Matter
SC Physics
GA 681IY
UT WOS:000284306400005
ER
PT J
AU de Putter, R
Takada, M
AF de Putter, Roland
Takada, Masahiro
TI Halo-galaxy lensing: A full sky approach
SO PHYSICAL REVIEW D
LA English
DT Article
ID N-BODY SIMULATIONS; SCALE-DEPENDENT BIAS; NON-GAUSSIANITY; MASS
FUNCTION; DARK MATTER; CLUSTERS; MODEL
AB The halo-galaxy lensing correlation function or the average tangential shear profile over sampled halos is a very powerful means of measuring the halo masses, the mass profile, and the halo-mass correlation function of very large separations in the linear regime. We reformulate the halo-galaxy lensing correlation in harmonic space. We find that, counterintuitively, errors in the conventionally used flat-sky approximation remain at a percent level even at very small angles. The errors increase at larger angles and for lensing halos at lower redshifts: the effect is at a few percent level at the baryonic acoustic oscillation scales for lensing halos of z similar to 0.2, and comparable with the effect of primordial non-Gaussianity with f(NL) similar to 10 at large separations. Our results allow one to readily estimate/correct for the full-sky effect on a high-precision measurement of the average shear profile available from upcoming wide-area lensing surveys.
C1 [de Putter, Roland] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[de Putter, Roland] Inst Fis Corpuscular, Valencia, Spain.
[de Putter, Roland] Inst Ciencies Cosmos, Barcelona, Spain.
[Takada, Masahiro] Univ Tokyo, IPMU, Chiba 2778582, Japan.
RP de Putter, R (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
FU World Premier International Research Center Initiative (WPI Initiative),
MEXT, Japan; Office of Science, Office of High Energy Physics, of the
U.S. Department of Energy [DE-AC02-05CH11231]
FX We thank A. Stebbins for useful discussions. This work is supported in
part by World Premier International Research Center Initiative (WPI
Initiative), MEXT, Japan. R. d. P has been supported in part by the
Director, Office of Science, Office of High Energy Physics, of the U.S.
Department of Energy under Contract No. DE-AC02-05CH11231.
NR 38
TC 9
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U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 17
PY 2010
VL 82
IS 10
AR 103522
DI 10.1103/PhysRevD.82.103522
PG 9
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 681JF
UT WOS:000284307100002
ER
PT J
AU Fomin, N
Arrington, J
Day, DB
Gaskell, D
Daniel, A
Seely, J
Asaturyan, R
Benmokhtar, F
Boeglin, W
Boillat, B
Bosted, P
Bruell, A
Bukhari, MHS
Christy, ME
Chudakov, E
Clasie, B
Connell, SH
Dalton, MM
Dutta, D
Ent, R
El Fassi, L
Fenker, H
Filippone, BW
Garrow, K
Hill, C
Holt, RJ
Horn, T
Jones, MK
Jourdan, J
Kalantarians, N
Keppel, CE
Kiselev, D
Kotulla, M
Lindgren, R
Lung, AF
Malace, S
Markowitz, P
Mckee, P
Meekins, DG
Miyoshi, T
Mkrtchyan, H
Navasardyan, T
Niculescu, G
Okayasu, Y
Opper, AK
Perdrisat, C
Potterveld, DH
Punjabi, V
Qian, X
Reimer, PE
Roche, J
Rodriguez, VM
Rondon, O
Schulte, E
Segbefia, E
Slifer, K
Smith, GR
Solvignon, P
Tadevosyan, V
Tajima, S
Tang, L
Testa, G
Trojer, R
Tvaskis, V
Vulcan, WF
Wasko, C
Wesselmann, FR
Wood, SA
Wright, J
Zheng, X
AF Fomin, N.
Arrington, J.
Day, D. B.
Gaskell, D.
Daniel, A.
Seely, J.
Asaturyan, R.
Benmokhtar, F.
Boeglin, W.
Boillat, B.
Bosted, P.
Bruell, A.
Bukhari, M. H. S.
Christy, M. E.
Chudakov, E.
Clasie, B.
Connell, S. H.
Dalton, M. M.
Dutta, D.
Ent, R.
El Fassi, L.
Fenker, H.
Filippone, B. W.
Garrow, K.
Hill, C.
Holt, R. J.
Horn, T.
Jones, M. K.
Jourdan, J.
Kalantarians, N.
Keppel, C. E.
Kiselev, D.
Kotulla, M.
Lindgren, R.
Lung, A. F.
Malace, S.
Markowitz, P.
Mckee, P.
Meekins, D. G.
Miyoshi, T.
Mkrtchyan, H.
Navasardyan, T.
Niculescu, G.
Okayasu, Y.
Opper, A. K.
Perdrisat, C.
Potterveld, D. H.
Punjabi, V.
Qian, X.
Reimer, P. E.
Roche, J.
Rodriguez, V. M.
Rondon, O.
Schulte, E.
Segbefia, E.
Slifer, K.
Smith, G. R.
Solvignon, P.
Tadevosyan, V.
Tajima, S.
Tang, L.
Testa, G.
Trojer, R.
Tvaskis, V.
Vulcan, W. F.
Wasko, C.
Wesselmann, F. R.
Wood, S. A.
Wright, J.
Zheng, X.
TI Scaling of the F-2 Structure Function in Nuclei and Quark Distributions
at x > 1
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID INCLUSIVE ELECTRON-SCATTERING; INELASTIC LEPTON SCATTERING; DEPENDENCE
AB We present new data on electron scattering from a range of nuclei taken in Hall C at Jefferson Lab. For heavy nuclei, we observe a rapid falloff in the cross section for x > 1, which is sensitive to short-range contributions to the nuclear wave function, and in deep inelastic scattering corresponds to probing extremely high momentum quarks. This result agrees with higher energy muon scattering measurements, but is in sharp contrast to neutrino scattering measurements which suggested a dramatic enhancement in the distribution of the "superfast" quarks probed at x > 1. The falloff at x > 1 is noticeably stronger in H-2 and He-3, but nearly identical for all heavier nuclei.
C1 [Fomin, N.; Day, D. B.; Dalton, M. M.; Hill, C.; Lindgren, R.; Mckee, P.; Rondon, O.; Slifer, K.; Tajima, S.; Wasko, C.; Wright, J.; Zheng, X.] Univ Virginia, Charlottesville, VA 22903 USA.
[Fomin, N.] Univ Tennessee, Knoxville, TN USA.
[Arrington, J.; El Fassi, L.; Holt, R. J.; Potterveld, D. H.; Reimer, P. E.; Schulte, E.; Solvignon, P.; Zheng, X.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Gaskell, D.; Bosted, P.; Bruell, A.; Chudakov, E.; Ent, R.; Fenker, H.; Horn, T.; Jones, M. K.; Keppel, C. E.; Lung, A. F.; Meekins, D. G.; Roche, J.; Smith, G. R.; Tang, L.; Vulcan, W. F.; Wood, S. A.] Thomas Jefferson Natl Lab, Newport News, VA USA.
[Daniel, A.; Bukhari, M. H. S.; Kalantarians, N.; Rodriguez, V. M.] Univ Houston, Houston, TX USA.
[Seely, J.; Clasie, B.] MIT, Cambridge, MA 02139 USA.
[Asaturyan, R.; Mkrtchyan, H.; Navasardyan, T.; Tadevosyan, V.] Yerevan Phys Inst, Yerevan 375036, Armenia.
[Benmokhtar, F.; Horn, T.] Univ Maryland, College Pk, MD 20742 USA.
[Boeglin, W.; Markowitz, P.] Florida Int Univ, Miami, FL 33199 USA.
[Boillat, B.; Jourdan, J.; Kiselev, D.; Kotulla, M.; Testa, G.; Trojer, R.] Univ Basel, Basel, Switzerland.
[Christy, M. E.; Keppel, C. E.; Malace, S.; Segbefia, E.; Tang, L.; Tvaskis, V.] Hampton Univ, Hampton, VA 23668 USA.
[Connell, S. H.] Univ Johannesburg, Johannesburg, South Africa.
[Dutta, D.] Mississippi State Univ, Jackson, MS USA.
[Dutta, D.; Qian, X.] Duke Univ, Durham, NC USA.
[Filippone, B. W.] CALTECH, Kellogg Radiat Lab, Pasadena, CA 91125 USA.
[Garrow, K.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
[Miyoshi, T.; Okayasu, Y.] Tohoku Univ, Sendai, Miyagi 980, Japan.
[Niculescu, G.] James Madison Univ, Harrisonburg, VA 22807 USA.
[Opper, A. K.; Roche, J.] Ohio Univ, Athens, OH 45701 USA.
[Perdrisat, C.] Coll William & Mary, Williamsburg, VA USA.
[Punjabi, V.; Wesselmann, F. R.] Norfolk State Univ, Norfolk, VA USA.
RP Fomin, N (reprint author), Univ Virginia, Charlottesville, VA 22903 USA.
RI Holt, Roy/E-5803-2011; Arrington, John/D-1116-2012; Rondon Aramayo,
Oscar/B-5880-2013; Reimer, Paul/E-2223-2013; Day, Donal/C-5020-2015;
Dalton, Mark/B-5380-2016;
OI Arrington, John/0000-0002-0702-1328; Day, Donal/0000-0001-7126-8934;
Dalton, Mark/0000-0001-9204-7559; Qian, Xin/0000-0002-7903-7935
FU NSF [NSF-0244899]; DOE [DE-FG02-96ER40950, DE-AC02-06CH11357,
DE-AC05-06OR23177]; JSA; LLC operates JLab; South African NRF
FX We thank the JLab technical staff and accelerator division for their
contributions. This work supported in part by the NSF and DOE, including
Grant No. NSF-0244899 and DOE Contracts No. DE-FG02-96ER40950, No.
DE-AC02-06CH11357, and No. DE-AC05-06OR23177 under which JSA, LLC
operates JLab, and the South African NRF.
NR 25
TC 6
Z9 6
U1 1
U2 4
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 17
PY 2010
VL 105
IS 21
AR 212502
DI 10.1103/PhysRevLett.105.212502
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 681JR
UT WOS:000284308500008
PM 21231294
ER
PT J
AU Khachatryan, V
Sirunyan, AM
Tumasyan, A
Adam, W
Bergauer, T
Dragicevic, M
Ero, J
Fabjan, C
Friedl, M
Fruhwirth, R
Ghete, VM
Hammer, J
Hansel, S
Hartl, C
Hoch, M
Hormann, N
Hrubec, J
Jeitler, M
Kasieczka, G
Kiesenhofer, W
Krammer, M
Liko, D
Mikulec, I
Pernicka, M
Rohringer, H
Schofbeck, R
Strauss, J
Taurok, A
Teischinger, F
Waltenberger, W
Walzel, G
Widl, E
Wulz, CE
Mossolov, V
Shumeiko, N
Gonzalez, JS
Benucci, L
Ceard, L
De Wolf, EA
Janssen, X
Maes, T
Mucibello, L
Ochesanu, S
Roland, B
Rougny, R
Selvaggi, M
Van Haevermaet, H
Van Mechelen, P
Van Remortel, N
Adler, V
Beauceron, S
Blyweert, S
D'Hondt, J
Devroede, O
Kalogeropoulos, A
Maes, J
Maes, M
Tavernier, S
Van Doninck, W
Van Mulders, P
Villella, I
Chabert, EC
Charaf, O
Clerbaux, B
De Lentdecker, G
Dero, V
Gay, APR
Hammad, GH
Hreus, T
Marage, PE
Thomas, L
Velde, CV
Vanlaer, P
Wickens, J
Costantini, S
Grunewald, M
Klein, B
Marinov, A
Ryckbosch, D
Thyssen, F
Tytgat, M
Vanelderen, L
Verwilligen, P
Walsh, S
Zaganidis, N
Basegmez, S
Bruno, G
Caudron, J
De Jeneret, JD
Delaere, C
Demin, P
Favart, D
Giammanco, A
Gregoire, G
Hollar, J
Lemaitre, V
Militaru, O
Ovyn, S
Pagano, D
Pin, A
Piotrzkowski, K
Quertenmont, L
Schul, N
Beliy, N
Caebergs, T
Daubie, E
Alves, GA
Damiao, DDJ
Pol, ME
Souza, MHG
Carvalho, W
Da Costa, EM
Martins, CDO
De Souza, SF
Mundim, L
Nogima, H
Oguri, V
Goicochea, JMO
Da Silva, WLP
Santoro, A
Do Amaral, SMS
Sznajder, A
De Araujo, FTD
Dias, FA
Dias, MAF
Tomei, TRFP
Gregores, EM
Marinho, F
Novaes, SF
Padula, SS
Darmenov, N
Dimitrov, L
Genchev, V
Iaydjiev, P
Piperov, S
Rodozov, M
Stoykova, S
Sultanov, G
Tcholakov, V
Trayanov, R
Vankov, I
Dyulendarova, M
Hadjiiska, R
Kozhuharov, V
Litov, L
Marinova, E
Mateev, M
Pavlov, B
Petkov, P
Bian, JG
Chen, GM
Chen, HS
Jiang, CH
Liang, D
Liang, S
Wang, J
Wang, J
Wang, X
Wang, Z
Yang, M
Zang, J
Zhang, Z
Ban, Y
Guo, S
Hu, Z
Li, W
Mao, Y
Qian, SJ
Teng, H
Zhu, B
Cabrera, A
Moreno, BG
Rios, AAO
Oliveros, AFO
Sanabria, JC
Godinovic, N
Lelas, D
Lelas, K
Plestina, R
Polic, D
Puljak, I
Antunovic, Z
Dzelalija, M
Brigljevic, V
Duric, S
Kadija, K
Morovic, S
Attikis, A
Fereos, R
Galanti, M
Mousa, J
Nicolaou, C
Ptochos, F
Razis, PA
Rykaczewski, H
Abdel-Basit, A
Assran, Y
Mahmoud, MA
Hektor, A
Kadastik, M
Kannike, K
Muentel, M
Raidal, M
Rebane, L
Azzolini, V
Eerola, P
Czellar, S
Harkonen, J
Heikkinen, A
Karimaki, V
Kinnunen, R
Klem, J
Kortelainen, MJ
Lampen, T
Lassila-Perini, K
Lehti, S
Linden, T
Luukka, P
Maenpaa, T
Tuominen, E
Tuominiemi, J
Tuovinen, E
Ungaro, D
Wendland, L
Banzuzi, K
Korpela, A
Tuuva, T
Sillou, D
Besancon, M
Dejardin, M
Denegri, D
Fabbro, B
Faure, JL
Ferri, F
Ganjour, S
Gentit, FX
Givernaud, A
Gras, P
de Monchenault, GH
Jarry, P
Locci, E
Malcles, J
Marionneau, M
Millischer, L
Rander, J
Rosowsky, A
Titov, M
Verrecchia, P
Baffioni, S
Bianchini, L
Bluj, M
Broutin, C
Busson, P
Charlot, C
Dobrzynski, L
de Cassagnac, RG
Haguenauer, M
Mine, P
Mironov, C
Ochando, C
Paganini, P
Sabes, D
Salerno, R
Sirois, Y
Thiebaux, C
Zabi, A
Agram, JL
Besson, A
Bloch, D
Bodin, D
Brom, JM
Cardaci, M
Conte, E
Drouhin, F
Ferro, C
Fontaine, JC
Gele, D
Goerlach, U
Greder, S
Juillot, P
Karim, M
Le Bihan, AC
Mikami, Y
Van Hove, P
Fassi, F
Mercier, D
Baty, C
Beaupere, N
Bedjidian, M
Bondu, O
Boudoul, G
Boumediene, D
Brun, H
Chanon, N
Chierici, R
Contardo, D
Depasse, P
El Mamouni, H
Falkiewicz, A
Fay, J
Gascon, S
Ille, B
Kurca, T
Le Grand, T
Lethuillier, M
Mirabito, L
Perries, S
Sordini, V
Tosi, S
Tschudi, Y
Verdier, P
Xiao, H
Roinishvili, V
Anagnostou, G
Edelhoff, M
Feld, L
Heracleous, N
Hindrichs, O
Jussen, R
Klein, K
Merz, J
Mohr, N
Ostapchuk, A
Perieanu, A
Raupach, F
Sammet, J
Schael, S
Sprenger, D
Weber, H
Weber, M
Wittmer, B
Ata, M
Bender, W
Erdmann, M
Frangenheim, J
Hebbeker, T
Hinzmann, A
Hoepfner, K
Hof, C
Klimkovich, T
Klingebiel, D
Kreuzer, P
Lanske, D
Magass, C
Masetti, G
Merschmeyer, M
Meyer, A
Papacz, P
Pieta, H
Reithler, H
Schmitz, SA
Sonnenschein, L
Steggemann, J
Teyssier, D
Bontenackels, M
Davids, M
Duda, M
Flugge, G
Geenen, H
Giffels, M
Ahmad, WH
Heydhausen, D
Kress, T
Kuessel, Y
Linn, A
Nowack, A
Perchalla, L
Pooth, O
Rennefeld, J
Sauerland, P
Stahl, A
Thomas, M
Tornier, D
Zoeller, MH
Martin, MA
Behrenhoff, W
Behrens, U
Bergholz, M
Borras, K
Campbell, A
Castro, E
Dammann, D
Eckerlin, G
Flossdorf, A
Flucke, G
Geiser, A
Glushkov, I
Hauk, J
Jung, H
Kasemann, M
Katkov, I
Katsas, P
Kleinwort, C
Kluge, H
Knutsson, A
Krucker, D
Kuznetsova, E
Lange, W
Lohmann, W
Mankel, R
Marienfeld, M
Melzer-Pellmann, IA
Meyer, AB
Mnich, J
Mussgiller, A
Olzem, J
Parenti, A
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CA CMS Collaboration
TI Search for Dijet Resonances in 7 TeV pp Collisions at CMS
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID P(P)OVER-BAR COLLISIONS; PHENOMENOLOGY; COLLIDER; PHYSICS
AB A search for narrow resonances in the dijet mass spectrum is performed using data corresponding to an integrated luminosity of 2.9 pb(-1) collected by the CMS experiment at the Large Hadron Collider. Upper limits at the 95% confidence level are presented on the product of the resonance cross section, branching fraction into dijets, and acceptance, separately for decays into quark-quark, quark-gluon, or gluon-gluon pairs. The data exclude new particles predicted in the following models at the 95% confidence level: string resonances, with mass less than 2.50 TeV, excited quarks, with mass less than 1.58 TeV, and axigluons, colorons, and E-6 diquarks, in specific mass intervals. This extends previously published limits on these models.
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[Abdel-Basit, A.; Assran, Y.; Mahmoud, M. A.] Acad Sci Res & Technol Arab Republ Egypt, Egyptian Network High Energy Phys, Cairo, Egypt.
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[Roinishvili, V.] Georgian Acad Sci, E Andronikashvili Inst Phys, GE-380060 Tbilisi, Rep of Georgia.
[Anagnostou, G.; Edelhoff, M.; Feld, L.; Heracleous, N.; Hindrichs, O.; Jussen, R.; Klein, K.; Merz, J.; Mohr, N.; Ostapchuk, A.; Perieanu, A.; Raupach, F.; Sammet, J.; Schael, S.; Sprenger, D.; Weber, H.; Weber, M.; Wittmer, B.] Univ Aachen, RWTH, Inst Phys 1, D-5100 Aachen, Germany.
[Ata, M.; Bender, W.; Erdmann, M.; Frangenheim, J.; Hebbeker, T.; Hinzmann, A.; Hoepfner, K.; Hof, C.; Klimkovich, T.; Klingebiel, D.; Kreuzer, P.; Lanske, D.; Magass, C.; Masetti, G.; Merschmeyer, M.; Meyer, A.; Papacz, P.; Pieta, H.; Reithler, H.; Schmitz, S. A.; Sonnenschein, L.; Steggemann, J.; Teyssier, D.] Univ Aachen, RWTH, Phys Inst 3 A, D-5100 Aachen, Germany.
[Bontenackels, M.; Davids, M.; Duda, M.; Fluegge, G.; Geenen, H.; Giffels, M.; Ahmad, W. Haj; Heydhausen, D.; Kress, T.; Kuessel, Y.; Linn, A.; Nowack, A.; Perchalla, L.; Pooth, O.; Rennefeld, J.; Sauerland, P.; Stahl, A.; Thomas, M.; Tornier, D.; Zoeller, M. H.] Univ Aachen, RWTH, Phys Inst 3 B, D-5100 Aachen, Germany.
[Martin, M. Aldaya; Behrenhoff, W.; Behrens, U.; Bergholz, M.; Borras, K.; Campbell, A.; Castro, E.; Dammann, D.; Eckerlin, G.; Flossdorf, A.; Flucke, G.; Geiser, A.; Glushkov, I.; Hauk, J.; Jung, H.; Kasemann, M.; Katkov, I.; Katsas, P.; Kleinwort, C.; Kluge, H.; Knutsson, A.; Kruecker, D.; Kuznetsova, E.; Lange, W.; Lohmann, W.; Mankel, R.; Marienfeld, M.; Melzer-Pellmann, I. -A.; Meyer, A. B.; Mnich, J.; Mussgiller, A.; Olzem, J.; Parenti, A.; Raspereza, A.; Raval, A.; Schmidt, R.; Schoerner-Sadenius, T.; Sen, N.; Stein, M.; Tomaszewska, J.; Volyanskyy, D.; Walsh, R.; Wissing, C.] DESY, Hamburg, Germany.
[Autermann, C.; Bobrovskyi, S.; Draeger, J.; Eckstein, D.; Enderle, H.; Gebbert, U.; Kaschube, K.; Kaussen, G.; Klanner, R.; Mura, B.; Naumann-Emme, S.; Nowak, F.; Pietsch, N.; Sander, C.; Schettler, H.; Schleper, P.; Schroeder, M.; Schum, T.; Schwandt, J.; Srivastava, A. K.; Stadie, H.; Steinbrueck, G.; Thomsen, J.; Wolf, R.] Univ Hamburg, Hamburg, Germany.
[Bauer, J.; Buege, V.; Cakir, A.; Chwalek, T.; Daeuwel, D.; De Boer, W.; Dierlamm, A.; Dirkes, G.; Feindt, M.; Gruschke, J.; Hackstein, C.; Hartmann, F.; Heinrich, M.; Held, H.; Hoffmann, K. H.; Honc, S.; Kuhr, T.; Martschei, D.; Mueller, S.; Mueller, Th.; Neuland, M. B.; Niegel, M.; Oberst, O.; Oehler, A.; Ott, J.; Peiffer, T.; Piparo, D.; Quast, G.; Rabbertz, K.; Ratnikov, F.; Renz, M.; Sabellek, A.; Saout, C.; Scheurer, A.; Schieferdecker, P.; Schilling, F. -P.; Schott, G.; Simonis, H. J.; Stober, F. M.; Troendle, D.; Wagner-Kuhr, J.; Zeise, M.; Zhukov, V.; Ziebarth, E. B.] Univ Karlsruhe, Inst Expt Kernphys, D-7500 Karlsruhe, Germany.
[Daskalakis, G.; Geralis, T.; Kesisoglou, S.; Kyriakis, A.; Loukas, D.; Manolakos, I.; Markou, A.; Markou, C.; Mavrommatis, C.; Petrakou, E.] Inst Nucl Phys Demokritos, Aghia Paraskevi, Greece.
[Gouskos, L.; Mertzimekis, T.; Panagiotou, A.; Sphicas, P.] Univ Athens, Athens, Greece.
[Evangelou, I.; Kokkas, P.; Manthos, N.; Papadopoulos, I.; Patras, V.; Triantis, F. A.] Univ Ioannina, GR-45110 Ioannina, Greece.
[Aranyi, A.; Bencze, G.; Boldizsar, L.; Debreczeni, G.; Hajdu, C.; Horvath, D.; Kapusi, A.; Krajczar, K.; Sikler, F.; Vesztergombi, G.] KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary.
[Horvath, D.; Beni, N.; Molnar, J.; Palinkas, J.; Szillasi, Z.; Veszpremi, V.] Inst Nucl Res ATOMKI, Debrecen, Hungary.
[Raics, P.; Trocsanyi, Z. L.; Ujvari, B.] Univ Debrecen, Debrecen, Hungary.
[Bansal, S.; Beri, S. B.; Bhatnagar, V.; Jindal, M.; Kaur, M.; Kohli, J. M.; Mehta, M. Z.; Nishu, N.; Saini, L. K.; Sharma, A.; Sharma, R.; Singh, A. P.; Singh, J. B.; Singh, S. P.] Panjab Univ, Chandigarh 160014, India.
[Ahuja, S.; Bhattacharya, S.; Chauhan, S.; Choudhary, B. C.; Gupta, P.; Jain, S.; Kumar, A.; Shivpuri, R. K.] Univ Delhi, Delhi 110007, India.
[Choudhury, R. K.; Dutta, D.; Kailas, S.; Kataria, S. K.; Mohanty, A. K.; Pant, L. M.; Shukla, P.; Suggisetti, P.] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India.
[Aziz, T.; Guchait, M.; Gurtu, A.; Maity, M.; Majumder, D.; Majumder, G.; Mazumdar, K.; Mohanty, G. B.; Saha, A.; Sudhakar, K.; Wickramage, N.] Tata Inst Fundamental Research, EHEP, Bombay, Maharashtra, India.
[Guchait, M.; Banerjee, S.; Dugad, S.; Mondal, N. K.] Tata Inst Fundamental Research, HECR, Bombay, Maharashtra, India.
[Hashemi, M.; Jafari, A.; Khakzad, M.] Inst Studies Theoret Phys & Math IPM, Tehran, Iran.
[Abbrescia, M.; Barbone, L.; Calabria, C.; Colaleo, A.; Creanza, D.; De Filippis, N.; De Palma, M.; Dimitrov, A.; Fedele, F.; Fiore, L.; Iaselli, G.; Lusito, L.; Maggi, G.; Maggi, M.; Manna, N.; Marangelli, B.; My, S.; Nuzzo, S.; Pacifico, N.; Pierro, G. A.; Pompili, A.; Pugliese, G.; Romano, F.; Roselli, G.; Selvaggi, G.; Silvestris, L.; Trentadue, R.; Tupputi, S.; Zito, G.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Abbrescia, M.; Barbone, L.; Calabria, C.; Creanza, D.; De Filippis, N.; De Palma, M.; Iaselli, G.; Lusito, L.; Manna, N.; Marangelli, B.; Nuzzo, S.; Pacifico, N.; Pompili, A.; Pugliese, G.; Roselli, G.; Selvaggi, G.; Tupputi, S.] Univ Bari, Bari, Italy.
[Maggi, G.; My, S.; Romano, F.] Politecn Bari, Bari, Italy.
[Abbiendi, G.; Benvenuti, A. C.; Bonacorsi, D.; Braibant-Giacomelli, S.; Capiluppi, P.; Castro, A.; Cavallo, F. R.; Cuffiani, M.; Dallavalle, G. M.; Fabbri, F.; Fanfani, A.; Fasanella, D.; Giacomelli, P.; Giunta, M.; Grandi, C.; Marcellini, S.; Meneghelli, M.; Montanari, A.; Navarria, F. L.; Odorici, F.; Perrotta, A.; Primavera, F.; Rossi, A. M.; Rovelli, T.; Siroli, G.] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy.
[Braibant-Giacomelli, S.; Capiluppi, P.; Castro, A.; Cuffiani, M.; Fanfani, A.; Meneghelli, M.; Navarria, F. L.; Rossi, A. M.; Rovelli, T.; Siroli, G.] Univ Bologna, Bologna, Italy.
[Albergo, S.; Cappello, G.; Chiorboli, M.; Costa, S.; Tricomi, A.; Tuve, C.] Ist Nazl Fis Nucl, Sez Catania, I-95129 Catania, Italy.
[Albergo, S.; Cappello, G.; Chiorboli, M.; Costa, S.; Tricomi, A.] Univ Catania, Catania, Italy.
[Barbagli, G.; Broccolo, G.; Ciulli, V.; Civinini, C.; D'Alessandro, R.; Focardi, E.; Frosali, S.; Gallo, E.; Lenzi, P.; Meschini, M.; Paoletti, S.; Sguazzoni, G.; Tropiano, A.; Benussi, L.] Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy.
[Broccolo, G.; D'Alessandro, R.; Focardi, E.; Frosali, S.; Lenzi, P.; Benussi, L.] Univ Florence, Florence, Italy.
[Bianco, S.; Colafranceschi, S.; Fabbri, F.; Piccolo, D.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[Fabbricatore, P.; Musenich, R.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
[Benaglia, A.; Cerati, G. B.; De Guio, F.; Di Matteo, L.; Ghezzi, A.; Govoni, P.; Malberti, M.; Malvezzi, S.; Martelli, A.; Massironi, A.; Menasce, D.; Miccio, V.; Moroni, L.; Paganoni, M.; Pedrini, D.; Ragazzi, S.; Redaelli, N.; Sala, S.; de Fatis, T. Tabarelli; Tancini, V.] Ist Nazl Fis Nucl, Sez Milano Biccoca, I-20133 Milan, Italy.
[Benaglia, A.; Cerati, G. B.; De Guio, F.; Di Matteo, L.; Ghezzi, A.; Govoni, P.; Malberti, M.; Martelli, A.; Massironi, A.; Miccio, V.; Paganoni, M.; Ragazzi, S.; de Fatis, T. Tabarelli; Tancini, V.] Univ Milano Bicocca, Milan, Italy.
[Buontempo, S.; Montoya, C. A. Carrillo; Cimmino, A.; De Cosa, A.; De Gruttola, M.; Fabozzi, F.; Iorio, A. O. M.; Lista, L.; Noli, P.; Paolucci, P.] Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy.
[Cimmino, A.; De Cosa, A.; De Gruttola, M.; Noli, P.] Univ Naples Federico II, Naples, Italy.
[Azzi, P.; Bacchetta, N.; Bellan, P.; Bellato, M.; Biasotto, M.; Bisello, D.; Branca, A.; Carlin, R.; Checchia, P.; De Mattia, M.; Dorigo, T.; Gasparini, F.; Giubilato, P.; Gresele, A.; Lacaprara, S.; Lazzizzera, I.; Margoni, M.; Maron, G.; Meneguzzo, A. T.; Nespolo, M.; Passaseo, M.; Perrozzi, L.; Pozzobon, N.; Ronchese, P.; Simonetto, F.; Torassa, E.; Tosi, M.; Triossi, A.; Vanini, S.; Zotto, P.] Ist Nazl Fis Nucl, Sez Padova, Padua, Italy.
[Bellan, P.; Bisello, D.; Carlin, R.; De Mattia, M.; Gasparini, F.; Giubilato, P.; Margoni, M.; Meneguzzo, A. T.; Pozzobon, N.; Ronchese, P.; Simonetto, F.; Tosi, M.; Vanini, S.; Zotto, P.] Univ Padua, Padua, Italy.
[Gresele, A.; Lazzizzera, I.] Univ Trento, Padua, Italy.
[Baesso, P.; Berzano, U.; Riccardi, C.; Torre, P.; Vitulo, P.; Viviani, C.] Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy.
[Baesso, P.; Riccardi, C.; Torre, P.; Vitulo, P.; Viviani, C.] Univ Pavia, I-27100 Pavia, Italy.
[Biasini, M.; Bilei, G. M.; Caponeri, B.; Fano, L.; Lariccia, P.; Lucaroni, A.; Mantovani, G.; Menichelli, M.; Nappi, A.; Santocchia, A.; Servoli, L.; Taroni, S.; Valdata, M.; Volpe, R.] Univ Perugia, INFN, Sez Perugia, I-06100 Perugia, Italy.
[Azzurri, P.; Bagliesi, G.; Bernardini, J.; Boccali, T.; Castaldi, R.; D'Agnolo, R. T.; Dell'Orso, R.; Fiori, F.; Foa, L.; Giassi, A.; Kraan, A.; Ligabue, F.; Lomtadze, T.; Martini, L.; Messineo, A.; Palla, F.; Palmonari, F.; Sarkar, S.; Segneri, G.; Serban, A. T.; Spagnolo, P.; Tenchini, R.; Tonelli, G.; Venturi, A.; Verdini, P. G.] Ist Nazl Fis Nucl, Sez Pisa, Pisa, Italy.
[Bernardini, J.; Fiori, F.; Messineo, A.] Univ Pisa, Pisa, Italy.
[Azzurri, P.; D'Agnolo, R. T.; Foa, L.; Ligabue, F.; Sarkar, S.; Tonelli, G.] Scuola Normale Super Pisa, Pisa, Italy.
[Barone, L.; Cavallari, F.; Del Re, D.; Di Marco, E.; Diemoz, M.; Franci, D.; Grassi, M.; Longo, E.; Organtini, G.; Palma, A.; Pandolfi, F.; Paramatti, R.; Rahatlou, S.] Ist Nazl Fis Nucl, Sez Roma, Rome, Italy.
[Colafranceschi, S.] Univ Roma La Sapienza, Fac Ingn, Rome, Italy.
[Amapane, N.; Arcidiacono, R.; Argiro, S.; Arneodo, M.; Biino, C.; Botta, C.; Cartiglia, N.; Castello, R.; Costa, M.; Demaria, N.; Graziano, A.; Mariotti, C.; Marone, M.; Maselli, S.; Migliore, E.; Mila, G.; Monaco, V.; Musich, M.; Obertino, M. M.; Pastrone, N.; Pelliccioni, M.; Romero, A.; Ruspa, M.; Sacchi, R.; Sola, V.; Solano, A.; Staiano, A.; Trocino, D.; Pereira, A. Vilela] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy.
[Amapane, N.; Argiro, S.; Botta, C.; Castello, R.; Costa, M.; Graziano, A.; Marone, M.; Migliore, E.; Mila, G.; Monaco, V.; Musich, M.; Pelliccioni, M.; Romero, A.; Sacchi, R.; Sola, V.; Solano, A.; Trocino, D.; Pereira, A. Vilela] Univ Turin, Turin, Italy.
[Arcidiacono, R.; Arneodo, M.; Obertino, M. M.; Ruspa, M.] Univ Piemonte Orientale Novara, Turin, Italy.
[Ambroglini, F.; Belforte, S.; Cossutti, F.; Della Ricca, G.; Gobbo, B.; Montanino, D.; Penzo, A.] Ist Nazl Fis Nucl, Sez Trieste, Trieste, Italy.
[Ambroglini, F.; Della Ricca, G.; Montanino, D.] Univ Trieste, Trieste, Italy.
[Heo, S. G.] Kangwon Natl Univ, Chunchon, South Korea.
[Chang, S.; Chung, J.; Kim, D. H.; Kim, G. N.; Kim, J. E.; Kong, D. J.; Park, H.; Son, D.; Son, D. C.] Kyungpook Natl Univ, Taegu, South Korea.
[Kim, Zero; Kim, J. Y.; Song, S.] Chonnam Natl Univ, Inst Universe & Elementary Particles, Kwangju, South Korea.
[Choi, S.; Hong, B.; Jo, M.; Kim, H.; Kim, J. H.; Kim, T. J.; Lee, K. S.; Moon, D. H.; Park, S. K.; Rhee, H. B.; Seo, E.; Shin, S.; Sim, K. S.] Korea Univ, Seoul, South Korea.
[Choi, M.; Kang, S.; Kim, H.; Park, C.; Park, I. C.; Park, S.; Ryu, G.] Univ Seoul, Seoul, South Korea.
[Choi, Y.; Choi, Y. K.; Goh, J.; Lee, J.; Lee, S.; Seo, H.; Yu, I.] Sungkyunkwan Univ, Suwon, South Korea.
[Bilinskas, M. J.; Grigelionis, I.; Janulis, M.; Martisiute, D.; Petrov, P.; Sabonis, T.] Vilnius Univ, Vilnius, Lithuania.
[Valdez, H. Castilla; Burelo, E. De la Cruz; Lopez-Fernandez, R.; Hernandes, A. Sanchez; Villasenor-Cendejas, L. M.] IPN, Ctr Invest & Estudios Avanzados, Mexico City 07738, DF, Mexico.
[Moreno, S. Carrillo; Valencia, F. Vazquez] Univ Iberoamer, Mexico City, DF, Mexico.
[Ibarguen, H. A. Salazar] Benemerita Univ Autonoma Puebla, Puebla, Mexico.
[Linares, E. Casimiro; Pineda, A. Morelos; Reyes-Santos, M. A.] Univ Autonoma San Luis Potosi, San Luis Potosi, Mexico.
[Allfrey, P.; Krofcheck, D.; Tam, J.] Univ Auckland, Auckland 1, New Zealand.
[Butler, P. H.; Doesburg, R.; Silverwood, H.] Univ Canterbury, Christchurch 1, New Zealand.
[Ahmad, M.; Ahmed, I.; Asghar, M. I.; Hoorani, H. R.; Khan, W. A.; Khurshid, T.; Qazi, S.] Quaid I Azam Univ, Natl Ctr Phys, Islamabad, Pakistan.
[Cwiok, M.; Dominik, W.; Doroba, K.; Kalinowski, A.; Konecki, M.; Krolikowski, J.] Univ Warsaw, Inst Expt Phys, Warsaw, Poland.
[Bluj, M.; Frueboes, T.; Gokieli, R.; Gorski, M.; Kazana, M.; Nawrocki, K.; Szleper, M.; Wrochna, G.; Zalewski, P.] Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland.
[Almeida, N.; David, A.; Faccioli, P.; Ferreira Parracho, P. G.; Gallinaro, M.; Martins, P.; Mini, G.; Musella, P.; Nayak, A.; Raposo, L.; Ribeiro, P. Q.; Seixas, J.; Silva, P.; Soares, D.; Varela, J.; Woehri, H. K.] Lab Instrumentacao & Fis Expt Particulas, Lisbon, Portugal.
[Belotelov, I.; Bunin, P.; Finger, M.; Finger, M., Jr.; Golutvin, I.; Kamenev, A.; Karjavin, V.; Kozlov, G.; Lanev, A.; Moisenz, P.; Palichik, V.; Perelygin, V.; Shmatov, S.; Smirnov, V.; Volodko, A.; Zarubin, A.] Joint Inst Nucl Res, Dubna, Russia.
[Bondar, N.; Golovtsov, V.; Ivanov, Y.; Kim, V.; Levchenko, P.; Murzin, V.; Oreshkin, V.; Smirnov, I.; Sulimov, V.; Uvarov, L.; Vavilov, S.; Vorobyev, A.] Petersburg Nucl Phys Inst, St Petersburg, Russia.
[Andreev, Yu.; Gninenko, S.; Golubev, N.; Kirsanov, M.; Krasnikov, N.; Matveev, V.; Pashenkov, A.; Toropin, A.; Troitsky, S.] Russian Acad Sci, Inst Nucl Res, Moscow, Russia.
[Epshteyn, V.; Gavrilov, V.; Kaftanov, V.; Kossov, M.; Krokhotin, A.; Kuleshov, S.; Lychkovskaya, N.; Oulianov, A.; Safronov, G.; Semenov, S.; Shreyber, I.; Stolin, V.; Vlasov, E.; Zhokin, A.; Starodumov, A.; A. Nikitenko] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Zhukov, V.; Boos, E.; Dubinin, M.; Dudko, L.; Ershov, A.; Gribushin, A.; Kodolova, O.; Lokhtin, I.; Obraztsov, S.; Petrushanko, S.; Sarycheva, L.; Savrin, V.; Snigirev, A.] Moscow MV Lomonosov State Univ, Moscow, Russia.
[Bondar, N.; Golovtsov, V.; Ivanov, Y.; Kim, V.; Levchenko, P.; Murzin, V.; Oreshkin, V.; Smirnov, I.; Sulimov, V.; Uvarov, L.; Vavilov, S.; Vorobyev, A.] PN Lebedev Phys Inst, Moscow, Russia.
[Azhgirey, I.; Bitioukov, S.; Grishin, V.; Kachanov, V.; Konstantinov, D.; Krychkine, V.; Petrov, V.; Ryutin, R.; Slabospitsky, S.; Sobol, A.; Tourtchanovitch, L.; Troshin, S.; Tyurin, N.; Uzunian, A.; Volkov, A.] Inst High Energy Phys, State Res Ctr Russian Federat, Protvino, Russia.
[Adzic, P.; Djordjevic, M.; Krpic, D.; Maletic, D.; Milosevic, J.; Puzovic, J.; Milenovic, P.] Univ Belgrade, Fac Phys, Belgrade 11001, Serbia.
[Adzic, P.; Djordjevic, M.; Krpic, D.; Maletic, D.; Milosevic, J.; Puzovic, J.; Milenovic, P.] Vinca Inst Nucl Sci, Belgrade, Serbia.
[Aguilar-Benitez, M.; Alcaraz Maestre, J.; Arce, P.; Battilana, C.; Calvo, E.; Cepeda, M.; Cerrada, M.; Colino, N.; De la Cruz, B.; Diez Pardos, C.; Fernandez Bedoya, C.; Fernandez Ramos, J. P.; Ferrando, A.; Flix, J.; Fouz, M. C.; Garcia-Abia, P.; Lopez, O. Gonzalez; Lopez, S. Goy; Hernandez, J. M.; Josa, M. I.; Merino, G.; Puerta Pelayo, J.; Redondo, I.; Romero, L.; Santaolalla, J.; Willmott, C.] CIEMAT, E-28040 Madrid, Spain.
[Albajar, C.; Codispoti, G.; de Troconiz, J. F.] Univ Autonoma Madrid, Madrid, Spain.
[Cuevas, J.; Menendez, J. Fernandez; Folgueras, S.; Caballero, I. Gonzalez; Iglesias, L. Lloret; Garcia, J. M. Vizan] Univ Oviedo, Oviedo, Spain.
[Cabrillo, I. J.; Calderon, A.; Llatas, M. Chamizo; Chuang, S. H.; Campderros, J. Duarte; Felcini, M.; Fernandez, M.; Gomez, G.; Sanchez, J. Gonzalez; Suarez, R. Gonzalez; Jorda, C.; Pardo, P. Lobelle; Virto, A. Lopez; Marco, J.; Marco, R.; Rivero, C. Martinez; Matorras, F.; Gomez, J. Piedra; Rodrigo, T.; Jimeno, A. Ruiz; Scodellaro, L.; Sanudo, M. Sobron; Vila, I.; Cortabitarte, R. Vilar; del Arbol, P. Martinez Ruiz] Univ Cantabria, CSIC, Inst Fis Cantabria IFCA, E-39005 Santander, Spain.
[Abbaneo, D.; Auffray, E.; Baillon, P.; Ball, A. H.; Barney, D.; Beaudette, F.; Bell, A. J.; Benedetti, D.; Bernet, C.; Bhattacharyya, A. K.; Bialas, W.; Bloch, P.; Bocci, A.; Bolognesi, S.; Breuker, H.; Brona, G.; Bunkowski, K.; Camporesi, T.; Cano, E.; Cattai, A.; Cerminara, G.; Christiansen, T.; Perez, J. A. Coarasa; Covarelli, R.; Cure, B.; D'Enterria, D.; Dahms, T.; De Roeck, A.; Elliott-Peisert, A.; Funk, W.; Gaddi, A.; Gennai, S.; Georgiou, G.; Gerwig, H.; Gigi, D.; Gill, K.; Giordano, D.; Glege, F.; Garrido, R. Gomez-Reino; Gouzevitch, M.; Gowdy, S.; Guiducci, L.; Hansen, M.; Harvey, J.; Hegeman, J.; Hegner, B.; Henderson, C.; Hoffmann, H. F.; Honma, A.; Innocente, V.; Janot, P.; Karavakis, E.; Lecoq, P.; Leonidopoulos, C.; Lourenc, C.; Macpherson, A.; Maeki, T.; Malgeri, L.; Mannelli, M.; Masetti, L.; Meijers, F.; Mersi, S.; Meschi, E.; Moser, R.; Mozer, M. U.; Mulders, M.; Nesvold, E.; Orsini, L.; Perez, E.; Petrilli, A.; Pfeiffer, A.; Pierini, M.; Pimiae, M.; Polese, G.; Racz, A.; Rolandi, G.; Rovelli, C.; Rovere, M.; Sakulin, H.; Schaefer, C.; Schwick, C.; Segoni, I.; Sharma, A.; Siegrist, P.; Simon, M.; Sphicas, P.; Spiga, D.; Spiropulu, M.; Stoeckli, F.; Stoye, M.; Tropea, P.; Tsirou, A.; Veres, G. I.; Vichoudis, P.; Voutilainen, M.; Zeuner, W. D.] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland.
[Bertl, W.; Deiters, K.; Erdmann, W.; Gabathuler, K.; Horisberger, R.; Ingram, Q.; Kaestli, H. C.; Koenig, S.; Kotlinski, D.; Langenegger, U.; Meier, F.; Renker, D.; Rohe, T.; Sibille, J.; Starodumov, A.; Caminada, L.; Marchica, C.] Paul Scherrer Inst, Villigen, Switzerland.
[Caminada, L.; Chen, Z.; Cittolin, S.; Dissertori, G.; Dittmar, M.; Eugster, J.; Freudenreich, K.; Grab, C.; Herve, A.; Hintz, W.; Lecomte, P.; Lustermann, W.; Marchica, C.; del Arbol, P. Martinez Ruiz; Meridiani, P.; Milenovic, P.; Moortgat, F.; Nardulli, A.; Nef, P.; Nessi-Tedaldi, F.; Pape, L.; Pauss, F.; Punz, T.; Rizzi, A.; Ronga, F. J.; Sala, L.; Sanchez, A. K.; Sawley, M. -C.; Stieger, B.; Tauscher, L.; Thea, A.; Theofilatos, K.; Treille, D.; Urscheler, C.; Wallny, R.; Weber, M.; Wehrli, L.; Weng, J.] Swiss Fed Inst Technol, Inst Particle Phys, Zurich, Switzerland.
[Aguilo, E.; Amsler, C.; Chiochia, V.; De Visscher, S.; Favaro, C.; Rikova, M. Ivova; Jaeger, A.; Mejias, B. Millan; Regenfus, C.; Robmann, P.; Rommerskirchen, T.; Schmidt, A.; Snoek, H.; Wilke, L.] Univ Zurich, Zurich, Switzerland.
[Chang, Y. H.; Chen, K. H.; Chen, W. T.; Dutta, S.; Go, A.; Kuo, C. M.; Li, S. W.; Lin, W.; Liu, M. H.; Liu, Z. K.; Lu, Y. J.; Wu, J. H.; Yu, S. S.] Natl Cent Univ, Chungli, Taiwan.
[Bartalini, P.; Chang, P.; Chang, Y. H.; Chang, Y. W.; Chao, Y.; Chen, K. F.; Hou, W. -S.; Hsiung, Y.; Kao, K. Y.; Lei, Y. J.; Lu, R. -S.; Shiu, J. G.; Tzeng, Y. M.; Wang, M.; Wei, J. T.] Natl Taiwan Univ, Taipei 10764, Taiwan.
[Adiguzel, A.; Bakirci, M. N.; Cerci, S.; Demir, Z.; Dozen, C.; Dumanoglu, I.; Eskut, E.; Girgis, S.; Goekbulut, G.; Gueler, Y.; Gurpinar, E.; Hos, I.; Kangal, E. E.; Karaman, T.; Topaksu, A. Kayis; Nart, A.; Oenenguet, G.; Ozdemir, K.; Ozturk, S.; Polatoez, A.; Sogut, K.; Tali, B.; Topakli, H.; Uzun, D.; Vergili, L. N.; Vergili, M.; Zorbilmez, C.] Cukurova Univ, Adana, Turkey.
[Akin, I. V.; Aliev, T.; Bilmis, S.; Deniz, M.; Gamsizkan, H.; Guler, A. M.; Ocalan, K.; Ozpineci, A.; Serin, M.; Sever, R.; Surat, U. E.; Yildirim, E.; Zeyrek, M.] Middle E Tech Univ, Dept Phys, TR-06531 Ankara, Turkey.
[Deliomeroglu, M.; Demir, D.; Guelmez, E.; Halu, A.; Isildak, B.; Kaya, M.; Kaya, O.; Oezbek, M.; Ozkorucuklu, S.; Sonmez, N.] Bogazici Univ, Istanbul, Turkey.
[Levchuk, L.] Kharkov Inst Phys & Technol, Natl Sci Ctr, Kharkov, Ukraine.
[Bell, P.; Bostock, F.; Brooke, J. J.; Cheng, T. L.; Cussans, D.; Frazier, R.; Goldstein, J.; Grimes, M.; Hansen, M.; Heath, G. P.; Heath, H. F.; Huckvale, B.; Jackson, J.; Kreczko, L.; Metson, S.; Newbold, D. M.; Nirunpong, K.; Poll, A.; Smith, V. J.; Ward, S.] Univ Bristol, Bristol, Avon, England.
[Newbold, D. M.; Basso, L.; Bell, K. W.; Belyaev, A.; Brew, C.; Brown, R. M.; Camanzi, B.; Cockerill, D. J. A.; Coughlan, J. A.; Harder, K.; Harper, S.; Kennedy, B. W.; Olaiya, E.; Petyt, D.; Radburn-Smith, B. C.; Shepherd-Themistocleous, C. H.; Tomalin, I. R.; Womersley, W. J.; Worm, S. D.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Bainbridge, R.; Ball, G.; Ballin, J.; Beuselinck, R.; Buchmuller, O.; Colling, D.; Cripps, N.; Cutajar, M.; Davies, G.; Della Negra, M.; Foudas, C.; Fulcher, J.; Futyan, D.; Bryer, A. Guneratne; Hall, G.; Hatherell, Z.; Hays, J.; Iles, G.; Karapostoli, G.; Lyons, L.; Magnan, A. -M.; Marrouche, J.; Nandi, R.; Nash, J.; A. Nikitenko; Papageorgiou, A.; Pesaresi, M.; Petridis, K.; Pioppi, M.; Raymond, D. M.; Rompotis, N.; Rose, A.; Ryan, M. J.; Seez, C.; Sharp, P.; Sparrow, A.; Tapper, A.; Tourneur, S.; Acosta, M. Vazquez; Virdee, T.; Wakefield, S.; Wardrope, D.; Whyntie, T.] Univ London Imperial Coll Sci Technol & Med, London, England.
[Barrett, M.; Chadwick, M.; Cole, J. E.; Hobson, P. R.; Khan, A.; Kyberd, P.; Leslie, D.; Martin, W.; Reid, I. D.; Teodorescu, L.] Brunel Univ, Uxbridge UB8 3PH, Middx, England.
[Hatakeyama, K.] Baylor Univ, Waco, TX 76798 USA.
[Bose, T.; Jarrin, E. Carrera; Clough, A.; Fantasia, C.; Heister, A.; John, J. St.; Lawson, P.; Lazic, D.; Rohlf, J.; Sperka, D.; Sulak, L.] Boston Univ, Boston, MA 02215 USA.
[Andrea, J.; Avetisyan, A.; Bhattacharya, S.; Chou, J. P.; Cutts, D.; Esen, S.; Ferapontov, A.; Heintz, U.; Jabeen, S.; Kukartsev, G.; Landsberg, G.; Narain, M.; Nguyen, D.; Segala, M.; Speer, T.; Tsang, K. V.] Brown Univ, Providence, RI 02912 USA.
[Borgia, M. A.; Breedon, R.; Sanchez, M. Calderon De la Barca; Cebra, D.; Chertok, M.; Conway, J.; Cox, P. T.; Dolen, J.; Erbacher, R.; Friis, E.; Ko, W.; Kopecky, A.; Lander, R.; Liu, H.; Maruyama, S.; Miceli, T.; Nikolic, M.; Pellett, D.; Robles, J.; Schwarz, T.; Searle, M.; Smith, J.; Squires, M.; Tripathi, M.; Sierra, R. Vasquez; Veelken, C.] Univ Calif Davis, Davis, CA 95616 USA.
[Wallny, R.; Andreev, V.; Arisaka, K.; Cline, D.; Cousins, R.; Deisher, A.; Duris, J.; Erhan, S.; Farrell, C.; Hauser, J.; Ignatenko, M.; Jarvis, C.; Plager, C.; Rakness, G.; Schlein, P.; Tucker, J.; Valuev, V.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA.
[Babb, J.; Clare, R.; Ellison, J.; Gary, J. W.; Giordano, F.; Hanson, G.; Jeng, G. Y.; Kao, S. C.; Liu, F.; Liu, H.; Luthra, A.; Nguyen, H.; Pasztor, G.; Satpathy, A.; Shen, B. C.; Stringer, R.; Sturdy, J.; Sumowidagdo, S.; Wilken, R.; Wimpenny, S.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Andrews, W.; Branson, J. G.; Dusinberre, E.; Evans, D.; Golf, F.; Holzner, A.; Kelley, R.; Lebourgeois, M.; Letts, J.; Mangano, B.; Muelmenstaedt, J.; Padhi, S.; Palmer, C.; Petrucciani, G.; Pi, H.; Pieri, M.; Ranieri, R.; Sani, M.; Sharma, V.; Simon, S.; Tu, Y.; Vartak, A.; Wuerthwein, F.; Yagil, A.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Barge, D.; Bellan, R.; Campagnari, C.; D'Alfonso, M.; Danielson, T.; Geffert, P.; Incandela, J.; Justus, C.; Kalavase, P.; Koay, S. A.; Kovalskyi, D.; Krutelyov, V.; Lowette, S.; Mccoll, N.; Pavlunin, V.; Rebassoo, F.; Ribnik, J.; Richman, J.; Rossin, R.; Stuart, D.; To, W.; Vlimant, J. R.; Witherell, M.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Bornheim, A.; Bunn, J.; Chen, Y.; Gataullin, M.; Kcira, D.; Litvine, V.; Ma, Y.; Mott, A.; Newman, H. B.; Rogan, C.; Shin, K.; Timciuc, V.; Traczyk, P.; Veverka, J.; Wilkinson, R.; Yang, Y.; Zhu, R. Y.] CALTECH, Pasadena, CA 91125 USA.
[Akgun, B.; Calamba, A.; Carroll, R.; Ferguson, T.; Iiyama, Y.; Jang, D. W.; Jun, S. Y.; Liu, Y. F.; Paulini, M.; Russ, J.; Terentyev, N.; Vogel, H.; Vorobiev, I.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Cumalat, J. P.; Dinardo, M. E.; Drell, B. R.; Edelmaier, C. J.; Ford, W. T.; Heyburn, B.; Lopez, E. Luiggi; Nauenberg, U.; Smith, J. G.; Stenson, K.; Ulmer, K. A.; Wagner, S. R.; Zang, S. L.] Univ Colorado, Boulder, CO 80309 USA.
[Agostino, L.; Alexander, J.; Blekman, F.; Chatterjee, A.; Das, S.; Eggert, N.; Fields, L. J.; Gibbons, L. K.; Heltsley, B.; Henriksson, K.; Hopkins, W.; Khukhunaishvili, A.; Kreis, B.; Kuznetsov, V.; Liu, Y.; Kaufman, G. Nicolas; Patterson, J. R.; Puigh, D.; Riley, D.; Ryd, A.; Saelim, M.; Shi, X.; Sun, W.; Teo, W. D.; Thom, J.; Thompson, J.; Vaughan, J.; Weng, Y.; Winstrom, L.; Wittich, P.] Cornell Univ, Ithaca, NY 14853 USA.
[Biselli, A.; Cirino, G.; Winn, D.] Fairfield Univ, Fairfield, CT 06824 USA.
[Abdullin, S.; Albrow, M.; Anderson, J.; Apollinari, G.; Atac, M.; Bakken, J. A.; Banerjee, S.; Bauerdick, L. A. T.; Beretvas, A.; Berryhill, J.; Bhat, P. C.; Bloch, I.; Borcherding, F.; Burkett, K.; Butler, J. N.; Chetluru, V.; Cheung, H. W. K.; Chlebana, F.; Cihangir, S.; Demarteau, M.; Eartly, D. P.; Elvira, V. D.; Fisk, I.; Freeman, J.; Gao, Y.; Gottschalk, E.; Green, D.; Gunthoti, K.; Gutsche, O.; Hahn, A.; Hanlon, J.; Harris, R. M.; Hirschauer, J.; Hooberman, B.; James, E.; Jensen, H.; Johnson, M.; Joshi, U.; Khatiwada, R.; Kilminster, B.; Klima, B.; Kousouris, K.; Kunori, S.; Kwan, S.; Limon, P.; Lipton, R.; Lykken, J.; Maeshima, K.; Marraffino, J. M.; Mason, D.; McBride, P.; McCauley, T.; Miao, T.; Mishra, K.; Mrenna, S.; Musienko, Y.; Newman-Holmes, C.; O'Dell, V.; Popescu, S.; Pordes, R.; Prokofyev, O.; Saoulidou, N.; Sexton-Kennedy, E.; Sharma, S.; Soha, A.; Spalding, W. J.; Spiegel, L.; Tan, P.; Taylor, L.; Tkaczyk, S.; Uplegger, L.; Vaandering, E. W.; Vidal, R.; Whitmore, J.; Wu, W.; Yang, F.; Yumiceva, F.; Yun, J. C.; Askew, A.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Gomez, J. Piedra; Acosta, D.; Avery, P.; Bourilkov, D.; Chen, M.; Di Giovanni, G. P.; Dobur, D.; Drozdetskiy, A.; Field, R. D.; Fisher, M.; Fu, Y.; Furic, I. K.; Gartner, J.; Goldberg, S.; Kim, B.; Klimenko, S.; Konigsberg, J.; Korytov, A.; Kotov, K.; Kropivnitskaya, A.; Kypreos, T.; Matchev, K.; Mitselmakher, G.; Muniz, L.; Pakhotin, Y.; Petterson, M.; Prescott, C.; Remington, R.; Schmitt, M.; Scurlock, B.; Sellers, P.; Snowball, M.; Wang, D.; Yelton, J.; Zakaria, M.] Univ Florida, Gainesville, FL 32611 USA.
[Ceron, C.; Gaultney, V.; Kramer, L.; Lebolo, L. M.; Linn, S.; Markowitz, P.; Martinez, G.; Mesa, D.; Rodriguez, J. L.] Florida Int Univ, Miami, FL 33199 USA.
[Adams, T.; Askew, A.; Bochenek, J.; Chen, J.; Diamond, B.; Gleyzer, S. V.; Haas, J.; Hagopian, S.; Hagopian, V.; Jenkins, M.; Johnson, K. F.; Prosper, H.; Sekmen, S.; Veeraraghavan, V.] Florida State Univ, Tallahassee, FL 32306 USA.
[Baarmand, M. M.; Dorney, B.; Guragain, S.; Hohlmann, M.; Kalakhety, H.; Mermerkaya, H.; Ralich, R.; Vodopiyanov, I.] Florida Inst Technol, Melbourne, FL 32901 USA.
[Adams, M. R.; Anghel, I. M.; Apanasevich, L.; Bai, Y.; Bazterra, V. E.; Betts, R. R.; Callner, J.; Cavanaugh, R.; Dragoiu, C.; Garcia-Solis, E. J.; Gerber, C. E.; Hofman, D. J.; Khalatyan, S.; Lacroix, F.; O'Brien, C.; Silvestre, C.; Smoron, A.; Strom, D.; Varelas, N.] Univ Illinois, Chicago, IL 60607 USA.
[Akgun, U.; Albayrak, E. A.; Bilki, B.; Cankocak, K.; Clarida, W.; Duru, F.; Lae, C. K.; McCliment, E.; Merlo, J. -P.; Mestvirishvili, A.; Moeller, A.; Nachtman, J.; Newsom, C. R.; Norbeck, E.; Olson, J.; Onel, Y.; Ozok, F.; Sen, S.; Wetzel, J.; Yetkin, T.; Yi, K.] Univ Iowa, Iowa City, IA 52242 USA.
[Barnett, B. A.; Blumenfeld, B.; Bonato, A.; Eskew, C.; Fehling, D.; Giurgiu, G.; Gritsan, A. V.; Guo, Z. J.; Hu, G.; Maksimovic, P.; Rappoccio, S.; Swartz, M.; Tran, N. V.; Whitbeck, A.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
[Baringer, P.; Bean, A.; Benelli, G.; Grachov, O.; Murray, M.; Noonan, D.; Radicci, V.; Sanders, S.; Wood, J. S.; Zhukova, V.] Univ Kansas, Lawrence, KS 66045 USA.
[Bandurin, D.; Bolton, T.; Chakaberia, I.; Ivanov, A.; Makouski, M.; Maravin, Y.; Shrestha, S.; Svintradze, I.; Wan, Z.] Kansas State Univ, Manhattan, KS 66506 USA.
[Gronberg, J.; Lange, D.; Wright, D.] Lawrence Livermore Natl Lab, Berkeley, CA 94720 USA.
[Baden, A.; Boutemeur, M.; Eno, S. C.; Ferencek, D.; Gomez, J. A.; Hadley, N. J.; Kellogg, R. G.; Kirn, M.; Lu, Y.; Mignerey, A. C.; Rossato, K.; Rumerio, P.; Santanastasio, F.; Skuja, A.; Temple, J.; Tonjes, M. B.; Tonwar, S. C.; Twedt, E.] Univ Maryland, College Pk, MD 20742 USA.
[Alver, B.; Bauer, G.; Bendavid, J.; Busza, W.; Butz, E.; Cali, I. A.; Chan, M.; Dutta, V.; Everaerts, P.; Ceballos, G. Gomez; Goncharov, M.; Hahn, K. A.; Harris, P.; Kim, Y.; Klute, M.; Lee, Y. -J.; Li, W.; Loizides, C.; Luckey, P. D.; Ma, T.; Nahn, S.; Paus, C.; Roland, C.; Roland, G.; Rudolph, M.; Stephans, G. S. F.; Sumorok, K.; Sung, K.; Wenger, E. A.; Wyslouch, B.; Xie, S.; Yang, M.; Yilmaz, Y.; Yoon, A. S.; Zanetti, M.] MIT, Cambridge, MA 02139 USA.
[Cole, P.; Cooper, S. I.; Cushman, P.; Dahmes, B.; De Benedetti, A.; Dudero, P. R.; Franzoni, G.; Haupt, J.; Klapoetke, K.; Kubota, Y.; Mans, J.; Rekovic, V.; Rusack, R.; Sasseville, M.; Singovsky, A.] Univ Minnesota, Minneapolis, MN 55455 USA.
[Cremaldi, L. M.; Godang, R.; Kroeger, R.; Perera, L.; Rahmat, R.; Sanders, D. A.; Summers, D.] Univ Mississippi, University, MS 38677 USA.
[Bloom, K.; Bose, S.; Butt, J.; Claes, D. R.; Dominguez, A.; Eads, M.; Keller, J.; Kelly, T.; Kravchenko, I.; Lazo-Flores, J.; Lundstedt, C.; Malbouisson, H.; Malik, S.; Snow, G. R.] Univ Nebraska, Lincoln, NE 68588 USA.
[Baur, U.; Godshalk, A.; Iashvili, I.; Kharchilava, A.; Kumar, A.; Smith, K.; Zennamo, J.] SUNY Buffalo, Buffalo, NY 14260 USA.
[Alverson, G.; Barberis, E.; Baumgartel, D.; Boeriu, O.; Chasco, M.; Kaadze, K.; Reucroft, S.; Swain, J.; Wood, D.; Zhang, J.] Northeastern Univ, Boston, MA 02115 USA.
[Anastassov, A.; Kubik, A.; Odell, N.; Ofierzynski, R. A.; Pollack, B.; Pozdnyakov, A.; Schmitt, M.; Stoynev, S.; Velasco, M.; Won, S.] Northwestern Univ, Evanston, IL 60208 USA.
[Antonelli, L.; Berry, D.; Hildreth, M.; Jessop, C.; Karmgard, D. J.; Kolb, J.; Kolberg, T.; Lannon, K.; Luo, W.; Lynch, S.; Marinelli, N.; Morse, D. M.; Pearson, T.; Ruchti, R.; Slaunwhite, J.; Valls, N.; Warchol, J.; Wayne, M.; Ziegler, J.] Univ Notre Dame, Notre Dame, IN 46556 USA.
[Bylsma, B.; Durkin, L. S.; Gu, J.; Hill, C.; Killewald, P.; Ling, T. Y.; Rodenburg, M.; Williams, G.] Ohio State Univ, Columbus, OH 43210 USA.
[Adam, N.; Berry, E.; Elmer, P.; Gerbaudo, D.; Halyo, V.; Hebda, P.; Hunt, A.; Jones, J.; Laird, E.; Pegna, D. Lopes; Marlow, D.; Medvedeva, T.; Mooney, M.; Olsen, J.; Piroue, P.; Saka, H.; Stickland, D.; Tully, C.; Werner, J. S.; Zuranski, A.] Princeton Univ, Princeton, NJ 08544 USA.
[Acosta, J. G.; Huang, X. T.; Lopez, A.; Mendez, H.; Oliveros, S.; Vargas, J. E. Ramirez; Zatserklyaniy, A.] Univ Puerto Rico, Mayaguez, PR 00680 USA.
[Alagoz, E.; Barnes, V. E.; Bolla, G.; Borrello, L.; Bortoletto, D.; Everett, A.; Garfinkel, A. F.; Gecse, Z.; Gutay, L.; Jones, M.; Koybasi, O.; Laasanen, A. T.; Leonardo, N.; Liu, C.; Maroussov, V.; Meier, M.; Merkel, P.; Miller, D. H.; Neumeister, N.; Potamianos, K.; Shipsey, I.; Silvers, D.; Svyatkovskiy, A.; Yoo, H. D.; Zablocki, J.; Zheng, Y.] Purdue Univ, W Lafayette, IN 47907 USA.
[Jindal, P.; Parashar, N.] Purdue Univ Calumet, Hammond, IN 46323 USA.
[Boulahouache, C.; Cuplov, V.; Ecklund, K. M.; Geurts, F. J. M.; Liu, J. H.; Morales, J.; Padley, B. P.; Redjimi, R.; Roberts, J.; Zabel, J.] Rice Univ, Houston, TX 77251 USA.
[Betchart, B.; Bodek, A.; Chung, Y. S.; de Barbaro, P.; Demina, R.; Eshaq, Y.; Flacher, H.; Garcia-Bellido, A.; Goldenzweig, P.; Gotra, Y.; Han, J.; Harel, A.; Miner, D. C.; Orbaker, D.; Petrillo, G.; Vishnevskiy, D.; Zielinski, M.] Univ Rochester, Rochester, NY 14627 USA.
[Bhatti, A.; Demortier, L.; Goulianos, K.; Lungu, G.; Mesropian, C.; Yan, M.] Rockefeller Univ, New York, NY 10021 USA.
[Atramentov, O.; Barker, A.; Duggan, D.; Gershtein, Y.; Gray, R.; Halkiadakis, E.; Hidas, D.; Hits, D.; Lath, A.; Panwalkar, S.; Patel, R.; Richards, A.; Rose, K.; Schnetzer, S.; Somalwar, S.; Stone, R.; Thomas, S.] Rutgers State Univ, Piscataway, NJ 08854 USA.
[Cerizza, G.; Hollingsworth, M.; Spanier, S.; Yang, Z. C.; York, A.] Univ Tennessee, Knoxville, TN 37996 USA.
[Asaadi, J.; Eusebi, R.; Gilmore, J.; Gurrola, A.; Kamon, T.; Khotilovich, V.; Montalvo, R.; Nguyen, C. N.; Pivarski, J.; Safonov, A.; Sengupta, S.; Tatarinov, A.; Toback, D.; Weinberger, M.] Texas A&M Univ, College Stn, TX 77843 USA.
[Akchurin, N.; Bardak, C.; Damgov, J.; Jeong, C.; Kovitanggoon, K.; Lee, S. W.; Mane, P.; Roh, Y.; Sill, A.; Volobouev, I.; Wigmans, R.; Yazgan, E.] Texas Tech Univ, Lubbock, TX 79409 USA.
[Appelt, E.; Brownson, E.; Engh, D.; Florez, C.; Gabella, W.; Johns, W.; Kurt, P.; Maguire, C.; Melo, A.; Sheldon, P.; Velkovska, J.] Vanderbilt Univ, Nashville, TN 37235 USA.
[Arenton, M. W.; Balazs, M.; Boutle, S.; Buehler, M.; Conetti, S.; Cox, B.; Francis, B.; Hirosky, R.; Ledovskoy, A.; Lin, C.; Neu, C.; Patel, T.; Yohay, R.] Univ Virginia, Charlottesville, VA 22901 USA.
[Gollapinni, S.; Harr, R.; Karchin, P. E.; Loggins, V.; Mattson, M.; Milstene, C.; Sakharov, A.] Wayne State Univ, Detroit, MI 48202 USA.
[Anderson, M.; Bachtis, M.; Bellinger, J. N.; Carlsmith, D.; Dasu, S.; Efron, J.; Gray, L.; Grogg, K. S.; Grothe, M.; Hall-Wilton, R.; Herndon, M.; Klabbers, P.; Klukas, J.; Lanaro, A.; Lazaridis, C.; Leonard, J.; Liu, J.; Lomidze, D.; Loveless, R.; Mohapatra, A.; Parker, W.; Reeder, D.; Ross, I.; Savin, A.; Smith, W. H.; Swanson, J.; Weinberg, M.] Univ Wisconsin, Madison, WI 53706 USA.
[Hammer, J.; Piotrzkowski, K.; Darmenov, N.; Genchev, V.; Iaydjiev, P.; Panagiotou, A.; Hajdu, C.; Pant, L. M.; Tropiano, A.; De Guio, F.; Ghezzi, A.; De Cosa, A.; Perrozzi, L.; Lucaroni, A.; Volpe, R.; Bernardini, J.; Boccali, T.; Tenchini, R.; Tonelli, G.; Cavallari, F.; Pandolfi, F.; Rahatlou, S.; Botta, C.; Graziano, A.; Pelliccioni, M.; Pereira, A. Vilela; Varela, J.; Kossov, M.; Grishin, V.; Nesvold, E.; Sharma, V.; Hall-Wilton, R.] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland.
[Plestina, R.; Beaudette, F.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France.
[Abdel-Basit, A.] Cairo Univ, Cairo, Egypt.
[Assran, Y.] Suez Canal Univ, Suez, Egypt.
[Mahmoud, M. A.] Fayoum Univ, Al Fayyum, Egypt.
[Lohmann, W.] Brandenburg Tech Univ Cottbus, Cottbus, Germany.
[Krajczar, K.; Vesztergombi, G.; Veres, G. I.] Eotvos Lorand Univ, Budapest, Hungary.
[Biasotto, M.; Lacaprara, S.] Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy.
[Bell, A. J.] Univ Geneva, Geneva, Switzerland.
[Rolandi, G.] Ist Nazl Fis Nucl, Scuola Normale & Sez, Pisa, Italy.
[Rovelli, C.] Univ Roma La Sapienza, INFN, Sez Roma, Rome, Italy.
[Sibille, J.] Univ Kansas, Lawrence, KS 66045 USA.
[Cerci, S.] Adiyaman Univ, Adiyaman, Turkey.
[Sogut, K.] Mersin Univ, Mersin, Turkey.
[Demir, D.] Izmir Inst Technol, Izmir, Turkey.
[Kaya, M.; Kaya, O.] Kafkas Univ, Kars, Turkey.
[Ozkorucuklu, S.] Suleyman Demirel Univ, TR-32200 Isparta, Turkey.
[Sonmez, N.] Ege Univ, Izmir, Turkey.
Istanbul Tech Univ, TR-80626 Istanbul, Turkey.
RP Khachatryan, V (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
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Ezio/I-1788-2012; Giacomelli, Paolo/B-8076-2009; Kodolova,
Olga/D-7158-2012; Dudko, Lev/D-7127-2012; Katkov, Igor/E-2627-2012;
Boos, Eduard/D-9748-2012; Hektor, Andi/G-1804-2011; Wulz,
Claudia-Elisabeth/H-5657-2011; Chen, Jie/H-6210-2011; Bolton,
Tim/A-7951-2012; Stahl, Achim/E-8846-2011; Yang, Fan/B-2755-2012;
Krammer, Manfred/A-6508-2010; Tinoco Mendes, Andre David/D-4314-2011;
Lokhtin, Igor/D-7004-2012; Rolandi, Luigi (Gigi)/E-8563-2013; Zalewski,
Piotr/H-7335-2013; Ivanov, Andrew/A-7982-2013; Hill,
Christopher/B-5371-2012; Kuleshov, Sergey/D-9940-2013; Wimpenny,
Stephen/K-8848-2013; Troitsky, Sergey/C-1377-2014; Marlow,
Daniel/C-9132-2014; Oguri, Vitor/B-5403-2013; Janssen,
Xavier/E-1915-2013; Alves, Gilvan/C-4007-2013; Santoro,
Alberto/E-7932-2014
OI Luukka, Panja/0000-0003-2340-4641; De Guio,
Federico/0000-0001-5927-8865; Sogut, Kenan/0000-0002-9682-2855;
Giubilato, Piero/0000-0003-4358-5355; Gallinaro,
Michele/0000-0003-1261-2277; Tabarelli de Fatis,
Tommaso/0000-0001-6262-4685; Lenzi, Piergiulio/0000-0002-6927-8807;
Gutsche, Oliver/0000-0002-8015-9622; Raval, Amita/0000-0003-0164-4337;
Torassa, Ezio/0000-0003-2321-0599; Vilela Pereira,
Antonio/0000-0003-3177-4626; CHANG, PAO-TI/0000-0003-4064-388X; Varela,
Joao/0000-0003-2613-3146; Faccioli, Pietro/0000-0003-1849-6692; Grachov,
Oleg/0000-0002-4294-9025; Goldstein, Joel/0000-0003-1591-6014; Heath,
Helen/0000-0001-6576-9740; Grassi, Marco/0000-0003-2422-6736; Belyaev,
Alexander/0000-0002-1733-4408; Leonardo, Nuno/0000-0002-9746-4594;
Mercier, Damien/0000-0001-5063-7067; Fassi, Farida/0000-0002-6423-7213;
Ghezzi, Alessio/0000-0002-8184-7953; bianco,
stefano/0000-0002-8300-4124; Demaria, Natale/0000-0003-0743-9465;
Benaglia, Andrea Davide/0000-0003-1124-8450; Covarelli,
Roberto/0000-0003-1216-5235; Ciulli, Vitaliano/0000-0003-1947-3396;
Martelli, Arabella/0000-0003-3530-2255; Levchenko,
Petr/0000-0003-4913-0538; Uliyanov, Alexey/0000-0001-6935-8949; Menasce,
Dario Livio/0000-0002-9918-1686; Attia Mahmoud,
Mohammed/0000-0001-8692-5458; Bilki, Burak/0000-0001-9515-3306; Lloret
Iglesias, Lara/0000-0002-0157-4765; Carrera, Edgar/0000-0002-0857-8507;
Sguazzoni, Giacomo/0000-0002-0791-3350; Ligabue,
Franco/0000-0002-1549-7107; Diemoz, Marcella/0000-0002-3810-8530;
Tricomi, Alessia Rita/0000-0002-5071-5501; Bean,
Alice/0000-0001-5967-8674; Longo, Egidio/0000-0001-6238-6787; Di Matteo,
Leonardo/0000-0001-6698-1735; Baarmand, Marc/0000-0002-9792-8619;
Boccali, Tommaso/0000-0002-9930-9299; Haj Ahmad,
Wael/0000-0003-1491-0446; Xie, Si/0000-0003-2509-5731; Goh,
Junghwan/0000-0002-1129-2083; Ruiz, Alberto/0000-0002-3639-0368; Govoni,
Pietro/0000-0002-0227-1301; Tuominen, Eija/0000-0002-7073-7767; Yazgan,
Efe/0000-0001-5732-7950; Paulini, Manfred/0000-0002-6714-5787; Gerbaudo,
Davide/0000-0002-4463-0878; Vieira de Castro Ferreira da Silva, Pedro
Manuel/0000-0002-5725-041X; TUVE', Cristina/0000-0003-0739-3153; Gulmez,
Erhan/0000-0002-6353-518X; Arce, Pedro/0000-0003-3009-0484; Flix,
Josep/0000-0003-2688-8047; Ozdemir, Kadri/0000-0002-0103-1488; Paganoni,
Marco/0000-0003-2461-275X; Lazzizzera, Ignazio/0000-0001-5092-7531; Sen,
Sercan/0000-0001-7325-1087; D'Alessandro, Raffaello/0000-0001-7997-0306;
Trocsanyi, Zoltan/0000-0002-2129-1279; Konecki,
Marcin/0000-0001-9482-4841; Hernandez Calama, Jose
Maria/0000-0001-6436-7547; Bedoya, Cristina/0000-0001-8057-9152;
Matorras, Francisco/0000-0003-4295-5668; My,
Salvatore/0000-0002-9938-2680; Muelmenstaedt,
Johannes/0000-0003-1105-6678; Rovelli, Tiziano/0000-0002-9746-4842;
Codispoti, Giuseppe/0000-0003-0217-7021; Cerrada,
Marcos/0000-0003-0112-1691; Scodellaro, Luca/0000-0002-4974-8330; Calvo
Alamillo, Enrique/0000-0002-1100-2963; Marinho,
Franciole/0000-0002-7327-0349; Ragazzi, Stefano/0000-0001-8219-2074;
Benussi, Luigi/0000-0002-2363-8889; Grandi, Claudio/0000-0001-5998-3070;
de Jesus Damiao, Dilson/0000-0002-3769-1680; Montanari,
Alessandro/0000-0003-2748-6373; Amapane, Nicola/0000-0001-9449-2509;
Novaes, Sergio/0000-0003-0471-8549; Della Ricca,
Giuseppe/0000-0003-2831-6982; Mundim, Luiz/0000-0001-9964-7805; Servoli,
Leonello/0000-0003-1725-9185; Tomei, Thiago/0000-0002-1809-5226; Azzi,
Patrizia/0000-0002-3129-828X; Dudko, Lev/0000-0002-4462-3192; Katkov,
Igor/0000-0003-3064-0466; Hektor, Andi/0000-0001-7873-8118; Wulz,
Claudia-Elisabeth/0000-0001-9226-5812; Stahl, Achim/0000-0002-8369-7506;
Krammer, Manfred/0000-0003-2257-7751; Tinoco Mendes, Andre
David/0000-0001-5854-7699; Rolandi, Luigi (Gigi)/0000-0002-0635-274X;
Ivanov, Andrew/0000-0002-9270-5643; Hill,
Christopher/0000-0003-0059-0779; Kuleshov, Sergey/0000-0002-3065-326X;
Wimpenny, Stephen/0000-0003-0505-4908; Troitsky,
Sergey/0000-0001-6917-6600;
FU FMSR (Austria); FNRS; FWO (Belgium); CNPq; CAPES; FAPERJ; FAPESP
(Brazil); MES (Bulgaria); CERN; CAS; MoST; NSFC (China); COLCIENCIAS
(Colombia); MSES (Croatia); RPF (Cyprus); Academy of Sciences; NICPB
(Estonia); Academy of Finland; ME; HIP (Finland); CEA; CNRS/IN2P3
(France); BMBF; DFG; HGF (Germany); GSRT (Greece); OTKA; NKTH (Hungary);
DAE; DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF; WCU
(Korea); LAS (Lithuania); CINVESTAV; CONACYT; SEP; UASLP-FAI (Mexico);
PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia); JINR
(Belarus); JINR (Georgia); JINR (Ukraine); JINR (Uzbekistan); MST; MAE
(Russia); MSTD (Serbia); MICINN; CPAN (Spain); Swiss Funding Agencies
(Switzerland); NSC (Taipei); TUBITAK; TAEK (Turkey); STFC (United
Kingdom); DOE; NSF (U.S.)
FX We wish to congratulate our colleagues in the CERN accelerator
departments for the excellent performance of the LHC machine. We thank
the technical and administrative staff at CERN and other CMS institutes,
and acknowledge support from: FMSR (Austria); FNRS and FWO (Belgium);
CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS,
MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF
(Cyprus); Academy of Sciences and NICPB (Estonia); Academy of Finland,
ME, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF
(Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India);
IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Korea); LAS
(Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); PAEC
(Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus,
Georgia, Ukraine, Uzbekistan); MST and MAE (Russia); MSTD (Serbia);
MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC
(Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF
(U.S.).
NR 25
TC 106
Z9 106
U1 3
U2 60
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 17
PY 2010
VL 105
IS 21
AR 211801
DI 10.1103/PhysRevLett.105.211801
PG 14
WC Physics, Multidisciplinary
SC Physics
GA 681JR
UT WOS:000284308500006
PM 21231289
ER
PT J
AU Kolpak, AM
Walker, FJ
Reiner, JW
Segal, Y
Su, D
Sawicki, MS
Broadbridge, CC
Zhang, Z
Zhu, Y
Ahn, CH
Ismail-Beigi, S
AF Kolpak, A. M.
Walker, F. J.
Reiner, J. W.
Segal, Y.
Su, D.
Sawicki, M. S.
Broadbridge, C. C.
Zhang, Z.
Zhu, Y.
Ahn, C. H.
Ismail-Beigi, S.
TI Interface-Induced Polarization and Inhibition of Ferroelectricity in
Epitaxial SrTiO3/Si
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID CRYSTALLINE OXIDES; THIN-FILMS; SILICON; BATIO3; PHASE
AB We use SrTiO3/Si as a model system to elucidate the effect of the interface on ferroelectric behavior in epitaxial oxide films on silicon. Using both first-principles computations and synchrotron x-ray diffraction measurements, we show that structurally imposed boundary conditions at the interface stabilize a fixed (pinned) polarization in the film but inhibit ferroelectric switching. We demonstrate that the interface chemistry responsible for these phenomena is general to epitaxial silicon-oxide interfaces, impacting on the design of silicon-based functional oxide devices.
C1 [Kolpak, A. M.; Walker, F. J.; Reiner, J. W.; Segal, Y.; Sawicki, M. S.; Broadbridge, C. C.; Zhu, Y.; Ahn, C. H.; Ismail-Beigi, S.] Yale Univ, Ctr Res Interface Struct & Phenomena, New Haven, CT 06520 USA.
[Kolpak, A. M.; Walker, F. J.; Reiner, J. W.; Segal, Y.; Ahn, C. H.; Ismail-Beigi, S.] Yale Univ, Dept Appl Phys, New Haven, CT 06520 USA.
[Su, D.; Zhu, Y.] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
[Sawicki, M. S.; Broadbridge, C. C.] So Connecticut State Univ, Dept Phys, New Haven, CT 06515 USA.
[Zhang, Z.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Kolpak, AM (reprint author), Yale Univ, Ctr Res Interface Struct & Phenomena, New Haven, CT 06520 USA.
RI Kim, Yu Jin/A-2433-2012; Su, Dong/A-8233-2013; Ismail-Beigi,
Sohrab/F-2382-2014; Zhang, Zhan/A-9830-2008
OI Walker, Frederick/0000-0002-8094-249X; Su, Dong/0000-0002-1921-6683;
Ismail-Beigi, Sohrab/0000-0002-7331-9624; Zhang,
Zhan/0000-0002-7618-6134
FU National Science Foundation under MRSEC [DMR 0520495, DMR 1006256]; SRC;
NCSA; Yale HPC; U.S. Department of Energy, Office of Science, Office of
Basic Energy Science [DE-AC02-06CH11357, DE-AC02-98CH10886]
FX We acknowledge support from the National Science Foundation under MRSEC
DMR 0520495 and DMR 1006256, and SRC, as well as computational support
from NCSA TeraGrid and Yale HPC. We thank the team of the 33ID beam line
at the APS for technical assistance. Use of the APS was supported by the
U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract No. DE-AC02-06CH11357. Work at Brookhaven was
supported by the U.S. Department of Energy, Office of Science, Office of
Basic Energy Science, under Contract No. DE-AC02-98CH10886.
NR 28
TC 32
Z9 32
U1 2
U2 42
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 17
PY 2010
VL 105
IS 21
AR 217601
DI 10.1103/PhysRevLett.105.217601
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 681JR
UT WOS:000284308500027
PM 21231354
ER
PT J
AU Wang, YM
Ott, RT
Hamza, AV
Besser, MF
Almer, J
Kramer, MJ
AF Wang, Y. M.
Ott, R. T.
Hamza, A. V.
Besser, M. F.
Almer, J.
Kramer, M. J.
TI Achieving Large Uniform Tensile Ductility in Nanocrystalline Metals
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID PLASTIC-DEFORMATION; STRENGTH; COBALT
AB Synchrotron x-ray diffraction and high-resolution electron microscopy revealed the origin of different strain hardening behaviors (and dissimilar tensile ductility) in nanocrystalline Ni and nanocrystalline Co. Planar defect accumulations and texture evolution were observed in Co but not in Ni, suggesting that interfacial defects are an effective passage to promote strain hardening in truly nanograins. Twinning becomes less significant in Co when grain sizes reduce to below similar to 15 nm. This study offers insights into achieving excellent mechanical properties in nanocrystalline materials.
C1 [Wang, Y. M.; Hamza, A. V.] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94550 USA.
[Ott, R. T.; Besser, M. F.; Kramer, M. J.] US DOE, Div Mat Sci & Engn, Ames Lab, Ames, IA 50011 USA.
[Almer, J.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Wang, YM (reprint author), Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94550 USA.
EM ymwang@llnl.gov; rtott@ameslab.gov
RI Wang, Yinmin (Morris)/F-2249-2010
OI Wang, Yinmin (Morris)/0000-0002-7161-2034
FU U.S. DOE by Lawrence Livermore National Laboratory [DE-AC52-07NA27344];
Office of Basic Energy Sciences, U.S. DOE [DE-AC02-07CH11358]; U.S. DOE
[DE-AC02-06CH11357]
FX This work was performed under the auspices of the U.S. DOE
(DE-AC52-07NA27344) by Lawrence Livermore National Laboratory. The work
at Ames Laboratory was supported by the Office of Basic Energy Sciences,
U.S. DOE (DE-AC02-07CH11358). The APS was supported by the U.S. DOE
(DE-AC02-06CH11357).
NR 19
TC 30
Z9 30
U1 7
U2 53
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 17
PY 2010
VL 105
IS 21
AR 215502
DI 10.1103/PhysRevLett.105.215502
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 681JR
UT WOS:000284308500019
PM 21231320
ER
PT J
AU Elliott, SR
Guiseppe, VE
LaRoque, BH
Johnson, RA
Mashnik, SG
AF Elliott, S. R.
Guiseppe, V. E.
LaRoque, B. H.
Johnson, R. A.
Mashnik, S. G.
TI Fast-neutron activation of long-lived isotopes in enriched Ge
SO PHYSICAL REVIEW C
LA English
DT Article
ID DOUBLE-BETA-DECAY; COSMOGENIC ACTIVATION; GERMANIUM; GE-76; MASS
AB We measured the production of Co-57, Mn-54, Ge-68, Zn-65, and Co-60 in a sample of Ge enriched in isotope 76 due to high-energy neutron interactions. These isotopes, especially Ge-68, are critical in understanding background in Ge detectors used for double beta decay experiments. They are produced by cosmogenic-neutron interactions in the detectors while they reside on the Earth's surface. These production rates were measured at neutron energies of a few hundred MeV. We compared the measured production to that predicted by cross-section calculations based on CEM03.02. The cross-section calculations overpredict our measurements by approximately a factor of 3 depending on isotope. We then use the measured cosmic-ray neutron flux, our measurements, and the CEM03.02 cross sections to predict the cosmogenic production rate of these isotopes. The uncertainty in extrapolating the cross-section model to higher energies dominates the total uncertainty in the cosmogenic production rate.
C1 [Elliott, S. R.; Guiseppe, V. E.; LaRoque, B. H.] Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA.
[Johnson, R. A.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Mashnik, S. G.] Los Alamos Natl Lab, XCP Div, Los Alamos, NM 87545 USA.
RP Elliott, SR (reprint author), Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA.
EM elliotts@lanl.gov
FU US Department of Energy [DE-AC52-06NA25396]; Department of Energy's
Office of Biological and Environmental Research at Pacific Northwest
National Laboratory; Nuclear Physics office of the US Department of
Energy [2011LANLE9BW]
FX We gratefully acknowledge the support of the US Department of Energy
through the LANL/LDRD Program for this work. We thank Frank Avignone III
for providing the enriched Ge sample and we thank Jason Detwiler for a
careful reading of this manuscript. This work benefited from the use of
the Los Alamos Neutron Science Center, funded by the US Department of
Energy under Contract No. DE-AC52-06NA25396. We are grateful for the ToF
SIMS measurements that were performed by Zihua Zhu using EMSL, a
national scientific user facility sponsored by the Department of
Energy's Office of Biological and Environmental Research and located at
Pacific Northwest National Laboratory. We thank Richard Kouzes for
making arrangements for the ToF SIMS measurements. This work also
benefited from our underground laboratory at the Waste Isolation Pilot
Plant (WIPP), which we operate with support from the Nuclear Physics
office of the US Department of Energy under Contract No. 2011LANLE9BW.
Finally, we thank our friends and hosts at WIPP for their continuing
support of our activities underground at that facility.
NR 34
TC 13
Z9 13
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9985
EI 2469-9993
J9 PHYS REV C
JI Phys. Rev. C
PD NOV 16
PY 2010
VL 82
IS 5
AR 054610
DI 10.1103/PhysRevC.82.054610
PG 9
WC Physics, Nuclear
SC Physics
GA 680TR
UT WOS:000284258600002
ER
PT J
AU Oh, SW
Myung, ST
Oh, SM
Oh, KH
Amine, K
Scrosati, B
Sun, YK
AF Oh, Sung Woo
Myung, Seung-Taek
Oh, Seung-Min
Oh, Kyu Hwan
Amine, Khalil
Scrosati, Bruno
Sun, Yang-Kook
TI Double Carbon Coating of LiFePO4 as High Rate Electrode for Rechargeable
Lithium Batteries
SO ADVANCED MATERIALS
LA English
DT Article
ID CATHODE MATERIALS; ION BATTERIES; COATED LIFEPO4; CAPACITY; ROUTE; CELLS
AB Micrometer-size LiFePO4 spheres with homogeneous double carbon coating layers have been prepared as potential electrode materials for battery applications. The double carbon-coated LiFePO4 electrodes in a lithium-ion cell exhibited discharge capacities of the order of 160 mAh g(-1) and 115 mAh g(-1) at 25 degrees C under 0.1 C-rate and 10 C-rate, respectively.
C1 [Scrosati, Bruno] Univ Roma La Sapienza, Dept Chem, I-00185 Rome, Italy.
[Amine, Khalil] Argonne Natl Lab, Chem Sci & Engn Div, Electrochem Technol Program, Argonne, IL 60439 USA.
[Oh, Kyu Hwan] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151742, South Korea.
[Myung, Seung-Taek] Iwate Univ, Dept Chem Engn, Morioka, Iwate 0208551, Japan.
[Oh, Sung Woo; Oh, Seung-Min; Sun, Yang-Kook] Hanyang Univ, Dept WCU Energy Engn, Seoul 133791, South Korea.
RP Scrosati, B (reprint author), Univ Roma La Sapienza, Dept Chem, Piazza Aldo Moro 5, I-00185 Rome, Italy.
EM bruno.scrosati@uniroma1.it; yksun@hanyang.ac.kr
RI Sun, Yang-Kook/B-9157-2013; Amine, Khalil/K-9344-2013
OI Sun, Yang-Kook/0000-0002-0117-0170;
FU Education, Science, and Technology [R31-2008-000-10092]; Korea
government (MEST) [2009-0092780]
FX This research was supported by WCU (World Class University) program
through the Korea Science and Engineering Foundation by Education,
Science, and Technology (R31-2008-000-10092) and the National Research
Foundation of Korea (NRF) grant funded by the Korea government (MEST)
(No. 2009-0092780).
NR 23
TC 229
Z9 236
U1 24
U2 258
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0935-9648
J9 ADV MATER
JI Adv. Mater.
PD NOV 16
PY 2010
VL 22
IS 43
BP 4842
EP +
DI 10.1002/adma.200904027
PG 5
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 685HJ
UT WOS:000284619500009
PM 20648516
ER
PT J
AU Utschig, LM
Tiede, DM
Poluektov, OG
AF Utschig, Lisa M.
Tiede, David M.
Poluektov, Oleg G.
TI Light-Induced Alteration of Low-Temperature Interprotein Electron
Transfer between Photosystem I and Flavodoxin
SO BIOCHEMISTRY
LA English
DT Article
ID CROSS-LINKED COMPLEX; FERREDOXIN-NADP(+) REDUCTASE; ACCEPTOR
AB Electron paramagnetic resonance (EPR) was used to study light-induced electron transfer in Photosystem I-flavodoxin complexes. Deuteration of flavodoxin enables the signals of the reduced flavin acceptor and oxidized primary donor, P(700)(+), to be well-resolved at X- and D-band EPR. In dark-adapted samples, photoinitiated interprotein electron transfer does not occur at 5 K. However, for samples prepared in dim light, significant interprotein electron transfer occurs at 5 K and a concomitant loss of the spin-correlated radical pair P(+)A(1A)(-) signal is observed. These results indicate a light-induced reorientation of flavodoxin in the PSI docking site that allows a high quantum yield efficiency for the interprotein electron transfer reaction.
C1 [Utschig, Lisa M.; Tiede, David M.; Poluektov, Oleg G.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
RP Utschig, LM (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM utschig@anl.gov
FU Division of Chemical Sciences, Geosciences, and Biosciences, Office of
Basic Energy Sciences of the U.S. Department of Energy
[DE-AC02-06CH11357]
FX This work is supported by the Division of Chemical Sciences,
Geosciences, and Biosciences, Office of Basic Energy Sciences of the
U.S. Department of Energy, under Contract DE-AC02-06CH11357.
NR 21
TC 2
Z9 2
U1 0
U2 5
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0006-2960
J9 BIOCHEMISTRY-US
JI Biochemistry
PD NOV 16
PY 2010
VL 49
IS 45
BP 9682
EP 9684
DI 10.1021/bi101507j
PG 3
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 675MC
UT WOS:000283833800002
PM 20961074
ER
PT J
AU Lee, SS
Fenter, P
Park, C
Sturchio, NC
Nagy, KL
AF Lee, Sang Soo
Fenter, Paul
Park, Changyong
Sturchio, Neil C.
Nagy, Kathryn L.
TI Hydrated Cation Speciation at the Muscovite (001)-Water Interface
SO LANGMUIR
LA English
DT Article
ID X-RAY REFLECTIVITY; MOLECULAR-DYNAMICS SIMULATION; FULVIC-ACID; 001
SURFACE; ADSORPTION; SORPTION; CHARGE; MEDIA; IONS
AB Charged materials in aqueous systems interact according to their interfacial properties, typically described by the electrical double layer (EDL). Distributions or divalent metal cations at the muscovite (001)-solution interlace observed using resonant anomalous X-ray reflectivity demonstrate an unexpected complexity with respect to the EDL structure. Three forms of adsorbed cations can coexist: the classical inner-sphere and outer-sphere complexes and a third "extended" outer-sphere complex located farther from the surface. Their relative proportions are controlled by the energy balance among cation hydration, interface hydration, and electrostatic attraction. Systematic trends in coverage and position establish the defining role of cation hydration in stabilizing the multiple coexisting species.
C1 [Lee, Sang Soo; Fenter, Paul; Park, Changyong] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Sturchio, Neil C.; Nagy, Kathryn L.] Univ Illinois, Dept Earth & Environm Sci, Chicago, IL 60607 USA.
RP Lee, SS (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM sslee@anl.gov
RI Lee, Sang Soo/B-9046-2012; Park, Changyong/A-8544-2008;
OI Park, Changyong/0000-0002-3363-5788; Fenter, Paul/0000-0002-6672-9748
FU Office of Basic Energy Sciences; Department of Energy
[DE-AC02-06CH11357]; National Science Foundation [EAR-0447310]; U.S.
Department of Energy, Office of Science, Office of Basic Energy Sciences
[DE-AC02-06CH11357]; [DE-FG02-06ER15364]; [DE-FG02-03ER15381]
FX This work was supported by the Geosciences Research Program, Office of
Basic Energy Sciences. United States Department of Energy under contract
DE-AC02-06CH11357 to UChicago Argonne, LLC as the operator of Argonne
National Laboratory and grants DE-FG02-06ER15364 and DE-FG02-03ER15381
and National Science Foundation grant EAR-0447310 to the University of
Illinois at Chicago. The reflectivity data were collected at beamlines
6-ID-B (MU-CAT) and 33-ID-D (UNI-XOR) at the Advanced Photon Source. Use
of the Advanced Photon Source was supported by the U.S. Department of
Energy, Office of Science, Office of Basic Energy Sciences under
contract DE-AC02-06CH11357 to UChicago Argonne. EEC as operator of
Argonne National Laboratory. Thoughtful comments from three anonymous
reviewers aided the revision of this letter.
NR 47
TC 44
Z9 45
U1 1
U2 46
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD NOV 16
PY 2010
VL 26
IS 22
BP 16647
EP 16651
DI 10.1021/la1032866
PG 5
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 675NQ
UT WOS:000283837800006
PM 20932042
ER
PT J
AU Holder, PG
Finley, DT
Stephanopoulos, N
Walton, R
Clark, DS
Francis, MB
AF Holder, Patrick G.
Finley, Daniel T.
Stephanopoulos, Nicholas
Walton, Ross
Clark, Douglas S.
Francis, Matthew B.
TI Dramatic Thermal Stability of Virus-Polymer Conjugates in Hydrophobic
Solvents
SO LANGMUIR
LA English
DT Article
ID TOBACCO-MOSAIC-VIRUS; PROTEIN KINETIC STABILITY; ORGANIC-SOLVENTS;
SURFACE MODIFICATION; WATER; SOLUBILIZATION; COMPOSITES; TEMPLATES;
PARTICLES; NANOWIRES
AB We have developed a method for integrating the self-assembling tobacco mosaic virus capsid into hydrophobic solvents and hydrophobic polymers. The capsid was modified at tyrosine residues to display an array or linear poly(ethylene glycol) chains, allowing it to be transferred into chloroform. In a subsequent step, the capsids could he transferred to a variety of hydrophobic solvents, including benzyl alcohol, o-dichlorohenzene, and diglyme. The thermal stability of the material against denaturation increased from 70 degrees C in water to at least 160 degrees C in hydrophobic solvents. With a view toward material fabrication, the polymer-coated TMV rods were also incorporated into solid polystyrene and thermally cast at 110 degrees C. Overall, this process significantly expands the range of processing conditions for TMV-based materials, with the goal of incorporating these templated nanoscale systems into conductive polymer matrices.
C1 [Holder, Patrick G.; Finley, Daniel T.; Stephanopoulos, Nicholas; Francis, Matthew B.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Clark, Douglas S.] Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA.
[Francis, Matthew B.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Walton, Ross] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Francis, MB (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM francis@cchem.berkeley.edu
RI Holder, Patrick/D-3202-2013; Holder, Patrick/O-4876-2016
OI Holder, Patrick/0000-0003-0971-191X; Holder, Patrick/0000-0003-0971-191X
FU NSF [CHE-0449772]; UC Berkeley [1 T32 GMO66698]
FX This work was generously funded by the NSF (CHE-0449772). P.G.H. was
supported by the UC Berkeley Chemical Biology Graduate Program (NRSA
Training Grant 1 T32 GMO66698). The authors thank Dr. Harvey R. Johnson
for helpful discussions. Prof. A. Paul Alivasatos, Prof. Peidong Yang,
and Prof. Jean M. J. Frechet are acknowledged for the use or materials
and instrumentation. They also thank the DC Berkeley Electron Microscopy
Facility for guidance.
NR 36
TC 27
Z9 27
U1 1
U2 33
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD NOV 16
PY 2010
VL 26
IS 22
BP 17383
EP 17388
DI 10.1021/la1039305
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 675NQ
UT WOS:000283837800101
PM 20964388
ER
PT J
AU Dai, Q
Lam, M
Swanson, S
Yu, RHR
Milliron, DJ
Topuria, T
Jubert, PO
Nelson, A
AF Dai, Qiu
Lam, Michelle
Swanson, Sally
Yu, Rui-Hui Rachel
Milliron, Delia J.
Topuria, Teya
Jubert, Pierre-Olivier
Nelson, Alshakim
TI Monodisperse Cobalt Ferrite Nanomagnets with Uniform Silica Coatings
SO LANGMUIR
LA English
DT Article
ID IRON-OXIDE NANOPARTICLES; MAGNETIC-PROPERTIES; INTERPARTICLE
INTERACTIONS; MN NANOPARTICLES; MFE2O4 M; NANOCRYSTALS; PARTICLES; CO;
ASSEMBLIES; COLLOIDS
AB Ferro- and ferrimagnetic nanoparticles are difficult to manipulate in solution as a consequence of the formation of magnetically induced nanoparticle aggregates, which hamper the utility of these particles for applications ranging from data storage to bionanotechnology. Nonmagnetic shells that encapsulate these magnetic particles can reduce the interparticle magnetic interactions and improve the dispersibility of the nanoparticles in solution. A route to create uniform silica shells around individual cobalt ferrite nanoparticles-which uses poly(acrylic acid) to bind to the nanoparticles surface and inhibit nanoparticle aggregation prior to the addition of a silica precursor-was developed. In the absence of the poly(acrylic acid) the cobalt ferrite nanoparticles irreversibly aggregated during the silica shell formation. The thickness of the silica shell around the core-shell nanoparticles could be controlled in order to tune the interparticle magnetic coupling as well as inhibit magnetically induced nanoparticle aggregation. These ferrimagnetic core-silica shell structures form stable dispersion in polar solvents such as EtOH and water, which is critical for enabling technologies that require the assembly or derivatization of ferrimagnetic particles in solution.
C1 [Dai, Qiu; Lam, Michelle; Swanson, Sally; Yu, Rui-Hui Rachel; Topuria, Teya; Jubert, Pierre-Olivier; Nelson, Alshakim] IBM Almaden Res Ctr, San Jose, CA 95120 USA.
[Milliron, Delia J.] Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94611 USA.
RP Jubert, PO (reprint author), IBM Almaden Res Ctr, 650 Harry Rd, San Jose, CA 95120 USA.
EM pjubert@us.ibm.com; alshak@us.ibm.com
RI Milliron, Delia/D-6002-2012
FU Office of Science, Office of Basic Energy Sciences, of the U.S.
Department of Energy [DE-ACO2-05CH11231]; IBM
FX We thank IBM for funding and support. Work at the Molecular Foundry was
supported by the Office of Science, Office of Basic Energy Sciences, of
the U.S. Department of Energy under Contract DE-ACO2-05CH11231
NR 40
TC 34
Z9 35
U1 3
U2 29
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD NOV 16
PY 2010
VL 26
IS 22
BP 17546
EP 17551
DI 10.1021/la103042q
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 675NQ
UT WOS:000283837800124
PM 20961061
ER
PT J
AU Fang, XW
Wang, CZ
Yao, YX
Ding, ZJ
Ho, KM
AF Fang, X. W.
Wang, C. Z.
Yao, Y. X.
Ding, Z. J.
Ho, K. M.
TI Atomistic cluster alignment method for local order mining in liquids and
glasses
SO PHYSICAL REVIEW B
LA English
DT Article
ID TOTAL-ENERGY CALCULATIONS; SHORT-RANGE ORDER; WAVE BASIS-SET; METALLIC
GLASSES; MOLECULAR-DYNAMICS; FORMING ABILITY; ALLOYS; ZR; PACKING
AB An atomistic cluster alignment method is developed to identify and characterize the local atomic structural order in liquids and glasses. With the "order mining" idea for structurally disordered systems, the method can detect the presence of any type of local order in the system and can quantify the structural similarity between a given set of templates and the aligned clusters in a systematic and unbiased manner. Moreover, population analysis can also be carried out for various types of clusters in the system. The advantages of the method in comparison with other previously developed analysis methods are illustrated by performing the structural analysis for four prototype systems (i.e., pure Al, pure Zr, Zr(35)Cu(65), and Zr(36)Ni(64)). The results show that the cluster alignment method can identify various types of short-range orders (SROs) in these systems correctly while some of these SROs are difficult to capture by most of the currently available analysis methods (e.g., Voronoi tessellation method). Such a full three-dimensional atomistic analysis method is generic and can be applied to describe the magnitude and nature of noncrystalline ordering in many disordered systems.
C1 [Fang, X. W.; Wang, C. Z.; Yao, Y. X.; Ho, K. M.] US DOE, Ames Lab, Ames, IA 50011 USA.
[Fang, X. W.; Wang, C. Z.; Yao, Y. X.; Ho, K. M.] Iowa State Univ, Dept Phys, Ames, IA 50011 USA.
[Fang, X. W.; Ding, Z. J.] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China.
[Fang, X. W.; Ding, Z. J.] Univ Sci & Technol China, Dept Phys, Hefei 230026, Anhui, Peoples R China.
RP Wang, CZ (reprint author), US DOE, Ames Lab, Ames, IA 50011 USA.
EM wangcz@ameslab.gov
RI Yao, Yongxin/B-7320-2008
FU U.S. Department of Energy, Basic Energy Sciences, Division of Materials
Science and Engineering at the National Energy Research Supercomputing
Centre (NERSC) in Berkeley [DE-AC02-07CH11358]; China Scholarship
Council [2008634035]; National Natural Science Foundation of China
[10874160, 11074232]; "111" project
FX We thank S. G. Hao, Li Huang, and S. Y. Wang for useful discussions and
providing us their MD simulation trajectories on
Zr35Cu65, Zr36Ni64, and Zr.
Work at Ames Laboratory was supported by the U.S. Department of Energy,
Basic Energy Sciences, Division of Materials Science and Engineering,
including a grant of computer time at the National Energy Research
Supercomputing Centre (NERSC) in Berkeley, under Contract No.
DE-AC02-07CH11358. X. W. F. acknowledges the support from China
Scholarship Council (File No. 2008634035) and Z.J.D. acknowledges the
National Natural Science Foundation of China (Grant Nos. 10874160 and
11074232) and "111" project.
NR 36
TC 48
Z9 48
U1 7
U2 32
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 16
PY 2010
VL 82
IS 18
AR 184204
DI 10.1103/PhysRevB.82.184204
PG 10
WC Physics, Condensed Matter
SC Physics
GA 680TJ
UT WOS:000284257500004
ER
PT J
AU Gray, AX
Papp, C
Balke, B
Yang, SH
Huijben, M
Rotenberg, E
Bostwick, A
Ueda, S
Yamashita, Y
Kobayashi, K
Gullikson, EM
Kortright, JB
Groot, FMF
Rijnders, G
Blank, DHA
Ramesh, R
Fadley, CS
AF Gray, A. X.
Papp, C.
Balke, B.
Yang, S. -H.
Huijben, M.
Rotenberg, E.
Bostwick, A.
Ueda, S.
Yamashita, Y.
Kobayashi, K.
Gullikson, E. M.
Kortright, J. B.
de Groot, F. M. F.
Rijnders, G.
Blank, D. H. A.
Ramesh, R.
Fadley, C. S.
TI Interface properties of magnetic tunnel junction La0.7Sr0.3MnO3/SrTiO3
superlattices studied by standing-wave excited photoemission
spectroscopy
SO PHYSICAL REVIEW B
LA English
DT Article
ID ROOM-TEMPERATURE; MAGNETORESISTANCE; OXIDES
AB The chemical and electronic-structure profiles of magnetic tunnel junction (MTJ) La0.7Sr0.3MnO3/SrTiO3 (LSMO/STO) superlattices have been quantitatively determined via soft and hard x-ray standing-wave excited photoemission, x-ray absorption and x-ray reflectivity, in conjunction with x-ray optical and core-hole multiplet theoretical modeling. Epitaxial superlattice samples consisting of 48 and 120 bilayers of LSMO and STO, each nominally four unit cells thick, and still exhibiting LSMO ferromagnetism, were studied. By varying the incidence angle around the superlattice Bragg condition, the standing wave was moved vertically through the interfaces. By comparing experiment to x-ray optical calculations, the detailed chemical profile of the superlattice and its interfaces was quantitatively derived with angstrom precision. The multilayers were found to have a small similar to 6% change in periodicity from top to bottom. Interface compositional mixing or roughness over similar to 6 angstrom was also found, as well as a significant change in the soft x-ray optical coefficients of LSMO near the interface. The soft x-ray photoemission data exhibit a shift in the position of the Mn 3p peak near the interface, which is not observed for Mn 3s. Combined with core-hole multiplet theory incorporating Jahn-Teller distortion, these results indicate a change in the Mn bonding state near the LSMO/STO interface. Our results thus further clarify the reduced (MTJ) performance of LSMO/STO compared to ideal theoretical expectations.
C1 [Gray, A. X.; Fadley, C. S.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
[Gray, A. X.; Papp, C.; Balke, B.; Kortright, J. B.; Ramesh, R.; Fadley, C. S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Papp, C.] Univ Erlangen Nurnberg, Lehrstuhl Phys Chem 2, D-91058 Erlangen, Germany.
[Balke, B.] Johannes Gutenberg Univ Mainz, Inst Anorgan & Analyt Chem, D-55099 Mainz, Germany.
[Yang, S. -H.] IBM Almaden Res Ctr, San Jose, CA 95120 USA.
[Huijben, M.; Rijnders, G.; Blank, D. H. A.] Univ Twente, Fac Sci & Technol, MESA Inst Nanotechnol, NL-7500 AE Enschede, Netherlands.
[Rotenberg, E.; Bostwick, A.; Gullikson, E. M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Ueda, S.; Yamashita, Y.; Kobayashi, K.] Natl Inst Mat Sci, NIMS Beamline Stn SPring 8, Mikazuki, Hyogo 6795148, Japan.
[de Groot, F. M. F.] Univ Utrecht, Dept Chem, NL-3584 CA Utrecht, Netherlands.
[Ramesh, R.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Ramesh, R.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
RP Gray, AX (reprint author), Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
RI Institute (DINS), Debye/G-7730-2014; Gray, Alexander/F-9267-2011; Balke,
Benjamin/A-5958-2009; MSD, Nanomag/F-6438-2012; UEDA,
Shigenori/H-2991-2011; de Groot, Frank/A-1918-2009; Bostwick,
Aaron/E-8549-2010; Papp, Christian /N-7738-2013; Rotenberg,
Eli/B-3700-2009; YAMASHITA, Yoshiyuki/H-2704-2011
OI Balke, Benjamin/0000-0003-3275-0634; Papp, Christian
/0000-0002-1733-4387; Rotenberg, Eli/0000-0002-3979-8844;
FU Office of Science, Office of Basic Energy Sciences, Materials Sciences
and Engineering Division, of the U.S. Department of Energy
[DE-AC02-05CH11231]; Ministry of Education, Culture, Sports, Science and
Technology (MEXT), Japan
FX The authors acknowledge support from the Director, Office of Science,
Office of Basic Energy Sciences, Materials Sciences and Engineering
Division, of the U.S. Department of Energy under Contract No.
DE-AC02-05CH11231. The authors are also grateful to HiSOR, Hiroshima
University and JAEA/SPring-8 for the development of hard x-ray
photoelectron spectroscopy at BL15XU of SPring-8. The experiments at
BL15XU were performed under the approval of NIMS Beamline Station
(Proposal No. 2009A4906). This work was partially supported by the
Nanotechnology Network Project, the Ministry of Education, Culture,
Sports, Science and Technology (MEXT), Japan.
NR 36
TC 34
Z9 34
U1 2
U2 49
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 16
PY 2010
VL 82
IS 20
AR 205116
DI 10.1103/PhysRevB.82.205116
PG 9
WC Physics, Condensed Matter
SC Physics
GA 680TO
UT WOS:000284258300004
ER
PT J
AU Jo, JY
Sichel, RJ
Dufresne, EM
Lee, HN
Nakhmanson, SM
Evans, PG
AF Jo, Ji Young
Sichel, Rebecca J.
Dufresne, Eric M.
Lee, Ho Nyung
Nakhmanson, Serge M.
Evans, Paul G.
TI Component-specific electromechanical response in a
ferroelectric/dielectric superlattice
SO PHYSICAL REVIEW B
LA English
DT Article
ID X-RAY-DIFFRACTION; POLARIZATION ENHANCEMENT; PIEZOELECTRICITY
AB The electronic and electromechanical properties of complex oxide superlattices are closely linked to the evolution of the structure and electrical polarization of the component layers in applied electric fields. Efforts to deduce the responses of the individual components of the superlattice to applied fields have focused on theoretical approaches because of the limitations of available experimental techniques. Time-resolved x-ray microdiffraction provides a precise crystallographic probe of each component using the shift in wave vector and change in intensity of superlattice satellite reflections. We report in detail the methods to measure and analyze the x-ray diffraction patterns in applied electric field and their application to a 2-unit-cell BaTiO(3)/4-unit-cell CaTiO(3) superlattice. We find that the overall piezoelectric distortion is shared between the two components. Theoretical predictions of the electromechanical properties of a superlattice with the same composition constrained to tetragonal symmetry are in excellent agreement with the experiments. Lattice instability analysis, however, suggests that the low-temperature ground state could exhibit antiferrodistortive rotations of TiO(6) octahedra within and/or at the interfaces of the CaTiO(3) component.
C1 [Jo, Ji Young; Sichel, Rebecca J.; Evans, Paul G.] Univ Wisconsin, Dept Mat Sci & Engn, Madison, WI 53706 USA.
[Jo, Ji Young; Sichel, Rebecca J.; Evans, Paul G.] Univ Wisconsin, Mat Sci Program, Madison, WI 53706 USA.
[Dufresne, Eric M.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Lee, Ho Nyung] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Nakhmanson, Serge M.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Jo, JY (reprint author), Univ Wisconsin, Dept Mat Sci & Engn, 1509 Univ Ave, Madison, WI 53706 USA.
RI Evans, Paul/A-9260-2009; Nakhmanson, Serge/A-6329-2014; Lee, Ho
Nyung/K-2820-2012
OI Evans, Paul/0000-0003-0421-6792; Lee, Ho Nyung/0000-0002-2180-3975
FU U.S. Department of Energy [DE-FG02-04ER46147, DE-AC02-06CH11357]; U.S.
National Science Foundation [DMR-0705370]; Materials Sciences and
Engineering Division, U.S. Department of Energy [DE-AC05-00OR22725]
FX P.G.E. acknowledges support by the U.S. Department of Energy through
Contract No. DE-FG02-04ER46147 and by the U.S. National Science
Foundation through Grant No. DMR-0705370. H.N.L. acknowledges support
from the Materials Sciences and Engineering Division, U.S. Department of
Energy through Contract No. DE-AC05-00OR22725. S.M.N. and the use of the
Advanced Photon Source were supported by the U.S. Department of Energy
under Contract No. DE-AC02-06CH11357.
NR 37
TC 5
Z9 5
U1 0
U2 13
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 16
PY 2010
VL 82
IS 17
AR 174116
DI 10.1103/PhysRevB.82.174116
PG 10
WC Physics, Condensed Matter
SC Physics
GA 680TG
UT WOS:000284257200005
ER
PT J
AU Koshelev, AE
AF Koshelev, A. E.
TI Stability of dynamic coherent states in intrinsic Josephson-junction
stacks near internal cavity resonance
SO PHYSICAL REVIEW B
LA English
DT Article
ID I-V CHARACTERISTICS; PHASE-LOCKING; ARRAYS; SUPERCONDUCTORS; RADIATION;
BI2SR2CACU2O8+DELTA; MILLIMETER; EMISSION
AB Stacks of intrinsic Josephson junctions in the resistive state can by efficiently synchronized by the internal cavity mode resonantly excited by the Josephson oscillations. We study the stability of dynamic coherent states near the resonance with respect to small perturbations. Three states are considered: the homogeneous and alternating-kink states in zero magnetic field and the homogeneous state in the magnetic field near the value corresponding to half flux quantum per junction. We found two possible instabilities related to the short-scale and long-scale perturbations. The homogeneous state in modulated junction is typically unstable with respect to the short-scale alternating phase deformations unless the Josephson current is completely suppressed in one half of the stack. The kink state is stable with respect to such deformations and homogeneous state in the magnetic field is only stable within a certain range of frequencies and fields. Stability with respect to the long-range deformations is controlled by resonance excitations of fast modes at finite wave vectors and typically leads to unstable range of the wave vectors. This range shrinks with approaching the resonance and increasing the in-plane dissipation. As a consequence, in finite-height stacks the stability frequency range near the resonance increases with decreasing the height.
C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Koshelev, AE (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
RI Koshelev, Alexei/K-3971-2013
OI Koshelev, Alexei/0000-0002-1167-5906
FU U.S. Department of Energy Office of Science laboratory
[DE-AC02-06CH11357]
FX I would like to acknowledge many useful discussions with U. Welp, L.
Bulaevskii, X. Hu, S. Z. Lin, K. Gray, L. Ozyuzer, K. Kadowaki, H. Wang,
and R. Kleiner. This work was supported by UChicago Argonne, LLC,
operator of Argonne National Laboratory, a U.S. Department of Energy
Office of Science laboratory, operated under Contract No.
DE-AC02-06CH11357.
NR 37
TC 35
Z9 35
U1 0
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 16
PY 2010
VL 82
IS 17
AR 174512
DI 10.1103/PhysRevB.82.174512
PG 14
WC Physics, Condensed Matter
SC Physics
GA 680TG
UT WOS:000284257200009
ER
PT J
AU Shchegolkov, DY
Azad, AK
O'Hara, JF
Simakov, EI
AF Shchegolkov, D. Yu.
Azad, A. K.
O'Hara, J. F.
Simakov, E. I.
TI Perfect subwavelength fishnetlike metamaterial-based film terahertz
absorbers
SO PHYSICAL REVIEW B
LA English
DT Article
AB We present two different designs of robust, easily manufactured metamaterial-based films of subwavelength thickness capable of full absorption of incident terahertz radiation at certain frequencies. Both designs allow a choice between the total absorption of all polarizations or only one linear polarization while the other polarization is reflected. Even if the films are optimized for normal incidence, the absorption remains greater than 99% for angles up to similar to 35 degrees in the TE and up to similar to 65 degrees in the TM case. In the first design, the maximum absorption frequency shifts considerably with angle, and in the second design it is independent of angle.
C1 [Shchegolkov, D. Yu.; Azad, A. K.; O'Hara, J. F.; Simakov, E. I.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Shchegolkov, DY (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
RI Azad, Abul/B-1163-2011;
OI Azad, Abul/0000-0002-7784-7432; Shchegolkov, Dmitry/0000-0002-0721-3397;
Simakov, Evgenya/0000-0002-7483-1152
FU U.S. Department of Energy through the LANL/LDRD
FX The authors benefitted from discussions with Antoinette Taylor and N.A.
Moody and gratefully acknowledge the support of the U.S. Department of
Energy through the LANL/LDRD Program.
NR 17
TC 100
Z9 104
U1 4
U2 50
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 16
PY 2010
VL 82
IS 20
AR 205117
DI 10.1103/PhysRevB.82.205117
PG 6
WC Physics, Condensed Matter
SC Physics
GA 680TO
UT WOS:000284258300005
ER
PT J
AU Felizardo, M
Morlat, T
Fernandes, AC
Girard, TA
Marques, JG
Ramos, AR
Auguste, M
Boyer, D
Cavaillou, A
Sudre, C
Poupeney, J
Payne, RF
Miley, HS
Puibasset, J
AF Felizardo, M.
Morlat, T.
Fernandes, A. C.
Girard, T. A.
Marques, J. G.
Ramos, A. R.
Auguste, M.
Boyer, D.
Cavaillou, A.
Sudre, C.
Poupeney, J.
Payne, R. F.
Miley, H. S.
Puibasset, J.
CA SIMPLE Collaboration
TI First Results of the Phase II SIMPLE Dark Matter Search
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID CHAMBER
AB We report results of a 14.1 kgd measurement with 15 superheated droplet detectors of total active mass 0.208 kg, comprising the first stage of a 30 kg d Phase II experiment. In combination with the results of the neutron-spin sensitive XENON10 experiment, these results yield a limit of |a(p)| < 0.32 for M-W = 50 GeV/c(2) on the spin-dependent sector of weakly interacting massive particle- nucleus interactions with a 50% reduction in the previously allowed region of the phase space, formerly defined by XENON, KIMS, and PICASSO. In the spin-independent sector, a limit of 2.3 x 10(-5) pb at M-W 45 GeV/c(2) is obtained.
C1 [Felizardo, M.; Morlat, T.; Fernandes, A. C.; Girard, T. A.; Marques, J. G.; Ramos, A. R.] Univ Lisbon, Ctr Fis Nucl, P-1649003 Lisbon, Portugal.
[Felizardo, M.] Univ Nova Lisboa, Dept Phys, P-2829516 Caparica, Portugal.
[Felizardo, M.; Fernandes, A. C.; Marques, J. G.; Ramos, A. R.] Inst Tecnol & Nucl, P-2686953 Sacavem, Portugal.
[Morlat, T.; Girard, T. A.] Univ Nova Lisboa, Dept Phys, P-1749016 Lisbon, Portugal.
[Auguste, M.; Boyer, D.; Cavaillou, A.; Sudre, C.; Poupeney, J.] Observ Cote Azur, Lab Souterrain Bas Bruit, F-84400 Rustrel Pays Dapt, France.
[Payne, R. F.; Miley, H. S.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Puibasset, J.] CNRS, Ctr Rech Mat Divisee, F-45071 Orleans 02, France.
[Puibasset, J.] Univ Orleans, F-45071 Orleans 02, France.
RP Girard, TA (reprint author), Univ Lisbon, Ctr Fis Nucl, P-1649003 Lisbon, Portugal.
EM criodets@cii.fc.ul.pt
RI Lopes Ramos Wahl, Ana Rita/C-1337-2012; Marques, Jose/H-6145-2011;
Fernandes, Ana/A-6974-2013; Felizardo, Miguel/N-1798-2015;
OI Lopes Ramos Wahl, Ana Rita/0000-0001-6652-7698; Marques,
Jose/0000-0002-3724-5664; Felizardo, Miguel/0000-0002-6458-1428;
Fernandes, Ana/0000-0001-6880-7634; Girard, Thomas/0000-0003-4113-880X
FU Portuguese Foundation for Science and Technology (FCT)
[PDTC/FIS/83424/2006]; Nuclear Physics Center of the University of
Lisbon
FX We thank Dr. F. Giuliani for numerous suggestions and advice, Dr. P.
Loaiza for the radioassays of the site concrete and steel, Eng J.
Albuquerque of CRIOLAB, Lda for technical assistance during the
measurement staging, and the Casolis for their hospitality during our
various residences near the LSBB. This work was supported in part by
Grant No. PDTC/FIS/83424/2006 of the Portuguese Foundation for Science
and Technology (FCT), and by the Nuclear Physics Center of the
University of Lisbon.
NR 24
TC 53
Z9 53
U1 1
U2 12
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 16
PY 2010
VL 105
IS 21
AR 211301
DI 10.1103/PhysRevLett.105.211301
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 680UB
UT WOS:000284259600003
PM 21231283
ER
PT J
AU Yokoyama, T
Masujin, K
Schmerr, MJ
Shu, YJ
Okada, H
Iwamaru, Y
Imamura, M
Matsuura, Y
Murayama, Y
Mohri, S
AF Yokoyama, Takashi
Masujin, Kentaro
Schmerr, Mary Jo
Shu, Yujing
Okada, Hiroyuki
Iwamaru, Yoshifumi
Imamura, Morikazu
Matsuura, Yuichi
Murayama, Yuichi
Mohri, Shirou
TI Intraspecies Prion Transmission Results in Selection of Sheep Scrapie
Strains
SO PLOS ONE
LA English
DT Article
ID BOVINE SPONGIFORM ENCEPHALOPATHY; CREUTZFELDT-JAKOB-DISEASE; MOLECULAR
ANALYSIS; NATURAL SCRAPIE; TRANSGENIC MICE; INTERSPECIES TRANSMISSION;
MONOCLONAL-ANTIBODIES; ABNORMAL ISOFORM; PROTEIN; BSE
AB Background: Sheep scrapie is caused by multiple prion strains, which have been classified on the basis of their biological characteristics in inbred mice. The heterogeneity of natural scrapie prions in individual sheep and in sheep flocks has not been clearly defined.
Methodology/Principal Findings: In this study, we intravenously injected 2 sheep (Suffolk and Corriedale) with material from a natural case of sheep scrapie (Suffolk breed). These 3 sheep had identical prion protein (PrP) genotypes. The protease-resistant core of PrP (PrPres) in the experimental Suffolk sheep was similar to that in the original Suffolk sheep. In contrast, PrPres in the Corriedale sheep differed from the original PrPres but resembled the unusual scrapie isolate, CH1641. This unusual PrPres was not detected in the original sheep. The PrPres distributions in the brain and peripheral tissues differed between the 2 breeds of challenged sheep. A transmission study in wild-type and TgBoPrP mice, which overexpressing bovine PrP, led to the selection of different prion strains. The pathological features of prion diseases are thought to depend on the dominantly propagated strain.
Conclusions/Significance: Our results indicate that prion strain selection occurs after both inter-and intraspecies transmission. The unusual scrapie prion was a hidden or an unexpressed component in typical sheep scrapie.
C1 [Yokoyama, Takashi; Masujin, Kentaro; Shu, Yujing; Okada, Hiroyuki; Iwamaru, Yoshifumi; Imamura, Morikazu; Matsuura, Yuichi; Murayama, Yuichi; Mohri, Shirou] Natl Inst Anim Hlth, Pr Dis Res Ctr, Tsukuba, Ibaraki 305, Japan.
[Schmerr, Mary Jo] Iowa State Univ, Ames Lab, Ames, IA USA.
RP Yokoyama, T (reprint author), Natl Inst Anim Hlth, Pr Dis Res Ctr, Tsukuba, Ibaraki 305, Japan.
EM tyoko@affrc.go.jp
FU Ministry of Agriculture, Forestry, and Fisheries of Japan; Ministry of
Health, Labour and Welfare of Japan; Bio-oriented Technology Research
Advancement Institution ( Tokyo, Japan)
FX This work was supported by grants from the BSE control project of the
Ministry of Agriculture, Forestry, and Fisheries of Japan, and in part
by grants from the Ministry of Health, Labour and Welfare of Japan and
in part by grants from Bio-oriented Technology Research Advancement
Institution ( Tokyo, Japan). The funders had no role in study design,
data collection and analysis, decision to publish, or preparation of the
manuscript.
NR 50
TC 19
Z9 19
U1 0
U2 2
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD NOV 16
PY 2010
VL 5
IS 11
AR e15450
DI 10.1371/journal.pone.0015450
PG 10
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 680TI
UT WOS:000284257400024
PM 21103326
ER
PT J
AU Nogales, E
AF Nogales, Eva
TI When cytoskeletal worlds collide
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Editorial Material
ID PLASMID; PROKARYOTES; FILAMENTS; MECHANISM; SEPTINS; PROTEIN; COMPLEX;
PARM; FTSZ
C1 [Nogales, Eva] Univ Calif Berkeley, Howard Hughes Med Inst, Dept Mol & Cell Biol, Berkeley, CA 94720 USA.
[Nogales, Eva] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Nogales, E (reprint author), Univ Calif Berkeley, Howard Hughes Med Inst, Dept Mol & Cell Biol, Berkeley, CA 94720 USA.
EM enogales@lbl.gov
FU Howard Hughes Medical Institute
NR 19
TC 4
Z9 4
U1 0
U2 1
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD NOV 16
PY 2010
VL 107
IS 46
BP 19609
EP 19610
DI 10.1073/pnas.1014665107
PG 2
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 680UT
UT WOS:000284261800004
PM 21059902
ER
PT J
AU Thomson, AM
Calvin, KV
Chini, LP
Hurtt, G
Edmonds, JA
Bond-Lamberty, B
Frolking, S
Wise, MA
Janetos, AC
AF Thomson, Allison M.
Calvin, Katherine V.
Chini, Louise P.
Hurtt, George
Edmonds, James A.
Bond-Lamberty, Ben
Frolking, Steve
Wise, Marshall A.
Janetos, Anthony C.
TI Climate mitigation and the future of tropical landscapes
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE agricultural productivity; climate change; integrated assessment; land
use change
ID LAND-USE CHANGE; RESIDUE BIOMASS; FORESTS; ENERGY; DEFORESTATION;
EMISSIONS; BOREAL; AMAZON; GENERATION; TEMPERATE
AB Land-use change to meet 21st-century demands for food, fuel, and fiber will depend on many interactive factors, including global policies limiting anthropogenic climate change and realized improvements in agricultural productivity. Climate-change mitigation policies will alter the decision-making environment for land management, and changes in agricultural productivity will influence cultivated land expansion. We explore to what extent future increases in agricultural productivity might offset conversion of tropical forest lands to crop lands under a climate mitigation policy and a contrasting no-policy scenario in a global integrated assessment model. The Global Change Assessment Model is applied here to simulate a mitigation policy that stabilizes radiative forcing at 4.5 Wm(-2) ( approximately 526 ppm CO(2)) in the year 2100 by introducing a price for all greenhouse gas emissions, including those from land use. These scenarios are simulated with several cases of future agricultural productivity growth rates and the results downscaled to produce gridded maps of potential land-use change. We find that tropical forests are preserved near their present-day extent, and bioenergy crops emerge as an effective mitigation option, only in cases in which a climate mitigation policy that includes an economic price for land-use emissions is in place, and in which agricultural productivity growth continues throughout the century. We find that idealized land-use emissions price assumptions are most effective at limiting deforestation, even when cropland area must increase to meet future food demand. These findings emphasize the importance of accounting for feedbacks from land-use change emissions in global climate change mitigation strategies.
C1 [Thomson, Allison M.; Calvin, Katherine V.; Hurtt, George; Edmonds, James A.; Bond-Lamberty, Ben; Wise, Marshall A.; Janetos, Anthony C.] Univ Maryland, Pacific NW Natl Lab, Joint Global Change Res Inst, College Pk, MD 20740 USA.
[Chini, Louise P.; Hurtt, George] Univ Maryland, Dept Geog, College Pk, MD 20740 USA.
[Frolking, Steve] Univ New Hampshire, Inst Study Earth Oceans & Space, Complex Syst Res Ctr, Durham, NH 03824 USA.
RP Thomson, AM (reprint author), Univ Maryland, Pacific NW Natl Lab, Joint Global Change Res Inst, College Pk, MD 20740 USA.
EM allison.thomson@pnl.gov
RI Thomson, Allison/B-1254-2010; Bond-Lamberty, Ben/C-6058-2008; Hurtt,
George/A-8450-2012;
OI Bond-Lamberty, Ben/0000-0001-9525-4633; Calvin,
Katherine/0000-0003-2191-4189
FU US Department of Energy's Office of Science; US Environmental Protection
Agency; US National Aeronautics and Space Administration
FX We thank Elizabeth Malone and three anonymous reviewers for valuable
feedback on an earlier version of this paper. This study was supported
in part by the US Department of Energy's Office of Science, the US
Environmental Protection Agency, and the US National Aeronautics and
Space Administration.
NR 47
TC 37
Z9 37
U1 3
U2 30
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD NOV 16
PY 2010
VL 107
IS 46
BP 19633
EP 19638
DI 10.1073/pnas.0910467107
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 680UT
UT WOS:000284261800010
PM 20921413
ER
PT J
AU Braun, A
Wang, HX
Funk, T
Seifert, S
Cairns, EJ
AF Braun, Artur
Wang, Hongxin
Funk, Tobias
Seifert, Soenke
Cairns, Elton J.
TI Depth profile analysis of a cycled lithium ion manganese oxide battery
electrode via the valence state of manganese, with soft X-ray emission
spectroscopy
SO JOURNAL OF POWER SOURCES
LA English
DT Article
DE Lithium battery; X-ray spectroscopy; Depth profile; Manganese oxide;
Valence state
ID ABSORPTION; SCATTERING; SPINEL; FILMS; CELL; XPS
AB A 50-mu m thick lithium manganese oxide (parent material LiMn(2)O(4)) battery electrode (positive electrode; cathode) was charged, slightly discharged and then sliced with a scotch tape test-type method. A selected number of slices was then subject to synchrotron soft X-ray emission spectroscopy near the Mn L(alpha,beta) emission lines in order to determine changes in the oxidation state of the manganese as a function of sampling depth. The emission spectra showed a minute yet noticeable and systematic chemical shift of up to 0.25 eV between the layer near the current collector and the layer near the electrolyte separator. The average manganese oxidation state near the separator was smaller than the average oxidation state in the interior of the electrode, or near the current collector. Since the data provide an oxidation state depth profile of the cathode, a Li(+) depth profile can be inferred. This method provides information on the spatial chemical inhomogeneity of electrodes prior to and after electrochemical cycling, and thus can aid in degradation studies. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Braun, Artur] Swiss Fed Labs Mat Sci & Technol, Empa, Lab High Performance Ceram, CH-8600 Dubendorf, Switzerland.
[Braun, Artur; Cairns, Elton J.] Ernest Orlando Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA.
[Wang, Hongxin; Funk, Tobias] Ernest Orlando Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
[Wang, Hongxin] Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA.
[Seifert, Soenke] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Cairns, Elton J.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
RP Braun, A (reprint author), Swiss Fed Labs Mat Sci & Technol, Empa, Lab High Performance Ceram, CH-8600 Dubendorf, Switzerland.
EM artur.braun@alumni.ethz.ch
RI BRAUN, Artur/A-1154-2009; Cairns, Elton/E-8873-2012
OI BRAUN, Artur/0000-0002-6992-7774; Cairns, Elton/0000-0002-1179-7591
FU Office of Basic Energy Sciences, Chemical Sciences Division of the U.S.
Department of Energy [DE-AC03-76SF00098]; U.S. Department of Energy,
Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357];
Office of Science/BES, of the U.S. DoE [DE-AC02-05CH11231]; European
Commission [CT-2006-042095]
FX This work was supported by the Director, Office of Basic Energy
Sciences, Chemical Sciences Division of the U.S. Department of Energy,
under Contract DE-AC03-76SF00098. Use of the Advanced Photon Source at
Argonne National Laboratory was supported by the U.S. Department of
Energy, Office of Science, Office of Basic Energy Sciences, under
Contract No. DE-AC02-06CH11357. The ALS is supported by the Director,
Office of Science/BES, of the U.S. DoE, # DE-AC02-05CH11231. Financial
support for A.B. by the European Commission (MIRG # CT-2006-042095) is
acknowledged.
NR 19
TC 2
Z9 2
U1 0
U2 28
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-7753
J9 J POWER SOURCES
JI J. Power Sources
PD NOV 15
PY 2010
VL 195
IS 22
SI SI
BP 7644
EP 7648
DI 10.1016/j.jpowsour.2010.05.053
PG 5
WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials
Science, Multidisciplinary
SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science
GA 639KX
UT WOS:000280974800022
ER
PT J
AU Capdevila, C
Miller, MK
Toda, I
Chao, J
AF Capdevila, C.
Miller, M. K.
Toda, I.
Chao, J.
TI Influence of the alpha-alpha ' phase separation on the tensile
properties of Fe-base ODS PM 2000 alloy
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE Mechanical characterization; Ferrous alloy; Mechanical alloying;
Tomography; Spinodal decomposition
ID 475 DEGREES C; SPINODAL DECOMPOSITION; CHROMIUM ALLOY; ATOMIC-LEVEL;
RECRYSTALLIZATION; DEFORMATION; POROSITY; PM2000; TEMPERATURE; MODULUS
AB The yield and ultimate tensile strengths of an ultrafine grained, oxide dispersion strengthened (ODS) PM 2000 alloy increased during aging at 475 degrees C. Atom probe tomography and X-ray diffraction analysis revealed that the decrease in lattice parameter and the increases in the yield and ultimate tensile strengths were correlated with phase separation into Fe-rich alpha and Cr-enriched alpha' phases. The lattice misfit between the emerging alpha and alpha' domains and the resulting elastic strain, and the increment of the elastic modulus with aging time due to the corresponding decrease of lattice parameter during alpha-alpha' phase separation, can be regarded as the main causes of hardening. (c) 2010 Elsevier B.V. All rights reserved.
C1 [Capdevila, C.; Toda, I.; Chao, J.] Ctr Nacl Invest Met CENIM CSIC, Dept Met Phys, MATERALIA Grp, Madrid 28040, Spain.
[Miller, M. K.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Capdevila, C (reprint author), Ctr Nacl Invest Met CENIM CSIC, Dept Met Phys, MATERALIA Grp, Avda Gregorio del Amo 8, Madrid 28040, Spain.
EM ccm@cenim.csic.es
RI Capdevila, Carlos/B-6970-2015
OI Capdevila, Carlos/0000-0002-1869-4085
FU Spanish Ministerio de Ciencia e Innovacion [ENE2009 13766-C04-01];
Scientific User Facilities Division, Office of Basic Energy Sciences,
U.S. Department of Energy
FX PM 2000 (TM) is a trademark of Plansee GmbH. LEAP (R) is a registered
trademark of Imago Scientific Instruments. The authors acknowledge
financial support from the Spanish Ministerio de Ciencia e Innovacion
through the Plan Nacional 2009 (ENE2009 13766-C04-01). Research at the
Oak Ridge National Laboratory SHaRE User Facility was sponsored by the
Scientific User Facilities Division, Office of Basic Energy Sciences,
U.S. Department of Energy.
NR 36
TC 13
Z9 13
U1 0
U2 12
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD NOV 15
PY 2010
VL 527
IS 29-30
BP 7931
EP 7938
DI 10.1016/j.msea.2010.08.083
PG 8
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 676EJ
UT WOS:000283892600063
ER
PT J
AU Angell, CT
Yee, R
Joshi, TH
Swanberg, E
Norman, EB
Hicks, CL
Klimenko, A
Korbly, S
Wilson, C
Kulp, WD
Warren, GA
Bray, TH
Copping, R
Glans, PA
Tyliszczak, T
Shuh, DK
AF Angell, C. T.
Yee, R.
Joshi, T. H.
Swanberg, E.
Norman, E. B.
Hicks, C. L., Jr.
Klimenko, A.
Korbly, S.
Wilson, C.
Kulp, W. D.
Warren, G. A.
Bray, T. H.
Copping, R.
Glans, P. A.
Tyliszczak, T.
Shuh, D. K.
TI Nuclear resonance fluorescence of Np-237
SO PHYSICAL REVIEW C
LA English
DT Article
AB Measurements of states excited by nuclear resonance fluorescence in Np-237 were performed using a bremsstrahlung beam. Fifteen new states were observed in the region of 1.7 to 2.5 MeV. They can be used to detect or assay Np-237 nondestructively for applications in security and safeguards. The states are populated with similar strength as those states found previously in U-235 and Pu-239 but are spread out more in energy.
C1 [Angell, C. T.; Yee, R.; Joshi, T. H.; Swanberg, E.; Norman, E. B.] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA.
[Hicks, C. L., Jr.; Klimenko, A.; Korbly, S.; Wilson, C.] Passport Syst Inc, Billerica, MA 01862 USA.
[Kulp, W. D.] Georgia Inst Technol, Dept Phys, Atlanta, GA 30332 USA.
[Warren, G. A.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Bray, T. H.; Copping, R.; Glans, P. A.; Tyliszczak, T.; Shuh, D. K.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
[Norman, E. B.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Angell, CT (reprint author), Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA.
EM cangell@nuc.berkeley.edu
OI Angell, Christopher/0000-0003-0333-6557
FU US Department of Homeland Security; Office of Science, Office of Basic
Energy Sciences and the Division of Chemical Sciences, Geosciences, and
Biosciences of the US Department of Energy at Lawrence Berkeley National
Laboratory [DE-AC02-05CH11231]
FX This research was funded by the US Department of Homeland Security.
Parts of this research and the ALS were supported by the Director,
Office of Science, Office of Basic Energy Sciences and the Division of
Chemical Sciences, Geosciences, and Biosciences of the US Department of
Energy at Lawrence Berkeley National Laboratory under Contract No.
DE-AC02-05CH11231.
NR 15
TC 4
Z9 4
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
EI 1089-490X
J9 PHYS REV C
JI Phys. Rev. C
PD NOV 15
PY 2010
VL 82
IS 5
AR 054310
DI 10.1103/PhysRevC.82.054310
PG 6
WC Physics, Nuclear
SC Physics
GA 680BI
UT WOS:000284205900003
ER
PT J
AU Marginean, I
Page, JS
Tolmachev, AV
Tang, KQ
Smith, RD
AF Marginean, Ioan
Page, Jason S.
Tolmachev, Aleksey V.
Tang, Keqi
Smith, Richard D.
TI Achieving 50% Ionization Efficiency in Subambient Pressure Ionization
with Nanoelectrospray
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID ELECTRODYNAMIC ION FUNNEL; CAPILLARY-ZONE-ELECTROPHORESIS;
HIGHLY-CHARGED DROPLETS; MASS-SPECTROMETRY; ELECTROSPRAY-IONIZATION;
LIQUID-CHROMATOGRAPHY; INTERFACE; TRANSMISSION; SENSITIVITY; EVAPORATION
AB Inefficient ionization and poor transmission of the charged species produced by an electrospray from the ambient pressure mass spectrometer source into the high vacuum region required for mass analysis significantly limits achievable sensitivity. Here, we present evidence that, when operated at flow rates of 50 nL/min, a new electrospray-based ion source operated at similar to 20 Torr can deliver similar to 50% of the analyte ions initially in the solution as charged desolvated species into the rough vacuum region of mass spectrometers. The ion source can be tuned to optimize the analyte signal for readily ionized species while reducing the background contribution.
C1 [Marginean, Ioan; Page, Jason S.; Tolmachev, Aleksey V.; Tang, Keqi; Smith, Richard D.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA.
RP Smith, RD (reprint author), Pacific NW Natl Lab, Div Biol Sci, POB 999, Richland, WA 99352 USA.
EM rds@pnl.gov
RI Marginean, Ioan/A-4183-2008; Smith, Richard/J-3664-2012
OI Marginean, Ioan/0000-0002-6693-0361; Smith, Richard/0000-0002-2381-2349
FU NIH National Center for Research Resources [RR018522]; DOE
[DE-AC05-76RLO 1830]
FX This research was supported by the NIH National Center for Research
Resources (RR018522). Experimental portions were performed in the
Environmental Molecular Sciences Laboratory, a DOE national scientific
user facility located at the PNNL in Richland, Washington. PNNL is a
multiprogram national laboratory operated by Battelle for the DOE under
Contract DE-AC05-76RLO 1830.
NR 38
TC 22
Z9 23
U1 4
U2 35
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
J9 ANAL CHEM
JI Anal. Chem.
PD NOV 15
PY 2010
VL 82
IS 22
BP 9344
EP 9349
DI 10.1021/ac1019123
PG 6
WC Chemistry, Analytical
SC Chemistry
GA 678MQ
UT WOS:000284080500032
PM 21028835
ER
PT J
AU Perdian, DC
Lee, YJ
AF Perdian, D. C.
Lee, Young Jin
TI Imaging MS Methodology for More Chemical Information in Less Data
Acquisition Time Utilizing a Hybrid Linear Ion Trap-Orbitrap Mass
Spectrometer
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID ARABIDOPSIS-THALIANA; TISSUE-SECTIONS; ELECTROSPRAY-IONIZATION;
STRUCTURAL-CHARACTERIZATION; ATMOSPHERIC-PRESSURE; SMALL MOLECULES;
BRAIN-TISSUE; MATRIX; METABOLITES; PROTEINS
AB A novel mass spectrometric imaging method is developed to reduce the data acquisition time and provide rich chemical information using a hybrid linear ion trap-orbitrap mass spectrometer. In this method, the linear ion trap and orbitrap are used in tandem to reduce the acquisition time by incorporating multiple linear ion trap scans during an orbitrap scan utilizing a spiral raster step plate movement The data acquisition time was decreased by 43-49% in the current experiment compared to that of orbitrap-only scans; however, 75% or more time could be saved for higher mass resolution and with a higher repetition rate laser. Using this approach, a high spatial resolution of 10 mu m was maintained at ion trap imaging, while orbitrap spectra were acquired at a lower spatial resolution, 20-40 mu m, all with far less data acquisition time. Furthermore, various MS imaging methods were developed by interspersing MS/MS and MS(n) ion trap scans during orbitrap scans to provide more analytical information on the sample. This method was applied to differentiate and localize structural isomers of several flavonol glycosides from an Arabidopsis flower petal in which MS/MS, MS(n), ion trap, and orbitrap images were all acquired in a single data acquisition.
C1 [Perdian, D. C.; Lee, Young Jin] US DOE, Ames Lab, Ames, IA 50011 USA.
[Lee, Young Jin] Iowa State Univ Sci & Technol, Dept Chem, Ames, IA 50011 USA.
RP Lee, YJ (reprint author), US DOE, Ames Lab, Ames, IA 50011 USA.
EM yjlee@iastate.edu
RI Lee, Young Jin/F-2317-2011
OI Lee, Young Jin/0000-0002-2533-5371
FU U.S. Department of Energy (DOE), Office of Basic Energy Sciences,
Division of Chemical Sciences; DOE [DE-AC02-07CH11358]
FX We thank Basil Nikolau and Zhihong Song, Iowa State University of
Science and Technology, for providing the A. thaliana plant samples. We
also thank Maria Prieto-Conaway and Huy Bui, Thermo Scientific, for
helpful discussions and support regarding this work. This work was
supported by the U.S. Department of Energy (DOE), Office of Basic Energy
Sciences, Division of Chemical Sciences. The Ames Laboratory is operated
by the Iowa State University of Science and Technology under DOE
Contract DE-AC02-07CH11358.
NR 38
TC 37
Z9 37
U1 1
U2 22
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
J9 ANAL CHEM
JI Anal. Chem.
PD NOV 15
PY 2010
VL 82
IS 22
BP 9393
EP 9400
DI 10.1021/ac102017q
PG 8
WC Chemistry, Analytical
SC Chemistry
GA 678MQ
UT WOS:000284080500038
PM 20977220
ER
PT J
AU Bharadwaj, R
Chen, ZW
Datta, S
Holmes, BM
Sapra, R
Simmons, BA
Adams, PD
Singh, AK
AF Bharadwaj, Rajiv
Chen, Zhiwei
Datta, Supratim
Holmes, Bradley M.
Sapra, Rajat
Simmons, Blake A.
Adams, Paul D.
Singh, Anup K.
TI Microfluidic Glycosyl Hydrolase Screening for Biomass-to-Biofuel
Conversion
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID CAPILLARY-ZONE-ELECTROPHORESIS; CARBOHYDRATE GEL-ELECTROPHORESIS;
HIGH-RESOLUTION SEPARATION; 8-AMINONAPHTHALENE-1,3,6-TRISULFONIC ACID;
POLYSACCHARIDE ANALYSIS; ENZYMATIC-HYDROLYSIS; IONIC LIQUIDS;
OLIGOSACCHARIDES; SWITCHGRASS; MOBILITIES
AB The hydrolysis of biomass to fermentable sugars using glycosyl hydrolases such as cellulases and hemicellulases is a limiting and costly step in the conversion of biomass to biofuels. Enhancement in hydrolysis efficiency is necessary and requires improvement in both enzymes and processing strategies. Advances in both areas in turn strongly depend on the progress in developing high-throughput assays to rapidly and quantitatively screen a large number of enzymes and processing conditions. For example, the characterization of various cellodextrins and xylooligomers produced during the time course of saccharification is important in the design of suitable reactors, enzyme cocktail compositions, and biomass pretreatment schemes. We have developed a microfluidicchip-based assay for rapid and precise characterization of glycans and xylans resulting from biomass hydrolysis. The technique enables multiplexed separation of soluble cellodextrins and xylose oligomers in around 1 min (10-fold faster than HPLC). The microfluidic device was used to elucidate the mode of action of Tm_Ce15A, a novel cellulase from hyperthermophile Thermotoga maritima. The results demonstrate that the cellulase is active at 80 degrees C and effectively hydrolyzes cellodextrins and ionic-liquid-pretreated switchgrass and Avicel to glucose, cellobiose, and cellotriose. The proposed microscale approach is ideal for quantitative large-scale screening of enzyme libraries for biomass hydrolysis, for development of energy feedstocks, and for polysaccharide sequencing.
C1 [Bharadwaj, Rajiv; Adams, Paul D.; Singh, Anup K.] Joint BioEnergy Inst, Div Technol, Emeryville, CA 94608 USA.
[Bharadwaj, Rajiv; Chen, Zhiwei; Datta, Supratim; Holmes, Bradley M.; Sapra, Rajat; Simmons, Blake A.; Singh, Anup K.] Sandia Natl Labs, Livermore, CA 94551 USA.
[Chen, Zhiwei; Datta, Supratim; Holmes, Bradley M.; Sapra, Rajat; Simmons, Blake A.] Joint BioEnergy Inst, Deconstruct Div, Emeryville, CA 94608 USA.
[Adams, Paul D.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
[Adams, Paul D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Bharadwaj, R (reprint author), Joint BioEnergy Inst, Div Technol, Emeryville, CA 94608 USA.
EM rbharad@sandia.gov
RI Chen, Zhiwei/B-9727-2011; Adams, Paul/A-1977-2013;
OI Adams, Paul/0000-0001-9333-8219; Simmons, Blake/0000-0002-1332-1810
FU U.S. Department of Energy, Office of Science, Office of Biological and
Environmental Research [DE-AC02-05CH11231]; U.S. Department of Energy's
Nuclear Security Administration [DE-AC04-94AL85000]
FX Switchgrass (MPV2) was kindly provided by Dr. Ken Vogel of the U.S.
Department of Agriculture, Agricultural Research Service, Lincoln, NE.
We gratefully thank April Wong for her assistance with the
electrophoresis assays. Special thanks go to Ujvalla Gupta for the
stimulating discussions and encouragement. This work was part of the
Department of Energy Joint BioEnergy Institute (http://www.jbei.org)
supported by the U.S. Department of Energy, Office of Science, Office of
Biological and Environmental Research, through Contract
DE-AC02-05CH11231 between the Lawrence Berkeley National Laboratory and
the U.S. Department of Energy. Sandia is a multiprogram laboratory
operated by Sandia Corp., a Lockheed Martin company, for the U.S.
Department of Energy's Nuclear Security Administration under Contract
DE-AC04-94AL85000.
NR 39
TC 9
Z9 9
U1 1
U2 26
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
J9 ANAL CHEM
JI Anal. Chem.
PD NOV 15
PY 2010
VL 82
IS 22
BP 9513
EP 9520
DI 10.1021/ac102243f
PG 8
WC Chemistry, Analytical
SC Chemistry
GA 678MQ
UT WOS:000284080500054
PM 20964411
ER
PT J
AU Taylor, LC
Lavrik, NV
Sepaniak, MJ
AF Taylor, Lisa C.
Lavrik, Nickolay V.
Sepaniak, Michael J.
TI High-Aspect-Ratio, Silicon Oxide-Enclosed Pillar Structures in
Microfluidic Liquid Chromatography
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID PRESSURE-DRIVEN; ELECTRIC-FIELD; ELECTROKINETIC TRANSPORT; ARRAY
COLUMNS; SEPARATION; NANOCHANNELS; CHANNELS; DISPERSION; NANOCAPILLARY;
PERFORMANCE
AB The present paper discusses the ability to separate chemical species using high-aspect-ratio, silicon oxide-enclosed pillar arrays. These miniaturized chromatographic systems require smaller sample volumes, experience less flow resistance, and generate superior separation efficiency over traditional packed bed liquid chromatographic columns, improvements controlled by the increased order and decreased pore size of the systems. In our distinctive fabrication sequence, plasma-enhanced chemical vapor deposition (PECVD) of silicon oxide is used to alter the surface and structural properties of the pillars for facile surface modification while improving the pillar mechanical stability and increasing surface area. The separation behavior of model compounds within our pillar systems indicated an unexpected hydrophobic-like separation mechanism. The effects of organic modifier, ionic concentration, and pressure-driven flow rate were studied. A decrease in the organic content of the mobile phase increased peak resolution while detrimentally effecting peak shape. A resolution of 4.7 (RSD = 3.7%) was obtained for nearly perfect Gaussian shaped peaks, exhibiting plate heights as low as 1.1 and 1.8 mu m for fluorescein and sulforhodamine B, respectively. Contact angle measurements and DART mass spectrometry analysis indicate that our employed elastomeric soft bonding technique modifies pillar properties, creating a fortuitous stationary phase. This discovery provides evidence supporting the ability to easily functionalize PECVD oxide surfaces by gas-phase reactions.
C1 [Lavrik, Nickolay V.] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
[Taylor, Lisa C.; Sepaniak, Michael J.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37830 USA.
RP Lavrik, NV (reprint author), Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
EM msepaniak@utk.edu
RI Lavrik, Nickolay/B-5268-2011
OI Lavrik, Nickolay/0000-0002-9543-5634
FU Scientific User Facilities Division, Office of Basic Energy Sciences,
U.S. Department of Energy
FX A portion of this research at Oak Ridge National Laboratory's Center for
Nanophase Materials Sciences was sponsored by the Scientific User
Facilities Division, Office of Basic Energy Sciences, U.S. Department of
Energy. Special thanks to Stephen Gibson and the UTK Center for Mass
Sepctrometry and Dr. Bin Zhao for assistance with sample analysis.
NR 50
TC 23
Z9 23
U1 1
U2 22
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
J9 ANAL CHEM
JI Anal. Chem.
PD NOV 15
PY 2010
VL 82
IS 22
BP 9549
EP 9556
DI 10.1021/ac1023342
PG 8
WC Chemistry, Analytical
SC Chemistry
GA 678MQ
UT WOS:000284080500059
PM 21028836
ER
PT J
AU Nikolova, L
LaGrange, T
Reed, BW
Stern, MJ
Browning, ND
Campbell, GH
Kieffer, JC
Siwick, BJ
Rosei, F
AF Nikolova, L.
LaGrange, T.
Reed, B. W.
Stern, M. J.
Browning, N. D.
Campbell, G. H.
Kieffer, J-C.
Siwick, B. J.
Rosei, F.
TI Nanocrystallization of amorphous germanium films observed with
nanosecond temporal resolution
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID SILICON THIN-FILMS; IN-SITU; EXPLOSIVE CRYSTALLIZATION; GE FILMS
AB Using dynamic transmission electron microscopy we measure nucleation and growth rates during laser driven crystallization of amorphous germanium (a-Ge) films supported by silicon monoxide membranes. The films were crystallized using single 532 nm laser pulses at a fluence of similar to 128 mJ cm(-2). Devitrification processes initiate less than 20 ns after excitation and are complete within similar to 55 ns. The nucleation rate was estimated by tracking crystallite density as a function of time and reached a maximum of similar to 1.6 X 10(22) nuclei/cm(3) s. This study provides information on nanocrystallization phenomena in a-Ge, which is important for the implementation of nanostructured group IV semiconductors in optoelectronics devices. (C) 2010 American Institute of Physics. [doi:10.1063/1.3518069]
C1 [Nikolova, L.; Kieffer, J-C.; Rosei, F.] Inst Natl Rech Sci Energie Mat & Telecommun, Varennes, PQ J3C 1S2, Canada.
[LaGrange, T.; Reed, B. W.; Browning, N. D.; Campbell, G. H.] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94551 USA.
[Stern, M. J.; Siwick, B. J.] McGill Univ, Dept Phys, Ctr Phys Mat, Montreal, PQ H3A 2T8, Canada.
[Stern, M. J.; Siwick, B. J.] McGill Univ, Dept Chem, Ctr Phys Mat, Montreal, PQ H3A 2T8, Canada.
[Browning, N. D.] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA.
[Browning, N. D.] Univ Calif Davis, Dept Mol & Cellular Biol, Davis, CA 95616 USA.
[Rosei, F.] McGill Univ, Ctr Self Assembled Chem Struct, Montreal, PQ H3A 2K6, Canada.
RP Nikolova, L (reprint author), Inst Natl Rech Sci Energie Mat & Telecommun, Varennes, PQ J3C 1S2, Canada.
EM nikolova@emt.inrs.ca; lagrange2@llnl.gov; bradley.siwick@mcgill.ca;
rosei@emt.inrs.ca
RI Campbell, Geoffrey/F-7681-2010; Nikolova, Liliya/F-3932-2012; Reed,
Bryan/C-6442-2013;
OI Browning, Nigel/0000-0003-0491-251X
FU NSERC of Canada; FQRNT and MDEIE of Quebec; U.S. Department of Energy,
Office of Basic Energy Sciences, Division of Materials Sciences and
Engineering; LLNL [DE-AC52-07NA27344]; Canada Research Chairs; NSERC;
FQRNT
FX L.N., J.-C.K., B.J.S., and F. R. were supported by NSERC of Canada and
FQRNT and MDEIE of Quebec. T.LG., N.B., B. W. R., and G. C. were
supported through grants by the U.S. Department of Energy, Office of
Basic Energy Sciences, Division of Materials Sciences and Engineering
and work was performed under the auspices of the U.S. Department of
Energy by LLNL under Contract No. DE-AC52-07NA27344. B.J.S., J.-C.K.,
and F. R. acknowledge partial salary support from the Canada Research
Chairs program. L.N. acknowledges CGS Alexander Graham Bell from NSERC
and FQRNT for postgraduate fellowships.
NR 12
TC 20
Z9 20
U1 1
U2 12
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD NOV 15
PY 2010
VL 97
IS 20
AR 203102
DI 10.1063/1.3518069
PG 3
WC Physics, Applied
SC Physics
GA 684JC
UT WOS:000284545200050
ER
PT J
AU Park, H
Xu, Y
Varga, K
Qi, JB
Feldman, LC
Lupke, G
Tolk, N
AF Park, Heungman
Xu, Ying
Varga, Kalman
Qi, Jingbo
Feldman, Leonard C.
Luepke, Gunter
Tolk, Norman
TI Photon energy threshold for filling boron induced charge traps in SiO2
near the Si/SiO2 interface using second harmonic generation
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID TRANSPORT; SILICON
AB We report the experimental determination of the threshold energy for filling the B+ induced charge traps in SiO2 near the Si/SiO2 interface, using a two-color pump-probe approach involving internal photoemission and second harmonic generation. The threshold photon energy for filling the B+ induced charge trap is 2.61 eV (lambda=475 nm) for single photon excitation between the silicon valence band and the B+ trap energy level in SiO2. (C) 2010 American Institute of Physics. [doi:10.1063/1.3518070]
C1 [Park, Heungman; Xu, Ying; Varga, Kalman; Qi, Jingbo; Feldman, Leonard C.; Tolk, Norman] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA.
[Xu, Ying] Zomega Terahertz Corp, Troy, NY 12180 USA.
[Qi, Jingbo] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Feldman, Leonard C.] Rutgers State Univ, Inst Adv Mat Devices & Nanotechnol, New Brunswick, NJ 08901 USA.
[Luepke, Gunter] Coll William & Mary, Dept Appl Sci, Williamsburg, VA 23187 USA.
RP Park, H (reprint author), Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA.
EM heungman.park@vanderbilt.edu
RI Varga, Kalman/A-7102-2013
FU Department of Energy (DOE), Basic Energy Sciences [DE-FGO2-99ER45781]
FX This work was supported by Department of Energy (DOE), Basic Energy
Sciences, Grant No. DE-FGO2-99ER45781.
NR 19
TC 4
Z9 4
U1 1
U2 7
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD NOV 15
PY 2010
VL 97
IS 20
AR 202105
DI 10.1063/1.3518070
PG 3
WC Physics, Applied
SC Physics
GA 684JC
UT WOS:000284545200029
ER
PT J
AU Perkins, CL
Egaas, B
Repins, I
To, B
AF Perkins, Craig L.
Egaas, Brian
Repins, Ingrid
To, Bobby
TI Quantitative analysis of graded Cu(In1-x,Ga-x)Se-2 thin films by AES,
ICP-OES, and EPMA
SO APPLIED SURFACE SCIENCE
LA English
DT Article
DE CIGS; Auger; Electron probe microanalysis; Photovoltaics; Solar
ID RAY PHOTOELECTRON-SPECTROSCOPY; CU(IN,GA)SE-2 SOLAR-CELLS; MEAN FREE
PATHS; LAYERS; MICROANALYSIS; SURFACES; AUGER
AB The overall composition and the compositional profile of the quaternary semiconductor Cu(In1-x,Ga-x)Se-2 (CIGS) have strong effects on the performance of photovoltaic devices based on it. Recent work that has yielded similar to 20% efficient solar cells based on CIGS has forced extra attention on quantitative analysis of the absorber layers. In this paper we present details of the procedures used to generate detailed compositional profiles of graded Cu(In1-x, Gax) Se2 thin films by Auger electron spectroscopy (AES) that when integrated, agree quantitatively with inductively-coupled plasma optical emission spectrometry (ICP-OES) data on the same films. The effects of sample rotation during sputter depth profiling on the quantification results are described. Details of the procedures used for the ICP-OES and wavelength-dispersed electron probe microanalysis (EPMA) analyses are also presented. Finally, we show why X-ray microanalysis techniques alone should not be used to argue that specific windows of copper and gallium concentrations can yield high performance devices. (C) Elsevier B.V. All rights reserved.
C1 [Perkins, Craig L.] NCPV, Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Perkins, CL (reprint author), NCPV, Natl Renewable Energy Lab, 1617 Cole Blvd,MS 3218, Golden, CO 80401 USA.
EM craig.perkins@nrel.gov
FU U.S. Department of Energy with National Renewable Energy Laboratory
[DE-AC36-08-GO28308]
FX The authors thank Raghu Bhattacharya for development and maintenance of
NREL's ICP-OES capability and Helio Moutinho for useful discussions
regarding AFM image processing. This work was supported by the U.S.
Department of Energy under Contract No. DE-AC36-08-GO28308 with the
National Renewable Energy Laboratory.
NR 27
TC 19
Z9 19
U1 3
U2 30
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0169-4332
J9 APPL SURF SCI
JI Appl. Surf. Sci.
PD NOV 15
PY 2010
VL 257
IS 3
BP 878
EP 886
DI 10.1016/j.apsusc.2010.07.085
PG 9
WC Chemistry, Physical; Materials Science, Coatings & Films; Physics,
Applied; Physics, Condensed Matter
SC Chemistry; Materials Science; Physics
GA 651QJ
UT WOS:000281941900040
ER
PT J
AU Hooker, JM
Kim, SW
Reibel, AT
Alexoff, D
Xu, YW
Shea, C
AF Hooker, Jacob M.
Kim, Sung Won
Reibel, Achim T.
Alexoff, David
Xu, Youwen
Shea, Colleen
TI Evaluation of [C-11]metergoline as a PET radiotracer for 5HTR in
nonhuman primates
SO BIOORGANIC & MEDICINAL CHEMISTRY
LA English
DT Article
DE Metergoline; Carbon-11; PET; Serotonin; Altanserin
ID 5-HT2A RECEPTORS; PHARMACOLOGICAL CHARACTERIZATION; SEROTONIN
TRANSPORTER; METERGOLINE; RADIOLIGAND; VOLUNTEERS; BINDING; ANTAGONIST;
DISORDER; LIGAND
AB Metergoline, a serotonin receptor antagonist, was labeled with carbon-11 in order to evaluate its pharmacokinetics and distribution in non-human primates using positron emission tomography. [C-11]Metergoline had moderate brain uptake and exhibited heterogeneous specific binding, which was blocked by pretreatment with metergoline and altanserin throughout the cortex. Non-specific binding and insensitivity to changes in synaptic serotonin limit its potential as a PET radiotracer. However, the characterization of [C-11]metergoline pharmacokinetics and binding in the brain and peripheral organs using PET improves our understanding of metergoline drug pharmacology. (C) 2010 Elsevier Ltd. All rights reserved.
C1 [Hooker, Jacob M.; Kim, Sung Won; Reibel, Achim T.; Alexoff, David; Xu, Youwen; Shea, Colleen] Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA.
[Hooker, Jacob M.] Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA.
[Hooker, Jacob M.] Harvard Univ, Massachusetts Gen Hosp, Sch Med, Div Nucl Med & Mol Imaging, Boston, MA 02114 USA.
[Kim, Sung Won] NIAAA, Rockville, MD 20892 USA.
[Reibel, Achim T.] Johannes Gutenberg Univ Mainz, Mainz, Germany.
RP Hooker, JM (reprint author), Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA.
EM hooker@nmr.mgh.harvard.edu
OI Hooker, Jacob/0000-0002-9394-7708
FU U.S. Department of Energy, Office of Biological and Environmental
Research [DE-AC02-98CH10886]; NIH [1F32EB008320]; NIMH PDSP
[HHSN-271-2008-00025-C]
FX This work was carried out at Brookhaven National Laboratory under
contract DE-AC02-98CH10886 with the U.S. Department of Energy, supported
by its Office of Biological and Environmental Research. J.M.H. was
supported by an NIH Postdoctoral Fellowship (1F32EB008320) and through
the Goldhaber Distinguished Fellowship program at BNL. The authors are
grateful to Dr. Michael Schueller for cyclotron operation and the PET
imaging team at BNL (Pauline Carter, Payton King, and Don Warner) for
carrying out primate imaging experiments and to Dr. Joanna Fowler for
scientific input. The receptor binding profile for metergoline was
generously provided by the National Institute of Mental Health's
Psychoactive Drug Screening Program, Contract # HHSN-271-2008-00025-C
(NIMH PDSP). The NIMH PDSP is Directed by Bryan L. Roth MD, PhD at the
University of North Carolina at Chapel Hill and Project Officer Jamie
Driscol at NIMH, Bethesda MD, USA.
NR 37
TC 5
Z9 5
U1 0
U2 2
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0968-0896
J9 BIOORGAN MED CHEM
JI Bioorg. Med. Chem.
PD NOV 15
PY 2010
VL 18
IS 22
BP 7739
EP 7745
DI 10.1016/j.bmc.2010.04.039
PG 7
WC Biochemistry & Molecular Biology; Chemistry, Medicinal; Chemistry,
Organic
SC Biochemistry & Molecular Biology; Pharmacology & Pharmacy; Chemistry
GA 673HK
UT WOS:000283649900005
PM 20451398
ER
PT J
AU Pinwattana, K
Wang, J
Lin, CT
Wu, H
Du, D
Lin, YH
Chailapakul, O
AF Pinwattana, Kulwadee
Wang, Jun
Lin, Chiann-Tso
Wu, Hong
Du, Dan
Lin, Yuehe
Chailapakul, Orawon
TI CdSe/ZnS quantum dots based electrochemical immunoassay for the
detection of phosphorylated bovine serum albumin
SO BIOSENSORS & BIOELECTRONICS
LA English
DT Article
DE Electrochemical immunoassay; Quantum dots; Biomarker; Phosphorylated
bovine serum albumin
ID PROTEIN-PHOSPHORYLATION; GOLD NANOPARTICLES; MASS-SPECTROMETRY; ANTIGEN;
LABELS; AMPLIFICATION; IMMUNOSENSOR; SYSTEM
AB A CdSe/ZnS quantum dot (QD) based electrochemical immunoassay of phosphorylated bovine serum albumin (BSA-OP) as a protein biomarker is presented. The QDs were used as labels for amplifying electrochemical signals and were conjugated with a secondary anti-phosphoserine antibody in a heterogeneous sandwich immunoassay. In this assay, the model phosphorylated protein BSA-OP was added to the primary BSA antibody coated polystyrene microwells, and then the QD labeled anti-phosphoserine antibody was added for completing immunorecognition. Finally, the bound QD was dissolved in an acid-dissolution step and was detected by electrochemical stripping analysis. The measured current responses were proportional to the concentration of BSA-OP. Under optimal conditions, the voltammetric response was linear over the range of 0.5-500 ng mL(-1) of BSA-OP, with a detection limit of 0.5 ng mL(-1). It also shows good reproducibility with a relative standard deviation of 8.6%. This QD-based electrochemical immunoassay offers great promise for simple and cost-effective analysis of protein biomarkers. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Wang, Jun; Lin, Chiann-Tso; Wu, Hong; Du, Dan; Lin, Yuehe] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Pinwattana, Kulwadee; Chailapakul, Orawon] Chulalongkorn Univ, Fac Sci, Dept Chem, Bangkok 10330, Thailand.
[Chailapakul, Orawon] Chulalongkorn Univ, Ctr Excellence Petr Petrochem & Adv Mat, Bangkok 10330, Thailand.
RP Lin, YH (reprint author), Pacific NW Natl Lab, 902 Battele Blvd Richland, Richland, WA 99352 USA.
EM yuehe.lin@pnl.gov; corawon@chula.ac.th
RI Lin, Yuehe/D-9762-2011; Du, Dan (Annie)/G-3821-2012;
OI Lin, Yuehe/0000-0003-3791-7587; PINWATTANA, KULWADEE/0000-0002-5543-2623
FU Office of the Higher Education Commission, Thailand; Thai Government;
National Institutes of Health through the National Institute of
Neurological Disorders and Stroke, National Institute of Health [U01
NS058161-01]; Department of Energy's Office of Biological and
Environmental Research located at Pacific Northwest National Laboratory;
DOE [DE-AC05-76L01830]; [PCU028.2010]
FX K.P. would like to thank the Office of the Higher Education Commission,
Thailand for supporting by grant fund under the program Strategic
Scholarships for Frontier Research Network for the Join PhD Program Thai
Doctoral Degree for this research. O.C. would also like to thank the
Thai Government Stimulus Package 2 (TKK2555), under the Project for
Establishment of Comprehensive Center for Innovative Food, Health
Products and Agriculture, Chulalongkorn University, and PCU028.2010.
This work was performed at Pacific Northwest National Laboratory (PNNL)
and partially supported by Grant U01 NS058161-01 from the National
Institutes of Health CounterACT Program through the National Institute
of Neurological Disorders and Stroke, National Institute of Health. The
contents of this publication are solely the responsibility of the
authors and do not necessarily represent the official views of the
federal government. The TEM characterization work was performed at the
Environmental Molecular Sciences Laboratory (EMSL), a national
scientific user facility sponsored by the Department of Energy's Office
of Biological and Environmental Research located at Pacific Northwest
National Laboratory. PNNL is operated for DOE by Battelle under Contract
DE-AC05-76L01830.
NR 23
TC 43
Z9 46
U1 1
U2 35
PU ELSEVIER ADVANCED TECHNOLOGY
PI OXFORD
PA OXFORD FULFILLMENT CENTRE THE BOULEVARD, LANGFORD LANE, KIDLINGTON,
OXFORD OX5 1GB, OXON, ENGLAND
SN 0956-5663
J9 BIOSENS BIOELECTRON
JI Biosens. Bioelectron.
PD NOV 15
PY 2010
VL 26
IS 3
BP 1109
EP 1113
DI 10.1016/j.bios.2010.08.021
PG 5
WC Biophysics; Biotechnology & Applied Microbiology; Chemistry, Analytical;
Electrochemistry; Nanoscience & Nanotechnology
SC Biophysics; Biotechnology & Applied Microbiology; Chemistry;
Electrochemistry; Science & Technology - Other Topics
GA 675GB
UT WOS:000283813600025
PM 20850960
ER
PT J
AU Schilling, F
Schroder, L
Palaniappan, KK
Zapf, S
Wemmer, DE
Pines, A
AF Schilling, Franz
Schroder, Leif
Palaniappan, Krishnan K.
Zapf, Sina
Wemmer, David E.
Pines, Alexander
TI MRI Thermometry Based on Encapsulated Hyperpolarized Xenon
SO CHEMPHYSCHEM
LA English
DT Article
DE imaging agents; NMR spectroscopy; sensors thermometry; xenon
ID NUCLEAR-MAGNETIC-RESONANCE; POLARIZED NOBLE-GASES; FUNCTIONALIZED XENON;
BIOSENSOR; NMR; XE-129
AB A new approach to MRI thermometry using encapsulated hyperpolarized xenon is demonstrated The method is based on the temperature dependent chemical shift of hyperpolarized xenon in a cryptophane-A cage This shift is linear with a slope of 029 ppm degrees C(-1) which is perceptibly higher than the shift of the proton resonance frequency of water (ca 0 01 ppm degrees C(-1)) that is currently used for MRI thermometry Using spectroscopic imaging techniques, we collected temperature maps of a phantom sample that could discriminate by direct NMR detection between temperature differences of 0 1 degrees C at a sensor concentration of 150 mu M Alternatively, the xenon-in-cage chemical shift was determined by indirect detection using saturation transfer techniques (Hyper-CEST) that allow detection of nanomolar agent concentrations Thermometry based on hyperpolarized xenon sensors improves the accuracy of currently available MRI thermometry methods, potentially giving rise to biomedical applications of biosensors functionalized for binding to specific target molecules
C1 [Schilling, Franz; Zapf, Sina] Univ Wurzburg, D-97074 Wurzburg, Germany.
[Schilling, Franz; Schroder, Leif; Palaniappan, Krishnan K.; Wemmer, David E.; Pines, Alexander] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Schilling, F (reprint author), Tech Univ Munich, Dept Chem, D-85748 Garching, Germany.
RI Schroder, Leif/H-6036-2011;
OI Schroder, Leif/0000-0003-4901-0325; Schilling, Franz/0000-0001-5239-4628
FU Office of Science, Office of Basic Energy Sciences, Materials Sciences
and Engineering Division, of the US Department of Energy
[DE-AC02-05CH11231]; Studienstiftung des deutschen Volkes; Deutsche
Forschungsgemeinschaft [SCHR 995/1-1, SCHR 995/2-1]; European Research
Council [242710]
FX This work was supported by the Director, Office of Science, Office of
Basic Energy Sciences, Materials Sciences and Engineering Division, of
the US Department of Energy under Contract No DE-AC02-05CH11231 FS
acknowledges support from Studienstiftung des deutschen Volkes L S
acknowledges support from the Deutsche Forschungsgemeinschaft through
Emmy Noether Fellowships (SCHR 995/1-1 and SCHR 995/2-1) and by the
European Research Council through Starting Grant BiosensorImaging under
ERC Grant Agreement No 242710 FS thanks Prof Peter M Jakob for
scientific support We would like to thank Prof Matthew B Francis for
helpful discussions on sensor construction
NR 25
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PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 1439-4235
J9 CHEMPHYSCHEM
JI ChemPhysChem
PD NOV 15
PY 2010
VL 11
IS 16
BP 3529
EP 3533
DI 10.1002/cphc.201000507
PG 5
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 691LF
UT WOS:000285080600023
PM 20821795
ER
PT J
AU Bradford, PD
Wang, X
Zhao, HB
Maria, JP
Jia, QX
Zhu, YT
AF Bradford, Philip D.
Wang, Xin
Zhao, Haibo
Maria, Jon-Paul
Jia, Quanxi
Zhu, Y. T.
TI A novel approach to fabricate high volume fraction nanocomposites with
long aligned carbon nanotubes
SO COMPOSITES SCIENCE AND TECHNOLOGY
LA English
DT Article
DE Carbon nanotubes; Nanocomposites; Polymer-matrix composites (PMCs);
Electrical properties; Mechanical properties
ID POLYMER COMPOSITES; MECHANICAL-PROPERTIES; FIBERS; YARNS; PROPERTY;
WAVINESS; ARRAYS; SPUN; FILM
AB Conventional micro-fiber-reinforced composites provide insight into critical structural features needed for obtaining maximum composite strength and stiffness the reinforcements should be long, well aligned in a unidirectional orientation, and should have a high reinforcement volume fraction. It has long been a challenge for researchers to process CNT composites with such structural features. Here we report a method to quickly produce macroscopic CNT composites with a high volume fraction of millimeter long, well aligned CNTs. Specifically, we use the novel method, shear pressing, to process tall, vertically aligned CNT arrays into dense aligned CNT preforms, which are subsequently processed into composites Alignment was confirmed through SEM analysis while a CNT volume fraction in the composites was calculated to be 27%, based on thermogravimetric analysis data Tensile testing of the preforms and composites showed promising mechanical properties with tensile strengths reaching 400 MPa. (C) 2010 Elsevier Ltd All rights reserved
C1 [Bradford, Philip D.; Wang, Xin; Zhao, Haibo; Maria, Jon-Paul; Zhu, Y. T.] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA.
[Jia, Quanxi] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA.
RP Zhu, YT (reprint author), N Carolina State Univ, Dept Mat Sci & Engn, 911 Partners Way, Raleigh, NC 27695 USA.
RI Zhu, Yuntian/B-3021-2008; Wang, Xin/F-3130-2011; Jia, Q. X./C-5194-2008;
OI Zhu, Yuntian/0000-0002-5961-7422; Bradford, Philip/0000-0002-4448-5033
FU US Department of Energy through LDRD of the Los Alamos National
laboratory; North Carolina Space Grant
FX We appreciate the financial support by the US Department of Energy
through LDRD of the Los Alamos National laboratory and the North
Carolina Space Grant
NR 37
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PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0266-3538
J9 COMPOS SCI TECHNOL
JI Compos. Sci. Technol.
PD NOV 15
PY 2010
VL 70
IS 13
SI SI
BP 1980
EP 1985
DI 10.1016/j.compscitech.2010.07.020
PG 6
WC Materials Science, Composites
SC Materials Science
GA 672TY
UT WOS:000283611000028
ER
PT J
AU Fisk, WJ
Eliseeva, EA
Mendell, MJ
AF Fisk, William J.
Eliseeva, Ekaterina A.
Mendell, Mark J.
TI Association of residential dampness and mold with respiratory tract
infections and bronchitis: a meta-analysis
SO ENVIRONMENTAL HEALTH
LA English
DT Review
ID ENVIRONMENTAL RISK-FACTORS; HOME DAMPNESS; OTITIS-MEDIA; HOUSING
CHARACTERISTICS; HEALTH; SYMPTOMS; EXPOSURE; CHILDREN; ASTHMA; ADULTS
AB Background: Dampness and mold have been shown in qualitative reviews to be associated with a variety of adverse respiratory health effects, including respiratory tract infections. Several published meta-analyses have provided quantitative summaries for some of these associations, but not for respiratory infections. Demonstrating a causal relationship between dampness-related agents, which are preventable exposures, and respiratory tract infections would suggest important new public health strategies. We report the results of quantitative meta-analyses of published studies that examined the association of dampness or mold in homes with respiratory infections and bronchitis.
Methods: For primary studies meeting eligibility criteria, we transformed reported odds ratios (ORs) and confidence intervals (CIs) to the log scale. Both fixed and random effects models were applied to the log ORs and their variances. Most studies contained multiple estimated ORs. Models accounted for the correlation between multiple results within the studies analyzed. One set of analyses was performed with all eligible studies, and another set restricted to studies that controlled for age, gender, smoking, and socioeconomic status. Subgroups of studies were assessed to explore heterogeneity. Funnel plots were used to assess publication bias.
Results: The resulting summary estimates of ORs from random effects models based on all studies ranged from 1.38 to 1.50, with 95% CIs excluding the null in all cases. Use of different analysis models and restricting analyses based on control of multiple confounding variables changed findings only slightly. ORs (95% CIs) from random effects models using studies adjusting for major confounding variables were, for bronchitis, 1.45 (1.32-1.59); for respiratory infections, 1.44 (1.31-1.59); for respiratory infections excluding nonspecific upper respiratory infections, 1.50 (1.32-1.70), and for respiratory infections in children or infants, 1.48 (1.33-1.65). Little effect of publication bias was evident. Estimated attributable risk proportions ranged from 8% to 20%.
Conclusions: Residential dampness and mold are associated with substantial and statistically significant increases in both respiratory infections and bronchitis. If these associations were confirmed as causal, effective control of dampness and mold in buildings would prevent a substantial proportion of respiratory infections.
C1 [Fisk, William J.; Eliseeva, Ekaterina A.; Mendell, Mark J.] Lawrence Berkeley Natl Lab, Indoor Environm Dept, Environm Energy Technol Div, Berkeley, CA USA.
RP Fisk, WJ (reprint author), Lawrence Berkeley Natl Lab, Indoor Environm Dept, Environm Energy Technol Div, 1 Cyclotron Rd 90R3058, Berkeley, CA USA.
EM WJFisk@lbl.gov
FU Indoor Environments Division, Office of Radiation and Indoor Air of the
U.S. Environmental Protection Agency (EPA) [DW-89-92224401]; US
Department of Energy [DE-AC02-05CH11231]
FX This study was funded through interagency agreement DW-89-92224401
between the Indoor Environments Division, Office of Radiation and Indoor
Air of the U.S. Environmental Protection Agency (EPA) and the US
Department of Energy under contract DE-AC02-05CH11231, to support EPA's
IAQ Scientific Findings Resource Bank. Conclusions in this paper are
those of the authors and not necessarily those of the U.S. EPA.
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PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1476-069X
J9 ENVIRON HEALTH-GLOB
JI Environ. Health
PD NOV 15
PY 2010
VL 9
AR 72
DI 10.1186/1476-069X-9-72
PG 11
WC Environmental Sciences; Public, Environmental & Occupational Health
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health
GA 692FJ
UT WOS:000285138100002
PM 21078183
ER
PT J
AU MacLeod, M
Scheringer, M
McKone, TE
Hungerbuhler, K
AF MacLeod, Matthew
Scheringer, Martin
McKone, Thomas E.
Hungerbuhler, Konrad
TI The State of Multimedia Mass-Balance Modeling in Environmental Science
and Decision-Making
SO ENVIRONMENTAL SCIENCE & TECHNOLOGY
LA English
DT Article
ID PERSISTENT ORGANIC POLLUTANTS; CYCLE IMPACT ASSESSMENT;
POLYCHLORINATED-BIPHENYLS; GLOBAL FRACTIONATION; NORTHERN-HEMISPHERE;
COLD CONDENSATION; RISK-ASSESSMENT; LAKE-ONTARIO; TRANSPORT; FATE
C1 [MacLeod, Matthew; Scheringer, Martin; Hungerbuhler, Konrad] ETH, Zurich, Switzerland.
[McKone, Thomas E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP MacLeod, M (reprint author), ETH, Zurich, Switzerland.
EM matthew.macleod@itm.su.se; martin.scheringer@chem.ethz.ch
RI MacLeod, Matthew/D-5919-2013
OI MacLeod, Matthew/0000-0003-2562-7339
FU Swiss National Science Foundation [200020-116622]; Laboratory Directed
Research and Development (LDRD) grant at the Lawrence Berkeley National
Laboratory [DE-AC02-05CH11231]
FX Authors at ETH Zurich were supported by a grant (200020-116622) from the
Swiss National Science Foundation. T.E.M. was supported by a Laboratory
Directed Research and Development (LDRD) grant at the Lawrence Berkeley
National Laboratory, which is operated for the U.S. Department of Energy
(DOE) under contract grant DE-AC02-05CH11231.
NR 44
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PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0013-936X
J9 ENVIRON SCI TECHNOL
JI Environ. Sci. Technol.
PD NOV 15
PY 2010
VL 44
IS 22
BP 8360
EP 8364
DI 10.1021/es100968w
PG 5
WC Engineering, Environmental; Environmental Sciences
SC Engineering; Environmental Sciences & Ecology
GA 680QA
UT WOS:000284248300002
PM 20964363
ER
PT J
AU Dale, BE
Bals, BD
Kim, S
Eranki, P
AF Dale, Bruce E.
Bals, Bryan D.
Kim, Seungdo
Eranki, Pragnya
TI Biofuels Done Right: Land Efficient Animal Feeds Enable Large
Environmental and Energy Benefits
SO ENVIRONMENTAL SCIENCE & TECHNOLOGY
LA English
DT Article
ID CROPPING SYSTEMS; UNITED-STATES; ETHANOL-PRODUCTION; COVER CROPS;
BIOENERGY; CORN; TILLAGE; CARBON; MANURE; YIELD
AB There is an intense ongoing debate regarding the potential scale of biofuel production without creating adverse effects on food supply. We explore the possibility of three land-efficient technologies for producing food (actually animal feed), including leaf protein concentrates, pretreated forages, and double crops to increase the total amount of plant biomass available for biofuels. Using less than 30% of total U.S. cropland, pasture, and range, 400 billion liters of ethanol can be produced annually without decreasing domestic food production or agricultural exports. This approach also reduces U.S. greenhouse gas emissions by 670 Tg CO(2)-equivalent per year, or over 10% of total U.S. annual emissions, while increasing soil fertility and promoting biodiversity. Thus we can replace a large fraction of U.S. petroleum consumption without indirect land use change.
C1 [Dale, Bruce E.; Bals, Bryan D.; Kim, Seungdo; Eranki, Pragnya] Michigan State Univ, Biomass Convers Res Lab, Dept Chem Engn & Mat Sci, Lansing, MI 48910 USA.
[Dale, Bruce E.; Kim, Seungdo; Eranki, Pragnya] Michigan State Univ, Great Lakes Bioenergy Res Ctr, Lansing, MI 48910 USA.
RP Dale, BE (reprint author), Michigan State Univ, Biomass Convers Res Lab, Dept Chem Engn & Mat Sci, 3815 Technol Blvd,Suite 1045, Lansing, MI 48910 USA.
EM bdale@egr.msu.edu
FU DOE Great Lakes Bioenergy Research Center, U.S. Department of Energy,
Office of Science, Office of Biological and Environmental Research
[DEFC02-07ER64494]; Michigan Agricultural Experiment Station; General
Motors Corporation
FX This work was funded by DOE Great Lakes Bioenergy Research Center
(www.greatlakesbioenergy.org) supported by the U.S. Department of
Energy, Office of Science, Office of Biological and Environmental
Research, through Cooperative Agreement DEFC02-07ER64494. Support was
also provided by the Michigan Agricultural Experiment Station and by
General Motors Corporation.
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PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0013-936X
J9 ENVIRON SCI TECHNOL
JI Environ. Sci. Technol.
PD NOV 15
PY 2010
VL 44
IS 22
BP 8385
EP 8389
DI 10.1021/es101864b
PG 5
WC Engineering, Environmental; Environmental Sciences
SC Engineering; Environmental Sciences & Ecology
GA 680QA
UT WOS:000284248300006
PM 20958023
ER
PT J
AU Choi, JK
Fthenakis, V
AF Choi, Jun-Ki
Fthenakis, Vasilis
TI Design and Optimization of Photovoltaics Recycling Infrastructure
SO ENVIRONMENTAL SCIENCE & TECHNOLOGY
LA English
DT Article
ID REVERSE LOGISTICS; NETWORKS
AB With the growing production and installation of photovoltaics (PV) around the world constrained by the limited availability of resources, end-of-life management of PV is becoming very important. A few major PV manufacturers currently are operating several PV recycling technologies at the process level. The management of the total recycling infrastructure, including reverse-logistics planning, is being started in Europe. In this paper, we overview the current status of photovoltaics recycling planning and discuss our mathematic modeling of the economic feasibility and the environmental viability of several PV recycling infrastructure scenarios in Germany; our findings suggest the optimum locations of the anticipated PV take-back centers. Short-term 5-10 year planning for PV manufacturing scraps is the focus of this article. Although we discuss the German situation, we expect the generic model will be applicable to any region, such as the whole of Europe and the United States.
C1 [Choi, Jun-Ki; Fthenakis, Vasilis] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Choi, JK (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
EM jkchoi@bnl.gov
RI Choi, Jun-Ki/I-2576-2012
FU USDOE [DE-AC02-76CH000016]
FX This research is supported by the Solar Technologies Program, Energy
Efficiency and Renewable Energy, USDOE Contract DE-AC02-76CH000016. We
also thank members of PVCYCLE and IEA PVPS Task 12 for useful
discussions.
NR 24
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PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0013-936X
J9 ENVIRON SCI TECHNOL
JI Environ. Sci. Technol.
PD NOV 15
PY 2010
VL 44
IS 22
BP 8678
EP 8683
DI 10.1021/es101710g
PG 6
WC Engineering, Environmental; Environmental Sciences
SC Engineering; Environmental Sciences & Ecology
GA 680QA
UT WOS:000284248300051
PM 20886824
ER
PT J
AU Fthenakis, V
Clark, DO
Moalem, M
Chandler, P
Ridgeway, RG
Hulbert, FE
Cooper, DB
Maroulis, PJ
AF Fthenakis, Vasilis
Clark, Daniel O.
Moalem, Mehran
Chandler, Phil
Ridgeway, Robert G.
Hulbert, Forrest E.
Cooper, David B.
Maroulis, Peter J.
TI Life-Cycle Nitrogen Trifluoride Emissions from Photovoltaics
SO ENVIRONMENTAL SCIENCE & TECHNOLOGY
LA English
DT Article
ID REMOTE MICROWAVE PLASMA; CHAMBER CLEANS; NF3
AB Amorphous- and nanocrystalline-silicon thin-film photovoltaic modules are made in high-throughput manufacturing lines that necessitate quickly cleaning the reactor. Using NF(3), a potent greenhouse gas, as the cleaning agent triggered concerns as recent reports reveal that the atmospheric concentrations of this gas have increased significantly. We quantified the lifecycle emissions of NF(3) in photovoltaic (PV) manufacturing, on the basis of actual measurements at the facilities of a major producer of NF(3) and of a manufacturer of PV end-use equipment From these, we defined the best practices and technologies that are the most likely to keep worldwide atmospheric concentrations of NF(3) at very low radiative forcing levels. For the average U.S. insolation and electricity-grid conditions, the greenhouse gas (GHG) emissions from manufacturing and using NF(3) in current PV a-Si and tandem a-Si/nc-Si facilities add 2 and 7 g CO(2eq)/kWh, which can be displaced within the first 1-4 months of the PV system life.
C1 [Fthenakis, Vasilis] Brookhaven Natl Lab, New York, NY USA.
[Fthenakis, Vasilis] Columbia Univ, New York, NY USA.
[Clark, Daniel O.; Moalem, Mehran; Chandler, Phil] Appl Mat Inc, Santa Clara, CA 95054 USA.
[Ridgeway, Robert G.; Hulbert, Forrest E.; Cooper, David B.; Maroulis, Peter J.] Air Prod & Chem Inc, Allentown, PA USA.
RP Fthenakis, V (reprint author), Brookhaven Natl Lab, New York, NY USA.
EM vmf@bnl.gov
FU US-DOE [DE-AC02-76CH000016]
FX Support to one of the authors (V.M.) from the US-DOE Solar Technologies
Program with Contract DE-AC02-76CH000016 to BNL is gratefully
acknowledged.
NR 23
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PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0013-936X
J9 ENVIRON SCI TECHNOL
JI Environ. Sci. Technol.
PD NOV 15
PY 2010
VL 44
IS 22
BP 8750
EP 8757
DI 10.1021/es100401y
PG 8
WC Engineering, Environmental; Environmental Sciences
SC Engineering; Environmental Sciences & Ecology
GA 680QA
UT WOS:000284248300062
PM 21067246
ER
PT J
AU Rustad, JR
Casey, WH
Yin, QZ
Bylaska, EJ
Felmy, AR
Bogatko, SA
Jackson, VE
Dixon, DA
AF Rustad, James R.
Casey, William H.
Yin, Qing-Zhu
Bylaska, Eric J.
Felmy, Andrew R.
Bogatko, Stuart A.
Jackson, Virgil E.
Dixon, David A.
TI Isotopic fractionation of Mg2+(aq), Ca2+(aq), and Fe2+(aq) with
carbonate minerals
SO GEOCHIMICA ET COSMOCHIMICA ACTA
LA English
DT Article
ID DENSITY-FUNCTIONAL THEORY; MOLECULAR-ORBITAL METHODS; METAL
STABLE-ISOTOPES; HYDRATION FREE-ENERGY; CALCIUM-CARBONATE; BASIS-SETS;
AB-INITIO; EQUILIBRIUM FRACTIONATION; MOSSBAUER-SPECTROSCOPY;
EXCHANGE-REACTIONS
AB Density-functional electronic structure calculations are used to compute the equilibrium constants for Mg-26/Mg-24 and Ca-44/Ca-40 isotope exchange between carbonate minerals and uncomplexed divalent aquo ions. The most reliable calculations at the B3LYP/6-311++G(2d,2p) level predict equilibrium constants K, reported as 10(3)In (K) at 25 degrees C, of -5.3, -1.1, and +1.2 for Mg-26/Mg-24 exchange between calcite (CaCO3), magnesite (MgCO3), and dolomite (Ca0.5Mg0.5CO3), respectively, and Mg2+(aq) with positive values indicating enrichment of the heavy isotope in the mineral phase. For Ca-44/Ca-40 exchange between calcite and Ca2+(aq) at 25 degrees C, the calculations predict values of +1.5 for Ca2+(aq) in 6-fold coordination and +4.1 for Ca2+(aq) in 7-fold coordination. We find that the reduced partition function ratios can be reliably computed from systems as small as M(CO3)(6)(10-) and M(H2O)(6)(2+) embedded in a set of fixed atoms representing the second-shell (and greater) coordination environment. We find that the aqueous cluster representing the aquo ion is much more sensitive to improvements in the basis set than the calculations on the mineral systems, and that fractionation factors should be computed using the best possible basis set for the aquo complex, even if the reduced partition function ratio calculated with the same basis set is not available for the mineral system. The new calculations show that the previous discrepancies between theory and experiment for Fe3+-hematite and Fe2+-siderite fractionations arise from an insufficiently accurate reduced partition function ratio for the Fe3+(aq) and Fe2+(aq) species. (C) 2010 Elsevier Ltd. All rights reserved.
C1 [Rustad, James R.; Casey, William H.; Yin, Qing-Zhu] Univ Calif Davis, Dept Geol, Davis, CA 95616 USA.
[Casey, William H.] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA.
[Bylaska, Eric J.; Felmy, Andrew R.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Bogatko, Stuart A.] Univ Calif San Diego, Dept Chem, La Jolla, CA 92093 USA.
[Jackson, Virgil E.; Dixon, David A.] Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA.
RP Rustad, JR (reprint author), Univ Calif Davis, Dept Geol, 1 Shields Ave, Davis, CA 95616 USA.
EM jrrustad@ucdavis.edu
RI Yin, Qing-Zhu/B-8198-2009; Bogatko, Stuart/C-8394-2013
OI Yin, Qing-Zhu/0000-0002-4445-5096; Bogatko, Stuart/0000-0001-9759-2580
FU NASA [NNX07AV56G]; Chemistry and Geosciences Division, Office of Basic
Energy Sciences, United States Department of Energy; University of
Alabama; Molecular Science Computing Facility of the Environmental
Molecular Sciences Laboratory
FX This work was supported by NASA Grant NNX07AV56G to W.H.C., Q.-Z.Y., and
J.R.R. D.A.D. acknowledges support from the Chemistry and Geosciences
Division, Office of Basic Energy Sciences, United States Department of
Energy and the Robert Ramsay Fund of the University of Alabama. A.R.F.
and E.J.B. acknowledge support from the Chemistry and Geosciences
Division, Office of Basic Energy Sciences, United States Department of
Energy. We thank the Molecular Science Computing Facility of the
Environmental Molecular Sciences Laboratory for a generous grant of
computer time. We are grateful to Drs. Veniamin B. Polyakov, Matthew S.
Fantle, an anonymous reviewer, and Associate Editor Clark Johnson for
their careful reading and excellent suggestions for improving the
manuscript. In particular, we thank the Associate Editor for providing
data in electronic form for Figs. 5 and 6 from the Beard et al. (2010)
reference.
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PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0016-7037
EI 1872-9533
J9 GEOCHIM COSMOCHIM AC
JI Geochim. Cosmochim. Acta
PD NOV 15
PY 2010
VL 74
IS 22
BP 6301
EP 6323
DI 10.1016/j.gca.2010.08.018
PG 23
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 678LT
UT WOS:000284077400004
ER
PT J
AU Saldi, GD
Schott, J
Pokrovsky, OS
Oelkers, EH
AF Saldi, Giuseppe D.
Schott, Jacques
Pokrovsky, Oleg S.
Oelkers, Eric H.
TI An experimental study of magnesite dissolution rates at neutral to
alkaline conditions and 150 and 200 degrees C as a function of pH, total
dissolved carbonate concentration, and chemical affinity
SO GEOCHIMICA ET COSMOCHIMICA ACTA
LA English
DT Article
ID ATOMIC-FORCE MICROSCOPY; ACIDIC AQUEOUS-SOLUTION; SOLUTION INTERFACE;
DOLOMITE DISSOLUTION; SURFACE SPECIATION; CO2 SEQUESTRATION; ATM PCO(2);
KINETICS; TEMPERATURE; CALCITE
AB Steady-state magnesite dissolution rates were measured in mixed-flow reactors at 150 and 200 degrees C and 4.6 < pH < 8.4, as a function of ionic strength (0.001 M <= I <= 1 M), total dissolved carbonate concentration (10(-4) M < Sigma CO(2) < 0.1 M), and distance from equilibrium. Rates were found to increase with increasing ionic strength, but decrease with increasing temperature from 150 to 200 degrees C, pH, and aqueous CO(3)(2-) activity. Measured rates were interpreted using the surface complexation model developed by Pokrovsky et al. (1999a) in conjunction with transition state theory (Eyring, 1935). Within this formalism, magnesite dissolution rates are found to be consistent with
r(d) = k(Mg) {> MgOH(2)(+)}(4)[1 - exp (-4A/RT)]
where r(d) represents the BET surface area normalized dissolution rate, {> MgOH(2)(+)} stands for the concentration of hydrated magnesium centers on the magnesite surface, k(Mg) designates a rate constant, A refers to the chemical affinity of the overall reaction, R denotes the gas constant, and T symbolizes absolute temperature. Within this model decreasing rates at far-from-equilibrium conditions (1) at constant pH with increasing temperature and (2) at constant temperature with increasing pH and Sigma CO(2) stem from a corresponding decrease in {> MgOH(2)(+)}. This decrease in {> MgOH(2)(+)} results from the increasing stability of the > MgCO(3)(-) and >MgOH degrees surface species with increasing temperature, pH and CO(3)(2-) activity. The decrease in constant pH dissolution rates yields negative apparent activation energies. This behavior makes magnesite resistant to re-dissolution if formed as part of mineral carbon sequestration efforts in deep geologic formations. (C) 2010 Elsevier Ltd. All rights reserved.
C1 [Saldi, Giuseppe D.; Schott, Jacques; Pokrovsky, Oleg S.; Oelkers, Eric H.] Univ Toulouse, LMTG, CNRS, OMP, F-31400 Toulouse, France.
RP Saldi, GD (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM saldi@lmtg.obs-mip.fr; oelkers@lmtg.obs-mip.fr
OI Oelkers, Eric/0000-0002-5759-524X
FU Centre National de la Recherche Scientifique; European Community through
the MIR Early Stage Training Network [MEST-CT-2005-021120]
FX We would like to thank Jean-Claude Harrichoury and Alain Castillo for
the constant technical assistance throughout the duration of the
experimental work, Carole Causserand for her generous help during the
analytical part of the work, and Philippe de Parseval for providing a
sample of the Huaziyu magnesite. We are also grateful to Pascale
Benezeth, Jean-Louis Dandurand, and Robert Gout for helpful discussions
during the course of this study. Support from Centre National de la
Recherche Scientifique, and the European Community through the MIR Early
Stage Training Network (MEST-CT-2005-021120) is gratefully acknowledged.
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U1 3
U2 28
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0016-7037
J9 GEOCHIM COSMOCHIM AC
JI Geochim. Cosmochim. Acta
PD NOV 15
PY 2010
VL 74
IS 22
BP 6344
EP 6356
DI 10.1016/j.gca.2010.07.012
PG 13
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 678LT
UT WOS:000284077400006
ER
PT J
AU Bonal, L
Huss, GR
Krot, AN
Nagashima, K
Ishii, HA
Bradley, JP
AF Bonal, L.
Huss, G. R.
Krot, A. N.
Nagashima, K.
Ishii, H. A.
Bradley, J. P.
TI Highly N-15-enriched chondritic clasts in the CB/CH-like meteorite
Isheyevo
SO GEOCHIMICA ET COSMOCHIMICA ACTA
LA English
DT Article
ID INTERPLANETARY DUST PARTICLES; MACROMOLECULAR ORGANIC-MATTER;
CARBONACEOUS CHONDRITES; ISOTOPIC COMPOSITIONS; NITROGEN ISOTOPE;
INTERSTELLAR CHEMISTRY; REFRACTORY INCLUSIONS; PRIMITIVE CHONDRITE;
HEAVY NITROGEN; LITHIC CLASTS
AB The metal-rich carbonaceous chondrites (CB and CH) have the highest whole-rock N-15-enrichments (delta N-15 up to 1500 parts per thousand) among planetary materials. They are also characterized by the absence of interchondrule fine-grained matrix. The only fine-grained material is present as lithic clasts, which experienced extensive aqueous alteration in contrast to the surrounding high-temperature components (chondrules, refractory inclusions, metal grains). Hence, the clasts are foreign objects that were incorporated at a late stage into the final parent body of Isheyevo. Their origin is poorly constrained. Based on mineralogy, petrography, and thermal processing of the aromatic carbonaceous component, different types of clasts have been previously identified in the CB/CH-like chondrite Isheyevo. Here, we focus on the rare lithic clasts characterized by the presence of anhydrous silicates (chondrules, chondrule fragments, and CAIs). Their mineralogy and oxygen isotopic compositions reveal them to be micro-chondrules, fragments of chondrules, and refractory inclusions related to those in the Isheyevo host, suggesting accretion in the same region. In contrast to previously studied IDPs or primitive chondritic matrices, the fine-grained material in the clasts we studied is highly and rather uniformly enriched in heavy nitrogen, with bulk delta N-15 values ranging between 1000 parts per thousand and 1300 parts per thousand. It is also characterized by the presence of numerous N-15 hotspots (delta N-15 ranging from 1400 parts per thousand to 4000 parts per thousand). No bulk (delta D <-240 parts per thousand) or localized deuterium enrichments were observed. These clasts have the highest bulk enrichment in heavy nitrogen measured to date in a fine-grained material. They represent a unique material, of asteroidal or cometary origin, in our collection of cosmomaterials. We show that they were N-15-enriched before their incorporation in the final parent body of Isheyevo. They experienced an extensive aqueous alteration that most likely played a role in redistributing N-15 over the whole fine-grained material and may have significantly modified its initial hydrogen isotopic composition. Based on a review of isotopic fractionation models, we conclude that the nitrogen isotopic fractionation process, its timing, and its location are still poorly constrained. The N-15-rich clasts may represent the surviving original carrier of the N-15 anomaly in Isheyevo whole-rock. (C) 2010 Elsevier Ltd. All rights reserved.
C1 [Bonal, L.; Huss, G. R.; Krot, A. N.; Nagashima, K.] Univ Hawaii Manoa, Hawaii Inst Geophys & Planetol, Sch Ocean Earth Sci & Technol, Honolulu, HI 96822 USA.
[Ishii, H. A.; Bradley, J. P.] Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Phys & Life Sci Directorate, Livermore, CA 94550 USA.
RP Bonal, L (reprint author), Univ Hawaii Manoa, Hawaii Inst Geophys & Planetol, Sch Ocean Earth Sci & Technol, Honolulu, HI 96822 USA.
EM lbonal@ciw.edu
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; NASA [NNG05GG48G, NNX08AG58G, NNX07AZ43,
NNH09AK261]
FX We thank Nick Teslich at LLNL who assisted with the FIB sample
preparation. Portions of this work were performed under the auspices of
the U.S. Department of Energy by Lawrence Livermore National Laboratory
under Contract DE-AC52-07NA27344. This work was supported by NASA grants
NNG05GG48G and NNX08AG58G (G.R. Huss, P.I.), NNX07AZ43 (A.N. Krot,
P.I.), and NNH09AK261 (H.A. Ishii). We thank Dr. Smail Mostefaoui, Dr.
Christine Floss, and an anonymous reviewer for the critical reading of
the initial manuscript and their constructive comments. We also thank
the associate editor Dr. Sara Russell for her pertinent insights. This
is Hawai`i Institute of Geophysics and Planetology publication No. 1865
and School of Ocean and Earth Science and Technology publication No.
7978.
NR 63
TC 28
Z9 28
U1 0
U2 9
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0016-7037
J9 GEOCHIM COSMOCHIM AC
JI Geochim. Cosmochim. Acta
PD NOV 15
PY 2010
VL 74
IS 22
BP 6590
EP 6609
DI 10.1016/j.gca.2010.08.017
PG 20
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 678LT
UT WOS:000284077400020
ER
PT J
AU Jin, GB
Ringe, E
Long, GJ
Grandjean, F
Sougrati, MT
Choi, ES
Wells, DM
Balasubramanian, M
Ibers, JA
AF Jin, Geng Bang
Ringe, Emilie
Long, Gary J.
Grandjean, Fernande
Sougrati, Moulay T.
Choi, Eun Sang
Wells, Daniel M.
Balasubramanian, Mahalingam
Ibers, James A.
TI Structural, Electronic, and Magnetic Properties of UFeS3 and UFeSe3
SO INORGANIC CHEMISTRY
LA English
DT Article
ID SPIN-STATE CROSSOVER; CRYSTAL-STRUCTURE; TRANSPORT-PROPERTIES;
OPTICAL-PROPERTIES; SINGLE-CRYSTALS; URANIUM; CHALCOGENIDES; PYRAZOLYL;
SULFIDE; PZ
AB Black prisms of UFeS3 and UFeSe3 have been synthesized by solid-state reactions of U, Fe, and S or Se with CsCl as a flux at 1173 K. The structure of these isostructural compounds consists of layers of edge- and corner-sharing FeS6 or FeSe6 octahedra that are separated by layers of face- and edge-sharing US8 or USe8 bicapped trigonal prisms. The isomer shifts in the iron-57 Mossbauer spectra of both UFeS3 and UFeSe3 are consistent with the presence of high-spin iron(II) ions octahedrally coordinated to S or Se. The XANES spectra of UFeS3 and UFeSe3 are consistent with uranium(IV). Single-crystal magnetic susceptibility measurements along the three crystallographic axes of UFeSe3 reveal a substantial magnetic anisotropy with a change of easy axis from the a-axis above 40 K to the b-axis below 40 K, a change that results from competition between the iron(II) and uranium(IV) anisotropies. The temperature dependence of the magnetic susceptibility along the three axes is characteristic of two-dimensional magnetism. A small shoulder-like anomaly is observed in the magnetic susceptibilities along the a- and b-axes at 96 and 107 K, respectively. Below 107 K, the iron-57 Mossbauer spectra of UFeS3 and UFeSe3 show that the iron nuclei experience a magnetic hyperfine field that results from long-range magnetic ordering of at least the iron(II) magnetic moments because the field exhibits Brillouin-like behavior. Below 40 K there is no significant change in the Mossbauer spectra as a result of change in magnetic anisotropy. The complexity of the iron-57 Mossbauer spectra and the temperature and field dependencies of the magnetic properties point toward a complex long-range magnetic structure of two independent iron(II) and uranium(IV) two-dimensional sublattices. The temperature dependence of the single-crystal resistivity of UFeSe3 measured along the a-axis reveals semiconducting behavior between 30 and 300 K with an energy gap of about 0.03 eV below the 53 K maximum in susceptibility, of about 0.05 eV between 50 and 107 K, and of 0.03 eV above 107 K; a negative magnetoresistance was observed below 60 K.
C1 [Long, Gary J.] Univ Missouri, Missouri Univ Sci & Technol, Dept Chem, Rolla, MO 65409 USA.
[Jin, Geng Bang; Ringe, Emilie; Wells, Daniel M.; Ibers, James A.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
[Grandjean, Fernande; Sougrati, Moulay T.] Univ Liege, Dept Phys, B-4000 Sart Tilman Par Liege, Belgium.
[Choi, Eun Sang] Florida State Univ, Dept Phys, Tallahassee, FL 32310 USA.
[Choi, Eun Sang] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA.
[Balasubramanian, Mahalingam] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Long, GJ (reprint author), Univ Missouri, Missouri Univ Sci & Technol, Dept Chem, Rolla, MO 65409 USA.
EM glong@mst.edu; ibers@chem.northwestern.edu
RI Sougrati, Moulay Tahar/B-6283-2011
OI Sougrati, Moulay Tahar/0000-0003-3740-2807
FU U.S. Department of Energy, Basic Energy Sciences, Biosciences, and
Geosciences Division and Division of Materials Sciences and Engineering
[ER-15522]; National Science Foundation [DMR05-20513, DMR-0084173];
Fonds National de la Recherche Scientifique, Belgium [9.456595,
1.5.064.05]; State of Florida; NSERC; University of Washington; Simon
Fraser University; Pacific Northwest National Laboratory; Advanced
Photon Source; U.S. Department of Energy, Office of Science, Office of
Basic Energy Sciences [DE-AC02-06CH11357]
FX We thank Dr. Christos Malliakas and Prof. Mercouri G. Kanatzidis for
help with the use of their UV-vis-NIR and FT-IR spectrometers and Prof.
N. Edelstein for helpful discussions during the course of this work. The
research at Northwestern University was supported by the U.S. Department
of Energy, Basic Energy Sciences, Biosciences, and Geosciences Division
and Division of Materials Sciences and Engineering Grant ER-15522.
Resistivity measurements were collected at the Northwestern Materials
Research Science and Engineering Center, Magnet and Low Temperature
Facility supported by the National Science Foundation (DMR05-20513).
Fernande Grand jean acknowledges the Fonds National de la Recherche
Scientifique, Belgium (Grants 9.456595 and 1.5.064.05) for financial
support. Magnetic measurements were performed at the National High
Magnetic Field Laboratory, which is supported by the National Science
Foundation through Grant DMR-0084173 and the State of Florida. PNC/XOR
facilities at the Advanced Photon Source and research at these
facilities are supported by the U.S. Department of Energy. Basic Energy
Sciences. a major facilities access grant from NSERC, the University of
Washington, Simon Fraser University, the Pacific Northwest National
Laboratory, and the Advanced Photon Source. Use of the Advanced Photon
Source is also supported by the U.S. Department of Energy, Office of
Science, Office of Basic Energy Sciences, under Contract
DE-AC02-06CH11357.
NR 56
TC 14
Z9 14
U1 1
U2 22
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0020-1669
J9 INORG CHEM
JI Inorg. Chem.
PD NOV 15
PY 2010
VL 49
IS 22
BP 10455
EP 10467
DI 10.1021/ic101474e
PG 13
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA 675FC
UT WOS:000283810800036
PM 20964309
ER
PT J
AU Papatriantafyllopoulou, C
Stamatatos, TC
Wernsdorfer, W
Teat, SJ
Tasiopoulos, AJ
Escuer, A
Perlepes, SP
AF Papatriantafyllopoulou, Constantina
Stamatatos, Theocharis C.
Wernsdorfer, Wolfgang
Teat, Simon J.
Tasiopoulos, Anastasios J.
Escuer, Albert
Perlepes, Spyros P.
TI Combining Azide, Carboxylate, and 2-Pyridyloximate Ligands in
Transition-Metal Chemistry: Ferromagnetic Ni-5(II) Clusters with a
Bowtie Skeleton
SO INORGANIC CHEMISTRY
LA English
DT Article
ID SINGLE-MOLECULE MAGNETS; HIGH-SPIN MOLECULES; TETRANUCLEAR NICKEL(II)
COMPLEXES; MIXED-VALENCE COBALT(II/III); NI-II COMPLEX; HIGH-NUCLEARITY;
GROUND-STATE; CRYSTAL-STRUCTURES; KETONE OXIME;
STRUCTURAL-CHARACTERIZATION
AB The combined use of the anion of phenyl(2-pyridyl)ketone oxime (ppko(-)) and azides (N-3(-)) in nickel(II) carboxylate chemistry has afforded two new Ni-5(II) clusters, [Ni-5(O2CR')(2)(N-3)(4)(ppko)(4)(MeOH)(4)] [R' = H (1), Me (2)]. The structurally unprecedented {Ni-5(mu-N-3)(2)(mu(3)-N-3)(2)}(6+) cores of the two clusters are almost identical and contain the five Ni-II atoms in a bowtie topology. Two N-3(-) ions are end-on doubly bridging and the other two ions end-on triply bridging. The end-on mu(3)-N-3(-) groups link the central Ni-II atoms with the two peripheral metal ions on either side of the molecule, while the Ni center dot center dot center dot Ni bases of the triangles are each bridged by one end-on mu-N-3(-) group. Variable-temperature, solid-state direct(dc) and alternating-current (ac) magnetic susceptibility, and magnetization studies at 2.0 K were carried out on both complexes. The data indicate an overall ferromagnetic behavior and an S = 5 ground state for both compounds. The ac susceptibility studies on 1 reveal nonzero, frequency-dependent out-of-phase (chi(M)'') signals at temperatures below similar to 3:5 K; complex 2 reveals no chi(M)'' signals. However, single-crystal magnetization versus dc field scans at variable temperatures and variable sweep rates down to 0.04 K on 1 reveal no noticeable hysteresis loops, except very minor ones at 0.04 K assignable to weak intermolecular interactions propagated by nonclassical hydrogen bonds.
C1 [Escuer, Albert] Univ Barcelona, Dept Quim Inorgan, Barcelona 08028, Spain.
[Papatriantafyllopoulou, Constantina; Stamatatos, Theocharis C.; Perlepes, Spyros P.] Univ Patras, Dept Chem, Patras 26504, Greece.
[Wernsdorfer, Wolfgang] CNRS, Inst Neel, F-38042 Grenoble 9, France.
[Wernsdorfer, Wolfgang] Univ J Fourier, F-38042 Grenoble 9, France.
[Teat, Simon J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Tasiopoulos, Anastasios J.] Univ Cyprus, Dept Chem, CY-1678 Nicosia, Cyprus.
RP Escuer, A (reprint author), Univ Barcelona, Dept Quim Inorgan, Marti Franques 1-11, Barcelona 08028, Spain.
EM albert.escuer@ub.edu; perlepes@patreas.upatras.gr
RI Escuer, Albert/L-4706-2014; Wernsdorfer, Wolfgang/M-2280-2016
OI Escuer, Albert/0000-0002-6274-6866; Wernsdorfer,
Wolfgang/0000-0003-4602-5257
FU Cyprus Research Promotion Foundation [TECH-NO/0506/06]; CICYT
[CTQ2009-07264]; Operational and Vocational Training II Program
(PYTHAGORAS) [b.365.037]; Office of Basic Energy Sciences of the U.S.
Department of Energy [DE-AC02-05CH11231]
FX We thank one of the reviewers for helpful suggestions concerning the
possible formation of NiO in the preparation of complex 1. Financial
support from the Cyprus Research Promotion Foundation (Grant
TECH-NO/0506/06 to A.J.T.), CICYT Projects (Grant CTQ2009-07264 and
ICREA-Academia Award to A.E.), the Operational and Vocational Training
II Program (PYTHAGORAS; Grant b.365.037 to S.P.P.) is gratefully
acknowledged. We also acknowledge a provision of time at the Advanced
Light Source synchrotron, which is supported by the Director, Office of
Basic Energy Sciences of the U.S. Department of Energy under Contract
DE-AC02-05CH11231.
NR 167
TC 59
Z9 59
U1 0
U2 11
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0020-1669
EI 1520-510X
J9 INORG CHEM
JI Inorg. Chem.
PD NOV 15
PY 2010
VL 49
IS 22
BP 10486
EP 10496
DI 10.1021/ic1014829
PG 11
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA 675FC
UT WOS:000283810800039
PM 20964448
ER
PT J
AU Potter, RG
Camaioni, DM
Vasiliu, M
Dixon, DA
AF Potter, Robert G.
Camaioni, Donald M.
Vasiliu, Monica
Dixon, David A.
TI Thermochemistry of Lewis Adducts of BH3 and Nucleophilic Substitution of
Triethylamine on NH3BH3 in Tetrahydrofuran
SO INORGANIC CHEMISTRY
LA English
DT Article
ID MOLECULAR ADDITION-COMPOUNDS; ELECTRONIC-STRUCTURE THEORY;
COUPLED-CLUSTER THEORY; LITHIUM-ION BATTERIES; CONSISTENT BASIS-SETS;
MM3 FORCE-FIELD; BOND-DISSOCIATION ENERGIES; HYDROGEN STORAGE-SYSTEMS;
CONVERGENT BASIS-SETS; GAUSSIAN-BASIS SETS
AB The thermochemistry of the formation of Lewis base adducts of BH3 in tetrahydrofuran (THF) solution and the gas phase and the kinetics of substitution on ammonia borane by triethylamine are reported. The dative bond energy of Lewis adducts were predicted using density functional theory at the B3LYP/DZVP2 and B3LYP/6-311+G** levels and correlated ab initio molecular orbital theories, including MP2, G3(MP2), and G3(MP2)B3LYP, and compared with available experimental data and accurate CCSD(T)/CBS theory results. The analysis showed that the G3 methods using either the MP2 or the B3LYP geometries reproduce the benchmark results usually to within similar to 1 kcal/mol. Energies calculated at the MP2/aug-cc-pVTZ level for geometries optimized at the B3LYP/DZVP2 or B3LYP/6-311+G** levels give dative bond energies 2-4 kcal/mol larger than benchmark values. The enthalpies for forming adducts in THF were determined by calorimetry and compared with the calculated energies for the gas phase reaction: THFBH3 + L -> LBH3 + THF. The formation of NH3BH3 in THF was observed to yield significantly more heat than gas phase dative bond energies, predict, consistent with strong solvation of NH3BH3. Substitution of NEt3 on NH3BH3 is an equilibrium process in THF solution; (K approximate to 0.2 at 25 degrees C). The reaction obeys a reversible bimolecular kinetic rate law with the Arrhenius parameters: log A = 14.7 +/- 1.1 and E-a = 28.1 +/- 1.5 kcal/mol. Simulation of the mechanism using the SM8 continuum solvation model shows the reaction most likely proceeds primarily by a classical S(N)2 mechanism.
C1 [Potter, Robert G.; Camaioni, Donald M.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Vasiliu, Monica; Dixon, David A.] Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA.
RP Camaioni, DM (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA.
EM camaioni@pnl.gov; dadixon@bama.ua.edu
FU Department of Energy, Office of Energy Efficiency and Renewable Energy
[DE-PS36-03GO93013]; University of Alabama; Department of Energy's
Office of Biological and Environmental Research
FX This work was funded by the Department of Energy, Office of Energy
Efficiency and Renewable Energy under the Hydrogen Storage Grand
Challenge, Solicitation No. DE-PS36-03GO93013. This work was done as
part of the Chemical Hydrogen Storage Center. D.A.D. also thanks the
Robert Ramsay Chair Fund of The University of Alabama for support. A
Portion of this work was performed using the Molecular Sciences
Computing Facility (MSCF) at EMSL, a national scientific user facility
sponsored by the Department of Energy's Office of Biological and
Environmental Research and located at Pacific Northwest National
Laboratory.
NR 149
TC 20
Z9 20
U1 4
U2 33
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0020-1669
EI 1520-510X
J9 INORG CHEM
JI Inorg. Chem.
PD NOV 15
PY 2010
VL 49
IS 22
BP 10512
EP 10521
DI 10.1021/ic101481c
PG 10
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA 675FC
UT WOS:000283810800042
PM 20932027
ER
PT J
AU Tian, GX
Martin, LR
Rao, LF
AF Tian, Guoxin
Martin, Leigh R.
Rao, Linfeng
TI Complexation of Lactate with Neodymium(III) and Europium(III) at
Variable Temperatures: Studies by Potentiometry, Microcalorimetry,
Optical Absorption, and Luminescence Spectroscopy
SO INORGANIC CHEMISTRY
LA English
DT Article
ID LANTHANIDE IONS; HLLW TREATMENT; CTH-PROCESS; TRANSITIONS; ACIDS;
CONSTANTS; AMERICIUM(III); HYDROLYSIS; EXTRACTION; LIGANDS
AB The complexation of neodymium(III) and europium(III) with lactate was studied at variable temperatures by potentiometry, absorption spectrophotometry, luminescence spectroscopy, and microcalorimetry. The stability constants of three successive lactate complexes (ML(2+), ML(2)(+), and ML(3)(aq), where M stands for Nd and Eu and L stands for lactate) at 10, 25, 40, 55, and 70 degrees C were determined. The enthalpies of complexation at 25 degrees C were determined by microcalorimetry. Thermodynamic data show that the complexation of trivalent lanthanides (Nd(3+) and Eu(3+)) with lactate is exothermic and the complexation becomes weaker at higher temperatures. Results from optical absorption and luminescence spectroscopy suggest that the complexes are inner-sphere chelate complexes in which the protonated a-hydroxyl group of lactate participates in the complexation.
C1 [Tian, Guoxin; Rao, Linfeng] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
[Martin, Leigh R.] Idaho Natl Lab, Aqueous Separat & Radiochem Dept, Idaho Falls, ID 83415 USA.
RP Rao, LF (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
EM LRao@lbl.gov
RI Martin, Leigh/P-3167-2016
OI Martin, Leigh/0000-0001-7241-7110
FU U.S. Department of Energy, Office of Nuclear Energy at Lawrence Berkeley
National Laboratory [DE-AC02-05CH11231]; DOE [DE-AC07-05ID14517]
FX This work was supported by the U.S. Department of Energy, Office of
Nuclear Energy, Fuel Research and Development Program, under Contract
DE-AC02-05CH11231 at Lawrence Berkeley National Laboratory. L.R.M.
acknowledges support from DOE NE FCR&D Thermodynamics and Kinetics
program, under DOE Idaho Operations Office Contract DE-AC07-05ID14517
while preparing this manuscript. The authors thank the anonymous
reviewers for their helpful comments.
NR 35
TC 21
Z9 21
U1 3
U2 33
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0020-1669
J9 INORG CHEM
JI Inorg. Chem.
PD NOV 15
PY 2010
VL 49
IS 22
BP 10598
EP 10605
DI 10.1021/ic101592h
PG 8
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA 675FC
UT WOS:000283810800050
PM 20964412
ER
PT J
AU Blair, MW
Bennett, BL
Tornga, SC
Smith, NA
Muenchausen, RE
AF Blair, Michael W.
Bennett, Bryan L.
Tornga, Stephanie C.
Smith, Nickolaus A.
Muenchausen, Ross E.
TI Reduced dimensionality effects on phonon transport
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT International Conference on Flexible and Printed Electronics
CY NOV 11-13, 2009
CL JEJU, SOUTH KOREA
ID SPIN-LATTICE-RELAXATION; INORGANIC SCINTILLATORS; ENERGY RESOLUTION;
MAGNESIUM-NITRATE; TUTTON SALTS; CRYSTALS; EPR; OXYORTHOSILICATE;
NANOPHOSPHORS; LUMINESCENCE
AB Electron paramagnetic resonance (EPR) spectroscopy has been used to study energy transport properties of both bulk and nanophosphor (nominally 30 nm) oxyorthosilicate samples, and we were able to separate the effects of crystal disorder and relaxation lifetime broadening on the EPR linewidths. The low temperature linewidths (T<10 K) were inhomogeneously broadened and dominated by crystal disorder effects and the nanophosphors showed an order of magnitude increase in crystal disorder. Both bulk and nanophosphor samples showed significant lifetime broadening involving direct relaxation via phonons and the Orbach relaxation process. At low temperatures, the lifetimes of the bulk samples displayed the influence of the lattice-bath relaxation time as well as the spin-lattice relaxation time while the lifetimes of the nanophosphor samples were not influenced by the lattice-bath relaxation time. The results imply that reduced dimensionality in insulators does reduce the lattice-bath relaxation time, although the exact relationship cannot be confirmed by this study largely due to the nonideal nature of the materials studied. (C) 2010 American Institute of Physics. [doi:10.1063/1.3510533]
C1 [Blair, Michael W.; Bennett, Bryan L.; Tornga, Stephanie C.; Smith, Nickolaus A.; Muenchausen, Ross E.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Blair, MW (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM mblair@lanl.gov
NR 34
TC 1
Z9 1
U1 0
U2 0
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD NOV 15
PY 2010
VL 108
IS 10
AR 104311
DI 10.1063/1.3510533
PG 7
WC Physics, Applied
SC Physics
GA 690KZ
UT WOS:000285005000125
ER
PT J
AU Crandall, RS
AF Crandall, Richard S.
TI Nature of the metastable boron-oxygen complex formation in crystalline
silicon
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT International Conference on Flexible and Printed Electronics
CY NOV 11-13, 2009
CL JEJU, SOUTH KOREA
ID CELL PERFORMANCE DEGRADATION; DOPED CZOCHRALSKI SILICON; SOLAR-CELLS;
LIFETIME SPECTROSCOPY; ELECTRONIC-PROPERTIES; CARRIER LIFETIME;
TEMPERATURE; CENTERS; DEFECT
AB Transient capacitance measurements reveal new physics of metastable defect formation in boron-doped oxygen-containing crystalline silicon solar cells. These measurements demonstrate that holes are deeply trapped during defect formation and removed during thermal annealing with activation energy of 1.3 eV. Previous theoretical models {Du et al., [Phys. Rev. Lett. 97, 256602 (2006)] and Adey et al., [Phys. Rev. Lett. 93, 055504 (2004)]} are supported by present findings that defect formation is a slow two-stage process with activation energies of 0.17 eV and 0.4 eV at high and low temperature, respectively. Repulsive hole capture by a positive oxygen-dimer determines the defect formation rate at low temperature {Du et al., [ Phys. Rev. Lett. 97, 256602 (2006)]}. The high temperature process is governed by a structural conversion of the dimer {Du et al., [Phys. Rev. Lett. 97, 256602 (2006)] and Adey et al., [Phys. Rev. Lett. 93, 055504 (2004)]}. An abnormally low rate prefactor allows this low-enthalpy reaction to be observed at the higher temperature. This dimer conversion presents an excellent example of an "entropy barrier" that explains the low conversion rate. Disparate formation and annealing results published here and in other publications are related by the Meyer-Neldel rule with an isokinetic temperature of 410 K. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3490754]
C1 Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Crandall, RS (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM bellucci@lnf.infn.it
FU U.S. Department of Energy [DE-AC36-08-GO28308]; National Renewable
Energy Laboratory
FX The author is indebted to Tihu Wang, Matthew Page, Hao-Chih Yuan, and
David Young for sample preparation and other experimental help. I also
benefited from many helpful discussions with Howard Branz and Mao-Hua
Du. This work was supported by the U.S. Department of Energy under
Contract No. DE-AC36-08-GO28308 with the National Renewable Energy
Laboratory.
NR 26
TC 7
Z9 7
U1 0
U2 10
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD NOV 15
PY 2010
VL 108
IS 10
AR 103713
DI 10.1063/1.3490754
PG 6
WC Physics, Applied
SC Physics
GA 690KZ
UT WOS:000285005000078
ER
PT J
AU Deng, HX
Xiang, X
Zheng, WG
Yuan, XD
Wu, SY
Jiang, XD
Gao, F
Zu, XT
Sun, K
AF Deng, H. X.
Xiang, X.
Zheng, W. G.
Yuan, X. D.
Wu, S. Y.
Jiang, X. D.
Gao, F.
Zu, X. T.
Sun, K.
TI Theory of absorption rate of carriers in fused silica under intense
laser irradiation
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT International Conference on Flexible and Printed Electronics
CY NOV 11-13, 2009
CL JEJU, SOUTH KOREA
ID STRONG ELECTROMAGNETIC-WAVE; TRANSPARENT MATERIALS; IMPACT IONIZATION;
PHOTON-ABSORPTION; FIELD; DIELECTRICS; BREAKDOWN; DYNAMICS; DAMAGE; SIO2
AB A nonperturbative quantum theory for phonon-assisted photon absorption of conduction band electron in intense laser was developed. By carrying out the calculation in fused silica at wavelengths from ultraviolet to infrared in terawatt intensity laser, we show that the nonperturbation approach can make a uniform description of energy absorption rate at both short wavelengths and long wavelengths on terawatt per centimeter square intensity laser. c 2010 American Institute of Physics. [doi:10.1063/1.3512963]
C1 [Deng, H. X.; Xiang, X.; Wu, S. Y.; Zu, X. T.] Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China.
[Zheng, W. G.; Yuan, X. D.; Jiang, X. D.] China Acad Engn Phys, Res Ctr Laser Fus, Mianyang 621900, Peoples R China.
[Gao, F.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Deng, H. X.; Sun, K.] Univ Michigan, Dept Mat Engn & Sci, Ann Arbor, MI 48109 USA.
RP Deng, HX (reprint author), Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China.
EM xtzu@uestc.edu.cn; kaisun@umich.edu
RI Gao, Fei/H-3045-2012; ye, xin/K-2615-2014
FU Fundamental Research Funds for the Central Universities [ZYGX2009J046,
ZYGX2009X007]; China Scholarship Council (CSC); A123 Systems, Inc. USA
[N011921]; Royal Academy of Engineering in UK
FX This work was supported by the Fundamental Research Funds for the
Central Universities (Grant Nos. ZYGX2009J046 and ZYGX2009X007), the
China Scholarship Council (CSC), the A123 Systems, Inc. USA (Grant No.
N011921), and Royal Academy of Engineering in UK.
NR 26
TC 7
Z9 7
U1 0
U2 8
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD NOV 15
PY 2010
VL 108
IS 10
AR 103116
DI 10.1063/1.3512963
PG 5
WC Physics, Applied
SC Physics
GA 690KZ
UT WOS:000285005000031
ER
PT J
AU Hopkins, PE
Bauer, ML
Duda, JC
Smoyer, JL
English, TS
Norris, PM
Beechem, TE
Stewart, DA
AF Hopkins, Patrick E.
Bauer, Matthew L.
Duda, John C.
Smoyer, Justin L.
English, Timothy S.
Norris, Pamela M.
Beechem, Thomas E.
Stewart, Derek A.
TI Ultrafast thermoelectric properties of gold under conditions of strong
electron-phonon nonequilibrium
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT International Conference on Flexible and Printed Electronics
CY NOV 11-13, 2009
CL JEJU, SOUTH KOREA
ID BRILLOUIN-ZONE INTEGRATIONS; SCATTERING; METALS
AB The electronic scattering rates in metals after ultrashort pulsed laser heating can be drastically different than those predicted from free electron theory. The large electron temperature achieved after ultrashort pulsed absorption and subsequent thermalization can lead to excitation of subconduction band thermal excitations of electron orbitals far below the Fermi energy. In the case of noble metals, which all have a characteristic flat d-band several electron volts well below the Fermi energy, the onset of d-band excitations has been shown to increase electron-phonon scattering rates by an order of magnitude. In this paper, we investigate the effects of these large electronic thermal excitations on the ultrafast thermoelectric transport properties of gold, a characteristic noble metal. Under conditions of strong electron-phonon nonequilibrium (relatively high electron temperatures and relatively low lattice temperatures, T-e >> T-L), we find that the Wiedemann-Franz law breaks down and the Seebeck coefficient is massively enhanced. Although we perform representative calculations for Au, these results are expected to be similar for the other noble metals (Ag and Cu) due to the characteristic large d-band separation from the Fermi energy. (C) 2010 American Institute of Physics. [doi:10.1063/1.3511341]
C1 [Hopkins, Patrick E.; Beechem, Thomas E.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Bauer, Matthew L.; Duda, John C.; Smoyer, Justin L.; English, Timothy S.; Norris, Pamela M.] Univ Virginia, Dept Mech & Aerosp Engn, Charlottesville, VA 22904 USA.
[Stewart, Derek A.] Cornell Univ, Cornell Nanoscale Sci & Technol Facil, Ithaca, NY 14853 USA.
RP Hopkins, PE (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM pehopki@sandia.gov
RI Duda, John/A-7214-2011; Stewart, Derek/B-6115-2008;
OI Stewart, Derek/0000-0001-7355-2605
FU LDRD Program Office; National Science Foundation; United States
Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL85000]
FX P.E.H. is greatly appreciative for funding from the LDRD Program Office
through the Harry S. Truman Fellowship Program. J.C.D. and T.S.E. are
grateful for financial support from the National Science Foundation
through the Graduate Research Fellowship Program. Sandia National
Laboratories is a multiprogram laboratory operated by Sandia
Corporation, a wholly owned subsidiary of Lockheed-Martin Corporation,
for the United States Department of Energy's National Nuclear Security
Administration under Contract DE-AC04-94AL85000. First principle
calculations were performed on the Intel Cluster at the Cornell
Nanoscale Facility, which is part of the National Nanotechnology
Infrastructure Network funded by the National Science Foundation.
NR 36
TC 4
Z9 4
U1 1
U2 15
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD NOV 15
PY 2010
VL 108
IS 10
AR 104907
DI 10.1063/1.3511341
PG 6
WC Physics, Applied
SC Physics
GA 690KZ
UT WOS:000285005000153
ER
PT J
AU Meng, LJ
Peng, XY
Tang, C
Zhang, KW
Stocks, GM
Zhong, JX
AF Meng, L. J.
Peng, X. Y.
Tang, C.
Zhang, K. W.
Stocks, G. M.
Zhong, J. X.
TI A quasicore-shell structure of FeCo and FeNi nanoparticles
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT International Conference on Flexible and Printed Electronics
CY NOV 11-13, 2009
CL JEJU, SOUTH KOREA
ID EMBEDDED-ATOM-METHOD; MAGNETIC-PROPERTIES; ALLOY NANOCRYSTALS;
MULTILAYERS; CLUSTERS; METALS
AB Based on semiempirical generalized embedded atom method (GEAM), we carried out molecular dynamics and Monte Carlo simulations to study the structural properties of FeCo and FeNi nanoparticles. It is found that these two kinds of nanoparticles possess a new stable quasicore-shell structure, no matter whether they are in molten or condensed state and whether they are prepared by annealing or quenching. In FeCo (FeNi) nanoparticles of various sizes and atom compositions, the quasicore-shell structure is always preferred, with the shell formed only by Fe atoms and the core formed by randomly distributed Co(Ni) and Fe atoms. We have also investigated the formation mechanism of the quasicore-shell structure by energy difference analysis of the pure and doped icosahedra structure of FeCo and FeNi nanoparticles. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3514089]
C1 [Meng, L. J.; Peng, X. Y.; Tang, C.; Zhang, K. W.; Zhong, J. X.] Xiangtan Univ, Key Lab Quantum Engn & Micronano Energy Technol H, Xiangtan 411105, Hunan, Peoples R China.
[Meng, L. J.; Peng, X. Y.; Tang, C.; Zhang, K. W.; Zhong, J. X.] Xiangtan Univ, Fac Mat & Photoelect Phys, Xiangtan 411105, Hunan, Peoples R China.
[Stocks, G. M.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Meng, LJ (reprint author), Xiangtan Univ, Key Lab Quantum Engn & Micronano Energy Technol H, Xiangtan 411105, Hunan, Peoples R China.
EM xiangyang.peng@fysik.uu.se; jxzhong@xtu.edu.cn
RI Zhong, Jianxin/G-1027-2013; Stocks, George Malcollm/Q-1251-2016
OI Zhong, Jianxin/0000-0002-9781-6836; Stocks, George
Malcollm/0000-0002-9013-260X
FU Key Laboratory for Quantum Engineering and Micro-Nano Energy technology
of Hunan Province, Xiangtan University, China; Education Foundation of
Science and Technology Innovation of the Ministry of Education, China
[708068]; Cheung Kong Scholars Programme of China; National Natural
Science Foundation of China [10774127, 10874143, 10974166, 10802071];
Research Foundation of Education Bureau of Hunan Province, China
[10A118, 09A094]; Specialized Research Fund for the Doctoral Program of
Higher Education [200805300003, 10QDZ03, 10QDZ19]
FX The authors gratefully acknowledge the support of the Key Laboratory for
Quantum Engineering and Micro-Nano Energy technology of Hunan Province,
Xiangtan University, China, Education Foundation of Science and
Technology Innovation of the Ministry of Education, China (Grant No.
708068), the Cheung Kong Scholars Programme of China, the Grants from
National Natural Science Foundation of China (Grant Nos. 10774127,
10874143, 10974166, and 10802071), Research Foundation of Education
Bureau of Hunan Province, China (Grant Nos. 10A118 and 09A094) and the
Specialized Research Fund for the Doctoral Program of Higher Education
(Grant Nos. 200805300003, 10QDZ03, and 10QDZ19).
NR 37
TC 2
Z9 2
U1 2
U2 14
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD NOV 15
PY 2010
VL 108
IS 10
AR 104314
DI 10.1063/1.3514089
PG 5
WC Physics, Applied
SC Physics
GA 690KZ
UT WOS:000285005000128
ER
PT J
AU Sankaranarayanan, SKRS
Singh, R
Bhethanabotla, VR
AF Sankaranarayanan, Subramanian K. R. S.
Singh, Reetu
Bhethanabotla, Venkat R.
TI Acoustic streaming induced elimination of nonspecifically bound proteins
from a surface acoustic wave biosensor: Mechanism prediction using
fluid-structure interaction models
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT International Conference on Flexible and Printed Electronics
CY NOV 11-13, 2009
CL JEJU, SOUTH KOREA
ID PARTICLE REMOVAL; ADSORPTION; PROPAGATION; MICROARRAYS; TRENCHES;
CRYSTAL; RESIST
AB Biosensors typically operate in liquid media for detection of biomarkers and suffer from fouling resulting from nonspecific binding of protein molecules to the device surface. In the current work, using a coupled field finite element fluid-structure interaction simulation, we have identified that fluid motion induced by high intensity sound waves, such as those propagating in these sensors, can lead to the efficient removal of the nonspecifically bound proteins thereby eliminating sensor fouling. We present a computational analysis of the acoustic-streaming phenomenon induced biofouling elimination by surface acoustic-waves (SAWs) propagating on a lithium niobate piezoelectric crystal. The transient solutions generated from the developed coupled field fluid solid interaction model are utilized to predict trends in acoustic-streaming induced forces for varying design parameters such as voltage intensity, device frequency, fluid viscosity, and density. We utilize these model predictions to compute the various interaction forces involved and thereby identify the possible mechanisms for removal of nonspecifically-bound proteins. For the range of sensor operating conditions simulated, our study indicates that the SAW motion acts as a body force to overcome the adhesive forces of the fouling proteins to the device surface whereas the acoustic-streaming induced hydrodynamic forces prevent their reattachment. The streaming velocity fields computed using the finite element models in conjunction with the proposed particle removal mechanism were used to identify the optimum conditions that lead to improved removal efficiency. We show that it is possible to tune operational parameters such as device frequency and input voltage to achieve effective elimination of biofouling proteins in typical biosensing media. Our simulation results agree well with previously reported experimental observations. The findings of this work have significant implications in designing reusable, selective, and highly sensitive biosensors. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3503851]
C1 [Sankaranarayanan, Subramanian K. R. S.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Sankaranarayanan, Subramanian K. R. S.; Singh, Reetu; Bhethanabotla, Venkat R.] Univ S Florida, Sensors Res Lab, Dept Chem & Biomed Engn, Tampa, FL 33620 USA.
RP Sankaranarayanan, SKRS (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM skrssank@anl.gov; venkat@eng.usf.edu
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-AC02-06CH11357]; NSF [ECCS-0801929, 733 CHE-0722887]
FX The authors thank the computational facility provided by the Center for
Nanoscale Materials-Argonne National Laboratory. Use of the Center for
Nanoscale Materials was supported by the U.S. Department of Energy,
Office of Science, Office of Basic Energy Sciences, under Contract No.
DE-AC02-06CH11357. The authors also thank the Academic Computing Center
and the Engineering Computing Center at University of South Florida for
providing the computational support. The authors thank Dr. Stefan Cular
of DTRA for useful discussions. This work was supported by NSF Grant
Nos. ECCS-0801929 and 733 CHE-0722887.
NR 49
TC 10
Z9 10
U1 7
U2 28
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD NOV 15
PY 2010
VL 108
IS 10
AR 104507
DI 10.1063/1.3503851
PG 11
WC Physics, Applied
SC Physics
GA 690KZ
UT WOS:000285005000138
ER
PT J
AU Yao, MZ
Zhang, X
Ma, L
Chen, W
Joly, AG
Huang, JS
Wang, QW
AF Yao, Mingzhen
Zhang, Xing
Ma, Lun
Chen, Wei
Joly, Alan G.
Huang, Jinsong
Wang, Qingwu
TI Luminescence enhancement of CdTe nanostructures in LaF3:Ce/CdTe
nanocomposites
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article; Proceedings Paper
CT International Conference on Flexible and Printed Electronics
CY NOV 11-13, 2009
CL JEJU, SOUTH KOREA
ID SHAPE CONTROL; QUANTUM DOTS; NANOPARTICLES; NANOCRYSTALS; CRYSTALS;
FLUORESCENCE; SPECTROSCOPY; IONS
AB Radiation detection demands new scintillators with high quantum efficiency, high energy resolution, and short luminescence lifetimes. Nanocomposites consisting of quantum dots and Ce3+ doped nanophosphors may be able to meet these requirements. Here, we report the luminescence enhancement of LaF3:Ce/CdTe nanocomposites which were synthesized by a wet chemistry method. CdTe quantum dots in LaF3:Ce/CdTe nanocomposites are converted into nanowires, while in LaF3/CdTe nanocomposites no such conversion is observed. As a result, the CdTe luminescence in LaF3:Ce/CdTe nanocomposites is enhanced about five times, while in LaF3/CdTe nanocomposites no enhancement was observed. Energy transfer, light reabsorption, and defect passivation are the likely reasons for the luminescence enhancement. (C) 2010 American Institute of Physics. [doi:10.1063/1.3506416]
C1 [Yao, Mingzhen; Zhang, Xing; Ma, Lun; Chen, Wei] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA.
[Joly, Alan G.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Huang, Jinsong] Univ Nebraska, Dept Mech Engn, Lincoln, NE 68588 USA.
[Wang, Qingwu] Agiltron Inc, Woburn, MA 01801 USA.
RP Yao, MZ (reprint author), Univ Texas Arlington, Dept Phys, POB 19059, Arlington, TX 76019 USA.
EM weichen@uta.edu; agjoly@pnl.gov
FU UTA; NSF; DHS [2008-DN-077-ARI016-03, CBET-1039068]; DOD [DTRA08-005];
U.S. Army Medical Research Acquisition Activity (USAMRAA)
[W81XWH-10-1-0279, W81XWH-10-1-0234]; Department of Energy's Office of
Biological and Environmental Research at the Pacific Northwest National
Laboratory (PNNL); U.S. Department of Energy [DE-AC06-76RLO1830]
FX We would like to acknowledge the support from the start-up funds from
UTA, the NSF, and DHS joint ARI program (2008-DN-077-ARI016-03,
CBET-1039068), DOD DTRA08-005, and the U.S. Army Medical Research
Acquisition Activity (USAMRAA) under Contracts of W81XWH-10-1-0279 and
W81XWH-10-1-0234. Part of the research described was performed at the W.
R. Wiley Environmental Molecular Sciences Laboratory, a national
scientific user facility sponsored by the Department of Energy's Office
of Biological and Environmental Research and located at the Pacific
Northwest National Laboratory (PNNL). PNNL is operated by Battelle for
the U.S. Department of Energy under Contract No. DE-AC06-76RLO1830.
NR 30
TC 10
Z9 10
U1 3
U2 18
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD NOV 15
PY 2010
VL 108
IS 10
AR 103104
DI 10.1063/1.3506416
PG 7
WC Physics, Applied
SC Physics
GA 690KZ
UT WOS:000285005000019
ER
PT J
AU Gong, KP
Chen, WF
Sasaki, K
Su, D
Vukmirovic, MB
Zhou, WP
Izzo, EL
Perez-Acosta, C
Hirunsit, P
Balbuena, PB
Adzic, RR
AF Gong, Kuanping
Chen, Wei-Fu
Sasaki, Kotaro
Su, Dong
Vukmirovic, Miomir B.
Zhou, Weiping
Izzo, Elise L.
Perez-Acosta, Carmen
Hirunsit, Pussana
Balbuena, Perla B.
Adzic, Radoslav R.
TI Platinum-monolayer electrocatalysts Palladium interlayer on IrCo alloy
core improves activity in oxygen-reduction reaction
SO JOURNAL OF ELECTROANALYTICAL CHEMISTRY
LA English
DT Article
DE Electrocatalysts; Iridium; Platinum; Palladium; Oxygen reduction
ID INITIO MOLECULAR-DYNAMICS; TRANSITION; METALS; CATALYSTS; SURFACES;
IRIDIUM
AB We describe the synthesis and electrocatalytic properties of a new low-Pt electrocatalyst consisting of an IrCo core a Pd interlayer and a surface Pt monolayer emphasizing the interlayer s role in improving electrocatalytic activity for the oxygen reduction reaction on Pt in HClO(4) solution We prepared the IrCo alloys by decomposing at 800 C hexacyanometalate KCoIr(cN)(6) adsorbed on the carbon surfaces The synthesis of Ir(3)Co/C involved heating a mix of metal salts and carbon in hydrogen at 500 degrees C Thereafter we placed a palladium and/or platinum monolayer on them via the galvanic displacement of an underpotentially deposited copper monolayer The electrocatalysts were characterized using structural- and electrochemical techniques For Pt(ML)/Pd(ML)/IrCo/C we observed a Pt mass activity of 1 18 A/mg((Pt)) and the platinum group-metals mass of 0 16 A/mg((Pt Pd Ir)) In comparison without a Pd interlayer le Pt(ML)/IrCo/C the activities of 0 15 A/mg(pt) and 0 036 A/mg((Pt Pd Ir)) were considerably lower We consider that the palladium interlayer plays an essential role in achieving high catalytic activity by adjusting the electronic interaction of the platinum monolayer with the IrCo core so that it accelerates the kinetics of adsorption and desorption of the intermediates of oxygen reduction A similar trend was observed for Pt(ML)/Pd(ML), and Pt(ML) deposited on Ir(3)Co/C alloy core We used density functional theory to interpret the observed phenomena (C) 2010 Elsevier B V All rights reserved
C1 [Gong, Kuanping; Chen, Wei-Fu; Sasaki, Kotaro; Su, Dong; Vukmirovic, Miomir B.; Zhou, Weiping; Adzic, Radoslav R.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
[Izzo, Elise L.; Perez-Acosta, Carmen] UTC Power Corp, S Windsor, CT USA.
[Hirunsit, Pussana; Balbuena, Perla B.] Texas A&M Univ, Dept Chem Engn, College Stn, TX 77843 USA.
RP Adzic, RR (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
RI Chen, Wei-Fu/C-5692-2012; zhou, weiping/C-6832-2012; Su,
Dong/A-8233-2013
OI zhou, weiping/0000-0002-8058-7280; Su, Dong/0000-0002-1921-6683
FU US Department of Energy Divisions of Chemical and Material Sciences
[DE-AC02-98CH10886]; UTC Power Corporation South Windsor
[DE-FG36-07GO17019]; Department of Energy Basic Energy Sciences
[DE-FG02-05ER15729]
FX This work is supported in part by US Department of Energy Divisions of
Chemical and Material Sciences under the Contract No DE-AC02-98CH10886
and in part under a grant titled Highly Dispersed Alloy Cathode Catalyst
for Durability (Contract No DE-FG36-07GO17019) via a subcontract from
UTC Power Corporation South Windsor CT P B B also acknowledges the
financial support of the Department of Energy Basic Energy Sciences
Grant DE-FG02-05ER15729
NR 30
TC 28
Z9 28
U1 6
U2 50
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 1572-6657
J9 J ELECTROANAL CHEM
JI J. Electroanal. Chem.
PD NOV 15
PY 2010
VL 649
IS 1-2
SI SI
BP 232
EP 237
DI 10.1016/j.jelechem.2010.04.011
PG 6
WC Chemistry, Analytical; Electrochemistry
SC Chemistry; Electrochemistry
GA 687BZ
UT WOS:000284750200031
ER
PT J
AU Zhang, F
Wu, WM
Parker, JC
Mehlhorn, T
Kelly, SD
Kemner, KM
Zhang, GX
Schadt, C
Brooks, SC
Criddle, CS
Watson, DB
Jardine, PM
AF Zhang, Fan
Wu, Wei-Min
Parker, Jack C.
Mehlhorn, Tonia
Kelly, Shelly D.
Kemner, Kenneth M.
Zhang, Gengxin
Schadt, Christopher
Brooks, Scott C.
Criddle, Craig S.
Watson, David B.
Jardine, Philip M.
TI Kinetic analysis and modeling of oleate and ethanol stimulated uranium
(VI) bio-reduction in contaminated sediments under sulfate reduction
conditions
SO JOURNAL OF HAZARDOUS MATERIALS
LA English
DT Article
DE Bio-stimulation; Microbial reduction; Intermediate products; Acetate;
Hydrogen; Simulate
ID CHAIN FATTY-ACIDS; IN-SITU BIOSTIMULATION; REDUCING BACTERIA; SP NOV.;
BIOREDUCTION; AQUIFER; U(VI); GROUNDWATER; TRANSPORT; IRON
AB Microcosm tests with uranium contaminated sediments were performed to explore the feasibility of using oleate as a slow-release electron donor for U(VI) reduction in comparison to ethanol. Oleate degradation proceeded more slowly than ethanol with acetate produced as an intermediate for both electron donors under a range of initial sulfate concentrations. A kinetic microbial reduction model was developed and implemented to describe and compare the reduction of sulfate and U(VI) with oleate or ethanol. The reaction path model considers detailed oleate/ethanol degradation and the production and consumption of intermediates, acetate and hydrogen. Although significant assumptions are made, the model tracked the major trend of sulfate and U(VI) reduction and describes the successive production and consumption of acetate, concurrent with microbial reduction of aqueous sulfate and U(VI) species. The model results imply that the overall rate of U(VI) bioreduction is influenced by both the degradation rate of organic substrates and consumption rate of intermediate products. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Zhang, Fan; Zhang, Gengxin] Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100085, Peoples R China.
[Wu, Wei-Min; Criddle, Craig S.] Stanford Univ, Dept Civil & Environm Engn, Stanford, CA 94305 USA.
[Parker, Jack C.] Univ Tennessee, Dept Civil & Environm Engn, Knoxville, TN 37996 USA.
[Mehlhorn, Tonia; Schadt, Christopher; Brooks, Scott C.; Watson, David B.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
[Kelly, Shelly D.; Kemner, Kenneth M.] Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA.
[Jardine, Philip M.] Univ Tennessee, Biosyst Engn & Soil Sci Dept, Knoxville, TN 37996 USA.
RP Zhang, F (reprint author), Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, POB 2871, Beijing 100085, Peoples R China.
EM zhangfan@itpcas.ac.cn
RI Brooks, Scott/B-9439-2012; Schadt, Christopher/B-7143-2008; BM,
MRCAT/G-7576-2011; Watson, David/C-3256-2016
OI Brooks, Scott/0000-0002-8437-9788; Schadt,
Christopher/0000-0001-8759-2448; Watson, David/0000-0002-4972-4136
FU U.S. Department of Energy, Office of Science, Office of the Biological
and Environmental Research; U.S. Department of Energy
[DE-AC05-000R22725]
FX This research was funded by the U.S. Department of Energy, Office of
Science, Office of the Biological and Environmental Research. Oak Ridge
National Laboratory is managed by UT-Battelle, LLC, for the U.S.
Department of Energy under Contract DE-AC05-000R22725. The authors thank
Kenneth Lowe and Xiangping Yin for analytical help.
NR 44
TC 12
Z9 13
U1 1
U2 14
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0304-3894
J9 J HAZARD MATER
JI J. Hazard. Mater.
PD NOV 15
PY 2010
VL 183
IS 1-3
BP 482
EP 489
DI 10.1016/j.jhazmat.2010.07.049
PG 8
WC Engineering, Environmental; Engineering, Civil; Environmental Sciences
SC Engineering; Environmental Sciences & Ecology
GA 659ZY
UT WOS:000282607600061
PM 20702039
ER
PT J
AU Calef, MT
AF Calef, Matthew T.
TI Riesz s-equilibrium measures on d-dimensional fractal sets as s
approaches d
SO JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS
LA English
DT Article
DE Riesz potential; Equilibrium measure; Fractal
ID POTENTIALS; DENSITIES
AB Let A be a compact set in R(P) of Hausdorff dimension d. For s E (0,d), the Riesz s-equilibrium measure mu(s,A) is the unique Borel probability measure with support in A that minimizes the double integral over the Riesz s-kernel vertical bar x - y vertical bar(-s) over all such probability measures. In this paper we show that if A is a strictly self-similar d-fractal. then mu(s,A) converges in the weak-star topology to normalized d-dimensional Hausdorff measure restricted to A as s approaches d from below. (C) 2010 Elsevier Inc. All rights reserved.
C1 Los Alamos Natl Lab, Computat Phys CCS 2, Los Alamos, NM 87545 USA.
RP Calef, MT (reprint author), Los Alamos Natl Lab, Computat Phys CCS 2, Los Alamos, NM 87545 USA.
OI Calef, Matthew/0000-0003-4701-7224
NR 18
TC 1
Z9 1
U1 0
U2 2
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0022-247X
J9 J MATH ANAL APPL
JI J. Math. Anal. Appl.
PD NOV 15
PY 2010
VL 371
IS 2
BP 564
EP 572
DI 10.1016/j.jmaa.2010.05.061
PG 9
WC Mathematics, Applied; Mathematics
SC Mathematics
GA 634FY
UT WOS:000280566900016
ER
PT J
AU Egeland, GW
Zuck, LD
Cannon, WR
Lessing, PA
Medvedev, PG
AF Egeland, G. W.
Zuck, L. D.
Cannon, W. R.
Lessing, P. A.
Medvedev, P. G.
TI Dry bag isostatic pressing for improved green strength of surrogate
nuclear fuel pellets
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID POWDER COMPACTION; MECHANICS; CERAMICS; DEFECTS; BINDER
AB Dry bag isostatic pressing is proposed for mass production of nuclear fuel pellets Dry bag isostatically pressed rods of a fuel surrogate (95% CeO(2)-5% HfO(2)) 200 mm long by 8 mm diameter were cut into pellets using a wire saw Four different binders and CeO(2) powder obtained from two different sources were investigated The strength of the isostatically pressed pellets for all binder systems measured by diametral compression was about 50% higher than pellets produced by uniaxial dry pressing at the same pressure It was proposed that the less uniform density of uniaxially pressed pellets accounted for the lower strength The strength of pellets containing CeO(2) powder with significantly higher moisture content was five times higher than pellets containing CeO(2) powder with a low moisture content even though they were 25% less dense Capillary pressure of the moisture was thought to supply the added binding strength Published by Elsevier B V
C1 [Egeland, G. W.; Zuck, L. D.; Cannon, W. R.; Lessing, P. A.; Medvedev, P. G.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Egeland, GW (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA.
FU DOE [LDRD NU101]
FX We would like to thank DOE for funding this project under LDRD NU101 We
also would like to thank Randy Lloyd of Idaho National Lab for
invaluable assistance with mechanical testing The authors also wish to
thank Kenneth J Morris of Isoform Ltd Shropshire TF9 1QS United Kingdom
for dry bag isostatic pressing of rods STI Number INL/JOU-09-17331
NR 22
TC 4
Z9 4
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
J9 J NUCL MATER
JI J. Nucl. Mater.
PD NOV 15
PY 2010
VL 406
IS 2
BP 205
EP 211
DI 10.1016/j.jnucmat.2010.08.022
PG 7
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA 681HX
UT WOS:000284303100001
ER
PT J
AU Lau, GY
Tucker, MC
Jacobson, CP
Visco, SJ
Gleixner, SH
DeJonghe, LC
AF Lau, Grace Y.
Tucker, Michael C.
Jacobson, Craig P.
Visco, Steven J.
Gleixner, Stacy H.
DeJonghe, Lutgard C.
TI Chromium transport by solid state diffusion on solid oxide fuel cell
cathode
SO JOURNAL OF POWER SOURCES
LA English
DT Article
DE Solid oxide fuel cell; Stainless steel; Chromium; LSM; LSCF; LNF
ID ELECTRODES; DEPOSITION; INTERCONNECT
AB Iron-chromium ferritic stainless steel is widely used in solid oxide fuel cell (SOFC) components. At 650-800 degrees C, stainless steels form a protective chromia oxide scale. This low conductivity catalytic compound can degrade SOFC cathode performance. The migration of Cr species onto the cathode occurs through vapor transport and/or solid state diffusion, and electrochemical reactions may affect the migration.
It is important to understand the relative Cr transport and reaction rates to evaluate the most viable commercially available cathode material. This study characterizes the migration of Cr species through solid state diffusion and vapor deposition. Chromia blocks and chromia-forming stainless steel interconnects were held in contact with LSM (Lanthanum Strontium Manganese Oxide), LSCF (Lanthanum Strontium Cobalt Ferrite) and LNF (Lanthanum Nickel Ferrite) perovskite pellets in Cr-saturated air at 700 degrees C for 300 h. XRD (X-ray Diffraction), SEM (Scanning Electron Microscope), EDS (Energy Dispersive X-ray Spectroscopy) and Ion Milling by FIB (Focused Ion Beam) were used to detect Cr on and within the perovskite pellets. Cr transport and reaction on LSCF is the most severe, followed by LSM. Cr transport is observed on LNF, but without noticeable reaction. Published by Elsevier B.V.
C1 [Lau, Grace Y.; Tucker, Michael C.; Jacobson, Craig P.; Visco, Steven J.; DeJonghe, Lutgard C.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Gleixner, Stacy H.] San Jose State Univ, Dept Chem & Mat Engn, San Jose, CA 95192 USA.
RP Lau, GY (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, 1 Cyclotron Rd,MS 62-203, Berkeley, CA 94720 USA.
EM gylau@lbl.gov
FU NETL through US Department of Energy [DE-AC03-76SF00098]
FX I would like to thank Dr. Hideto Kurokawa for help in this project. This
project was sponsored in part by NETL through the SECA program by the US
Department of Energy under the contract number DE-AC03-76SF00098.
NR 15
TC 14
Z9 14
U1 1
U2 32
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-7753
J9 J POWER SOURCES
JI J. Power Sources
PD NOV 15
PY 2010
VL 195
IS 22
SI SI
BP 7540
EP 7547
DI 10.1016/j.jpowsour.2010.06.017
PG 8
WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials
Science, Multidisciplinary
SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science
GA 639KX
UT WOS:000280974800008
ER
PT J
AU Yoon, KJ
Cramer, CN
Stevenson, JW
Marina, OA
AF Yoon, Kyung Joong
Cramer, Carolyn N.
Stevenson, Jeffry W.
Marina, Olga A.
TI Advanced ceramic interconnect material for solid oxide fuel cells:
Electrical and thermal properties of calcium- and nickel-doped yttrium
chromites
SO JOURNAL OF POWER SOURCES
LA English
DT Article
DE Doped yttrium chromite; Perovskite; Solid oxide fuel cell; Ceramic
interconnect; Conductivity; Sinterability
ID SUBSTITUTED LANTHANUM CHROMITE; NI)O3 PEROVSKITE SYSTEM; ELECTROCHEMICAL
PROPERTIES; MECHANICAL-PROPERTIES; TRANSPORT-PROPERTIES; CATION
SUBSTITUTION; SEEBECK COEFFICIENT; CHEMICAL-STABILITY; CONDUCTIVITY;
EXPANSION
AB The structural, thermal and electrical characteristics of calcium- and nickel-doped yttrium chromites were studied for potential use as the interconnect material in high temperature solid oxide fuel cells (SOFCs) and other high temperature electrochemical and thermoelectric devices. The Y(0.8)Ca(0.2)Cr(1-x)Ni(x)O(3+/-delta) compositions with x = 0-0.15 showed single phase orthorhombic perovskite structures between 25 and 1200 degrees C over a wide range of oxygen partial pressures. Nickel doping remarkably enhanced sintering behavior of otherwise refractory chromites, and densities 94% of theoretical density were obtained after sintering at 1400 degrees C in air with 15 at.% Ni. The thermal expansion coefficient (TEC) was increased with nickel content to closely match that of an 8 mol% yttria-stabilized zirconia (YSZ) electrolyte for 0.05 <= x <= 0.15. Nickel doping significantly improved the electrical conductivity in both oxidizing and reducing atmospheres. Undesirable oxygen ion "leakage" current was insignificant in dual atmosphere conditions. No interfacial interactions with YSZ were detected after firing at 1400 degrees C. Published by Elsevier B.V.
C1 [Yoon, Kyung Joong] Pacific NW Natl Lab, Energy & Environm Directorate, Richland, WA 99354 USA.
RP Yoon, KJ (reprint author), Pacific NW Natl Lab, Energy & Environm Directorate, 902 Battelle Blvd, Richland, WA 99354 USA.
EM kyungjoong.yoon@pnl.gov
FU U.S. Department of Energy's Solid-State Energy Conversion Alliance
(SECA); U.S. Department of Energy [DE-AC06-76RLO 1830]
FX The authors appreciate the high temperature XRD performed by T. Varga,
the SEM analysis by A.L. Schemer-Kohrn, and SEM sample preparation by S.
Carlson. The work summarized in this paper was funded by the U.S.
Department of Energy's Solid-State Energy Conversion Alliance (SECA)
Core Technology Program. PNNL is operated by Battelle Memorial Institute
for the U.S. Department of Energy under Contract DE-AC06-76RLO 1830.
NR 47
TC 13
Z9 13
U1 1
U2 8
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-7753
J9 J POWER SOURCES
JI J. Power Sources
PD NOV 15
PY 2010
VL 195
IS 22
SI SI
BP 7587
EP 7593
DI 10.1016/j.jpowsour.2010.06.040
PG 7
WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials
Science, Multidisciplinary
SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science
GA 639KX
UT WOS:000280974800015
ER
PT J
AU Vijayakumar, M
Burton, SD
Huang, C
Li, LY
Yang, ZG
Graff, GL
Liu, J
Hu, JZ
Skyllas-Kazacos, M
AF Vijayakumar, M.
Burton, Sarah D.
Huang, Cheng
Li, Liyu
Yang, Zhenguo
Graff, Gordon L.
Liu, Jun
Hu, Jianzhi
Skyllas-Kazacos, Maria
TI Nuclear magnetic resonance studies on vanadium(IV) electrolyte solutions
for vanadium redox flow battery
SO JOURNAL OF POWER SOURCES
LA English
DT Article
DE Vanadium redox flow battery; Vanadyl ion; Water exchange reaction;
Molecular dynamics; O-17 NMR
ID HYPERFINE COUPLING-CONSTANTS; TRANSITION-METAL-COMPLEXES;
DENSITY-FUNCTIONAL THEORY; NMR-RELAXATION; PHOTOVOLTAIC SYSTEMS;
ABSORPTION-SPECTRA; EXCHANGE REACTIONS; SHIELDING TENSORS;
AQUEOUS-SOLUTIONS; CELL ELECTROLYTE
AB The vanadium(IV) electrolyte solutions with various vanadium concentrations are studied by variable temperature H-1 and O-17 nuclear magnetic resonance (NMR) spectroscopy. The structure and kinetics of vanadium(IV) species in the electrolyte solutions are explored with respect to vanadium concentration and temperature. It was found that the vanadium(IV) species exist as hydrated vanadyl ion, i.e. [VO(H2O)(5)](2+) forming an octahedral coordination with vanadyl oxygen in the axial position and the remaining positions occupied by water molecules. This hydrated vanadyl ion structure is stable in vanadium concentrations up to 3 M and in the temperature range of 240-340 K. The sulfate anions in the electrolyte solutions are found to be weekly bound to this hydrated vanadyl ion and occupies its second-coordination sphere. The possible effects of these sulfate anions in proton and water exchange between vanadyl ion and solvent molecules are discussed based on H-1 and O-17 NMR results. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Vijayakumar, M.; Burton, Sarah D.; Huang, Cheng; Li, Liyu; Yang, Zhenguo; Graff, Gordon L.; Liu, Jun; Hu, Jianzhi] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Skyllas-Kazacos, Maria] Univ New S Wales, Sydney, NSW 2052, Australia.
RP Yang, ZG (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM vijayakumar.murugesan@pnl.gov; zgary.yang@pnl.gov; Jianzhi.Hu@pnl.gov
RI Murugesan, Vijayakumar/C-6643-2011; Hu, Jian Zhi/F-7126-2012
OI Murugesan, Vijayakumar/0000-0001-6149-1702;
FU Pacific Northwest National Laboratory (PNNL); Office of Electricity (OE
Delivery & Energy Reliability (OE); U.S. Department of Energy (DOE)
[57558]; DOE's Office of Biological and Environmental Research (BER)
FX The work is supported by Laboratory-Directed Research and Development
Program (LDRD) of the Pacific Northwest National Laboratory (PNNL), and
by the Office of Electricity (OE Delivery & Energy Reliability (OE)),
U.S. Department of Energy (DOE) under contract #57558. The NMR work was
carried out at the Environmental and Molecular Science Laboratory, a
national scientific user facility sponsored by the DOE's Office of
Biological and Environmental Research (BER). PNNL is a multiprogram
laboratory operated by Battelle Memorial Institute for the Department of
Energy under contract DE-AC05-76RL01830. We thank Dr. Birgit Schwenzer
and Prof. Huamin Zhang for valuable suggestions and fruitful
discussions.
NR 48
TC 47
Z9 50
U1 6
U2 64
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-7753
J9 J POWER SOURCES
JI J. Power Sources
PD NOV 15
PY 2010
VL 195
IS 22
SI SI
BP 7709
EP 7717
DI 10.1016/j.jpowsour.2010.05.008
PG 9
WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials
Science, Multidisciplinary
SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science
GA 639KX
UT WOS:000280974800030
ER
PT J
AU Qiao, JW
Zhang, JT
Jiang, F
Zhang, Y
Liaw, PK
Ren, Y
Chen, GL
AF Qiao, J. W.
Zhang, J. T.
Jiang, F.
Zhang, Y.
Liaw, P. K.
Ren, Y.
Chen, G. L.
TI Development of plastic Ti-based bulk-metallic-glass-matrix composites by
controlling the microstructures
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE Bulk amorphous glasses; Composites; Fracture; Synchrotron X-ray
diffraction; Bridgman solidification
ID BRIDGMAN SOLIDIFICATION; MECHANICAL-PROPERTIES; TENSILE DUCTILITY
AB Lightweight and plastic Ti-based bulk-metallic-glass-matrix composites (BMGMCs) were fabricated by the Bridgman solidification. The beta-Ti dendrites were uniformly distributed within the glass matrix. By tailoring the withdrawal velocity,nu, the linear dependences of the spanning length, s, and the volume fraction, nu(f), of dendrites can be determined as: s = 30 nu + 139 and nu(f) = 12 nu + 50, respectively. The plasticity of Ti-based BMGMCs was extensively studied in terms of the interdendrite spacing and the volume fraction of dendrites. An inverted U-shaped characteristic of the plasticity with the withdrawal velocity has been identified and explained. The present research gave a way for the design of plastic BMGMCs. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Qiao, J. W.; Zhang, J. T.; Zhang, Y.; Chen, G. L.] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China.
[Qiao, J. W.; Jiang, F.; Liaw, P. K.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
[Ren, Y.] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA.
RP Qiao, JW (reprint author), Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China.
EM qiaojunwei@gmail.com; drzhangy@skl.ustb.edu.cn
RI ZHANG, Yong/B-7928-2009
OI ZHANG, Yong/0000-0002-6355-9923
FU National Basic Research Program of China (the 973 Program)
[2007CB613903]; National Science Foundation [DMR-0231320, DMR-0421219,
DMR-0909037, CMMI-0900271]; U. S. Department of Energy, Office of
Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
FX Y.Z. would like to acknowledge the support by the National Basic
Research Program of China (the 973 Program) under the contract No. of
2007CB613903. P.K.L. is very grateful to the support by the National
Science Foundation Programs (DMR-0231320, DMR-0421219, DMR-0909037, and
CMMI-0900271) with Drs. C.V. Cooper, A. Ardell, D. Finotello, C. Huber,
and C. Bouldin as Pro-gram Directors. The Use of the Advanced Photon
Source at Argonne National Laboratory was supported by the U. S.
Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract No. DE-AC02-06CH11357.
NR 21
TC 21
Z9 23
U1 6
U2 31
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD NOV 15
PY 2010
VL 527
IS 29-30
BP 7752
EP 7756
DI 10.1016/j.msea.2010.08.055
PG 5
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 676EJ
UT WOS:000283892600038
ER
PT J
AU Zhang, XJ
Huang, L
Chen, X
Liaw, PK
An, K
Zhang, T
Wang, GY
AF Zhang, Xinjian
Huang, Lu
Chen, Xu
Liaw, Peter K.
An, Ke
Zhang, Tao
Wang, Gongyao
TI Mechanical behavior of Fe75Mo5P10C7.5B2.5 bulk-metallic glass under
torsional loading
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE Bulk-metallic glass; Fe75Mo5P10C7.5B2.5; Fracture strength; Torsional
fatigue; Fracture morphology
ID SOFT-MAGNETIC PROPERTIES; FATIGUE BEHAVIOR; AMORPHOUS-ALLOYS;
FRACTURE-BEHAVIOR; COMPOSITE; SYSTEMS; MODEL; STATE
AB Pure- and cyclic-torsional studies were conducted on a Fe75Mo5P10C7.5B2.5 (atomic percent, at.%) bulk-metallic glass at room temperature for an understanding of its damage and fracture mechanisms. Under pure-torsional loading, the metallic glass exhibited very little plastic strain before fracture. The fracture initiated along the maximum tensile-stress plane, which is about 45 to the axial direction. The shear-fracture strength (similar to 510 MPa) is much lower than the compressive-fracture strength (similar to 3280 MPa), which suggests that different deformation mechanisms be present under various loading modes. Instead of an apparent vein-type structure, the fracture morphologies revealed a crack-initiation site, a mirror region, a mist region, and a hackle region. Under cyclic-torsional loading, fatigue cracks initiated from casting defects, and propagate generally along the maximum tensile-stress plane. A slight cyclic-hardening behavior was observed in initial loading steps. The fatigue-fracture surface consists of three main regions: the fatigue crack-initiation, crack-propagation, and final-fast-fracture areas. The striations resulting from the blunting and re-sharpening of the fatigue crack tip were observed in the crack-propagation region. Based on these results, the damage and fracture mechanisms of the metallic glass induced by torsional loadings are elucidated. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Zhang, Xinjian; Chen, Xu] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China.
[Huang, Lu; Liaw, Peter K.; Wang, Gongyao] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
[An, Ke] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
[Huang, Lu; Zhang, Tao] Beijing Univ Aeronaut & Astronaut, Key Lab Aerosp Mat & Performance, Minist Educ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China.
RP Chen, X (reprint author), Tianjin Univ, Sch Chem Engn & Technol, 92 Weijin Rd, Tianjin 300072, Peoples R China.
EM xchen@tju.edu.cn
RI Chen, Xu/A-8487-2008; Huang, Lu/H-5325-2012; Huang, Lu/L-4643-2013; An,
Ke/G-5226-2011; Zhang, Tao/O-4911-2014
OI Huang, Lu/0000-0001-8318-2687; Huang, Lu/0000-0001-8318-2687; An,
Ke/0000-0002-6093-429X;
FU Program for Changjiang Scholars and Innovative Research Team in
University [IRT0641]; Program of Introducing Talents of Discipline to
Universities [B06006]; National Science Foundation; Division of
Materials Sciences and Engineering. Office of Basic Energy Sciences,
U.S. Department of Energy [DE-AC05-00OR22725]
FX This work is supported by the Program for Changjiang Scholars and
Innovative Research Team in University (No. IRT0641) and the Program of
Introducing Talents of Discipline to Universities (No. B06006). Peter K.
Liaw would like to acknowledge the support of the National Science
Foundation International Materials Institutes (IMI) Program with Drs C.
Huber, U. Venkateswaran, and D. Finotello as program directors. K. An
acknowledges the support by the Division of Materials Sciences and
Engineering. Office of Basic Energy Sciences, U.S. Department of Energy
under Contract DE-AC05-00OR22725 with UT-Battelle, LLC. The authors are
grateful to Dr. A. Takeuchi of Tohoku University for his helpful
suggestions and literatures.
NR 38
TC 1
Z9 1
U1 3
U2 20
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD NOV 15
PY 2010
VL 527
IS 29-30
BP 7801
EP 7807
DI 10.1016/j.msea.2010.08.072
PG 7
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 676EJ
UT WOS:000283892600045
ER
PT J
AU Bissell, MJ
AF Bissell, Mina J.
TI Cell Biology: A Love Affair
SO MOLECULAR BIOLOGY OF THE CELL
LA English
DT Editorial Material
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Bissell, MJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
EM mjbissell@lbl.gov
FU NCI NIH HHS [R01 CA057621, R37 CA064786]
NR 3
TC 0
Z9 0
U1 0
U2 2
PU AMER SOC CELL BIOLOGY
PI BETHESDA
PA 8120 WOODMONT AVE, STE 750, BETHESDA, MD 20814-2755 USA
SN 1059-1524
J9 MOL BIOL CELL
JI Mol. Biol. Cell
PD NOV 15
PY 2010
VL 21
IS 22
BP 3790
EP 3790
DI 10.1091/mbc.E10-04-0337
PG 1
WC Cell Biology
SC Cell Biology
GA 680FC
UT WOS:000284216800012
PM 21079012
ER
PT J
AU Nogales, E
AF Nogales, Eva
TI My Dream of a Fantastic Voyage to See the Inner Workings of a Cell
SO MOLECULAR BIOLOGY OF THE CELL
LA English
DT Editorial Material
C1 [Nogales, Eva] Univ Calif Berkeley, Howard Hughes Med Inst, Dept Mol & Cell Biol, Berkeley, CA 94720 USA.
[Nogales, Eva] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Nogales, E (reprint author), Univ Calif Berkeley, Howard Hughes Med Inst, Dept Mol & Cell Biol, Berkeley, CA 94720 USA.
EM enogales@lbl.gov
FU Howard Hughes Medical Institute
NR 0
TC 0
Z9 0
U1 0
U2 2
PU AMER SOC CELL BIOLOGY
PI BETHESDA
PA 8120 WOODMONT AVE, STE 750, BETHESDA, MD 20814-2755 USA
SN 1059-1524
J9 MOL BIOL CELL
JI Mol. Biol. Cell
PD NOV 15
PY 2010
VL 21
IS 22
BP 3815
EP 3815
DI 10.1091/mbc.E10-05-0385
PG 1
WC Cell Biology
SC Cell Biology
GA 680FC
UT WOS:000284216800026
PM 21079026
ER
PT J
AU Aoki, S
Ariga, A
Arrabito, L
Autiero, D
Besnier, M
Bozza, C
Buontempo, S
Carrara, E
Consiglio, L
Cozzi, M
D'Ambrosio, N
De Lellis, G
Declais, Y
De Serio, M
Di Capua, F
Di Crescenzo, A
Di Ferdinando, D
Di Marco, N
Duchesneau, D
Ereditato, A
Esposito, LS
Fukuda, T
Giacomelli, G
Giorgini, M
Grella, G
Hamada, K
Ieva, M
Juget, F
Kitagawa, N
Knuesel, J
Kodama, K
Komatsu, M
Kose, U
Kreslo, I
Laktineh, I
Longhin, A
Lundberg, B
Lutter, G
Mandrioli, G
Marotta, A
Meisel, F
Migliozzi, P
Morishima, K
Muciaccia, MT
Naganawa, N
Nakamura, M
Nakano, T
Niwa, K
Nonoyama, Y
Paolone, V
Pastore, A
Patrizii, L
Pistillo, C
Pozzato, M
Pupilli, F
Rameika, R
Rescigno, R
Rosa, G
Russo, A
Sato, O
Lavina, LS
Simone, S
Sioli, M
Sirignano, C
Sirri, G
Strolin, P
Tenti, M
Tioukov, V
Yoshida, J
Yoshioka, T
AF Aoki, S.
Ariga, A.
Arrabito, L.
Autiero, D.
Besnier, M.
Bozza, C.
Buontempo, S.
Carrara, E.
Consiglio, L.
Cozzi, M.
D'Ambrosio, N.
De Lellis, G.
Declais, Y.
De Serio, M.
Di Capua, F.
Di Crescenzo, A.
Di Ferdinando, D.
Di Marco, N.
Duchesneau, D.
Ereditato, A.
Esposito, L. S.
Fukuda, T.
Giacomelli, G.
Giorgini, M.
Grella, G.
Hamada, K.
Ieva, M.
Juget, F.
Kitagawa, N.
Knuesel, J.
Kodama, K.
Komatsu, M.
Kose, U.
Kreslo, I.
Laktineh, I.
Longhin, A.
Lundberg, B.
Lutter, G.
Mandrioli, G.
Marotta, A.
Meisel, F.
Migliozzi, P.
Morishima, K.
Muciaccia, M. T.
Naganawa, N.
Nakamura, M.
Nakano, T.
Niwa, K.
Nonoyama, Y.
Paolone, V.
Pastore, A.
Patrizii, L.
Pistillo, C.
Pozzato, M.
Pupilli, F.
Rameika, R.
Rescigno, R.
Rosa, G.
Russo, A.
Sato, O.
Lavina, L. Scotto
Simone, S.
Sioli, M.
Sirignano, C.
Sirri, G.
Strolin, P.
Tenti, M.
Tioukov, V.
Yoshida, J.
Yoshioka, T.
TI Measurement of low-energy neutrino cross-sections with the PEANUT
experiment
SO NEW JOURNAL OF PHYSICS
LA English
DT Article
ID NUCLEAR-EMULSIONS; OPERA EXPERIMENT; BEAM; MICROSCOPES; MOMENTUM;
SYSTEM; EVENT
AB The PEANUT experiment was designed to study the NuMi neutrino beam at Fermilab. The detector uses a hybrid technique, being made of nuclear emulsions and scintillator trackers. Emulsion films act as a micrometric tracking device and are interleaved with lead plates used as passive material. The detector is designed to precisely reconstruct the topology of neutrino interactions and hence to measure the different contributions to the cross section. We present here the full reconstruction and analysis of 147 neutrino interactions and the measurement of the quasi-elastic, resonance and deep-inelastic contributions to the total charged current cross section at the energies of the NuMi neutrino beam. This technique could be applied for beam monitoring in future neutrino facilities, and this paper shows its proof-of-principle.
C1 [Buontempo, S.; De Lellis, G.; Di Capua, F.; Di Crescenzo, A.; Marotta, A.; Migliozzi, P.; Russo, A.; Lavina, L. Scotto; Strolin, P.; Tioukov, V.] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy.
[Ariga, A.; Ereditato, A.; Juget, F.; Knuesel, J.; Kreslo, I.; Lutter, G.; Meisel, F.; Pistillo, C.] Univ Bern, High Energy Phys Lab, A Einstein Ctr Fundamental Phys, CH-3012 Bern, Switzerland.
[Arrabito, L.; Autiero, D.; Declais, Y.; Laktineh, I.] Univ Lyon 1, CNRS, IN2P3, IPNL, F-69622 Villeurbanne, France.
[Besnier, M.; Duchesneau, D.] Univ Savoie, CNRS, IN2P3, LAPP, F-74941 Annecy Le Vieux, France.
[Bozza, C.; Grella, G.; Kose, U.; Sirignano, C.] Univ Salerno, Dipartimento Fis, I-84084 Salerno, Italy.
[Bozza, C.; Grella, G.; Kose, U.; Sirignano, C.] Ist Nazl Fis Nucl, I-84084 Salerno, Italy.
[Aoki, S.] Kobe Univ, Kobe, Hyogo 6578501, Japan.
[Carrara, E.; Longhin, A.] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy.
[Carrara, E.; Longhin, A.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Consiglio, L.; Cozzi, M.; Giacomelli, G.; Giorgini, M.; Pozzato, M.; Tenti, M.] Univ Bologna, Dipartimento Fis, I-40127 Bologna, Italy.
[Consiglio, L.; Di Ferdinando, D.; Giacomelli, G.; Giorgini, M.; Mandrioli, G.; Pozzato, M.; Sioli, M.; Sirri, G.; Tenti, M.] Ist Nazl Fis Nucl, Sez Bologna, I-40127 Bologna, Italy.
[D'Ambrosio, N.; Esposito, L. S.] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67010 Laquila, Italy.
[De Lellis, G.; Di Crescenzo, A.; Russo, A.; Strolin, P.] Univ Naples Federico 2, Dipartimento Sci Fis, I-80126 Naples, Italy.
[De Serio, M.; Ieva, M.; Muciaccia, M. T.; Pastore, A.; Simone, S.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Di Marco, N.] Univ Aquila, Dipartimento Fis, I-67100 Laquila, Italy.
[Di Marco, N.] Ist Nazl Fis Nucl, I-67100 Laquila, Italy.
[Fukuda, T.; Hamada, K.; Kitagawa, N.; Komatsu, M.; Morishima, K.; Naganawa, N.; Nakamura, M.; Nakano, T.; Niwa, K.; Nonoyama, Y.; Sato, O.; Yoshida, J.; Yoshioka, T.] Nagoya Univ, Nagoya, Aichi 4648602, Japan.
[Kodama, K.] Aichi Univ Educ, Kariya, Aichi 4488542, Japan.
[Lundberg, B.; Rameika, R.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Muciaccia, M. T.; Pastore, A.; Simone, S.] Univ Bari, Dipartmento Fis, I-70126 Bari, Italy.
[Paolone, V.] Univ Pittsburgh, Dept Phys, Pittsburgh, PA 15260 USA.
[Rosa, G.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
[Rosa, G.] Ist Nazl Fis Nucl, I-00185 Rome, Italy.
RP De Lellis, G (reprint author), Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy.
EM delellis@na.infn.it
RI buotempo, salvatore/B-5210-2012; sirignano, cesare/I-8498-2012; Sirri,
Gabriele/J-5067-2012; Tioukov, Valeri/H-9939-2016; Migliozzi,
Pasquale/I-6427-2015; Aoki, Shigeki/L-6044-2015;
OI D'Ambrosio, Nicola/0000-0001-9849-8756; Sirri,
Gabriele/0000-0003-2626-2853; Tioukov, Valeri/0000-0001-5981-5296;
Grella, Giuseppe/0000-0002-0147-9477; Simone,
Saverio/0000-0003-3631-8398; Longhin, Andrea/0000-0001-9103-9936;
Migliozzi, Pasquale/0000-0001-5497-3594; Tenti,
Matteo/0000-0002-4254-5901; De Serio, Marilisa/0000-0003-4915-7933
NR 26
TC 2
Z9 2
U1 0
U2 6
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1367-2630
J9 NEW J PHYS
JI New J. Phys.
PD NOV 15
PY 2010
VL 12
AR 113028
DI 10.1088/1367-2630/12/11/113028
PG 15
WC Physics, Multidisciplinary
SC Physics
GA 687JH
UT WOS:000284774300002
ER
PT J
AU Azhgirey, IL
Belyakov-Bodin, VI
Degtyarev, II
Sherstnev, VA
Mashnik, SG
Gallmeier, FX
Lu, W
AF Azhgirey, I. L.
Belyakov-Bodin, V. I.
Degtyarev, I. I.
Sherstnev, V. A.
Mashnik, S. G.
Gallmeier, F. X.
Lu, W.
TI CTOF measurements and Monte Carlo analyses of neutron spectra for the
backward direction from a lead target irradiated with 200-1000 MeV
protons
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM
INTERACTIONS WITH MATERIALS AND ATOMS
LA English
DT Article
DE Measurement; Neutron spectrum; Comparison; Prediction by the MARS; The
RTS&T; The MCNPX; The MCNP6 code systems
ID INTRANUCLEAR-CASCADE CALCULATION; MODEL
AB A calorimetric time-of-flight technique was used for real-time high-precision measurement of neutron spectra at an angle of 175 degrees from the initial proton beam direction which hits a face plane of a cylindrical lead target of 20 cm in diameter and 25 cm thick A comparison was performed between the neutron spectra predicted by the MARS RTS&T MCNP6 and the MCNPX 2 6 0 transport codes and that measured for 200 400 600 800 and 1000 MeV protons Neutron spectra were measured within the energy range from 0 7 to 250 MeV almost continuously The transport codes tested here describe with different success the measured spectra depending on the energy of the detected neutrons and on the incident proton energy but all the models agree reasonably well with our data (C) 2010 Elsevier B V All rights reserved
C1 [Azhgirey, I. L.; Belyakov-Bodin, V. I.; Degtyarev, I. I.] Inst High Energy Phys, Protvino, Russia.
[Sherstnev, V. A.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Mashnik, S. G.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Gallmeier, F. X.; Lu, W.] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA.
RP Belyakov-Bodin, VI (reprint author), Inst High Energy Phys, Protvino, Russia.
FU US DOE
FX We are grateful to G A Losev and A V Feofilov (both of the Institute for
High Energy Physics) for providing the beam so reliably under the
conditions demanded for this experiment This work was partially
supported by the US DOE
NR 38
TC 1
Z9 1
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-583X
EI 1872-9584
J9 NUCL INSTRUM METH B
JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms
PD NOV 15
PY 2010
VL 268
IS 22
BP 3426
EP 3433
DI 10.1016/j.nimb.2010.09.005
PG 8
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Atomic, Molecular & Chemical; Physics, Nuclear
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 686BE
UT WOS:000284671000003
ER
PT J
AU Osipenko, M
Ricco, G
Simula, S
Ripani, M
Taiuti, M
Adhikari, KP
Amaryan, MJ
Anghinolfi, M
Avakian, H
Baghdasaryan, H
Battaglieri, M
Batourine, V
Bedlinskiy, I
Biselli, AS
Branford, D
Briscoe, WJ
Brooks, WK
Burkert, VD
Careccia, SL
Carman, DS
Cole, PL
Collins, P
Crede, V
D'Angelo, A
Daniel, A
Dashyan, N
De Vita, R
De Sanctis, E
Deur, A
Dey, B
Dhamija, S
Dickson, R
Djalali, C
Doughty, D
Dupre, R
Egiyan, H
El Alaoui, A
Eugenio, P
Fegan, S
Forest, TA
Fradi, A
Gabrielyan, MY
Gevorgyan, N
Gilfoyle, GP
Giovanetti, KL
Gohn, W
Gothe, RW
Griffioen, KA
Guo, L
Hafidi, K
Hakobyan, H
Hanretty, C
Hassall, N
Heddle, D
Hicks, K
Holtrop, M
Ilieva, Y
Ireland, DG
Isupov, EL
Jawalkar, SS
Jo, HS
Joo, K
Keller, D
Khandaker, M
Khetarpal, P
Kim, W
Klein, A
Klein, FJ
Kubarovsky, V
Kuhn, SE
Kuleshov, SV
Kuznetsov, V
Livingston, K
Lu, HY
Martinez, D
Mayer, M
McAndrew, J
McCracken, ME
McKinnon, B
Meyer, CA
Mirazita, M
Mokeev, V
Moreno, B
Moriya, K
Morrison, B
Moutarde, H
Munevar, E
Nadel-Turonski, P
Nasseripour, R
Niccolai, S
Niculescu, I
Ostrovidov, AI
Paremuzyan, R
Park, K
Park, S
Pasyuk, E
Pereira, SA
Pisano, S
PogoreIko, O
Pozdniakov, S
Price, JW
Procureur, S
Prok, Y
Protopopescu, D
Raue, BA
Rosner, G
Rossi, P
Sabatie, F
Saini, MS
Salamanca, J
Salgado, C
Saracco, P
Schumacher, RA
Seraydaryan, H
Sharabian, YG
Smith, ES
Sober, D
Sokhan, D
Stepanyan, SS
Stepanyan, S
Stoler, P
Strauch, S
Tedeschi, DJ
Tkachenko, S
Ungaro, M
Vernarsky, B
Vineyard, MF
Voutier, E
Watts, DP
Weygand, DP
Wood, MH
Yegneswaran, A
Zhang, J
Zhao, B
AF Osipenko, M.
Ricco, G.
Simula, S.
Ripani, M.
Taiuti, M.
Adhikari, K. P.
Amaryan, M. J.
Anghinolfi, M.
Avakian, H.
Baghdasaryan, H.
Battaglieri, M.
Batourine, V.
Bedlinskiy, I.
Biselli, A. S.
Branford, D.
Briscoe, W. J.
Brooks, W. K.
Burkert, V. D.
Careccia, S. L.
Carman, D. S.
Cole, P. L.
Collins, P.
Crede, V.
D'Angelo, A.
Daniel, A.
Dashyan, N.
De Vita, R.
De Sanctis, E.
Deur, A.
Dey, B.
Dhamija, S.
Dickson, R.
Djalali, C.
Doughty, D.
Dupre, R.
Egiyan, H.
El Alaoui, A.
Eugenio, P.
Fegan, S.
Forest, T. A.
Fradi, A.
Gabrielyan, M. Y.
Gevorgyan, N.
Gilfoyle, G. P.
Giovanetti, K. L.
Gohn, W.
Gothe, R. W.
Griffioen, K. A.
Guo, L.
Hafidi, K.
Hakobyan, H.
Hanretty, C.
Hassall, N.
Heddle, D.
Hicks, K.
Holtrop, M.
Ilieva, Y.
Ireland, D. G.
Isupov, E. L.
Jawalkar, S. S.
Jo, H. S.
Joo, K.
Keller, D.
Khandaker, M.
Khetarpal, P.
Kim, W.
Klein, A.
Klein, F. J.
Kubarovsky, V.
Kuhn, S. E.
Kuleshov, S. V.
Kuznetsov, V.
Livingston, K.
Lu, H. Y.
Martinez, D.
Mayer, M.
McAndrew, J.
McCracken, M. E.
McKinnon, B.
Meyer, C. A.
Mirazita, M.
Mokeev, V.
Moreno, B.
Moriya, K.
Morrison, B.
Moutarde, H.
Munevar, E.
Nadel-Turonski, P.
Nasseripour, R.
Niccolai, S.
Niculescu, I.
Ostrovidov, A. I.
Paremuzyan, R.
Park, K.
Park, S.
Pasyuk, E.
Pereira, S. Anefalos
Pisano, S.
PogoreIko, O.
Pozdniakov, S.
Price, J. W.
Procureur, S.
Prok, Y.
Protopopescu, D.
Raue, B. A.
Rosner, G.
Rossi, P.
Sabatie, F.
Saini, M. S.
Salamanca, J.
Salgado, C.
Saracco, P.
Schumacher, R. A.
Seraydaryan, H.
Sharabian, Y. G.
Smith, E. S.
Sober, D.
Sokhan, D.
Stepanyan, S. S.
Stepanyan, S.
Stoler, P.
Strauch, S.
Tedeschi, D. J.
Tkachenko, S.
Ungaro, M.
Vernarsky, B.
Vineyard, M. F.
Voutier, E.
Watts, D. P.
Weygand, D. P.
Wood, M. H.
Yegneswaran, A.
Zhang, J.
Zhao, B.
TI Measurement of the nucleon structure function F-2 in the nuclear medium
and evaluation of its moments
SO NUCLEAR PHYSICS A
LA English
DT Article
DE Moments; Nuclear modifications; Nucleon structure; Higher twists; QCD;
OPE
ID INELASTIC STRUCTURE FUNCTIONS; STRUCTURE-FUNCTION RATIOS; INCLUSIVE
ELECTRON-SCATTERING; RADIATIVE-CORRECTIONS; PRECISION-MEASUREMENT;
CROSS-SECTIONS; NNLO EVOLUTION; LEADING TWIST; HIGH Q2; CARBON
AB We report on the measurement of inclusive electron scattering off a carbon target performed with CLAS at Jefferson Laboratory. A combination of three different beam energies 1.161, 2.261 and 4.461 GeV allowed us to reach an invariant mass of the final-state hadronic system W approximate to 2.4 GeV with four-momentum transfers Q(2) ranging from 0.2 to 5 (GeV/c)(2). These data, together with previous measurements of the inclusive electron scattering off proton and deuteron, which cover a similar continuous two-dimensional region of Q(2) and Bjorken variable x, permit the study of nuclear modifications of the nucleon structure. By using these, as well as other world data, we evaluated the F-2 structure function and its moments. Using an OPE-based twist expansion, we studied the Q(2)-evolution of the moments, obtaining a separation of the leading-twist and the total higher-twist terms. The carbon-to-deuteron ratio of the leading-twist contributions to the F-2 moments exhibits the well-known EMC effect, compatible with that discovered previously in x-space. The total higher-twist term in the carbon nucleus appears, although with large systematic uncertainties, to be smaller with respect to the deuteron case for n < 7, suggesting partial parton deconfinement in nuclear matter. We speculate that the spatial extension of the nucleon is changed when it is immersed in the nuclear medium. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Osipenko, M.; Ricco, G.; Ripani, M.; Taiuti, M.; Anghinolfi, M.; Battaglieri, M.; De Vita, R.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
[Dupre, R.; El Alaoui, A.; Hafidi, K.] Argonne Natl Lab, Argonne, IL 60441 USA.
[Collins, P.; Morrison, B.; Pasyuk, E.] Arizona State Univ, Tempe, AZ 85287 USA.
[Price, J. W.] Calif State Univ Dominguez Hills, Carson, CA 90747 USA.
[Wood, M. H.] Canisius Coll, Buffalo, NY 14208 USA.
[Dey, B.; Dickson, R.; McCracken, M. E.; Meyer, C. A.; Moriya, K.; Schumacher, R. A.; Vernarsky, B.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Klein, F. J.; Nadel-Turonski, P.; Sober, D.] Catholic Univ Amer, Washington, DC 20064 USA.
[Moreno, B.; Moutarde, H.; Procureur, S.; Sabatie, F.] CEA, Ctr Saclay, Irfu Serv Phys Nucl, F-91191 Gif Sur Yvette, France.
[Doughty, D.; Heddle, D.] Christopher Newport Univ, Newport News, VA 23606 USA.
[Gohn, W.; Joo, K.; Ungaro, M.; Zhao, B.] Univ Connecticut, Storrs, CT 06269 USA.
[Branford, D.; McAndrew, J.; Sokhan, D.] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
[Biselli, A. S.] Fairfield Univ, Fairfield, CT 06824 USA.
[Dhamija, S.; Gabrielyan, M. Y.; Raue, B. A.] Florida Int Univ, Miami, FL 33199 USA.
[Crede, V.; Eugenio, P.; Hanretty, C.; Ostrovidov, A. I.; Park, S.; Saini, M. S.] Florida State Univ, Tallahassee, FL 32306 USA.
[Briscoe, W. J.; Munevar, E.; Niculescu, I.] George Washington Univ, Washington, DC 20052 USA.
[Cole, P. L.; Forest, T. A.; Martinez, D.; Salamanca, J.] Idaho State Univ, Pocatello, ID 83209 USA.
[Avakian, H.; De Sanctis, E.; Pereira, S. Anefalos; Rossi, P.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[D'Angelo, A.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy.
[Fradi, A.; Jo, H. S.; Niccolai, S.; Pisano, S.] Inst Phys Nucl, F-91406 Orsay, France.
[Bedlinskiy, I.; Kuleshov, S. V.; PogoreIko, O.; Pozdniakov, S.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Giovanetti, K. L.; Niculescu, I.] James Madison Univ, Harrisonburg, VA 22807 USA.
[Kim, W.; Kuznetsov, V.; Park, K.; Stepanyan, S. S.] Kyungpook Natl Univ, Taegu 702701, South Korea.
[Voutier, E.] Univ Grenoble 1, CNRS, LPSC, INPG,IN2P3, Grenoble, France.
[Egiyan, H.; Holtrop, M.] Univ New Hampshire, Durham, NH 03824 USA.
[Khandaker, M.; Salgado, C.] Norfolk State Univ, Norfolk, VA 23504 USA.
[Daniel, A.; Hicks, K.; Keller, D.] Ohio Univ, Athens, OH 45701 USA.
[Adhikari, K. P.; Amaryan, M. J.; Careccia, S. L.; Forest, T. A.; Klein, A.; Kuhn, S. E.; Mayer, M.; Sabatie, F.; Seraydaryan, H.; Tkachenko, S.; Zhang, J.] Old Dominion Univ, Norfolk, VA 23529 USA.
[Biselli, A. S.; Khetarpal, P.; Stoler, P.] Rensselaer Polytech Inst, Troy, NY 12180 USA.
[Gilfoyle, G. P.; Vineyard, M. F.] Univ Richmond, Richmond, VA 23173 USA.
[D'Angelo, A.] Univ Roma Tor Vergata, I-00133 Rome, Italy.
[Simula, S.] Ist Nazl Fis Nucl, Sez ROMA 3, I-00146 Rome, Italy.
[Osipenko, M.; Isupov, E. L.; Mokeev, V.] Skobeltsyn Nucl Phys Inst, Moscow 119899, Russia.
[Djalali, C.; Gothe, R. W.; Ilieva, Y.; Lu, H. Y.; Nasseripour, R.; Park, K.; Strauch, S.; Tedeschi, D. J.] Univ S Carolina, Columbia, SC 29208 USA.
[Avakian, H.; Batourine, V.; Brooks, W. K.; Burkert, V. D.; Carman, D. S.; Cole, P. L.; Deur, A.; Doughty, D.; Guo, L.; Heddle, D.; Klein, F. J.; Kubarovsky, V.; Mokeev, V.; Raue, B. A.; Sharabian, Y. G.; Smith, E. S.; Stepanyan, S.; Weygand, D. P.; Yegneswaran, A.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
[Vineyard, M. F.] Union Coll, Schenectady, NY 12308 USA.
[Brooks, W. K.; Hakobyan, H.; Joo, K.; Kuleshov, S. V.] Univ Tecn Federico Santa Maria, Valparaiso, Chile.
[Fegan, S.; Hassall, N.; Ireland, D. G.; Livingston, K.; McKinnon, B.; Protopopescu, D.; Rosner, G.; Watts, D. P.] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland.
[Baghdasaryan, H.; Prok, Y.] Univ Virginia, Charlottesville, VA 22901 USA.
[Egiyan, H.; Griffioen, K. A.; Jawalkar, S. S.] Coll William & Mary, Williamsburg, VA 23187 USA.
[Dashyan, N.; Gevorgyan, N.; Hakobyan, H.; Paremuzyan, R.; Sharabian, Y. G.; Stepanyan, S.] Yerevan Phys Inst, Yerevan 375036, Armenia.
RP Osipenko, M (reprint author), Ist Nazl Fis Nucl, Sez Genova, Via Dodecaneso 33, I-16146 Genoa, Italy.
EM osipenko@ge.infn.it
RI Ireland, David/E-8618-2010; Lu, Haiyun/B-4083-2012; Protopopescu,
Dan/D-5645-2012; Isupov, Evgeny/J-2976-2012; Zhao, Bo/J-6819-2012;
Brooks, William/C-8636-2013; Kuleshov, Sergey/D-9940-2013; Schumacher,
Reinhard/K-6455-2013; D'Angelo, Annalisa/A-2439-2012; Meyer,
Curtis/L-3488-2014; El Alaoui, Ahmed/B-4638-2015; Sabatie,
Franck/K-9066-2015; Osipenko, Mikhail/N-8292-2015; Zhang,
Jixie/A-1461-2016; Saracco, Paolo/F-3466-2012;
OI Ireland, David/0000-0001-7713-7011; Zhao, Bo/0000-0003-3171-5335;
Brooks, William/0000-0001-6161-3570; Kuleshov,
Sergey/0000-0002-3065-326X; Schumacher, Reinhard/0000-0002-3860-1827;
D'Angelo, Annalisa/0000-0003-3050-4907; Meyer,
Curtis/0000-0001-7599-3973; Sabatie, Franck/0000-0001-7031-3975;
Osipenko, Mikhail/0000-0001-9618-3013; Saracco,
Paolo/0000-0002-3013-9404; Simula, Silvano/0000-0002-5533-6746
FU Istituto Nazionale di Fisica Nucleare; French Commissariat a l'Energie
Atomique; French Centre National de la Recherche Scientifique; U.S.
Department of Energy [DE-AC05-84ER40150]; National Science Foundation;
National Research Foundation of Korea
FX This work was supported by the Istituto Nazionale di Fisica Nucleare,
the French Commissariat a l'Energie Atomique, the French Centre National
de la Recherche Scientifique, the U.S. Department of Energy, the
National Science Foundation and the National Research Foundation of
Korea. The Southeastern Universities Research Association (SURA)
operated the Thomas Jefferson National Accelerator Facility for the
United States Department of Energy under contract DE-AC05-84ER40150.
NR 84
TC 1
Z9 1
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD NOV 15
PY 2010
VL 845
BP 1
EP 32
DI 10.1016/j.nuclphysa.2010.05.059
PG 32
WC Physics, Nuclear
SC Physics
GA 638NR
UT WOS:000280902100001
ER
PT J
AU Chen, SY
Walsh, A
Luo, Y
Yang, JH
Gong, XG
Wei, SH
AF Chen, Shiyou
Walsh, Aron
Luo, Ye
Yang, Ji-Hui
Gong, X. G.
Wei, Su-Huai
TI Wurtzite-derived polytypes of kesterite and stannite quaternary
chalcogenide semiconductors
SO PHYSICAL REVIEW B
LA English
DT Article
ID DIPOLAR TETRAHEDRAL STRUCTURES; FILM SOLAR-CELLS; NANOCRYSTALS;
CRYSTALS; ENERGY; DIFFRACTION; DERIVATIVES; STABILITY; ABSORBER; CU
AB The I(2)-II-IV-VI(4) quaternary chalcogenide semiconductors (e.g., Cu(2)ZnGeS(4), Cu(2)ZnSnS(4), Cu(2)ZnGeSe(4) Cu(2)CdSnSe(4), and Ag(2)CdGeSe(4)) have been studied for more than 40 years but the nature of their crystal structures has proved contentious. Literature reports exist for the stannite and kesterite mineral structures, which are zinc-blende-derived structures, and wurtzite-stannite, which is a wurtzite-derived structure. In this paper, through a global search based on the valence octet rule (local charge neutrality), we report a wurtzite-derived structure corresponding to the kesterite structure, namely, wurtzite-kesterite (space group Pc), which is the ground state for some I(2)-II-IV-VI(4) compounds, but is easily confused with the wurtzite-stannite space group Pmn2(1)) structure. We show that there is a clear relationship between the properties of the wurtzite-kesterite and zinc-blende-derived kesterite structures, as well as between wurtzite-stannite and stannite. Contributions from the strain and Coulomb energies are found to play an important role in determining the structural stability. The underlying trends can be explained according to the size and ionicity of the group-I, -II, -IV, and -VI atoms. Electronic-structure calculations show that the wurtzite-derived structures have properties similar to the zinc-blende-derived structures, but their band gaps are relatively larger, which has also been observed for binary II-VI semiconductors.
C1 [Chen, Shiyou; Walsh, Aron; Luo, Ye; Yang, Ji-Hui; Gong, X. G.] Fudan Univ, Lab Computat Phys Sci, Shanghai 200433, Peoples R China.
[Chen, Shiyou; Walsh, Aron; Luo, Ye; Yang, Ji-Hui; Gong, X. G.] Fudan Univ, Surface Phys Lab, Shanghai 200433, Peoples R China.
[Chen, Shiyou] E China Normal Univ, Lab Polar Mat & Devices, Shanghai 200241, Peoples R China.
[Walsh, Aron] UCL, Dept Chem, London WC1E 6BT, England.
[Wei, Su-Huai] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Chen, SY (reprint author), Fudan Univ, Lab Computat Phys Sci, Shanghai 200433, Peoples R China.
RI Walsh, Aron/A-7843-2008; gong, xingao /B-1337-2010; gong,
xingao/D-6532-2011
OI Walsh, Aron/0000-0001-5460-7033;
FU Natural Sciences Foundation (NSF) of China [10934002, 1095011032,
60990312, 10950110324]; Research Program of Shanghai municipality;
Special Funds for Major State Basic Research; NSF of Shanghai
[10ZR1408800]; Fundamental Research Funds for the Central Universities;
U.S. Department of Energy [DE-AC36-08GO28308]; MOE
FX The work in Fudan is supported by the Natural Sciences Foundation (NSF)
of China (Grants No. 10934002 and No. 1095011032), the Research Program
of Shanghai municipality and MOE, the Special Funds for Major State
Basic Research. The work in ECNU is supported by NSF of Shanghai (Grant
No. 10ZR1408800) and NSF of China (Grant No. 60990312) and the
Fundamental Research Funds for the Central Universities. A.W. would like
to acknowledge funding from NSF of China (Grant No. 10950110324). The
work at NREL is funded by the U.S. Department of Energy under Contract
No. DE-AC36-08GO28308.
NR 47
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 15
PY 2010
VL 82
IS 19
AR 195203
DI 10.1103/PhysRevB.82.195203
PG 8
WC Physics, Condensed Matter
SC Physics
GA 680BD
UT WOS:000284205400003
ER
PT J
AU Okamoto, S
Senechal, D
Civelli, M
Tremblay, AMS
AF Okamoto, S.
Senechal, D.
Civelli, M.
Tremblay, A. -M. S.
TI Dynamical electronic nematicity from Mott physics
SO PHYSICAL REVIEW B
LA English
DT Article
ID HUBBARD-MODEL; TEMPERATURE; SUPERCONDUCTIVITY; DIMENSIONS; TRANSITION;
PLAQUETTE; SYSTEMS; PHASE
AB Very large anisotropies in transport quantities have been observed in the presence of very small in-plane structural anisotropy in many strongly correlated electron materials. By studying the two-dimensional Hubbard model with dynamical-mean-field theory for clusters, we show that such large anisotropies can be induced without static stripe order if the interaction is large enough to yield a Mott transition. Anisotropy decreases at large frequency. The maximum effect on conductivity anisotropy occurs in the underdoped regime, as observed in high-temperature superconductors.
C1 [Okamoto, S.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
[Senechal, D.; Tremblay, A. -M. S.] Univ Sherbrooke, Dept Phys, Sherbrooke, PQ J1K 2R1, Canada.
[Senechal, D.; Tremblay, A. -M. S.] Univ Sherbrooke, RQMP, Sherbrooke, PQ J1K 2R1, Canada.
[Civelli, M.] Inst Max Von Laue Paul Langevin, Theory Grp, F-38042 Grenoble, France.
[Tremblay, A. -M. S.] Canadian Inst Adv Res, Toronto, ON, Canada.
RP Okamoto, S (reprint author), Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
EM okapon@ornl.gov
RI Okamoto, Satoshi/G-5390-2011
OI Okamoto, Satoshi/0000-0002-0493-7568
FU Materials Sciences and Engineering Division, Office of Basic Energy
Sciences, U.S. Department of Energy; NSERC (Canada); Tier I Canada
Research Chair
FX We thank G. Sordi, J. Chang, and L. Taillefer for discussions. The work
of S.O. was supported by the Materials Sciences and Engineering
Division, Office of Basic Energy Sciences, U.S. Department of Energy.
This work was partially supported by NSERC (Canada) and by the Tier I
Canada Research Chair Program (A.-M.S.T.). Some of the computational
resources were provided by RQCHP and Compute Canada.
NR 39
TC 32
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U1 1
U2 10
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 15
PY 2010
VL 82
IS 18
AR 180511
DI 10.1103/PhysRevB.82.180511
PG 4
WC Physics, Condensed Matter
SC Physics
GA 680BB
UT WOS:000284205000002
ER
PT J
AU Singh, DJ
Seo, SSA
Lee, HN
AF Singh, David J.
Seo, Sung Seok A.
Lee, Ho Nyung
TI Optical properties of ferroelectric Bi4Ti3O12
SO PHYSICAL REVIEW B
LA English
DT Article
ID BISMUTH TITANATE; ELECTRONIC-STRUCTURE; SINGLE CRYSTALS;
LOW-TEMPERATURE; 1ST-PRINCIPLES; DIFFRACTION; REFINEMENT; BEHAVIOR;
FILMS
AB We report optical properties of ferroelectric Bi4Ti3O12 based on spectroscopic ellipsometry and calculations with the recently developed density functional of Tran and Blaha. We find a close accord between the experiment and the calculated results with this functional, including the energy onset of optical transitions and the scale of the optical conductivity. The band gap is indirect, with a value of 2.9 eV, and an onset of direct optical transitions at 3.1 eV.
C1 [Singh, David J.; Seo, Sung Seok A.; Lee, Ho Nyung] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RP Singh, DJ (reprint author), Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RI Singh, David/I-2416-2012; Seo, Sung Seok/B-6964-2008; Lee, Ho
Nyung/K-2820-2012
OI Seo, Sung Seok/0000-0002-7055-5314; Lee, Ho Nyung/0000-0002-2180-3975
FU Oak Ridge National Laboratory
FX We are grateful for helpful discussions with Sushil Auluck. This work
was supported by the Laboratory Directed Research and Development
Program of Oak Ridge National Laboratory, managed by UT-Batelle, LLC for
the U.S. Department of Energy.
NR 32
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 15
PY 2010
VL 82
IS 18
AR 180103
DI 10.1103/PhysRevB.82.180103
PG 4
WC Physics, Condensed Matter
SC Physics
GA 680BB
UT WOS:000284205000001
ER
PT J
AU Rudolph, D
Andersson, LL
Bengtsson, R
Ekman, J
Erten, O
Fahlander, C
Johansson, EK
Ragnarsson, I
Andreoiu, C
Bentley, MA
Carpenter, MP
Charity, RJ
Clark, RM
Fallon, P
Macchiavelli, AO
Reviol, W
Sarantites, DG
Seweryniak, D
Svensson, CE
Williams, SJ
AF Rudolph, D.
Andersson, L. -L.
Bengtsson, R.
Ekman, J.
Erten, O.
Fahlander, C.
Johansson, E. K.
Ragnarsson, I.
Andreoiu, C.
Bentley, M. A.
Carpenter, M. P.
Charity, R. J.
Clark, R. M.
Fallon, P.
Macchiavelli, A. O.
Reviol, W.
Sarantites, D. G.
Seweryniak, D.
Svensson, C. E.
Williams, S. J.
TI Isospin and deformation studies in the odd-odd N = Z nucleus Co-54
SO PHYSICAL REVIEW C
LA English
DT Article
ID SHELL-MODEL DESCRIPTION; HIGH-SPIN STATES; ROTATIONAL BANDS;
CHANNEL-SELECTION; NI-56; DECAY; SPECTROSCOPY; GAMMASPHERE
AB High-spin states in the odd-odd N = Z nucleus Co-54 have been investigated by the fusion-evaporation reaction Si-28(S-32,1 alpha 1p1n)Co-54. Gamma-ray information gathered with the Ge detector array Gammasphere was correlated with evaporated particles detected in the charged particle detector system Microball and a 1 pi neutron detector array. A significantly extended excitation scheme of Co-54 is presented, which includes a candidate for the isospin T = 1, 6(+) state of the 1f(7/2)(-2) multiplet. The results are compared to large-scale shell-model calculations in the fp shell. Effective interactions with and without isospin-breaking terms have been used to probe isospin symmetry and isospin mixing. A quest for deformed high-spin rotational cascades proved negative. This feature is discussed by means of cranking calculations.
C1 [Rudolph, D.; Andersson, L. -L.; Ekman, J.; Erten, O.; Fahlander, C.; Johansson, E. K.; Andreoiu, C.] Lund Univ, Dept Phys, S-22100 Lund, Sweden.
[Bengtsson, R.; Ragnarsson, I.] Lund Univ, LTH, Dept Math Phys, S-22100 Lund, Sweden.
[Bentley, M. A.; Williams, S. J.] Univ Keele, Sch Chem & Phys, Keele ST5 5BG, Staffs, England.
[Carpenter, M. P.; Seweryniak, D.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Charity, R. J.; Reviol, W.; Sarantites, D. G.] Washington Univ, Dept Chem, St Louis, MO 63130 USA.
[Clark, R. M.; Fallon, P.; Macchiavelli, A. O.; Svensson, C. E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Rudolph, D (reprint author), Lund Univ, Dept Phys, S-22100 Lund, Sweden.
RI Rudolph, Dirk/D-4259-2009; Ekman, Jorgen/C-1385-2013; Carpenter,
Michael/E-4287-2015
OI Rudolph, Dirk/0000-0003-1199-3055; Carpenter,
Michael/0000-0002-3237-5734
FU Swedish Research Council; US Department of Energy [DE-AC03-76SF00098,
DE-FG02-88ER-40406, DE-AC02-06CH11357]
FX We thank the accelerator crews and the Gammasphere support staff at
Argonne and Berkeley for their supreme efforts. The target maker, Jette
Agnete Sorensen, at the Niels Bohr Institute, Copenhagen, Denmark, is
also warmly thanked. This work is supported in part by the Swedish
Research Council and the US Department of Energy under Grants No.
DE-AC03-76SF00098 (Lawrence Berkeley National Laboratory),
DE-FG02-88ER-40406 (WU), and DE-AC02-06CH11357 (Argonne National
Laboratory).
NR 60
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U1 0
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PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD NOV 15
PY 2010
VL 82
IS 5
AR 054309
DI 10.1103/PhysRevC.82.054309
PG 14
WC Physics, Nuclear
SC Physics
GA 680BI
UT WOS:000284205900002
ER
PT J
AU Kilcoyne, ALD
Aguilar, A
Muller, A
Schippers, S
Cisneros, C
Alna'Washi, G
Aryal, NB
Baral, KK
Esteves, DA
Thomas, CM
Phaneuf, RA
AF Kilcoyne, A. L. D.
Aguilar, A.
Mueller, A.
Schippers, S.
Cisneros, C.
Alna'Washi, G.
Aryal, N. B.
Baral, K. K.
Esteves, D. A.
Thomas, C. M.
Phaneuf, R. A.
TI Confinement Resonances in Photoionization of Xe@C-60(+)
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID 4D THRESHOLD; ATOMS; C-60; BUCKMINSTERFULLERENE; DISTORTION; COMPLEXES;
XENON; BA
AB Experimental evidence is presented for confinement resonances associated with photoabsorption by a Xe atom in a C-60 cage. The giant 4d resonance in photoionization of Xe is predicted to be redistributed into four components due to multipath interference of photoelectron waves reflected by the cage. The measurements were made in the photon energy range 60-150 eV by merging a beam of synchrotron radiation with a mass/charge selected Xe@C-60(+) ion beam. The phenomenon was observed in the Xe@C-583(+) product ion channel.
C1 [Kilcoyne, A. L. D.; Aguilar, A.] LBNL, Adv Light Source, Berkeley, CA 94720 USA.
[Mueller, A.; Schippers, S.] Univ Giessen, IAMP, D-35392 Giessen, Germany.
[Cisneros, C.] UNAM, Inst Ciencias Fis, Cuernavaca 62251, Morelos, Mexico.
[Alna'Washi, G.] Hashemite Univ, Zarqa 13115, Jordan.
[Aryal, N. B.; Baral, K. K.; Esteves, D. A.; Thomas, C. M.; Phaneuf, R. A.] Univ Nevada, Dept Phys, Reno, NV 89557 USA.
RP Kilcoyne, ALD (reprint author), LBNL, Adv Light Source, MS 7-100, Berkeley, CA 94720 USA.
RI Muller, Alfred/A-3548-2009; Kilcoyne, David/I-1465-2013; Schippers,
Stefan/A-7786-2008
OI Muller, Alfred/0000-0002-0030-6929; Schippers,
Stefan/0000-0002-6166-7138
FU Office of Basic Energy Sciences, U.S. Department of Energy
[DE-AC03-76SF0098, DE-FG02-03ER15424]; Deutsche Forschungsgemeinschaft
[Mu 1068/10]; CONACYT, Mexico [82521]
FX This research was funded by the Office of Basic Energy Sciences, U.S.
Department of Energy under Contract No. DE-AC03-76SF0098 and Grant No.
DE-FG02-03ER15424, by the Deutsche Forschungsgemeinschaft under project
Mu 1068/10, and by CONACYT-82521, Mexico.
NR 23
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U1 0
U2 5
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 15
PY 2010
VL 105
IS 21
AR 213001
DI 10.1103/PhysRevLett.105.213001
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 680CD
UT WOS:000284208800004
PM 21231297
ER
PT J
AU Moreno, GA
Messina, R
Dalvit, DAR
Lambrecht, A
Neto, PAM
Reynaud, S
AF Moreno, G. A.
Messina, R.
Dalvit, D. A. R.
Lambrecht, A.
Maia Neto, P. A.
Reynaud, S.
TI Disorder in Quantum Vacuum: Casimir-Induced Localization of Matter Waves
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID ANDERSON LOCALIZATION
AB Disordered geometrical boundaries such as rough surfaces induce important modifications to the mode spectrum of the electromagnetic quantum vacuum. In analogy to Anderson localization of waves induced by a random potential, here we show that the Casimir-Polder interaction between a cold atomic sample and a rough surface also produces localization phenomena. These effects, that represent a macroscopic manifestation of disorder in quantum vacuum, should be observable with Bose-Einstein condensates expanding in proximity of rough surfaces.
C1 [Moreno, G. A.] UBA, IFIBA Dept Fis FCEyN, RA-1428 Buenos Aires, DF, Argentina.
[Moreno, G. A.; Dalvit, D. A. R.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Messina, R.; Lambrecht, A.; Reynaud, S.] UPMC, ENS, CNRS, Lab Kastler Brossel, F-75252 Paris 05, France.
[Messina, R.] SYRTE Observ Paris, F-75014 Paris, France.
[Maia Neto, P. A.] UFRJ, Inst Fis, BR-21941972 Rio De Janeiro, Brazil.
RP Moreno, GA (reprint author), UBA, IFIBA Dept Fis FCEyN, Ciudad Univ, RA-1428 Buenos Aires, DF, Argentina.
RI Messina, Riccardo/F-4750-2012; Fluidos Complexos, INCT/H-9172-2013;
Reynaud, Serge/J-8061-2014; Lambrecht, Astrid/K-1208-2014
OI Reynaud, Serge/0000-0002-1494-696X; Lambrecht,
Astrid/0000-0002-5193-1222
FU CONICET; UBA; ANPCyT; Los Alamos LDRD; CAPES-COFECUB; ESF; CNPq;
FAPERJ-CNE
FX G. A. M. thanks E. Calzetta and J. J. Zarate for helpful discussions.
This work was partially supported by CONICET, UBA, ANPCyT, Los Alamos
LDRD program, CAPES-COFECUB, ESF Research Networking Program CASIMIR
(www.casimir-network.com), CNPq, and FAPERJ-CNE.
NR 20
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U1 0
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 15
PY 2010
VL 105
IS 21
AR 210401
DI 10.1103/PhysRevLett.105.210401
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 680CD
UT WOS:000284208800001
PM 21231273
ER
PT J
AU Wang, J
Xu, XG
Spurr, R
Wang, YX
Drury, E
AF Wang, Jun
Xu, Xiaoguang
Spurr, Robert
Wang, Yuxuang
Drury, Easan
TI Improved algorithm for MODIS satellite retrievals of aerosol optical
thickness over land in dusty atmosphere: Implications for air quality
monitoring in China
SO REMOTE SENSING OF ENVIRONMENT
LA English
DT Article
DE Remote sensing of aerosols; Particulate matter air quality; Atmospheric
correction in dusty condition; Air quality in China
ID DEPTH; RADIANCES; TRANSPORT; MODEL
AB A new algorithm, using the Moderate Resolution Imaging Spectroradiometer (MODIS) satellite reflectance and aerosol single scattering properties simulated from a chemistry transport model (GEOS-Chem), is developed to retrieve aerosol optical thickness (AOT) over land in China during the spring dust season. The algorithm first uses a "dynamic lower envelope" approach to sample the MODIS dark-pixel reflectance data in low AOT conditions, to derive the local surface visible (0.65 mu m)/near infrared (NIR, 2.1 mu m) reflectance ratio. Joint retrievals of AOT at 0.65 mu m and surface reflectance at 2.1 mu m are then performed, based on the time, location, and spectral-dependent single scattering properties of the dusty atmosphere as simulated by the GEOS-Chem. A linearized vector radiative transfer model (VLIDORT) that simultaneously computes the top-of-atmosphere reflectance and its Jacobian with respect to AOT, is used in the forward component of the inversion of MODIS reflectance to AOT. Comparison of retrieved AOT results in April and May of 2008 with AERONET observations shows a strong correlation (R = 0.83), with small bias (0.01), and small RMSE (0.17); the figures are a substantial improvement over corresponding values obtained with the MODIS Collection 5 AOT algorithm for the same study region and time period. The small bias is partially due to the consideration of dust effect at 2.1 mu m channel, without which the bias is -0.05. The surface PM10 (particulate matter with diameter less than 10 mu m) concentrations derived using this improved AOT retrieval show better agreement with ground observations than those derived from GEOS-Chem simulations alone, or those inferred from the MODIS Collection 5 AOT. This study underscores the value of using satellite reflectance to improve the air quality modeling and monitoring. (C) 2010 Elsevier Inc. All rights reserved.
C1 [Wang, Jun; Xu, Xiaoguang] Univ Nebraska Lincoln, Dept Earth & Atmospher Sci, Lincoln, NE 68588 USA.
[Wang, Jun] NASA Goddard Space Flight, Climate & Radiat Branch, Greenbelt, MD USA.
[Spurr, Robert] RT Solut Inc, Cambridge, MA USA.
[Wang, Yuxuang] Tsinghua Univ, Dept Environm Sci & Engn, Beijing 100084, Peoples R China.
[Drury, Easan] Natl Renewable Energy Lab, Strateg Energy Anal Ctr, Golden, CO USA.
RP Wang, J (reprint author), Univ Nebraska Lincoln, Dept Earth & Atmospher Sci, 303 Bessey Hall, Lincoln, NE 68588 USA.
EM jwang7@unl.edu
RI Chem, GEOS/C-5595-2014; Wang, Yuxuan/C-6902-2014; Xu,
Xiaoguang/B-8203-2016; Wang, Jun/A-2977-2008
OI Wang, Yuxuan/0000-0002-1649-6974; Xu, Xiaoguang/0000-0001-9583-980X;
Wang, Jun/0000-0002-7334-0490
FU NASA
FX This research is supported by the NASA Earth Sciences New Investigator
Program and Radiation Science Program. We thank the data services
provided by the Goddard Earth Science Data Center and the AERONET team
in NASA GSFC., and the computational support provided by the Holland
Computing Center of the University of Nebraska. J. Wang is grateful to
Ralph Kahn for his constructive comments on the early version of this
manuscript.
NR 34
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PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0034-4257
EI 1879-0704
J9 REMOTE SENS ENVIRON
JI Remote Sens. Environ.
PD NOV 15
PY 2010
VL 114
IS 11
BP 2575
EP 2583
DI 10.1016/j.rse.2010.05.034
PG 9
WC Environmental Sciences; Remote Sensing; Imaging Science & Photographic
Technology
SC Environmental Sciences & Ecology; Remote Sensing; Imaging Science &
Photographic Technology
GA 655IE
UT WOS:000282242000016
ER
PT J
AU Wang, YJ
Lyapustin, AI
Privette, JL
Cook, RB
SanthanaVannan, SK
Vermote, EF
Schaaf, CL
AF Wang, Yujie
Lyapustin, Alexei I.
Privette, Jeffrey L.
Cook, Robert B.
SanthanaVannan, Suresh K.
Vermote, Eric F.
Schaaf, Crystal L.
TI Assessment of biases in MODIS surface reflectance due to Lambertian
approximation
SO REMOTE SENSING OF ENVIRONMENT
LA English
DT Article
DE Surface reflectance; Surface albedo; MODIS; Atmospheric correction;
AERONET; Aeronet based surface reflectance validation network (ASRVN);
Aerosol; Ross-thick-li-sparse BRDF model
ID ALBEDO; LAND; BRDF; RADIOMETER; RETRIEVAL; PRODUCTS; AERONET; SPACE
AB Using MODIS data and the AERONET-based Surface Reflectance Validation Network (ASRVN), this work studies errors of MODIS atmospheric correction caused by the Lambertian approximation. On one hand, this approximation greatly simplifies the radiative transfer model, reduces the size of the look-up tables, and makes operational algorithm faster. On the other hand, uncompensated atmospheric scattering caused by Lambertian model systematically biases the results. For example, for a typical bowl-shaped bidirectional reflectance distribution function (BRDF), the derived reflectance is underestimated at high solar or view zenith angles, where BRDF is high, and is overestimated at low zenith angles where BRDF is low. The magnitude of biases grows with the amount of scattering in the atmosphere, i.e., at shorter wavelengths and at higher aerosol concentration. The slope of regression of lambertian surface reflectance vs. ASRVN bidirectional reflectance factor (BRF) is about 0.85 in the red and 0.6 in the green bands. This error propagates into the MODIS BRDF/albedo algorithm, slightly reducing the magnitude of overall reflectance and anisotropy of BRDF. This results in a small negative bias of spectral surface albedo. An assessment for the GSFC (Greenbelt, USA) validation site shows the albedo reduction by 0.004 in the near infrared, 0.005 in the red, and 0.008 in the green MODIS bands. (C) 2010 Elsevier Inc. All rights reserved.
C1 [Wang, Yujie] Univ Maryland, Goddard Earth Sci & Technol Ctr, Goddard Space Flight Ctr, NASA, Greenbelt, MD 20771 USA.
[Wang, Yujie; Lyapustin, Alexei I.] Univ Maryland Baltimore Cty, GEST Ctr, Catonsville, MD 21228 USA.
[Privette, Jeffrey L.] NOAA, Satellite & Informat Serv, NCDC, Asheville, NC 28801 USA.
[Cook, Robert B.; SanthanaVannan, Suresh K.] Oak Ridge Natl Lab DAAC, Oak Ridge, TN 37830 USA.
[Vermote, Eric F.] Univ Maryland, Dept Geog, College Pk, MD 20742 USA.
[Schaaf, Crystal L.] Boston Univ, Dept Geog, Boston, MA 02215 USA.
RP Wang, YJ (reprint author), Univ Maryland, Goddard Earth Sci & Technol Ctr, Goddard Space Flight Ctr, NASA, Code 614-4, Greenbelt, MD 20771 USA.
EM yujie.wang@nasa.gov
RI Privette, Jeffrey/G-7807-2011; Vermote, Eric/K-3733-2012; Lyapustin,
Alexei/H-9924-2014;
OI Privette, Jeffrey/0000-0001-8267-9894; Lyapustin,
Alexei/0000-0003-1105-5739; Cook, Robert/0000-0001-7393-7302
FU NASA [NNX08AE94A]
FX The research of A. Lyapustin and Y. Wang was funded by the NASA
Terrestrial Ecology Program (Dr. Wickland). C. Schaaf was funded by the
NASA grant NNX08AE94A.
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PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0034-4257
EI 1879-0704
J9 REMOTE SENS ENVIRON
JI Remote Sens. Environ.
PD NOV 15
PY 2010
VL 114
IS 11
BP 2791
EP 2801
DI 10.1016/j.rse.2010.06.013
PG 11
WC Environmental Sciences; Remote Sensing; Imaging Science & Photographic
Technology
SC Environmental Sciences & Ecology; Remote Sensing; Imaging Science &
Photographic Technology
GA 655IE
UT WOS:000282242000033
ER
PT J
AU Valek, P
Brandt, PC
Buzulukova, N
Fok, MC
Goldstein, J
McComas, DJ
Perez, JD
Roelof, E
Skoug, R
AF Valek, P.
Brandt, P. C.
Buzulukova, N.
Fok, M-C.
Goldstein, J.
McComas, D. J.
Perez, J. D.
Roelof, E.
Skoug, R.
TI Evolution of low-altitude and ring current ENA emissions from a moderate
magnetospheric storm: Continuous and simultaneous TWINS observations
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID ADVANCED COMPOSITION EXPLORER; CARBON FOILS; NEUTRAL ATOMS; IMAGE
MISSION; IONS; SUBSTORM; TIME
AB The moderate storm of 22 July 2009 is the largest measured during the extended solar minimum between December 2006 and March 2010. We present observations of this storm made by the two wide-angle imaging neutral-atom spectrometers (TWINS) mission. The TWINS mission measures energetic neutral atoms (ENAs) using sensors mounted on two separate spacecrafts. Because the two spacecrafts' orbital planes are significantly offset, the pair provides a nearly optimal combination of continuous magnetospheric observations from at least one of the TWINS platforms with several hours of simultaneous, dual-platform viewing over each orbit. The ENA imaging study presented in this paper is the first reported magnetospheric storm for which both continuous coverage and stereoscopic imaging were available. Two populations of ENAs are observed during this storm. The first are emissions from the ring current and come from a parent population of trapped ions in the inner magnetosphere. The second, low-altitude emissions (LAEs), are the result of precipitating ions which undergo multiple charge exchange and stripping collisions with the oxygen exosphere. The temporal evolution of this storm shows that the LAEs begin earlier and are the brightest emissions seen during the main phase, while later, during the recovery, the LAE is only as bright as the bulk ring current emissions.
C1 [Valek, P.; Goldstein, J.; McComas, D. J.] SW Res Inst, San Antonio, TX 78228 USA.
[Brandt, P. C.; Roelof, E.] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA.
[Buzulukova, N.; Fok, M-C.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Perez, J. D.] Auburn Univ, Dept Phys, Auburn, AL 36849 USA.
[Skoug, R.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Valek, P.; Goldstein, J.; McComas, D. J.] Univ Texas San Antonio, Dept Phys, San Antonio, TX USA.
RP Valek, P (reprint author), SW Res Inst, San Antonio, TX 78228 USA.
RI Fok, Mei-Ching/D-1626-2012; Brandt, Pontus/N-1218-2016;
OI Brandt, Pontus/0000-0002-4644-0306; Valek, Philip/0000-0002-2318-8750
FU TWINS mission; NASA Goddard Space Flight Center
FX This work was supported by the TWINS mission, which is a part of NASA's
Explorer program. For N. Buzulukova, this research was supported by an
appointment at the NASA Goddard Space Flight Center, administered by
CRESST/UMD through a contract with NASA. Real Time Dst and AE indices
are from supplied by World Data Center for Geomagnetism, Kyoto. We thank
the geomagnetic observatories (Kakioka [JMA], Honolulu and San Juan
[USGS], Hermanus [RSA], Alibag [IIG]), NiCT, INTERMAGNET, and many
others for their cooperation to make the real-time (quicklook) Dst index
available.
NR 39
TC 25
Z9 25
U1 1
U2 3
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0148-0227
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD NOV 13
PY 2010
VL 115
AR A11209
DI 10.1029/2010JA015429
PG 8
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 680II
UT WOS:000284225200002
ER
PT J
AU Wu, P
Liu, KJ
Winske, D
Gary, SP
Schwadron, NA
Funsten, HO
AF Wu, Pin
Liu, Kaijun
Winske, Dan
Gary, S. Peter
Schwadron, Nathan A.
Funsten, Herbert O.
TI Hybrid simulations of the termination shock: Suprathermal ion velocity
distributions in the heliosheath
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID INTERSTELLAR BOUNDARY EXPLORER; QUASI-PERPENDICULAR SHOCKS;
SUPERCRITICAL COLLISIONLESS SHOCKS; SOLAR-WIND; MAGNETIC-FIELDS; OUTER
HELIOSPHERE; PICKUP PROTONS; BOW SHOCK; ENA FLUX; ACCELERATION
AB The Los Alamos hybrid simulation code is used to examine kinetic properties of pickup ions at the heliospheric termination shock and in the downstream heliosheath. All simulations are one-dimensional in spatial variations, represent the electrons as a zero-mass fluid, and address only perpendicular shocks. Interpretation of measurements from the IBEX and Voyager spacecraft depend sensitively on the properties of the suprathermal ions downstream of the termination shock, so this research addresses three topics concerning such ions. First, a careful examination of pickup ion trajectories shows that their initial acceleration does not require specular reflection at the shock, as is sometimes assumed, but is the consequence of gyromotion by selected ions at the shock. The primary factor in this energy gain is a gyro-phase-dependent interaction with the motional electric field upstream of, and the magnetic field at, the shock. Second, shock simulations are carried out in which the upstream pickup ions are assumed to have four different types of velocity distributions. The downstream ion perpendicular velocity distributions f(nu(perpendicular to)) are similar in each of the runs and may be approximately characterized as a thermal Maxwellian and a suprathermal distribution. The only significant difference among the four downstream distributions is in the tails of the suprathermal component. Third, simulations are carried out for three different upstream Mach numbers; the results show that faster solar wind flows lead to increased fluxes of ions in the tails of the suprathermal component and are generally consistent with energetic neutral atom observations by the IBEX spacecraft.
C1 [Liu, Kaijun; Winske, Dan; Gary, S. Peter; Funsten, Herbert O.] Los Alamos Natl Lab, Int Space & Response Div, Grp ISR 1, Los Alamos, NM 87545 USA.
[Wu, Pin; Schwadron, Nathan A.] Boston Univ, Dept Astron, Boston, MA 02215 USA.
RP Wu, P (reprint author), Univ Delaware, Dept Phys & Astron, Sharp Lab 217, Newark, DE 19716 USA.
EM pgary@lanl.gov
RI Dong, Li/F-4931-2010; Funsten, Herbert/A-5702-2015
OI Funsten, Herbert/0000-0002-6817-1039
FU U.S. Department of Energy; National Aeronautics and Space
Administration; IBEX program; NASA [NNX07AC15G]
FX The research described here is based on the Ph.D. thesis of Dr. Pin Wu,
"Ion Kinetics at the Heliospheric Termination Shock," Boston University,
2009. PW thanks Len Burlaga and Joe Giacalone for sharing their
insights, Michael E. Shay and William H. Matthaeus for their
discussions, encouragement, and support, and the members of her thesis
committee for their guidance. The authors thank Sandra Chapman, Harald
Kucharek, and Gary Zank for many insightful and stimulating
conversations concerning termination shocks and the outer heliosphere.
The portion of this work performed at Los Alamos National Laboratory was
carried out under the auspices of the U.S. Department of Energy and was
supported in part by the Solar and Heliospheric Physics SR&T and IBEX
Programs of the National Aeronautics and Space Administration. NAS was
supported by the IBEX program and the NASA LWS EMMREM project (grant
NNX07AC15G).
NR 58
TC 15
Z9 15
U1 0
U2 2
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD NOV 13
PY 2010
VL 115
AR A11105
DI 10.1029/2010JA015384
PG 13
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 680II
UT WOS:000284225200001
ER
PT J
AU Shin, TJ
Lee, B
Seong, BS
Han, YS
Lee, CH
Song, HH
Stein, RS
Ree, M
AF Shin, Tae Joo
Lee, Byeongdu
Seong, Baik Shuk
Han, Young Soo
Lee, Chang-Hee
Song, Hyun Hoon
Stein, Richard S.
Ree, Moonhor
TI Composition-dependent phase segregation and cocrystallization behaviors
of blends of metallocene-catalyzed octene-LLDPE(D) and LDPE(H)
SO POLYMER
LA English
DT Article
DE Small angle neutron scattenng (SANS); Small angle X ray scattenng
(SAXS); O mLLDPE/LDPE blend
ID X-RAY-SCATTERING; SMALL-ANGLE NEUTRON; LOW-DENSITY POLYETHYLENE;
ORGANOSILICATE DIELECTRIC FILMS; CHAIN-BRANCHED POLYETHYLENES; I-MOTIF
DNA; THIN-FILMS; RHEOLOGICAL PROPERTIES; CRYSTALLIZATION BEHAVIOR;
MECHANICAL-PROPERTIES
AB The morphological structures of slowly cooled blends of deuterated metallocene-catalyzed octene linear low-density polyethylene (O-mLLDPE(D)) and hydrogenous low-density polyethylene (LDPE(H)) were studied by using small angle neutron scattering in combination with complementary small angle X-ray scattering and differential scanning calorimetry The phase segregation which is more nanoscale than macroscale and cocrystallization behaviors were found to vary with the blend composition Phase-segregated O-mLLDPE(D) lamellae are predominantly formed in LDPE(H)-rich compositions In contrast few segregated O-mLLDPE(D) lamellae form in O-mLLDPE(D)-rich compositions and instead O-mLLDPE(D) lamellar stacks are extensively cocrystallized with LDPE(H) mostly in the interlamellar amorphous region (C) 2010 Elsevier Ltd All rights reserved
C1 [Shin, Tae Joo; Ree, Moonhor] Pohang Univ Sci & Technol, Pohang Accelerator Lab, Ctr Electro Photo Behav Adv Mol Syst, Dept Chem,Polymer Res Inst, Pohang 790784, South Korea.
[Shin, Tae Joo; Ree, Moonhor] Pohang Univ Sci & Technol, Sch Mol Sci BK, Pohang 790784, South Korea.
[Lee, Byeongdu] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Seong, Baik Shuk; Han, Young Soo; Lee, Chang-Hee] HANARO Ctr, Korea Atom Energy Res Inst, Taejon 305600, South Korea.
[Song, Hyun Hoon] Hannam Univ, Dept Adv Mat, Taejon 305811, South Korea.
[Stein, Richard S.] Univ Massachusetts, Polymer Res Inst, Amherst, MA 01003 USA.
[Stein, Richard S.] Univ Massachusetts, Dept Polymer Sci & Engn, Amherst, MA 01003 USA.
RP Ree, M (reprint author), Pohang Univ Sci & Technol, Pohang Accelerator Lab, Ctr Electro Photo Behav Adv Mol Syst, Dept Chem,Polymer Res Inst, Pohang 790784, South Korea.
RI Ree, Moonhor/F-5347-2013; Shin, Tae Joo/R-7434-2016;
OI Shin, Tae Joo/0000-0002-1438-3298; Lee, Byeongdu/0000-0003-2514-8805
FU Ministry of Education Science & Technology (MEST) [20090060053];
National Research Foundation (NRF) of Korea (Center for Electro-Photo
Behaviors in Advanced Molecular Systems); MEST POSCO; POSTECH
Foundation; US DOE-BES [DE-AC02-06CH11357]
FX This study was supported by the Ministry of Education Science &
Technology (MEST) (Basic Research Grant of Nuclear Energy Grant
20090060053 KISTEP World Class University Program and BK21 Program) and
by the National Research Foundation (NRF) of Korea (Center for
Electro-Photo Behaviors in Advanced Molecular Systems) The synchrotron
X-ray scattering measurements at Pohang Light Source were supported by
MEST POSCO and POSTECH Foundation This work was also benefited from the
Argonne National Laboratory funded by the US DOE-BES under Contract No
DE-AC02-06CH11357
NR 54
TC 11
Z9 11
U1 1
U2 14
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0032-3861
J9 POLYMER
JI Polymer
PD NOV 12
PY 2010
VL 51
IS 24
BP 5799
EP 5806
DI 10.1016/j.polymer.2010.09.075
PG 8
WC Polymer Science
SC Polymer Science
GA 680PY
UT WOS:000284248100019
ER
PT J
AU Zhou, H
Zhou, SX
Walian, PJ
Jap, BK
AF Zhou, Hua
Zhou, Shuxia
Walian, Peter J.
Jap, Bing K.
TI Dependency of gamma-secretase complex activity on the structural
integrity of the bilayer
SO BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
LA English
DT Article
DE Membrane protein; Aspartyl protease; Alzheimer's disease
ID LIPID RAFTS; INTRACELLULAR DOMAIN; INTRAMEMBRANE PROTEOLYSIS;
SIGNAL-TRANSDUCTION; HUMAN BRAIN; BETA-APP; IN-VIVO; PRESENILIN;
CLEAVAGE; RECONSTITUTION
AB gamma-secretase is a membrane protein complex associated with the production of All peptides that are pathogenic in Alzheimer's disease. We have characterized the activity of gamma-secretase complexes under a variety of detergent solubilization and reconstitution conditions, and the structural state of proteoliposomes by electron microscopy. We found that gamma-secretase activity is highly dependent on the physical state or integrity of the membrane bilayer - partial solubilization may increase activity while complete solubilization will abolish it. The activity of well-solubilized gamma-secretase can be restored to near native levels when properly reconstituted into a lipid bilayer environment. (C) 2010 Elsevier Inc. All rights reserved.
C1 [Zhou, Hua; Zhou, Shuxia; Walian, Peter J.; Jap, Bing K.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Zhou, H (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Life Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM hzhou2@lbl.gov
FU National Institutes of Health; Office of Science, Office of Basic Energy
Sciences, of the US Department of Energy [DE-AC02-05CH11231]
FX This work was supported by funding from the National Institutes of
Health (BK. Jap) and by the Director, Office of Science, Office of Basic
Energy Sciences, of the US Department of Energy under Contract No.
DE-AC02-05CH11231.
NR 39
TC 3
Z9 4
U1 0
U2 2
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0006-291X
J9 BIOCHEM BIOPH RES CO
JI Biochem. Biophys. Res. Commun.
PD NOV 12
PY 2010
VL 402
IS 2
BP 291
EP 296
DI 10.1016/j.bbrc.2010.10.017
PG 6
WC Biochemistry & Molecular Biology; Biophysics
SC Biochemistry & Molecular Biology; Biophysics
GA 688PA
UT WOS:000284862300022
PM 20937251
ER
PT J
AU Jamros, MA
Oliveira, LC
Whitford, PC
Onuchic, JN
Adams, JA
Blumenthal, DK
Jennings, PA
AF Jamros, Michael A.
Oliveira, Leandro C.
Whitford, Paul C.
Onuchic, Jose N.
Adams, Joseph A.
Blumenthal, Donald K.
Jennings, Patricia A.
TI Proteins at Work A COMBINED SMALL ANGLE X-RAY SCATTERING AND THEORETICAL
DETERMINATION OF THE MULTIPLE STRUCTURES INVOLVED ON THE PROTEIN KINASE
FUNCTIONAL LANDSCAPE
SO JOURNAL OF BIOLOGICAL CHEMISTRY
LA English
DT Article
ID TERMINAL SRC KINASE; FAMILY TYROSINE KINASES; ENERGY LANDSCAPE;
CRYSTAL-STRUCTURE; C-SRC; CONFORMATIONAL TRANSITIONS;
CATALYTIC-ACTIVITY; STRUCTURAL BASIS; SH2 DOMAIN; CSK
AB C-terminal Src kinase (Csk) phosphorylates and down-regulates the Src family tyrosine kinases (SFKs). Crystallographic studies of Csk found an unusual arrangement of the SH2 and SH3 regulatory domains about the kinase core, forming a compact structure. However, recent structural studies of mutant Csk in the presence of an inhibitor indicate that the enzyme accesses an expanded structure. To investigate whether wt-Csk may also access open conformations we applied small angle x-ray scattering (SAXS). We find wt-Csk frequently occupies an extended conformation where the regulatory domains are removed from the kinase core. In addition, all-atom structure-based simulations indicate Csk occupies two free energy basins. These basins correspond to ensembles of distinct global conformations of Csk: a compact structure and an extended structure. The transitions between these structures are entropically driven and accessible via thermal fluctuations that break local interactions. We further characterized the ensemble by generating theoretical scattering curves for mixed populations of conformations from both basins and compared the predicted scattering curves to the experimental profile. This population-combination analysis is more consistent with the experimental data than any rigid model. It suggests that Csk adopts a broad ensemble of conformations in solution, populating extended conformations not observed in the crystal structure that may play an important role in the regulation of Csk. The methodology developed here is broadly applicable to biological macromolecules and will provide useful information about what ensembles of conformations are consistent with the experimental data as well as the ubiquitous dynamic reversible assembly processes inherent in biology.
C1 [Jennings, Patricia A.] Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA.
[Oliveira, Leandro C.; Whitford, Paul C.; Onuchic, Jose N.] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
[Oliveira, Leandro C.; Whitford, Paul C.; Onuchic, Jose N.] Univ Calif San Diego, Ctr Theoret Biol Phys, La Jolla, CA 92093 USA.
[Adams, Joseph A.] Univ Calif San Diego, Dept Pharmacol, La Jolla, CA 92093 USA.
[Whitford, Paul C.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Blumenthal, Donald K.] Univ Utah, Dept Pharmacol & Toxicol, Salt Lake City, UT 84112 USA.
RP Jennings, PA (reprint author), Univ Calif San Diego, Dept Chem & Biochem, 9500 Gilman Dr, La Jolla, CA 92093 USA.
EM pajennin@ucsd.edu
RI Oliveira, Leandro /F-8638-2012;
OI Oliveira, Leandro /0000-0002-6932-6792; Blumenthal,
Donald/0000-0002-8614-1167
FU National Institutes of Health [5T32GM008326, DK54441, GM67969]; National
Science Foundation [PHY-0822283]; [NSF-MCB-0543906]
FX This work was supported, in whole or in part, by National Institutes of
Health Grants 5T32GM008326, DK54441, and GM67969. Support was also
provided by the Center for Theoretical Biological Physics sponsored by
National Science Foundation Grant PHY-0822283 with additional support
from NSF-MCB-0543906.
NR 58
TC 21
Z9 21
U1 1
U2 12
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 0021-9258
J9 J BIOL CHEM
JI J. Biol. Chem.
PD NOV 12
PY 2010
VL 285
IS 46
BP 36121
EP 36128
DI 10.1074/jbc.M110.116947
PG 8
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 675QK
UT WOS:000283845300088
PM 20801888
ER
PT J
AU Rambo, RP
Williams, GJ
Tainer, JA
AF Rambo, Robert P.
Williams, Gareth J.
Tainer, John A.
TI Achieving Fidelity in Homologous Recombination Despite Extreme
Complexity: Informed Decisions by Molecular Profiling
SO MOLECULAR CELL
LA English
DT Editorial Material
ID DNA-REPAIR
AB In this issue of Molecular Cell, Savir and Tlusty (2010) apply signal detection theory to show that homologous recombination machinery is optimally tuned to find homologous DNA sequences within an exceptionally high background of heterologous sequences.
C1 [Rambo, Robert P.; Williams, Gareth J.; Tainer, John A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Adv Light Source, Berkeley, CA 94720 USA.
[Tainer, John A.] Scripps Res Inst, Dept Mol Biol, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA.
RP Tainer, JA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Adv Light Source, Berkeley, CA 94720 USA.
EM jat@scripps.edu
FU NCI NIH HHS [P01 CA092584, P01 CA092584-09, P01 CA092584-10]
NR 10
TC 2
Z9 2
U1 1
U2 2
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 1097-2765
J9 MOL CELL
JI Mol. Cell
PD NOV 12
PY 2010
VL 40
IS 3
BP 347
EP 348
DI 10.1016/j.molcel.2010.10.032
PG 2
WC Biochemistry & Molecular Biology; Cell Biology
SC Biochemistry & Molecular Biology; Cell Biology
GA 684NJ
UT WOS:000284556300002
PM 21070960
ER
PT J
AU Proksch, R
Kalinin, SV
AF Proksch, Roger
Kalinin, Sergei V.
TI Energy dissipation measurements in frequency-modulated scanning probe
microscopy
SO NANOTECHNOLOGY
LA English
DT Article
ID ATOMIC-FORCE MICROSCOPY; SURFACE; CALIBRATION
AB Local dissipation measurements by scanning probe microscopy have attracted increasing interest as a method for probing energy losses and hysteretic phenomena due to magnetic, electrical, and structural transformations at the tip-surface junction. One challenge of this technique is the lack of a standard for ensuring quantification of the dissipation signal. In the following, we explored magnetic dissipation imaging of an yttrium-iron garnet (YIG) sample, using a number of similar but not identical cantilever probes. Typical frequency-dependent dispersion of the actuator-probe assembly commonly approached +/- 1 part in 10(3) Hz(-1), much larger than the minimum detectable level of +/- 1 part in 10(5) Hz(-1). This cantilever-dependent behavior results in a strong crosstalk between the conservative (frequency) and dissipative channels. This crosstalk was very apparent in the YIG dissipation images and in fact should be an inherent feature of single-frequency heterodyne detection schemes. It may also be a common effect in other dissipation imaging, even down to the atomic level, and in particular may be a significant issue when there are correlations between the conservative and dissipative components. On the other hand, we present a simple method for correcting for this effect. This correction technique resulted in self-consistent results for the YIG dissipation measurements and would presumably be effective for other systems as well.
C1 [Proksch, Roger] Asylum Res, Santa Barbara, CA USA.
[Kalinin, Sergei V.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
RP Proksch, R (reprint author), Asylum Res, Santa Barbara, CA USA.
RI Kalinin, Sergei/I-9096-2012
OI Kalinin, Sergei/0000-0001-5354-6152
FU ORNL LDRD
FX We thank Anil Gannepalli for checking algebra and calculations, Jason
Cleveland and Stephen Jesse for many fruitful discussions of dissipation
imaging and Ruben Perez for illuminating discussions of FM-AFM. The work
is supported in part (SVK) by the ORNL LDRD funding.
NR 24
TC 23
Z9 23
U1 1
U2 16
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0957-4484
J9 NANOTECHNOLOGY
JI Nanotechnology
PD NOV 12
PY 2010
VL 21
IS 45
AR 455705
DI 10.1088/0957-4484/21/45/455705
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA 697VS
UT WOS:000285548400019
PM 20947936
ER
PT J
AU Fan, R
Kinane, CJ
Charlton, TR
Dorner, R
Ali, M
de Vries, MA
Brydson, RMD
Marrows, CH
Hickey, BJ
Arena, DA
Tanner, BK
Nisbet, G
Langridge, S
AF Fan, R.
Kinane, C. J.
Charlton, T. R.
Dorner, R.
Ali, M.
de Vries, M. A.
Brydson, R. M. D.
Marrows, C. H.
Hickey, B. J.
Arena, D. A.
Tanner, B. K.
Nisbet, G.
Langridge, S.
TI Ferromagnetism at the interfaces of antiferromagnetic FeRh epilayers
SO PHYSICAL REVIEW B
LA English
DT Article
ID THIN-FILMS; METAL-ALLOYS; MULTILAYERS; TRANSITION; PRESSURE; RH
AB The nanoscale magnetic structure of FeRh epilayers has been studied by polarized neutron reflectometry. Epitaxial films with a nominal thickness of 500 angstrom were grown on MgO (001) substrates via molecular-beam epitaxy and capped with 20 angstrom of MgO. The FeRh films show a clear transition from the antiferromagnetic (AF) state to the ferromagnetic (FM) state with increasing temperature. Surprisingly the films possess a FM moment even at a temperature 80 K below the AF-FM transition temperature of the film. We have quantified the magnitude and spatial extent of this FM moment, which is confined to within similar to 60-80 angstrom of the FeRh near the top and bottom interfaces. These interfacial FM layers account for the unusual effects previously observed in films with thickness <100 angstrom. Given the delicate energy balance between the AF and FM ground states we suggest a metastable FM state resides near to the interface within an AF matrix. The length scale over which the FM region resides is consistent with the strained regions of the film.
C1 [Fan, R.; Kinane, C. J.; Charlton, T. R.; Langridge, S.] Rutherford Appleton Lab, Sci & Technol Facil Council, ISIS, Didcot OX11 0QX, Oxon, England.
[Dorner, R.; Ali, M.; de Vries, M. A.; Brydson, R. M. D.; Marrows, C. H.; Hickey, B. J.] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England.
[Arena, D. A.] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
[Tanner, B. K.] Univ Durham, Dept Phys, Durham DH1 3LE, England.
[Nisbet, G.] Diamond Light Source Ltd, Didcot OX11 0DE, Oxon, England.
RP Fan, R (reprint author), Rutherford Appleton Lab, Sci & Technol Facil Council, ISIS, Harwell Sci & Innovat Campus, Didcot OX11 0QX, Oxon, England.
EM raymond.fan@stfc.ac.uk
RI Marrows, Christopher/D-7980-2011; Hickey, B J/B-3333-2016;
OI Hickey, B J/0000-0001-8289-5618; Marrows,
Christopher/0000-0003-4812-6393; Langridge, Sean/0000-0003-1104-0772
FU EPSRC; STFC Center for Materials Physics and Chemistry; Nuffield
Foundation; Department of Energy Office of Basic Energy Sciences
FX This work was supported by the EPSRC, STFC Center for Materials Physics
and Chemistry, the Nuffield Foundation, and Department of Energy Office
of Basic Energy Sciences. We would like to thank ISIS and Diamond Light
Source Ltd. for the provision of neutron and x-ray beamtime,
respectively.
NR 34
TC 43
Z9 43
U1 5
U2 44
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 12
PY 2010
VL 82
IS 18
AR 184418
DI 10.1103/PhysRevB.82.184418
PG 5
WC Physics, Condensed Matter
SC Physics
GA 679EG
UT WOS:000284142800007
ER
PT J
AU Nielsen, E
Bhatt, RN
AF Nielsen, Erik
Bhatt, R. N.
TI Search for ferromagnetism in doped semiconductors in the absence of
transition metal ions
SO PHYSICAL REVIEW B
LA English
DT Article
ID DEGENERATE HUBBARD-MODEL; N-TYPE SILICON; INSULATOR-TRANSITION;
DISORDERED-SYSTEMS; ELECTRON CORRELATIONS; MAGNETIC-PROPERTIES; SMALL
CLUSTERS; PYRITE NIS2; COULOMB GAP; S-BAND
AB In contrast to semiconductors doped with transition metal magnetic elements (e.g., Ga(1-x)Mn(x)As), which become ferromagnetic at temperatures below similar to 10(2) K, semiconductors doped with nonmagnetic ions (e. g., silicon doped with phosphorous) have not shown evidence of ferromagnetism down to millikelvin temperatures. This is despite the fact that for low densities the system is expected to be well modeled by the Hubbard model, which is predicted to have a ferromagnetic ground state at T=0 on two-dimensional (2D) or three-dimensional bipartite lattices in the limit of strong correlation near half-filling. We examine the impurity band formed by hydrogenic centers in semiconductors at low densities, and show that it is described by a generalized Hubbard model which has, in addition to strong electron-electron interaction and disorder, an intrinsic electron-hole asymmetry. With the help of mean-field methods as well as exact diagonalization of clusters around half filling, we can establish the existence of a ferromagnetic ground state, at least on the nanoscale, which is more robust than that found in the standard Hubbard model. This ferromagnetism is most clearly seen in a regime inaccessible to bulk systems but attainable in quantum dots and 2D heterostructures. If observed, this would be the first experimental realization of a system exhibiting Nagaoka ferromagnetism. We present extensive numerical results for small systems that demonstrate the occurrence of high-spin ground states in both periodic and positionally disordered 2D systems. We examine how properties of real doped semiconductors, such as positional disorder and electron-hole asymmetry, affect the ground state spin of small 2D systems, and use the results to infer properties at longer length scales.
C1 [Nielsen, Erik; Bhatt, R. N.] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA.
[Nielsen, Erik] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Bhatt, R. N.] Princeton Ctr Theoret Sci, Princeton, NJ 08544 USA.
RP Nielsen, E (reprint author), Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA.
FU NSF-MRSEC [DMR-0213706, DMR-0819860]; United States Department of
Energy's National Nuclear Security Administration [DE-AC04-94AL85000]
FX This research was supported by NSF-MRSEC, Grants No. DMR-0213706 and No.
DMR-0819860. R.N.B. acknowledges the hospitality of the Aspen Center for
Physics, where some of the work was written up. The writing of this work
was partially supported by the Laboratory Directed Research and
Development program at Sandia National Laboratories (E.N.). Sandia is a
multiprogram laboratory operated by Sandia Corporation, a Lockheed
Martin Co., for the United States Department of Energy's National
Nuclear Security Administration under Contract No. DE-AC04-94AL85000.
NR 82
TC 4
Z9 4
U1 3
U2 14
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 12
PY 2010
VL 82
IS 19
AR 195117
DI 10.1103/PhysRevB.82.195117
PG 17
WC Physics, Condensed Matter
SC Physics
GA 679EM
UT WOS:000284143700003
ER
PT J
AU Tu, JJ
Li, J
Liu, W
Punnoose, A
Gong, Y
Ren, YH
Li, LJ
Cao, GH
Xu, ZA
Homes, CC
AF Tu, J. J.
Li, J.
Liu, W.
Punnoose, A.
Gong, Y.
Ren, Y. H.
Li, L. J.
Cao, G. H.
Xu, Z. A.
Homes, C. C.
TI Optical properties of the iron arsenic superconductor BaFe1.85Co0.15As2
SO PHYSICAL REVIEW B
LA English
DT Article
ID HIGH-TEMPERATURE SUPERCONDUCTORS; SUM-RULE; CONDUCTIVITY; METALS; MGB2;
TRANSITION; PNICTIDES; SYSTEMS; ORDER; STATE
AB The transport and complex optical properties of the electron-doped iron-arsenic superconductor BaFe1.85Co0.15As2 with T-c=25 K have been examined in the Fe-As planes above and below T-c. A Bloch-Gruneisen analysis of the resistivity yields a weak electron-phonon coupling constant lambda(ph)similar or equal to 0.2. The low-frequency optical response in the normal state appears to be dominated by the electron pocket and may be described by a weakly interacting Fermi liquid with a Drude plasma frequency of omega(p,D) similar or equal to 7840 cm(-1) (similar or equal to 0.972eV) and scattering rate 1/tau(D) similar or equal to 126 cm(-1) (similar or equal to 15 meV) just above T-c. The frequency-dependent scattering rate 1/tau(omega) has kinks at similar or equal to 12 and 55 meV that appear to be related to bosonic excitations. Below T-c the majority of the superconducting plasma frequency originates from the electron pocket and is estimated to be omega(p,S) similar or equal to 5200 cm(-1) (lambda(0) similar or equal to 3000 angstrom) for T << T-c, indicating that less than half the free carriers in the normal state have collapsed into the condensate, suggesting that this material is not in the clean limit. Supporting this finding is the observation that this material falls close to the universal scaling line for a Bardeen, Cooper, and Schrieffer dirty-limit superconductor in the weak-coupling limit. There are two energy scales for the superconductivity in the optical conductivity and photoinduced reflectivity at Delta(1)(0) similar or equal to 3.1 +/- 0.2 meV and Delta(2)(0) similar or equal to 7.4 +/- 0.3 meV. This corresponds to either the gapping of the electron and hole pockets, respectively, or an anisotropic s-wave gap on the electron pocket; both views are consistent with the s(+/-) model.
C1 [Tu, J. J.; Li, J.; Liu, W.; Punnoose, A.] CUNY City Coll, Dept Phys, New York, NY 10031 USA.
[Gong, Y.; Ren, Y. H.] CUNY Hunter Coll, Dept Phys & Astron, New York, NY 10065 USA.
[Li, L. J.; Cao, G. H.; Xu, Z. A.] Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China.
[Homes, C. C.] Brookhaven Natl Lab, Dept Condensed Matter Phys & Mat Sci, Upton, NY 11973 USA.
RP Tu, JJ (reprint author), CUNY City Coll, Dept Phys, New York, NY 10031 USA.
EM homes@bnl.gov
RI Cao, Guanghan/C-4753-2008; Gong, Yu /I-9950-2014
OI Gong, Yu /0000-0002-9357-9503
FU National Science Foundation; National Science Foundation of China;
Office of Science, U.S. Department of Energy [DE-AC02-98CH10886]
FX We would like to thank A. Akrap, J. L. Birman, G. L. Carr, A. V.
Chubukov, K. Felix, D. H. Lee, I. Mazin, P. Richard, E. Schachinger, D.
J. Singh, and H. Yang for helpful discussions and J. P. Carbotte for
performing an inversion of the optical data. Work was supported by the
National Science Foundation and the National Science Foundation of
China. Work at Brookhaven National Laboratory was supported in part by
the Office of Science, U.S. Department of Energy under Contract No.
DE-AC02-98CH10886.
NR 113
TC 65
Z9 65
U1 0
U2 15
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 12
PY 2010
VL 82
IS 17
AR 174509
DI 10.1103/PhysRevB.82.174509
PG 10
WC Physics, Condensed Matter
SC Physics
GA 679ED
UT WOS:000284142100006
ER
PT J
AU Shen, C
Heinz, U
Huovinen, P
Song, HC
AF Shen, Chun
Heinz, Ulrich
Huovinen, Pasi
Song, Huichao
TI Systematic parameter study of hadron spectra and elliptic flow from
viscous hydrodynamic simulations of Au plus Au collisions at root
s(NN)=200 GeV
SO PHYSICAL REVIEW C
LA English
DT Article
ID HEAVY-ION COLLISIONS; QUARK-GLUON PLASMA; RELATIVISTIC NUCLEAR
COLLISIONS; QCD PHASE-TRANSITION; THERMALIZATION; COLLABORATION;
TEMPERATURE; DEPENDENCE; EVOLUTION; MODELS
AB Using the (2 + 1)-dimensional viscous hydrodynamic code VISH2 + 1 [H. Song and U. Heinz, Phys. Lett. B 658, 279 (2008); H. Song and U. Heinz, Phys. Rev. C 77, 064901 (2008); H. Song, Ph. D. thesis, The Ohio State University, 2009], we present systematic studies of the dependence of pion and proton transverse-momentum spectra and their elliptic flow in 200A GeV Au + Au collisions on the parameters of the hydrodynamic model (thermalization time, initial entropy density distribution, decoupling temperature, equation of state, and specific shear viscosity eta/s). We identify a tension between the slope of the proton spectra, which (within hydrodynamic simulations that assume a constant shear viscosity to entropy density ratio) prefer larger eta/s values, and the slope of the p(T) dependence of charged hadron elliptic flow, which prefers smaller values of eta/s. Changing other model parameters does not appear to permit dissolution of this tension.
C1 [Shen, Chun; Heinz, Ulrich; Song, Huichao] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
[Huovinen, Pasi] Goethe Univ Frankfurt, Inst Theoret Phys, D-60438 Frankfurt, Germany.
[Song, Huichao] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Shen, C (reprint author), Ohio State Univ, Dept Phys, 174 W 18th Ave, Columbus, OH 43210 USA.
EM shen@mps.ohio-state.edu; heinz@mps.ohio-state.edu;
huovinen@th.physik.uni-frankfurt.de; HSong@LBL.gov
FU US Department of Energy [DE-SC0004286, DE-AC02-05CH11231]; JET
Collaboration [DE-SC0004104]; ExtreMe Matter Institute (EMMI)
FX This work was supported by the US Department of Energy under contracts
DE-SC0004286 and DE-AC02-05CH11231 and within the framework of the JET
Collaboration under Grant No. DE-SC0004104. P.H.'s research was
supported by the ExtreMe Matter Institute (EMMI). We thank Thomas Riley
for helping us with the analytic parametrization of the EOS tables for
s95p-PCE.
NR 85
TC 94
Z9 96
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9985
EI 2469-9993
J9 PHYS REV C
JI Phys. Rev. C
PD NOV 12
PY 2010
VL 82
IS 5
AR 054904
DI 10.1103/PhysRevC.82.054904
PG 13
WC Physics, Nuclear
SC Physics
GA 679ET
UT WOS:000284144600003
ER
PT J
AU Oliva, E
Zeitoun, P
Velarde, P
Fajardo, M
Cassou, K
Ros, D
Sebban, S
Portillo, D
le Pape, S
AF Oliva, Eduardo
Zeitoun, Philippe
Velarde, Pedro
Fajardo, Marta
Cassou, Kevin
Ros, David
Sebban, Stephan
Portillo, David
le Pape, Sebastien
TI Hydrodynamic study of plasma amplifiers for soft-x-ray lasers: A
transition in hydrodynamic behavior for plasma columns with widths
ranging from 20 mu m to 2 mm
SO PHYSICAL REVIEW E
LA English
DT Article
ID NEON-LIKE SELENIUM; NM; RADIATION; COHERENT; OPTIMIZATION; OPERATION;
TABLETOP; PULSE; BEAM; GAIN
AB Plasma-based seeded soft-x-ray lasers have the potential to generate high energy and highly coherent short pulse beams. Due to their high density, plasmas created by the interaction of an intense laser with a solid target should store the highest amount of energy density among all plasma amplifiers. Our previous numerical work with a two-dimensional (2D) adaptive mesh refinement hydrodynamic code demonstrated that careful tailoring of plasma shapes leads to a dramatic enhancement of both soft-x-ray laser output energy and pumping efficiency. Benchmarking of our 2D hydrodynamic code in previous experiments demonstrated a high level of confidence, allowing us to perform a full study with the aim of the way for 10-100 mu J seeded soft-x-ray lasers. In this paper, we describe in detail the mechanisms that drive the hydrodynamics of plasma columns. We observed transitions between narrow plasmas, where very strong bidimensional flow prevents them from storing energy, to large plasmas that store a high amount of energy. Millimeter-sized plasmas are outstanding amplifiers, but they have the limitation of transverse lasing. In this paper, we provide a preliminary solution to this problem.
C1 [Oliva, Eduardo; Velarde, Pedro; Portillo, David] Univ Politecn Madrid, Inst Fus Nucl, E-28006 Madrid, Spain.
[Oliva, Eduardo; Zeitoun, Philippe; Sebban, Stephan] Ecole Polytech, CNRS, ENSTA ParisTech, Lab Opt Apl,UMR 7639, F-91761 Palaiseau, France.
[Fajardo, Marta] Inst Super Tecn, Inst Plasmas & Fusao Nucl, P-1049001 Lisbon, Portugal.
[Cassou, Kevin; Ros, David] Univ Paris 11, CNRS, Phys Gaz & Plasmas Lab, UMR 8578, F-91405 Orsay, France.
[le Pape, Sebastien] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Oliva, E (reprint author), Univ Politecn Madrid, Inst Fus Nucl, E-28006 Madrid, Spain.
EM eduardo.oliva@ensta-paristech.fr
RI Oliva, Eduardo/P-4348-2014; Fajardo, Marta/A-4608-2012; Velarde,
Pedro/M-8091-2015
OI Oliva, Eduardo/0000-0003-2284-0927; Fajardo, Marta/0000-0003-2133-2365;
Velarde, Pedro/0000-0001-8615-4905
FU LASERLAB II [228334]; Spanish Ministerio de Educacion y Ciencia
[ENE2009-09837/FTN]
FX The authors would like to acknowledge the financial support provided by
the LASERLAB II 228334 (SFINX) European Project and RTRA "Triangle de la
Physique" project (SHYLAX) and the Spanish Ministerio de Educacion y
Ciencia within the Program No. ENE2009-09837/FTN.
NR 48
TC 14
Z9 14
U1 0
U2 5
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
J9 PHYS REV E
JI Phys. Rev. E
PD NOV 12
PY 2010
VL 82
IS 5
AR 056408
DI 10.1103/PhysRevE.82.056408
PN 2
PG 13
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 679FN
UT WOS:000284147100007
PM 21230603
ER
PT J
AU Aggarwal, MM
Ahammed, Z
Alakhverdyants, AV
Alekseev, I
Alford, J
Anderson, BD
Anson, D
Arkhipkin, D
Averichev, GS
Balewski, J
Barnby, LS
Baumgart, S
Beavis, DR
Bellwied, R
Betancourt, MJ
Betts, RR
Bhasin, A
Bhati, AK
Bichsel, H
Bielcik, J
Bielcikova, J
Biritz, B
Bland, LC
Bonner, BE
Bouchet, J
Braidot, E
Brandin, AV
Bridgeman, A
Bruna, E
Bueltmann, S
Bunzarov, I
Burton, TP
Cai, XZ
Caines, H
Sanchez, MCD
Catu, O
Cebra, D
Cendejas, R
Cervantes, MC
Chajecki, Z
Chaloupka, P
Chattopadhyay, S
Chen, HF
Chen, JH
Chen, JY
Cheng, J
Cherney, M
Chikanian, A
Choi, KE
Christie, W
Chung, P
Clarke, RF
Codrington, MJM
Corliss, R
Cramer, JG
Crawford, HJ
Das, D
Dash, S
Leyva, AD
De Silva, LC
Debbe, RR
Dedovich, TG
Derevschikov, AA
de Souza, RD
Didenko, L
Djawotho, P
Dogra, SM
Dong, X
Drachenberg, JL
Draper, JE
Dunlop, JC
Mazumdar, MRD
Efimov, LG
Elhalhuli, E
Elnimr, M
Engelage, J
Eppley, G
Erazmus, B
Estienne, M
Eun, L
Evdokimov, O
Fachini, P
Fatemi, R
Fedorisin, J
Fersch, RG
Filip, P
Finch, E
Fine, V
Fisyak, Y
Gagliardi, CA
Gangadharan, DR
Ganti, MS
Garcia-Solis, EJ
Geromitsos, A
Geurts, F
Ghazikhanian, V
Ghosh, P
Gorbunov, YN
Gordon, A
Grebenyuk, O
Grosnick, D
Guertin, SM
Gupta, A
Guryn, W
Haag, B
Hamed, A
Han, LX
Harris, JW
Hays-Wehle, JP
Heinz, M
Heppelmann, S
Hirsch, A
Hjort, E
Hoffman, AM
Hoffmann, GW
Hofman, DJ
Huang, B
Huang, HZ
Humanic, TJ
Huo, L
Igo, G
Jacobs, P
Jacobs, WW
Jena, C
Jin, F
Jones, CL
Jones, PG
Joseph, J
Judd, EG
Kabana, S
Kajimoto, K
Kang, K
Kapitan, J
Kauder, K
Keane, D
Kechechyan, A
Kettler, D
Kikola, DP
Kiryluk, J
Kisiel, A
Kizka, V
Klein, SR
Knospe, AG
Kocoloski, A
Koetke, DD
Kollegger, T
Konzer, J
Koralt, I
Koroleva, L
Korsch, W
Kotchenda, L
Kouchpil, V
Kravtsov, P
Krueger, K
Krus, M
Kumar, L
Kurnadi, P
Lamont, MAC
Landgraf, JM
LaPointe, S
Lauret, J
Lebedev, A
Lednicky, R
Lee, CH
Lee, JH
Leight, W
LeVine, MJ
Li, C
Li, L
Li, N
Li, W
Li, X
Li, X
Li, Y
Li, ZM
Lin, G
Lin, XY
Lindenbaum, SJ
Lisa, MA
Liu, F
Liu, H
Liu, J
Ljubicic, T
Llope, WJ
Longacre, RS
Love, WA
Lu, Y
Lukashov, EV
Luo, X
Ma, GL
Ma, YG
Mahapatra, DP
Majka, R
Mall, OI
Mangotra, LK
Manweiler, R
Margetis, S
Markert, C
Masui, H
Matis, HS
Matulenko, YA
McDonald, D
McShane, TS
Meschanin, A
Milner, R
Minaev, NG
Mioduszewski, S
Mischke, A
Mitrovski, MK
Mohanty, B
Mondal, MM
Morozov, B
Morozov, DA
Munhoz, MG
Nandi, BK
Nattrass, C
Nayak, TK
Nelson, JM
Netrakanti, PK
Ng, MJ
Nogach, LV
Nurushev, SB
Odyniec, G
Ogawa, A
Okorokov, V
Oldag, EW
Olson, D
Pachr, M
Page, BS
Pal, SK
Pandit, Y
Panebratsev, Y
Pawlak, T
Peitzmann, T
Perevoztchikov, V
Perkins, C
Peryt, W
Phatak, SC
Pile, P
Planinic, M
Ploskon, MA
Pluta, J
Plyku, D
Poljak, N
Poskanzer, AM
Potukuchi, BVKS
Powell, CB
Prindle, D
Pruneau, C
Pruthi, NK
Pujahari, PR
Putschke, J
Qiu, H
Raniwala, R
Raniwala, S
Ray, RL
Redwine, R
Reed, R
Ritter, HG
Roberts, JB
Rogachevskiy, OV
Romero, JL
Rose, A
Roy, C
Ruan, L
Sahoo, R
Sakai, S
Sakrejda, I
Sakuma, T
Salur, S
Sandweiss, J
Sangaline, E
Schambach, J
Scharenberg, RP
Schmitz, N
Schuster, TR
Seele, J
Seger, J
Selyuzhenkov, I
Seyboth, P
Shahaliev, E
Shao, M
Sharma, M
Shi, SS
Sichtermann, EP
Simon, F
Singaraju, RN
Skoby, MJ
Smirnov, N
Sorensen, P
Sowinski, J
Spinka, HM
Srivastava, B
Stanislaus, TDS
Staszak, D
Stevens, JR
Stock, R
Strikhanov, M
Stringfellow, B
Suaide, AAP
Suarez, MC
Subba, NL
Sumbera, M
Sun, XM
Sun, Y
Sun, Z
Surrow, B
Svirida, DN
Symons, TJM
de Toledo, AS
Takahashi, J
Tang, AH
Tang, Z
Tarini, LH
Tarnowsky, T
Thein, D
Thomas, JH
Tian, J
Timmins, AR
Timoshenko, S
Tlusty, D
Tokarev, M
Trainor, TA
Tram, VN
Trentalange, S
Tribble, RE
Tsai, OD
Ulery, J
Ullrich, T
Underwood, DG
Van Buren, G
van Leeuwen, M
van Nieuwenhuizen, G
Vanfossen, JA
Varma, R
Vasconcelos, GMS
Vasiliev, AN
Videbaek, F
Viyogi, YP
Vokal, S
Voloshin, SA
Wada, M
Walker, M
Wang, F
Wang, G
Wang, H
Wang, JS
Wang, Q
Wang, XL
Wang, Y
Webb, G
Webb, JC
Westfall, GD
Whitten, C
Wieman, H
Wissink, SW
Witt, R
Wu, YF
Xie, W
Xu, H
Xu, N
Xu, QH
Xu, W
Xu, Y
Xu, Z
Xue, L
Yang, Y
Yepes, P
Yip, K
Yoo, IK
Yue, Q
Zawisza, M
Zbroszczyk, H
Zhan, W
Zhang, JB
Zhang, S
Zhang, WM
Zhang, XP
Zhang, Y
Zhang, ZP
Zhao, J
Zhong, C
Zhou, J
Zhou, W
Zhu, X
Zhu, YH
Zoulkarneev, R
Zoulkarneeva, Y
AF Aggarwal, M. M.
Ahammed, Z.
Alakhverdyants, A. V.
Alekseev, I.
Alford, J.
Anderson, B. D.
Anson, Daniel
Arkhipkin, D.
Averichev, G. S.
Balewski, J.
Barnby, L. S.
Baumgart, S.
Beavis, D. R.
Bellwied, R.
Betancourt, M. J.
Betts, R. R.
Bhasin, A.
Bhati, A. K.
Bichsel, H.
Bielcik, J.
Bielcikova, J.
Biritz, B.
Bland, L. C.
Bonner, B. E.
Bouchet, J.
Braidot, E.
Brandin, A. V.
Bridgeman, A.
Bruna, E.
Bueltmann, S.
Bunzarov, I.
Burton, T. P.
Cai, X. Z.
Caines, H.
de la Barca Sanchez, M. Calderon
Catu, O.
Cebra, D.
Cendejas, R.
Cervantes, M. C.
Chajecki, Z.
Chaloupka, P.
Chattopadhyay, S.
Chen, H. F.
Chen, J. H.
Chen, J. Y.
Cheng, J.
Cherney, M.
Chikanian, A.
Choi, K. E.
Christie, W.
Chung, P.
Clarke, R. F.
Codrington, M. J. M.
Corliss, R.
Cramer, J. G.
Crawford, H. J.
Das, D.
Dash, S.
Leyva, A. Davila
De Silva, L. C.
Debbe, R. R.
Dedovich, T. G.
Derevschikov, A. A.
de Souza, R. Derradi
Didenko, L.
Djawotho, P.
Dogra, S. M.
Dong, X.
Drachenberg, J. L.
Draper, J. E.
Dunlop, J. C.
Mazumdar, M. R. Dutta
Efimov, L. G.
Elhalhuli, E.
Elnimr, M.
Engelage, J.
Eppley, G.
Erazmus, B.
Estienne, M.
Eun, L.
Evdokimov, O.
Fachini, P.
Fatemi, R.
Fedorisin, J.
Fersch, R. G.
Filip, P.
Finch, E.
Fine, V.
Fisyak, Y.
Gagliardi, C. A.
Gangadharan, D. R.
Ganti, M. S.
Garcia-Solis, E. J.
Geromitsos, A.
Geurts, F.
Ghazikhanian, V.
Ghosh, P.
Gorbunov, Y. N.
Gordon, A.
Grebenyuk, O.
Grosnick, D.
Guertin, S. M.
Gupta, A.
Guryn, W.
Haag, B.
Hamed, A.
Han, L-X
Harris, J. W.
Hays-Wehle, J. P.
Heinz, M.
Heppelmann, S.
Hirsch, A.
Hjort, E.
Hoffman, A. M.
Hoffmann, G. W.
Hofman, D. J.
Huang, B.
Huang, H. Z.
Humanic, T. J.
Huo, L.
Igo, G.
Jacobs, P.
Jacobs, W. W.
Jena, C.
Jin, F.
Jones, C. L.
Jones, P. G.
Joseph, J.
Judd, E. G.
Kabana, S.
Kajimoto, K.
Kang, K.
Kapitan, J.
Kauder, K.
Keane, D.
Kechechyan, A.
Kettler, D.
Kikola, D. P.
Kiryluk, J.
Kisiel, A.
Kizka, V.
Klein, S. R.
Knospe, A. G.
Kocoloski, A.
Koetke, D. D.
Kollegger, T.
Konzer, J.
Koralt, I.
Koroleva, L.
Korsch, W.
Kotchenda, L.
Kouchpil, V.
Kravtsov, P.
Krueger, K.
Krus, M.
Kumar, L.
Kurnadi, P.
Lamont, M. A. C.
Landgraf, J. M.
LaPointe, S.
Lauret, J.
Lebedev, A.
Lednicky, R.
Lee, C-H
Lee, J. H.
Leight, W.
LeVine, M. J.
Li, C.
Li, L.
Li, N.
Li, W.
Li, X.
Li, X.
Li, Y.
Li, Z. M.
Lin, G.
Lin, X. Y.
Lindenbaum, S. J.
Lisa, M. A.
Liu, F.
Liu, H.
Liu, J.
Ljubicic, T.
Llope, W. J.
Longacre, R. S.
Love, W. A.
Lu, Y.
Lukashov, E. V.
Luo, X.
Ma, G. L.
Ma, Y. G.
Mahapatra, D. P.
Majka, R.
Mall, O. I.
Mangotra, L. K.
Manweiler, R.
Margetis, S.
Markert, C.
Masui, H.
Matis, H. S.
Matulenko, Yu. A.
McDonald, D.
McShane, T. S.
Meschanin, A.
Milner, R.
Minaev, N. G.
Mioduszewski, S.
Mischke, A.
Mitrovski, M. K.
Mohanty, B.
Mondal, M. M.
Morozov, B.
Morozov, D. A.
Munhoz, M. G.
Nandi, B. K.
Nattrass, C.
Nayak, T. K.
Nelson, J. M.
Netrakanti, P. K.
Ng, M. J.
Nogach, L. V.
Nurushev, S. B.
Odyniec, G.
Ogawa, A.
Okorokov, V.
Oldag, E. W.
Olson, D.
Pachr, M.
Page, B. S.
Pal, S. K.
Pandit, Y.
Panebratsev, Y.
Pawlak, T.
Peitzmann, T.
Perevoztchikov, V.
Perkins, C.
Peryt, W.
Phatak, S. C.
Pile, P.
Planinic, M.
Ploskon, M. A.
Pluta, J.
Plyku, D.
Poljak, N.
Poskanzer, A. M.
Potukuchi, B. V. K. S.
Powell, C. B.
Prindle, D.
Pruneau, C.
Pruthi, N. K.
Pujahari, P. R.
Putschke, J.
Qiu, H.
Raniwala, R.
Raniwala, S.
Ray, R. L.
Redwine, R.
Reed, R.
Ritter, H. G.
Roberts, J. B.
Rogachevskiy, O. V.
Romero, J. L.
Rose, A.
Roy, C.
Ruan, L.
Sahoo, R.
Sakai, S.
Sakrejda, I.
Sakuma, T.
Salur, S.
Sandweiss, J.
Sangaline, E.
Schambach, J.
Scharenberg, R. P.
Schmitz, N.
Schuster, T. R.
Seele, J.
Seger, J.
Selyuzhenkov, I.
Seyboth, P.
Shahaliev, E.
Shao, M.
Sharma, M.
Shi, S. S.
Sichtermann, E. P.
Simon, F.
Singaraju, R. N.
Skoby, M. J.
Smirnov, N.
Sorensen, P.
Sowinski, J.
Spinka, H. M.
Srivastava, B.
Stanislaus, T. D. S.
Staszak, D.
Stevens, J. R.
Stock, R.
Strikhanov, M.
Stringfellow, B.
Suaide, A. A. P.
Suarez, M. C.
Subba, N. L.
Sumbera, M.
Sun, X. M.
Sun, Y.
Sun, Z.
Surrow, B.
Svirida, D. N.
Symons, T. J. M.
de Toledo, A. Szanto
Takahashi, J.
Tang, A. H.
Tang, Z.
Tarini, L. H.
Tarnowsky, T.
Thein, D.
Thomas, J. H.
Tian, J.
Timmins, A. R.
Timoshenko, S.
Tlusty, D.
Tokarev, M.
Trainor, T. A.
Tram, V. N.
Trentalange, S.
Tribble, R. E.
Tsai, O. D.
Ulery, J.
Ullrich, T.
Underwood, D. G.
Van Buren, G.
van Leeuwen, M.
van Nieuwenhuizen, G.
Vanfossen, J. A., Jr.
Varma, R.
Vasconcelos, G. M. S.
Vasiliev, A. N.
Videbaek, F.
Viyogi, Y. P.
Vokal, S.
Voloshin, S. A.
Wada, M.
Walker, M.
Wang, F.
Wang, G.
Wang, H.
Wang, J. S.
Wang, Q.
Wang, X. L.
Wang, Y.
Webb, G.
Webb, J. C.
Westfall, G. D.
Whitten, C., Jr.
Wieman, H.
Wissink, S. W.
Witt, R.
Wu, Y. F.
Xie, W.
Xu, H.
Xu, N.
Xu, Q. H.
Xu, W.
Xu, Y.
Xu, Z.
Xue, L.
Yang, Y.
Yepes, P.
Yip, K.
Yoo, I-K
Yue, Q.
Zawisza, M.
Zbroszczyk, H.
Zhan, W.
Zhang, J. B.
Zhang, S.
Zhang, W. M.
Zhang, X. P.
Zhang, Y.
Zhang, Z. P.
Zhao, J.
Zhong, C.
Zhou, J.
Zhou, W.
Zhu, X.
Zhu, Y. H.
Zoulkarneev, R.
Zoulkarneeva, Y.
CA STAR Collaboration
TI Measurement of the Bottom Quark Contribution to Nonphotonic Electron
Production in p plus p Collisions at root s=200 GeV
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID TOMOGRAPHY; MATTER
AB The contribution of B meson decays to nonphotonic electrons, which are mainly produced by the semileptonic decays of heavy-flavor mesons, in p + p collisions at root s = 200 GeV has been measured using azimuthal correlations between nonphotonic electrons and hadrons. The extracted B decay contribution is approximately 50% at a transverse momentum of p(T) >= 5 GeV/c. These measurements constrain the nuclear modification factor for electrons from B and D meson decays. The result indicates that B meson production in heavy ion collisions is also suppressed at high p(T).
C1 [Bridgeman, A.; Krueger, K.; Spinka, H. M.; Underwood, D. G.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Barnby, L. S.; Elhalhuli, E.; Jones, P. G.; Nelson, J. M.] Univ Birmingham, Birmingham, W Midlands, England.
[Arkhipkin, D.; Beavis, D. R.; Bland, L. C.; Burton, T. P.; Christie, W.; Debbe, R. R.; Didenko, L.; Dunlop, J. C.; Fachini, P.; Fine, V.; Fisyak, Y.; Gordon, A.; Guryn, W.; Lamont, M. A. C.; Landgraf, J. M.; Lauret, J.; Lebedev, A.; Lee, J. H.; LeVine, M. J.; Ljubicic, T.; Longacre, R. S.; Love, W. A.; Ogawa, A.; Perevoztchikov, V.; Pile, P.; Ruan, L.; Sorensen, P.; Tang, A. H.; Ullrich, T.; Van Buren, G.; Videbaek, F.; Webb, J. C.; Xu, Z.; Yip, K.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Crawford, H. J.; Engelage, J.; Judd, E. G.; Ng, M. J.; Perkins, C.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[de la Barca Sanchez, M. Calderon; Cebra, D.; Das, D.; Draper, J. E.; Haag, B.; Liu, H.; Mall, O. I.; Reed, R.; Romero, J. L.; Salur, S.; Sangaline, E.] Univ Calif Davis, Davis, CA 95616 USA.
[Biritz, B.; Cendejas, R.; Gangadharan, D. R.; Ghazikhanian, V.; Guertin, S. M.; Huang, H. Z.; Igo, G.; Kurnadi, P.; Sakai, S.; Staszak, D.; Trentalange, S.; Tsai, O. D.; Wang, G.; Whitten, C., Jr.; Xu, W.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA.
[de Souza, R. Derradi; Takahashi, J.; Vasconcelos, G. M. S.] Univ Estadual Campinas, Sao Paulo, Brazil.
[Betts, R. R.; Evdokimov, O.; Garcia-Solis, E. J.; Hofman, D. J.; Kauder, K.; Suarez, M. C.] Univ Illinois, Chicago, IL 60607 USA.
[Cherney, M.; Gorbunov, Y. N.; McShane, T. S.; Seger, J.] Creighton Univ, Omaha, NE 68178 USA.
[Bielcik, J.; Krus, M.; Pachr, M.] Czech Tech Univ, FNSPE, Prague 11519, Czech Republic.
[Bielcikova, J.; Chaloupka, P.; Chung, P.; Kapitan, J.; Kouchpil, V.; Sumbera, M.; Tlusty, D.] Acad Sci Czech Republic, Inst Nucl Phys, CZ-25068 Rez, Czech Republic.
[Kollegger, T.; Mitrovski, M. K.; Schuster, T. R.; Stock, R.] Goethe Univ Frankfurt, Frankfurt, Germany.
[Dash, S.; Jena, C.; Mahapatra, D. P.; Phatak, S. C.] Inst Phys, Bhubaneswar 751005, Orissa, India.
[Nandi, B. K.; Pujahari, P. R.; Varma, R.] Indian Inst Technol, Bombay 400076, Maharashtra, India.
[Jacobs, W. W.; Page, B. S.; Selyuzhenkov, I.; Sowinski, J.; Stevens, J. R.; Wissink, S. W.] Indiana Univ, Bloomington, IN 47408 USA.
[Alekseev, I.; Koroleva, L.; Morozov, B.; Svirida, D. N.] Alikhanov Inst Theoret & Expt Phys, Moscow, Russia.
[Bhasin, A.; Dogra, S. M.; Gupta, A.; Mangotra, L. K.; Potukuchi, B. V. K. S.] Univ Jammu, Jammu 180001, India.
[Alakhverdyants, A. V.; Averichev, G. S.; Bunzarov, I.; Dedovich, T. G.; Efimov, L. G.; Fedorisin, J.; Filip, P.; Kechechyan, A.; Kizka, V.; Lednicky, R.; Panebratsev, Y.; Rogachevskiy, O. V.; Shahaliev, E.; Tokarev, M.; Vokal, S.; Zoulkarneev, R.; Zoulkarneeva, Y.] Joint Inst Nucl Res, Dubna 141980, Russia.
[Alford, J.; Anderson, B. D.; Bouchet, J.; Joseph, J.; Keane, D.; Kumar, L.; Margetis, S.; Pandit, Y.; Subba, N. L.; Vanfossen, J. A., Jr.; Zhang, W. M.] Kent State Univ, Kent, OH 44242 USA.
[Fatemi, R.; Fersch, R. G.; Korsch, W.; Webb, G.] Univ Kentucky, Lexington, KY 40506 USA.
[Qiu, H.; Sun, Z.; Wang, J. S.; Xu, H.; Yang, Y.; Zhan, W.] Inst Modern Phys, Lanzhou, Peoples R China.
[Ahammed, Z.; Dong, X.; Grebenyuk, O.; Hjort, E.; Jacobs, P.; Kikola, D. P.; Kiryluk, J.; Klein, S. R.; Masui, H.; Matis, H. S.; Odyniec, G.; Olson, D.; Ploskon, M. A.; Poskanzer, A. M.; Powell, C. B.; Ritter, H. G.; Rose, A.; Sakrejda, I.; Sichtermann, E. P.; Sun, X. M.; Symons, T. J. M.; Thomas, J. H.; Tram, V. N.; Wieman, H.; Xu, N.; Zhang, X. P.; Zhang, Y.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Balewski, J.; Betancourt, M. J.; Corliss, R.; Hays-Wehle, J. P.; Hoffman, A. M.; Jones, C. L.; Kocoloski, A.; Leight, W.; Milner, R.; Redwine, R.; Sakuma, T.; Seele, J.; Surrow, B.; van Nieuwenhuizen, G.; Walker, M.] MIT, Cambridge, MA 02139 USA.
[Schmitz, N.; Seyboth, P.; Simon, F.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.
[Tarnowsky, T.; Wang, H.; Westfall, G. D.] Michigan State Univ, E Lansing, MI 48824 USA.
[Brandin, A. V.; Kotchenda, L.; Kravtsov, P.; Lukashov, E. V.; Okorokov, V.; Strikhanov, M.; Timoshenko, S.] Moscow Engn Phys Inst, Moscow 115409, Russia.
[Lindenbaum, S. J.] CUNY City Coll, New York, NY 10031 USA.
[Braidot, E.; Mischke, A.; Peitzmann, T.; van Leeuwen, M.] NIKHEF, Amsterdam, Netherlands.
[Braidot, E.; Mischke, A.; Peitzmann, T.; van Leeuwen, M.] Univ Utrecht, Amsterdam, Netherlands.
[Anson, Daniel; Chajecki, Z.; Humanic, T. J.; Lisa, M. A.] Ohio State Univ, Columbus, OH 43210 USA.
[Bueltmann, S.; Koralt, I.; Plyku, D.] Old Dominion Univ, Norfolk, VA 23529 USA.
[Aggarwal, M. M.; Bhati, A. K.; Pruthi, N. K.] Panjab Univ, Chandigarh 160014, India.
[Eun, L.; Heppelmann, S.] Penn State Univ, University Pk, PA 16802 USA.
[Derevschikov, A. A.; Matulenko, Yu. A.; Meschanin, A.; Minaev, N. G.; Morozov, D. A.; Nogach, L. V.; Nurushev, S. B.; Vasiliev, A. N.] Inst High Energy Phys, Protvino, Russia.
[Hirsch, A.; Konzer, J.; Li, X.; Netrakanti, P. K.; Scharenberg, R. P.; Skoby, M. J.; Srivastava, B.; Stringfellow, B.; Ulery, J.; Wang, F.; Wang, Q.; Xie, W.] Purdue Univ, W Lafayette, IN 47907 USA.
[Choi, K. E.; Lee, C-H; Yoo, I-K] Pusan Natl Univ, Pusan 609735, South Korea.
[Raniwala, R.; Raniwala, S.] Univ Rajasthan, Jaipur 302004, Rajasthan, India.
[Bonner, B. E.; Eppley, G.; Geurts, F.; Liu, J.; Llope, W. J.; McDonald, D.; Roberts, J. B.; Yepes, P.; Zhou, J.] Rice Univ, Houston, TX 77251 USA.
[Munhoz, M. G.; Suaide, A. A. P.; de Toledo, A. Szanto] Univ Sao Paulo, Sao Paulo, Brazil.
[Chen, H. F.; Huang, B.; Li, C.; Lu, Y.; Luo, X.; Shao, M.; Sun, Y.; Tang, Z.; Wang, X. L.; Xu, Y.; Zhang, Z. P.] Univ Sci & Technol China, Hefei 230026, Peoples R China.
[Li, X.; Xu, Q. H.; Zhou, W.] Shandong Univ, Jinan 250100, Shandong, Peoples R China.
[Cai, X. Z.; Chen, J. H.; Han, L-X; Jin, F.; Li, W.; Ma, G. L.; Ma, Y. G.; Tian, J.; Xue, L.; Zhang, S.; Zhao, J.; Zhong, C.; Zhu, Y. H.] Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
[Erazmus, B.; Estienne, M.; Geromitsos, A.; Kabana, S.; Roy, C.; Sahoo, R.] SUBATECH, Nantes, France.
[Cervantes, M. C.; Clarke, R. F.; Codrington, M. J. M.; Djawotho, P.; Drachenberg, J. L.; Gagliardi, C. A.; Hamed, A.; Huo, L.; Mioduszewski, S.; Tribble, R. E.] Texas A&M Univ, College Stn, TX 77843 USA.
[Leyva, A. Davila; Hoffmann, G. W.; Kajimoto, K.; Li, L.; Markert, C.; Oldag, E. W.; Ray, R. L.; Schambach, J.; Thein, D.; Wada, M.] Univ Texas Austin, Austin, TX 78712 USA.
[Cheng, J.; Kang, K.; Li, Y.; Wang, Y.; Yue, Q.; Zhu, X.] Tsinghua Univ, Beijing 100084, Peoples R China.
[Witt, R.] USN Acad, Annapolis, MD 21402 USA.
[Grosnick, D.; Koetke, D. D.; Manweiler, R.; Stanislaus, T. D. S.] Valparaiso Univ, Valparaiso, IN 46383 USA.
[Chattopadhyay, S.; Mazumdar, M. R. Dutta; Ganti, M. S.; Ghosh, P.; Mohanty, B.; Mondal, M. M.; Nayak, T. K.; Pal, S. K.; Singaraju, R. N.; Viyogi, Y. P.] Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India.
[Kisiel, A.; Pawlak, T.; Peryt, W.; Pluta, J.; Zawisza, M.; Zbroszczyk, H.] Warsaw Univ Technol, Warsaw, Poland.
[Bichsel, H.; Cramer, J. G.; Kettler, D.; Prindle, D.; Trainor, T. A.] Univ Washington, Seattle, WA 98195 USA.
[Bellwied, R.; De Silva, L. C.; Elnimr, M.; LaPointe, S.; Pruneau, C.; Sharma, M.; Tarini, L. H.; Timmins, A. R.; Voloshin, S. A.] Wayne State Univ, Detroit, MI 48201 USA.
[Chen, J. Y.; Li, N.; Li, Z. M.; Lin, X. Y.; Liu, F.; Shi, S. S.; Wu, Y. F.; Zhang, J. B.] CCNU HZNU, Inst Particle Phys, Wuhan 430079, Peoples R China.
[Baumgart, S.; Bruna, E.; Caines, H.; Catu, O.; Chikanian, A.; Finch, E.; Harris, J. W.; Heinz, M.; Knospe, A. G.; Lin, G.; Majka, R.; Nattrass, C.; Putschke, J.; Sandweiss, J.; Smirnov, N.] Yale Univ, New Haven, CT 06520 USA.
[Planinic, M.; Poljak, N.] Univ Zagreb, HR-10002 Zagreb, Croatia.
RP Aggarwal, MM (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
RI Mischke, Andre/D-3614-2011; Yang, Yanyun/B-9485-2014; Bielcikova,
Jana/G-9342-2014; Takahashi, Jun/B-2946-2012; Planinic,
Mirko/E-8085-2012; Yoo, In-Kwon/J-6222-2012; Peitzmann,
Thomas/K-2206-2012; Witt, Richard/H-3560-2012; Yip, Kin/D-6860-2013;
Xue, Liang/F-8077-2013; Voloshin, Sergei/I-4122-2013; Pandit,
Yadav/I-2170-2013; Lednicky, Richard/K-4164-2013; Xu,
Wenqin/H-7553-2014; Barnby, Lee/G-2135-2010; Alekseev, Igor/J-8070-2014;
Sumbera, Michal/O-7497-2014; Strikhanov, Mikhail/P-7393-2014; Dogra,
Sunil /B-5330-2013; Chaloupka, Petr/E-5965-2012; Huang,
Bingchu/H-6343-2015; Nattrass, Christine/J-6752-2016; Derradi de Souza,
Rafael/M-4791-2013; Suaide, Alexandre/L-6239-2016; Svirida,
Dmitry/R-4909-2016; Inst. of Physics, Gleb Wataghin/A-9780-2017;
Okorokov, Vitaly/C-4800-2017; Ma, Yu-Gang/M-8122-2013
OI Yang, Yanyun/0000-0002-5982-1706; Takahashi, Jun/0000-0002-4091-1779;
Peitzmann, Thomas/0000-0002-7116-899X; Yip, Kin/0000-0002-8576-4311;
Xue, Liang/0000-0002-2321-9019; Pandit, Yadav/0000-0003-2809-7943; Xu,
Wenqin/0000-0002-5976-4991; Barnby, Lee/0000-0001-7357-9904; Alekseev,
Igor/0000-0003-3358-9635; Sumbera, Michal/0000-0002-0639-7323;
Strikhanov, Mikhail/0000-0003-2586-0405; Huang,
Bingchu/0000-0002-3253-3210; Nattrass, Christine/0000-0002-8768-6468;
Derradi de Souza, Rafael/0000-0002-2084-7001; Suaide,
Alexandre/0000-0003-2847-6556; Okorokov, Vitaly/0000-0002-7162-5345; Ma,
Yu-Gang/0000-0002-0233-9900
FU RHIC Operations Group; RCF at BNL; NERSC Center at LBNL; Open Science
Grid consortium; Offices of NP and HEP within the U.S. DOE Office of
Science; U.S. NSF; Sloan Foundation; DFG, Germany; CNRS/IN2P3; STFC;
EPSRC of the United Kingdom; FAPESP; CNPq of Brazil; Ministry of Ed. and
Sci. of the Russian Federation; NNSFC; CAS; MoST; MoE of China; GA; MSMT
of the Czech Republic; FOM; NWO of the Netherlands; DAE; DST; CSIR of
India; Polish Ministry of Sci. and Higher Ed.; Korea Research
Foundation; Ministry of Sci., Ed. and Sports of the Rep. Of Croatia;
Russian Ministry of Sci. and Tech; RosAtom of Russia
FX We thank the RHIC Operations Group and RCF at BNL, the NERSC Center at
LBNL and the Open Science Grid consortium for providing resources and
support. This work was supported in part by the Offices of NP and HEP
within the U.S. DOE Office of Science, the U.S. NSF, the Sloan
Foundation, the DFG cluster of excellence "Origin and Structure of the
Universe" of Germany, CNRS/IN2P3, STFC and EPSRC of the United Kingdom,
FAPESP CNPq of Brazil, Ministry of Ed. and Sci. of the Russian
Federation, NNSFC, CAS, MoST, and MoE of China, GA and MSMT of the Czech
Republic, FOM and NWO of the Netherlands, DAE, DST, and CSIR of India,
Polish Ministry of Sci. and Higher Ed., Korea Research Foundation,
Ministry of Sci., Ed. and Sports of the Rep. Of Croatia, Russian
Ministry of Sci. and Tech, and RosAtom of Russia.
NR 20
TC 48
Z9 48
U1 1
U2 17
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 12
PY 2010
VL 105
IS 20
AR 202301
DI 10.1103/PhysRevLett.105.202301
PG 6
WC Physics, Multidisciplinary
SC Physics
GA 679FU
UT WOS:000284147800003
PM 21231222
ER
PT J
AU Analytis, JG
Chu, JH
McDonald, RD
Riggs, SC
Fisher, IR
AF Analytis, J. G.
Chu, J-H
McDonald, R. D.
Riggs, S. C.
Fisher, I. R.
TI Enhanced Fermi-Surface Nesting in Superconducting BaFe2(As1-xPx)(2)
Revealed by the de Haas-van Alphen Effect
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
AB The three-dimensional Fermi-surface morphology of superconducting BaFe2(As0.37P0.63)(2) with T-c = 9 K is determined using the de Haas-van Alphen effect. The inner electron pocket has a similar area and k(z) interplane warping to the observed hole pocket, revealing that the Fermi surfaces are geometrically well nested in the (pi, pi) direction. These results are in stark contrast to the fermiology of the nonsuperconducting phosphides (x = 1), and therefore suggest an important role for nesting in pnictide superconductivity.
C1 [Analytis, J. G.; Chu, J-H; Riggs, S. C.; Fisher, I. R.] Stanford Inst Mat & Energy Sci, SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
[Analytis, J. G.; Chu, J-H; Riggs, S. C.; Fisher, I. R.] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA.
[Analytis, J. G.; Chu, J-H; Riggs, S. C.; Fisher, I. R.] Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA.
[McDonald, R. D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Analytis, JG (reprint author), Stanford Inst Mat & Energy Sci, SLAC Natl Accelerator Lab, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
RI McDonald, Ross/H-3783-2013;
OI McDonald, Ross/0000-0002-0188-1087; Mcdonald, Ross/0000-0002-5819-4739
FU BES; NSF Division of Materials Research [DMR-0654118]; State of Florida;
U.S. DOE, Office of Basic Energy Sciences [DE-AC02-76SF00515]
FX The authors would like to thank Antony Carrington for useful comments
and E. A. Yelland for access to computer software. R. D. M. acknowledges
support from the BES "Science in 100 T" program. The NHMFL is supported
by the NSF Division of Materials Research through DMR-0654118 and the
State of Florida. J. G. A., J. H. C., and I. R. F. acknowledge support
by the U.S. DOE, Office of Basic Energy Sciences under Contract No.
DE-AC02-76SF00515.
NR 23
TC 40
Z9 40
U1 1
U2 15
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 12
PY 2010
VL 105
IS 20
AR 207004
DI 10.1103/PhysRevLett.105.207004
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 679FU
UT WOS:000284147800011
PM 21231258
ER
PT J
AU Ovchinnikov, SY
Sternberg, JB
Macek, JH
Lee, TG
Schultz, DR
AF Ovchinnikov, S. Yu
Sternberg, J. B.
Macek, J. H.
Lee, Teck-Ghee
Schultz, D. R.
TI Creating and Manipulating Vortices in Atomic Wave Functions with Short
Electric Field Pulses
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID CYCLE ELECTROMAGNETIC PULSES; RYDBERG ATOMS; IONIZATION; SUBPICOSECOND;
PACKETS
AB We demonstrate the creation of vortices in the electronic probability density of an atom subject to short electric field pulses, how these vortices evolve and can be manipulated by varying the applied pulses, and that they persist to macroscopic distances in the spectrum of ejected electrons. This opens the possibility to use practical femtosecond or shorter laser pulses to create and manipulate these vortex quasiparticles at the atomic scale and observe them in the laboratory. Within a hydrodynamic interpretation we also show, since the Schrodinger equation is a particular instance of the Navier-Stokes equations, that for compressible fluids vortices can appear spontaneously and with a certain time delay, which is not expected to occur from the conventional point of view, illustrating applicability of the present study to vortex formation more broadly.
C1 [Ovchinnikov, S. Yu; Sternberg, J. B.; Macek, J. H.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37496 USA.
[Macek, J. H.; Schultz, D. R.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
[Lee, Teck-Ghee] Auburn Univ, Dept Phys, Auburn, AL 36849 USA.
[Ovchinnikov, S. Yu] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia.
RP Ovchinnikov, SY (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37496 USA.
RI Lee, Teck Ghee/D-5037-2012; Ovchinnikov, Serguei/C-4994-2014
OI Lee, Teck Ghee/0000-0001-9472-3194;
FU Office of Basic Energy Sciences, U.S. Department of Energy
[DE-FG02-02ER15283]; Oak Ridge National Laboratory [DE-AC05-00OR22725]
FX This research is sponsored by the Office of Basic Energy Sciences, U.S.
Department of Energy, through grants to the University of Tennessee
(DE-FG02-02ER15283) and the Oak Ridge National Laboratory which is
managed by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725.
Fruitful discussions with C. O. Reinhold are also gratefully
acknowledged.
NR 20
TC 7
Z9 7
U1 0
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 12
PY 2010
VL 105
IS 20
AR 203005
DI 10.1103/PhysRevLett.105.203005
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 679FU
UT WOS:000284147800005
PM 21231229
ER
PT J
AU Turse, JE
Marshall, MJ
Fredrickson, JK
Lipton, MS
Callister, SJ
AF Turse, Joshua E.
Marshall, Matthew J.
Fredrickson, James K.
Lipton, Mary S.
Callister, Stephen J.
TI An Empirical Strategy for Characterizing Bacterial Proteomes across
Species in the Absence of Genomic Sequences
SO PLOS ONE
LA English
DT Article
ID SHEWANELLA-ONEIDENSIS MR-1; OUTER-MEMBRANE CYTOCHROMES;
MASS-SPECTROMETRY; PROTEIN IDENTIFICATION; PUTREFACIENS MR-1; REDUCTION;
TANDEM; CONSERVATION; DIVERGENCE; METABOLISM
AB Global protein identification through current proteomics methods typically depends on the availability of sequenced genomes. In spite of increasingly high throughput sequencing technologies, this information is not available for every microorganism and rarely available for entire microbial communities. Nevertheless, the protein-level homology that exists between related bacteria makes it possible to extract biological information from the proteome of an organism or microbial community by using the genomic sequences of a near neighbor organism. Here, we demonstrate a trans-organism search strategy for determining the extent to which near-neighbor genome sequences can be applied to identify proteins in unsequenced environmental isolates. In proof of concept testing, we found that within a CLUSTAL W distance of 0.089, near-neighbor genomes successfully identified a high percentage of proteins within an organism. Application of this strategy to characterize environmental bacterial isolates lacking sequenced genomes, but having 16S rDNA sequence similarity to Shewanella resulted in the identification of 300-500 proteins in each strain. The majority of identified pathways mapped to core processes, as well as to processes unique to the Shewanellae, in particular to the presence of c-type cytochromes. Examples of core functional categories include energy metabolism, protein and nucleotide synthesis and cofactor biosynthesis, allowing classification of bacteria by observation of conserved processes. Additionally, within these core functionalities, we observed proteins involved in the alternative lactate utilization pathway, recently described in Shewanella.
C1 [Turse, Joshua E.; Marshall, Matthew J.; Fredrickson, James K.; Lipton, Mary S.; Callister, Stephen J.] Pacific NW Natl Lab, Biol Sci & Computat Sci & Math Div, Richland, WA 99352 USA.
RP Turse, JE (reprint author), Washington State Univ, Coll Vet Med, Pullman, WA 99164 USA.
EM stephen.callister@pnl.gov
OI /0000-0001-7041-1823; Marshall, Matthew J/0000-0002-2402-8003
FU Department of Energy Office of Biological and Environmental Research
(DOE/BER) [ER63232-1018220-0007203]; National Institute of Allergy and
Infectious Diseases (NIH/DHHS) [Y1-AI-4894-01]; NIH National Center for
Research Resources [RR18522]
FX Department of Energy Office of Biological and Environmental Research
(DOE/BER; ER63232-1018220-0007203), the National Institute of Allergy
and Infectious Diseases (NIH/DHHS through interagency agreement
Y1-AI-4894-01), and the NIH National Center for Research Resources
(RR18522). The funders had no role in study design, data collection and
analysis, decision to publish, or preparation of the manuscript.
NR 66
TC 12
Z9 12
U1 0
U2 8
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD NOV 12
PY 2010
VL 5
IS 11
AR e13968
DI 10.1371/journal.pone.0013968
PG 11
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 679FT
UT WOS:000284147700016
PM 21103051
ER
PT J
AU Agiral, A
Boyadjian, C
Seshan, K
Lefferts, L
Gardeniers, JGE
AF Agiral, Anil
Boyadjian, Cassia
Seshan, K.
Lefferts, Leon
Gardeniers, J. G. E. (Han)
TI Pathway Study on Dielectric Barrier Discharge Plasma Conversion of
Hexane
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID CROSS-SECTIONS; HYDROCARBONS; ELECTRONS; ACTIVATION; CHEMISTRY; CRACKING
AB A plasma reactor based on dielectric barrier discharge has been developed for oxidative cracking of hexane to yield olefins at atmospheric pressure. Dissociation of hexane in the presence of oxygen with nonequilibrium plasma state represents complex chemistry, and both conversion and product selectivities differ significantly from the thermodynamic equilibrium state. In order to understand plasma chemistry initiated by electron impact processes, the Boltzmann equation is solved to determine the average electron energy and energy fractions in collision processes. Activation of oxygen in the plasma brings a new route with electron impact dissociation yielding atomic oxygen radicals and initiates oxidative cracking of hexane. Changes in certain features of the dissociation pattern of hexane to yield olefin products with varying parameters such as temperature, oxygen addition, and helium concentration are discussed.
C1 [Agiral, Anil; Boyadjian, Cassia; Seshan, K.; Lefferts, Leon] Univ Twente, Fac Sci & Technol, MESA Inst Nanotechnol, IMPACT, NL-7500 AE Enschede, Netherlands.
[Agiral, Anil] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
RP Agiral, A (reprint author), Univ Twente, Fac Sci & Technol, MESA Inst Nanotechnol, IMPACT, POB 217, NL-7500 AE Enschede, Netherlands.
EM aagiral@lbl.gov
RI Gardeniers, Johannes/B-6309-2013
OI Gardeniers, Johannes/0000-0003-0581-2668
FU Technology Foundation STW; Applied science division of NWO; Ministry or
Economic Affairs, The Netherlands [06626]
FX This research was supported by the Technology Foundation STW, applied
science division of NWO and the technology programme of the Ministry or
Economic Affairs, The Netherlands, Project Numbe 06626. The authors also
acknowledge lug. B. Geerdink and K. Altena-Schildkamp for technical
support.
NR 32
TC 3
Z9 3
U1 0
U2 20
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD NOV 11
PY 2010
VL 114
IS 44
BP 18903
EP 18910
DI 10.1021/jp104697u
PG 8
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 673ZU
UT WOS:000283703500022
ER
PT J
AU Liao, JF
Koch, V
Bzdak, A
AF Liao, Jinfeng
Koch, Volker
Bzdak, Adam
TI Charge separation effect in relativistic heavy ion collisions
SO PHYSICAL REVIEW C
LA English
DT Article
ID QUARK-GLUON PLASMA; QCD; VIOLATION; MATTER; EVENT; HOT
AB In this paper, we discuss alternative means of measuring the possible presence of local parity violation in relativistic heavy ion collisions. We focus on the phenomenon of charge separation and introduce the charged dipole vector (Q) over cap (c)(1), which will measure the charge separation on an event-by-event basis. Using Monte Carlo events, we demonstrate the method and its discriminating power. In particular we show that such an analysis will reveal the strength of the charge separation effect and its azimuthal correlation with the reaction plane. We further show that our proposed method may be able to distinguish between the actual charge separation effect and effects due to certain two-particle correlations. The connection to present measurements based on particle correlations is discussed.
C1 [Liao, Jinfeng; Koch, Volker; Bzdak, Adam] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
[Bzdak, Adam] Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland.
RP Liao, JF (reprint author), Lawrence Berkeley Natl Lab, Div Nucl Sci, MS70R0319,1 Cyclotron Rd, Berkeley, CA 94720 USA.
FU Office of Energy Research, Office of High Energy and Nuclear Physics,
Division of Nuclear Physics, US Department of Energy
[DE-AC02-05CH11231]; Polish Ministry of Science and Higher Education
[N202 125437]; Foundation for Polish Science
FX The authors are indebted to A. Poskanzer for very helpful discussions.
The authors also thank D. Kharzeev, R. Lacey, L. McLerran, E. Shuryak,
S. Voloshin, F. Wang, and N. Xu for discussions and communications. This
work was supported in part by the Director, Office of Energy Research,
Office of High Energy and Nuclear Physics, Division of Nuclear Physics,
US Department of Energy under Contract No. DE-AC02-05CH11231. A.B. is
also supported by the Polish Ministry of Science and Higher Education,
Grant No. N202 125437 and the Foundation for Polish Science (KOLUMB
program).
NR 49
TC 26
Z9 26
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD NOV 11
PY 2010
VL 82
IS 5
AR 054902
DI 10.1103/PhysRevC.82.054902
PG 11
WC Physics, Nuclear
SC Physics
GA 678QC
UT WOS:000284093900004
ER
PT J
AU Lee, Y
Seoung, DH
Bai, JM
Kao, CC
Parise, JB
Vogt, T
AF Lee, Yongjae
Seoung, Dong-Hoon
Bai, Jianming
Kao, Chi-Chang
Parise, John B.
Vogt, Thomas
TI Chemical and Hydrostatic Pressure in Natrolites: Pressure-Induced
Hydration of an Aluminogermanate Natrolite
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID ZEOLITES; PARANATROLITE; DIFFRACTION
AB The ambient structure and pressure-induced structural changes of a synthetic sodium aluminogermanate with a natrolite (NAT) framework topology (Na-AlGe-NAT) were characterized by using Rietveld refinements of high-resolution synchrotron X-ray powder diffraction data at ambient and high pressures. Unlike a previously established model for Na8Al8Ge12O40 center dot 8H(2)O based on a single-crystal study, the ambient structure of the Na-AlGe-NAT is found to adopt a monoclinic space group Cc (or Fd) with a ca. 6% expanded unit cell. The refined ambient structure of Na8Al8Ge12O40 center dot 12H(2)O indicates an increased water content of 50%, compared to the single-crystal structure. The unit-cell volume and water-content relationships observed between the to the Na-AlGe-NAT structures at ambient conditions with 8 and 12 H2O respectively seem to mirror the ones found under hydrostatic pressure between the Na8Al8Si12O40 center dot 8H(2)O and the parantrolite phase Na8Al8Si12O40 center dot 12H(2)O. Under hydrostatic pressures mediated by a pore-penetrating alcohol and water mixture, the monoclinic Na-AlGe-NAT exhibits a gradual decrease of the unit-cell volume up to ca. 2.0 GPa, where the unit-cell volume then contracts abruptly by ca. 4.6%. This is in marked contrast to what is observed in the Na-AlSi-NAT and Na-GaSi-NAT systems, where one observes a pressure-induced hydration and volume expansion due to the auxetic nature of the frameworks. Above 2 GPa, the monoclinic phase of Na-AlGe-NAT transforms into a tetragonal structure with the unit-cell composition of Na8Al8Ge12O40 center dot 16H(2)O. revealing pressure-induced hydration and a unit cell volume contraction. Unlike in the Na-Al,Si-paranatrolite phase. however, the sodium cations in the Na-AlGe-NAT maintain a 6-fold coordination in the monoclinic structure and only become 7-fold coordinated at higher pressures in the tetragonal structure. When comparing, the pressure-induced hydration in the observed natrolite-type zeolites, Na-AlGe-NAT appears to have a nonauxetic framework and reveals the highest onset pressure for complete superhydration.
C1 [Vogt, Thomas] Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA.
[Lee, Yongjae; Seoung, Dong-Hoon] Yonsei Univ, Dept Earth Syst Sci, Seoul 120749, South Korea.
[Bai, Jianming; Kao, Chi-Chang] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
[Parise, John B.] SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA.
RP Vogt, T (reprint author), Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA.
EM tvogt@mailbox.sc.edu
RI Vogt, Thomas /A-1562-2011; Bai, Jianming/O-5005-2015; Lee,
Yongjae/K-6566-2016
OI Vogt, Thomas /0000-0002-4731-2787;
FU Ministry of Education, Science and Technology (M EST) of the Korean
Government; BK21 program; Ministry of Science and Technology (MOST) of
the Korean Government; Pohang University of Science and Technology
(POSTECH); U.S. Department of Energy, Office of Basic Energy Sciences
FX This work was supported by the Global Research Lab Program of the
Ministry of Education, Science and Technology (M EST) of the Korean
Government. The authors thank Dr. Hyun-Hwi Lee for the operation of the
5A-HFMS beamline. D.H.S. thanks the support from the BK21 program to the
Institute of Earth, Atmosphere, and Astronomy at Yonsei University.
Experiments at PAL were supported in part by the Ministry of Science and
Technology (MOST) of the Korean Government and Pohang University of
Science and Technology (POSTECH). Research carried out in part at the
NSLS at BNL is supported by the U.S. Department of Energy, Office of
Basic Energy Sciences.
NR 30
TC 2
Z9 2
U1 1
U2 11
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD NOV 11
PY 2010
VL 114
IS 44
BP 18805
EP 18811
DI 10.1021/jp106964j
PG 7
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 673ZU
UT WOS:000283703500008
ER
PT J
AU Kerisit, S
Rosso, KM
Yang, ZG
Liu, J
AF Kerisit, Sebastien
Rosso, Kevin M.
Yang, Zhenguo
Liu, Jun
TI Computer Simulation of the Phase Stabilities of Lithiated TiO2
Polymorphs
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID NANOCRYSTALLINE RUTILE TIO2; LITHIUM-ION BATTERIES; AB-INITIO;
TITANIUM-DIOXIDE; ANATASE TIO2; ATOMISTIC SIMULATION; POLYMER
ELECTROLYTE; INSERTION REACTIONS; SOLID-SOLUTION; BROOKITE TIO2
AB The structure and phase stability of a series of titillated titania polymorphs were determined using energy minimizations of the periodic bulk crystal structures and both density functional theory (DFT) and it potential shell model. The DFT calculations were performed spin unrestricted following the linear combination of atomic orbital approach with the B3LYP exchange-correlation potential. For the potential shell model, a new set of force field parameters was derived, independently of the DFT calculations, to describe the lithium-lattice interactions. The eight polymorphs considered in this study are the rutile, anatase, brookite, TiO2-B, ramsdellite, hollandite, spinel, and hexagonal structures. The lithium to titanium ratio, x, of each Initiated titania polymorph was varied from 0.0 to 1.0 with 0.25 increments. The potential model predictions were found to he in good agreement with the structure and energetics of the lithiated titania polymorphs determined from DFT calculations, at all lithium contents. Both computational approaches indicate the following relationships. The naturally occurring titania polymorphs (i.e., rutile, anatase, brookite, and TiO2-B) were found to be the most stable of die eight phases in the absence of lithium. Anatase, brookite, and ramsdellite become energetically favored over ruble upon lithium insertion. The hexagonal and spinel polymorphs have stabilities approaching that of rutile with increasing lithium content and showed essentially equivalent total energies for x = 1.0. This prediction is consistent with numerous experimental studies, which have reported that ruffle electrodes, in particular those that consist of nanomaterials, can undergo phase transformations to the hexagonal or spinel structure upon lithium insertion. The calculations indicate that the main factors controlling the relative stability of the lithiated titania polymorphs are the lithium bonding environment, the arrangement of LiOx and TiO6 polyhedra, and the extent of lattice deformation upon lithiation.
C1 [Kerisit, Sebastien; Rosso, Kevin M.; Yang, Zhenguo; Liu, Jun] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Kerisit, S (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM sebastien.kerisit@pnl.gov
FU U.S. Department of Energy [DE-AC05-76RL01830]; U.S. Department of
Energy's Office of Biological and Environmental Research
FX This research was conducted under the Laboratory Directed Research and
Development Program at Pacific Northwest National Laboratory, a
multiprogram national laboratory operated by Battelle for the U.S.
Department of Energy under Contract DE-AC05-76RL01830. The computer
simulations were performed in part using the Molecular Science Computing
Facility in the William R. Wiley Environmental Molecular Sciences
Laboratory, a national scientific user facility sponsored by the U.S.
Department of Energy's Office of Biological and Environmental Research
and located at Pacific Northwest National Laboratory (PNNL).
NR 118
TC 13
Z9 13
U1 3
U2 59
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD NOV 11
PY 2010
VL 114
IS 44
BP 19096
EP 19107
DI 10.1021/jp103809s
PG 12
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 673ZU
UT WOS:000283703500046
ER
PT J
AU Yang, ZZ
Xu, T
Gao, SM
Welp, U
Kwok, WK
AF Yang, Zhenzhen
Xu, Tao
Gao, Shanmin
Welp, Ulrich
Kwok, Wai-Kwong
TI Enhanced Electron Collection in TiO2 Nanoparticle-Based Dye-Sensitized
Solar Cells by an Array of Metal Micropillars on a Planar Fluorinated
Tin Oxide Anode
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID POTENTIAL DISTRIBUTION; CONVERSION EFFICIENCY; CHARGE-COLLECTION;
TRANSPORT; RECOMBINATION; IMPEDANCE; PERFORMANCE; LIGHT; FILMS
AB Charge collection efficiency exhibits a strong influence on the overall efficiency of nanocrystalline dye-sensitized solar cells. It highly depends on the quality of the TiO2 nanoparticulate layer in the photoanode, and hence most efforts have been directed on the improvement and deliberate optimization of the quality the TiO2 nanocrystalline layer. In this work, we aim to reduce the electron collection distance between the place of origin in the TiO2 layer to the electron-collecting TCO anode as an alternative way to enhance the charge collection efficiency. We use an array of metal micropillars on fluorine-doped tin oxide (FTO) as the colleting anode. Under the same conditions, the Ni micropillar-on-FTO-based dye-sensitized solar cells (DSSCs) exhibit a remarkably enhanced current density, which is approximately 1.8 times greater compared with the bare FTO-based DSSCs. Electron transport was investigated using the electrochemical impedance spectroscopy technique. Our results reveal that the electron collection time in Ni micropillar-on-FTO-based DSSCs is much shorter than that of bare FTO-based DSSCs, indicating faster electron collection due to the Ni micropillars buried in TiO2 nanoparticulate layer that serve as electron transport shortcuts. As a result, the charge collection efficiency was enhanced by 15-20% with respect to that of the bare FTO-based DSSCs. Consequently, the overall energy conversion efficiency was found to increase from 2.6% in bare FTO-based DSSCs to 4.8% in Ni micropillar-on-FTO-based DSSCs for a 6 mu m-thick TiO2 NP film.
C1 [Yang, Zhenzhen; Xu, Tao; Gao, Shanmin] No Illinois Univ, Dept Chem & Biochem, De Kalb, IL 60115 USA.
[Yang, Zhenzhen; Xu, Tao; Welp, Ulrich; Kwok, Wai-Kwong] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Xu, T (reprint author), No Illinois Univ, Dept Chem & Biochem, De Kalb, IL 60115 USA.
EM txu@niu.edu
RI Yang, Zhenzhen/A-5904-2012
FU U.S. Department of Energy [DE-AC02-06CH11357]; NIU through InSET
FX We thank the U.S. Department of Energy for financial support under
Contract No. DE-AC02-06CH11357 and the NIU-Argonne Graduate NanoScience
Fellowship through InSET. We also acknowledge help from Dr. Ralu S.
Divan at Center for Nanoscale Materials, Argonne National Laboratory.
T.X. is grateful for the stimulating discussions with Dr. Alex B. F.
Martinson at the Materials Science Division, Argonne National
Laboratory.f
NR 39
TC 26
Z9 26
U1 0
U2 20
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD NOV 11
PY 2010
VL 114
IS 44
BP 19151
EP 19156
DI 10.1021/jp108761k
PG 6
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 673ZU
UT WOS:000283703500052
ER
PT J
AU Ko, H
Takei, K
Kapadia, R
Chuang, S
Fang, H
Leu, PW
Ganapathi, K
Plis, E
Kim, HS
Chen, SY
Madsen, M
Ford, AC
Chueh, YL
Krishna, S
Salahuddin, S
Javey, A
AF Ko, Hyunhyub
Takei, Kuniharu
Kapadia, Rehan
Chuang, Steven
Fang, Hui
Leu, Paul W.
Ganapathi, Kartik
Plis, Elena
Kim, Ha Sul
Chen, Szu-Ying
Madsen, Morten
Ford, Alexandra C.
Chueh, Yu-Lun
Krishna, Sanjay
Salahuddin, Sayeef
Javey, Ali
TI Ultrathin compound semiconductor on insulator layers for
high-performance nanoscale transistors
SO NATURE
LA English
DT Article
ID CIRCUITS; DENSITY; DEVICES; INAS
AB Over the past several years, the inherent scaling limitations of silicon (Si) electron devices have fuelled the exploration of alternative semiconductors, with high carrier mobility, to further enhance device performance(1-8). In particular, compound semiconductors heterogeneously integrated on Si substrates have been actively studied(7,9,10): such devices combine the high mobility of III-V semiconductors and the well established, low-cost processing of Si technology. This integration, however, presents significant challenges. Conventionally, heteroepitaxial growth of complex multilayers on Si has been explored(9,11-13)-but besides complexity, high defect densities and junction leakage currents present limitations in this approach. Motivated by this challenge, here we use an epitaxial transfer method for the integration of ultrathin layers of single-crystal InAs on Si/SiO(2) substrates. As a parallel with silicon-on-insulator (SOI) technology(14), we use 'XOI' to represent our compound semiconductoron-insulator platform. Through experiments and simulation, the electrical properties of InAs XOI transistors are explored, elucidating the critical role of quantum confinement in the transport properties of ultrathin XOI layers. Importantly, a high-quality InAs/dielectric interface is obtained by the use of a novel thermally grown interfacial InAsO(x) layer (similar to 1 nm thick). The fabricated field-effect transistors exhibit a peak transconductance of similar to 1.6 mS mu m(-1) at a drain-source voltage of 0.5 V, with an on/off current ratio of greater than 10,000.
C1 [Ko, Hyunhyub; Takei, Kuniharu; Kapadia, Rehan; Chuang, Steven; Fang, Hui; Leu, Paul W.; Madsen, Morten; Ford, Alexandra C.; Javey, Ali] Univ Calif Berkeley, Berkeley Sensor & Actuator Ctr, Berkeley, CA 94720 USA.
[Ko, Hyunhyub; Takei, Kuniharu; Kapadia, Rehan; Chuang, Steven; Fang, Hui; Leu, Paul W.; Madsen, Morten; Ford, Alexandra C.; Javey, Ali] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Chen, Szu-Ying; Chueh, Yu-Lun] Natl Tsing Hua Univ, Hsinchu 30013, Taiwan.
[Plis, Elena; Kim, Ha Sul; Krishna, Sanjay] Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87106 USA.
[Plis, Elena; Kim, Ha Sul; Krishna, Sanjay] Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA.
RP Javey, A (reprint author), Univ Calif Berkeley, Berkeley Sensor & Actuator Ctr, Berkeley, CA 94720 USA.
EM ajavey@eecs.berkeley.edu
RI Krishna, Sanjay /C-5766-2009; Ganapathi, Kartik/C-7631-2011; Madsen,
Morten/K-8597-2012; Kapadia, Rehan/B-4100-2013; Fang, Hui/I-8973-2014;
Leu, Paul/B-9989-2008; Javey, Ali/B-4818-2013; Ko, Hyunhyub/C-4848-2009;
Chueh, Yu-Lun/E-2053-2013;
OI Kapadia, Rehan/0000-0002-7611-0551; Fang, Hui/0000-0002-4651-9786; Leu,
Paul/0000-0002-1599-7144; Chueh, Yu-Lun/0000-0002-0155-9987; Madsen,
Morten/0000-0001-6503-0479
FU MARCO/MSD Focus Center; Intel Corporation; BSAC; LDRD from Lawrence
Berkeley National Laboratory; Sloan research fellowship; NSF; Sunchon
National University; Danish Research Council for Technology and
Production Sciences; AFOSR [FA9550-10-1-0113]; National Science Council,
Taiwan [NSC 98-2112-M-007-025-MY3]
FX This work was funded by the MARCO/MSD Focus Center, Intel Corporation
and BSAC. The materials characterization part of this work was partially
supported by an LDRD from Lawrence Berkeley National Laboratory. A.J.
acknowledges a Sloan research fellowship, an NSF CAREER award, and
support from the World Class University programme at Sunchon National
University. R.K. and M.M. acknowledge respectively an NSF graduate
fellowship and a postdoctoral fellowship from the Danish Research
Council for Technology and Production Sciences. S.K. acknowledges
support from AFOSR contract FA9550-10-1-0113. Y.-L.C. acknowledges
support from the National Science Council, Taiwan, through grant no. NSC
98-2112-M-007-025-MY3.
NR 29
TC 203
Z9 203
U1 14
U2 117
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 0028-0836
J9 NATURE
JI Nature
PD NOV 11
PY 2010
VL 468
IS 7321
BP 286
EP 289
DI 10.1038/nature09541
PG 4
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 678DG
UT WOS:000284051000047
PM 21068839
ER
PT J
AU von Hellermanna, MG
Barnsley, R
Biel, W
Delabie, E
Hawkes, N
Jaspers, R
Johnson, D
Klinkhamer, F
Lischtschenko, O
Marchuk, O
Schunke, B
Singh, MJ
Snijders, B
Summers, HP
Thomas, D
Tugarinov, S
Vasu, P
AF von Hellermanna, M. G.
Barnsley, R.
Biel, W.
Delabie, E.
Hawkes, N.
Jaspers, R.
Johnson, D.
Klinkhamer, F.
Lischtschenko, O.
Marchuk, O.
Schunke, B.
Singh, M. J.
Snijders, B.
Summers, H. P.
Thomas, D.
Tugarinov, S.
Vasu, P.
TI Active beam spectroscopy for ITER
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article; Proceedings Paper
CT 1st International Conference on Frontiers in Diagnostic Technologies
CY NOV 25-29, 2009
CL Frascati, ITALY
SP ENEA, INFN
DE Spectroscopy; CXRS; MSE; ITER
AB Since the first feasibility studies of active beam spectroscopy on ITER in 1995 the proposed diagnostic has developed into a well advanced and mature system. Substantial progress has been achieved on the physics side including comprehensive performance studies based on an advanced predictive code, which simulates active and passive features of the expected spectral ranges. The simulation has enabled detailed specifications for an optimized instrumentation and has helped to specify suitable diagnostic neutral beam parameters.
Four ITER partners share presently the task of developing a suite of ITER active beam diagnostics. which make use of the two 0.5 MeV/amu 18 MW heating neutral beams and a dedicated 0.1 MeV/amu, 3.6 MW diagnostic neutral beam. The IN ITER team is responsible for the DNB development and also for beam physics related aspects of the diagnostic. The RF will be responsible for edge CXRS system covering the outer region of the plasma (1 > r/a > 0.4) using an equatorial observation port, and the EU will develop the core CXRS system for the very core (0 < r/a < 0.7) using a top observation port. Thus optimum radial resolution is ensured for each system with better than a/30 resolution. Finally, the US will develop a dedicated MSE system making use of the HNBs and two equatorial ports. With appropriate modification, these systems could also potentially provide information on alpha particle slowing-down features..
On the engineering side, comprehensive preparations were made involving the development of an observation periscope, a neutron labyrinth optical system and design studies for remote maintenance including the exchange of the first mirror assembly, a critical issue for the operation of the CXRS diagnostic in the harsh ITER environment.
Additionally, an essential change of the orientation of the DNB injection angle and specification of suitable blanket aperture has been made to avoid trapped particle damage to the first wall. (C) 2010 Elsevier B.V. All rights reserved.
C1 [von Hellermanna, M. G.; Delabie, E.; Jaspers, R.; Lischtschenko, O.] EURATOM, FOM Inst Rijnhuizen, NL-3430 BE Nieuwegein, Netherlands.
[Barnsley, R.; Schunke, B.; Thomas, D.] ITER Org, F-13108 St Paul Les Durance, Cadarache, France.
[Biel, W.; Marchuk, O.] Forschungszentrum Julich, EURATOM Assoc, Inst Energieforsch, D-52425 Julich, Germany.
[Hawkes, N.; Summers, H. P.] EURATOM, Culham Ctr Fus Energy, Culham OX14 3DB, England.
[Johnson, D.] Princeton Plasma Phys Lab, Princeton, NJ 08548 USA.
[Klinkhamer, F.; Snijders, B.] TNO Sci & Ind, NL-2628 CK Delft, Netherlands.
[Singh, M. J.; Vasu, P.] Inst Plasma Res, Gandhinagar 384828, Gujarat, India.
[Tugarinov, S.] TRINITI Troitsk, Troitsk 142092, Moscow Region, Russia.
RP von Hellermanna, MG (reprint author), EURATOM, FOM Inst Rijnhuizen, NL-3430 BE Nieuwegein, Netherlands.
EM mgvh@jet.uk
NR 10
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U1 0
U2 6
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD NOV 11
PY 2010
VL 623
IS 2
BP 720
EP 725
DI 10.1016/j.nima.2010.04.011
PG 6
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 681TV
UT WOS:000284343600019
ER
PT J
AU Sfeir, MY
Misewich, JA
Rosenblatt, S
Wu, Y
Voisin, C
Yan, HG
Berciaud, S
Heinz, TF
Chandra, B
Caldwell, R
Shan, YY
Hone, J
Carr, GL
AF Sfeir, Matthew Y.
Misewich, James A.
Rosenblatt, Sami
Wu, Yang
Voisin, Christophe
Yan, Hugen
Berciaud, Stephane
Heinz, Tony F.
Chandra, Bhupesh
Caldwell, Robert
Shan, Yuyao
Hone, James
Carr, G. L.
TI Infrared spectra of individual semiconducting single-walled carbon
nanotubes: Testing the scaling of transition energies for large diameter
nanotubes
SO PHYSICAL REVIEW B
LA English
DT Article
ID RAMAN-SCATTERING; EXCITATIONS; EXCITONS
AB We have measured the low-energy excitonic transitions of chiral assigned individual large-diameter semiconducting single-walled nanotubes using a high-resolution Fourier transform photoconductivity technique. When photoconductivity is complemented by Rayleigh scattering spectroscopy, as many as five optical transitions can be identified on the same individual nanotube over an energy range of 0.3-2.7 eV. We find that well-established energy scaling relations developed for nanotubes of smaller diameter are not consistent with the measured low-energy transitions in large (1.8-2.3 nm) diameter nanotubes.
C1 [Sfeir, Matthew Y.; Misewich, James A.; Carr, G. L.] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
[Rosenblatt, Sami; Wu, Yang; Voisin, Christophe; Yan, Hugen; Berciaud, Stephane; Heinz, Tony F.] Columbia Univ, Dept Phys & Elect Engn, New York, NY 10027 USA.
[Chandra, Bhupesh; Caldwell, Robert; Shan, Yuyao; Hone, James] Columbia Univ, Dept Mech Engn, New York, NY 10027 USA.
RP Misewich, JA (reprint author), Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
EM misewich@bnl.gov
RI bartelsdoe, ludwig/F-8008-2011; Yan, Hugen/G-1642-2012; BERCIAUD,
Stephane/B-5257-2015; Hone, James/E-1879-2011; Heinz, Tony/K-7797-2015;
OI BERCIAUD, Stephane/0000-0002-5753-3671; Hone, James/0000-0002-8084-3301;
Heinz, Tony/0000-0003-1365-9464; Sfeir, Matthew/0000-0001-5619-5722
FU U.S. Department of Energy (DOE) [DE-AC02-98CH10886]; DOE
[DE-FG02-03ER15463]; Nanoscale Science and Engineering Initiative of the
NSF [CHE-06-41523, ECS-05-07111]; Nanoelectronics Research Initiative
(NRI) of the Semiconductor Research Corporation; New York State Office
of Science, Technology, and Academic Research (NYSTAR); National
Synchrotron Light Source; Center for Synchrotron Biosciences, Case
Western Reserve University [P41-EB-01979]; National Institute for
Biomedical Imaging and Bioengineering
FX We thank Mark Hybertsen, Deborah Prezzi, and C. Kane for valuable
discussion and R. Smith for technical assistance on the beamline. This
manuscript has been authored by employees of Brookhaven Science
Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S.
Department of Energy (DOE). Research at Columbia University was
supported by the DOE under Grant No. DE-FG02-03ER15463, the Nanoscale
Science and Engineering Initiative of the NSF under Awards No.
CHE-06-41523 and No. ECS-05-07111, by the Nanoelectronics Research
Initiative (NRI) of the Semiconductor Research Corporation, and by the
New York State Office of Science, Technology, and Academic Research
(NYSTAR). The synchrotron studies were supported by the National
Synchrotron Light Source and the Center for Synchrotron Biosciences,
Case Western Reserve University, under Grant No. P41-EB-01979 with the
National Institute for Biomedical Imaging and Bioengineering.
NR 30
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U1 0
U2 16
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 11
PY 2010
VL 82
IS 19
AR 195424
DI 10.1103/PhysRevB.82.195424
PG 5
WC Physics, Condensed Matter
SC Physics
GA 678PC
UT WOS:000284090600007
ER
PT J
AU Stoitsov, M
Kortelainen, M
Bogner, SK
Duguet, T
Furnstahl, RJ
Gebremariam, B
Schunck, N
AF Stoitsov, M.
Kortelainen, M.
Bogner, S. K.
Duguet, T.
Furnstahl, R. J.
Gebremariam, B.
Schunck, N.
TI Microscopically based energy density functionals for nuclei using the
density matrix expansion: Implementation and pre-optimization
SO PHYSICAL REVIEW C
LA English
DT Article
ID LOW-MOMENTUM INTERACTIONS; HARTREE-FOCK CALCULATIONS; DYNAMICS; MATTER
AB In a recent series of articles, Gebremariam, Bogner, and Duguet derived a microscopically based nuclear energy density functional by applying the density matrix expansion (DME) to the Hartree-Fock energy obtained from chiral effective field theory two- and three-nucleon interactions. Owing to the structure of the chiral interactions, each coupling in the DME functional is given as the sum of a coupling constant arising from zero-range contact interactions and a coupling function of the density arising from the finite-range pion exchanges. Because the contact contributions have essentially the same structure as those entering empirical Skyrme functionals, a microscopically guided Skyrme phenomenology has been suggested in which the contact terms in the DME functional are released for optimization to finite-density observables to capture short-range correlation energy contributions from beyond Hartree-Fock. The present article is the first attempt to assess the ability of the newly suggested DME functional, which has a much richer set of density dependencies than traditional Skyrme functionals, to generate sensible and stable results for nuclear applications. The results of the first proof-of-principle calculations are given, and numerous practical issues related to the implementation of the new functional in existing Skyrme codes are discussed. Using a restricted singular value decomposition optimization procedure, it is found that the new DME functional gives numerically stable results and exhibits a small but systematic reduction of our test chi(2) function compared to standard Skyrme functionals, thus justifying its suitability for future global optimizations and large-scale calculations.
C1 [Stoitsov, M.; Kortelainen, M.; Schunck, N.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Stoitsov, M.; Kortelainen, M.; Schunck, N.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
[Bogner, S. K.; Duguet, T.; Gebremariam, B.] Michigan State Univ, Natl Superconducting Cyclotron Lab, Cyclotron Lab 1, E Lansing, MI 48824 USA.
[Bogner, S. K.; Duguet, T.; Gebremariam, B.] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.
[Duguet, T.] CEA, Ctr Saclay, IRFU Serv Phys Nucl, F-91191 Gif Sur Yvette, France.
[Furnstahl, R. J.] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
RP Stoitsov, M (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
EM stoitsovmv@ornl.gov; kortelainene@ornl.gov; bogner@nscl.msu.edu;
thomas.duguet@cea.fr; furnstahl.1@osu.edu; gebremar@nscl.msu.edu;
schuncknf@ornl.gov
OI Furnstahl, Richard/0000-0002-3483-333X; Schunck,
Nicolas/0000-0002-9203-6849
FU Office of Nuclear Physics, US Department of Energy [DE-FC02-09ER41583,
DE-FG02-96ER40963, DE-FC02-07ER41457, DE-FG02-07ER41529,
DE-FG0587ER40361, DE-FC02-09ER41585]; National Science Foundation
[PHY-0653312, PHY-0758125]; National Center for Computational Sciences
(NCCS); National Institute for Computational Sciences (NICS) at Oak
Ridge National Laboratory
FX We thank W. Nazarewicz, T. Papenbrock, and T. Lesinski for useful
discussions. This work was supported by the Office of Nuclear Physics,
US Department of Energy, under Contracts No. DE-FC02-09ER41583 (UNEDF
Sci-DAC Collaboration), No. DE-FG02-96ER40963, No. DE-FC02-07ER41457,
No. DE-FG02-07ER41529 (University of Tennessee), No. DE-FG0587ER40361
(Joint Institute for Heavy Ion Research), and No. DE-FC02-09ER41585
(Michigan State University) and the National Science Foundation under
Grants No. PHY-0653312 and No. PHY-0758125. Computational resources were
provided through an INCITE grant "Computational Nuclear Structure" by
the National Center for Computational Sciences (NCCS) and the National
Institute for Computational Sciences (NICS) at Oak Ridge National
Laboratory.
NR 45
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U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD NOV 11
PY 2010
VL 82
IS 5
AR 054307
DI 10.1103/PhysRevC.82.054307
PG 15
WC Physics, Nuclear
SC Physics
GA 678QC
UT WOS:000284093900002
ER
PT J
AU Babich, R
Brannick, J
Brower, RC
Clark, MA
Manteuffel, TA
McCormick, SF
Osborn, JC
Rebbi, C
AF Babich, R.
Brannick, J.
Brower, R. C.
Clark, M. A.
Manteuffel, T. A.
McCormick, S. F.
Osborn, J. C.
Rebbi, C.
TI Adaptive Multigrid Algorithm for the Lattice Wilson-Dirac Operator
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
AB We present an adaptive multigrid solver for application to the non-Hermitian Wilson-Dirac system of QCD. The key components leading to the success of our proposed algorithm are the use of an adaptive projection onto coarse grids that preserves the near null space of the system matrix together with a simplified form of the correction based on the so-called gamma(5)-Hermitian symmetry of the Dirac operator. We demonstrate that the algorithm nearly eliminates critical slowing down in the chiral limit and that it has weak dependence on the lattice volume.
C1 [Babich, R.; Brower, R. C.; Rebbi, C.] Boston Univ, Ctr Computat Sci, Boston, MA 02215 USA.
[Babich, R.; Brower, R. C.; Rebbi, C.] Boston Univ, Dept Phys, Boston, MA 02215 USA.
[Brannick, J.] Penn State Univ, Dept Math, University Pk, PA 16802 USA.
[Clark, M. A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Manteuffel, T. A.; McCormick, S. F.] Univ Colorado, Dept Appl Math, Boulder, CO 80309 USA.
[Osborn, J. C.] Argonne Natl Lab, Argonne Leadership Comp Facil, Argonne, IL 60439 USA.
RP Babich, R (reprint author), Boston Univ, Ctr Computat Sci, 3 Cummington St, Boston, MA 02215 USA.
FU DOE [DE-FG02-91ER40676, DE-FC02-06ER41440, DE-FG02-03ER25574,
DE-FC02-06ER25784]; Lawrence Livermore National Laboratory [B568677,
B574163, B568399]; NSF [PHY-0427646, OCI-0749202, OCI-0749317,
OCI-0749300, DGE-0221680, DMS-0810982]
FX This research was supported under DOE grants DE-FG02-91ER40676,
DE-FC02-06ER41440, DE-FG02-03ER25574 and DE-FC02-06ER25784; Lawrence
Livermore National Laboratory contracts B568677, B574163 and B568399;
and NSF grants PHY-0427646, OCI-0749202, OCI-0749317, OCI-0749300,
DGE-0221680 and DMS-0810982.
NR 8
TC 23
Z9 23
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 11
PY 2010
VL 105
IS 20
AR 201602
DI 10.1103/PhysRevLett.105.201602
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 678RU
UT WOS:000284098700001
PM 21231217
ER
PT J
AU Boer, D
Kang, ZB
Vogelsang, W
Yuan, F
AF Boer, Daniel
Kang, Zhong-Bo
Vogelsang, Werner
Yuan, Feng
TI Test of the Universality of Naive-Time-Reversal-Odd Fragmentation
Functions
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID DEEP-INELASTIC SCATTERING; FINAL-STATE INTERACTIONS; SINGLE-SPIN
ASYMMETRIES; PARTON DISTRIBUTIONS; HYPERON POLARIZATION; DRELL-YAN;
ORDER 1/Q; LEPTOPRODUCTION; PROTONS; GAUGE
AB We investigate the "spontaneous'' hyperon transverse polarization in e(+)e(-) annihilation and semi-inclusive deep inelastic scattering processes as a test of the universality of the naive-time-reversal-odd transverse momentum dependent fragmentation functions. We find that universality implies definite sign relations among various observables. This provides a unique opportunity to study initial or final state interaction effects in the fragmentation process and test the associated factorization.
C1 [Boer, Daniel] Univ Groningen, Theory Grp, KVI, NL-9747 AA Groningen, Netherlands.
[Kang, Zhong-Bo; Yuan, Feng] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA.
[Vogelsang, Werner] Univ Tubingen, Inst Theoret Phys, D-72076 Tubingen, Germany.
[Yuan, Feng] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Boer, D (reprint author), Univ Groningen, Theory Grp, KVI, Zernikelaan 25, NL-9747 AA Groningen, Netherlands.
RI Yuan, Feng/N-4175-2013; Kang, Zhongbo/P-3645-2014; Boer,
Daniel/B-3493-2015
OI Boer, Daniel/0000-0003-0985-4662
FU U.S. Department of Energy [DE-AC02-05CH11231, DE-AC02-98CH10886]
FX This work was supported in part by the U.S. Department of Energy under
Grant No. DE-AC02-05CH11231 (F. Y.) and Contract No. DE-AC02-98CH10886
(Z. K., F. Y. and W. V.).
NR 41
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U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 11
PY 2010
VL 105
IS 20
AR 202001
DI 10.1103/PhysRevLett.105.202001
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 678RU
UT WOS:000284098700002
PM 21231221
ER
PT J
AU Dmowski, W
Iwashita, T
Chuang, CP
Almer, J
Egami, T
AF Dmowski, W.
Iwashita, T.
Chuang, C-P
Almer, J.
Egami, T.
TI Elastic Heterogeneity in Metallic Glasses
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID DEFORMATION; ANISOTROPY
AB When a stress is applied on a metallic glass it deforms following Hook's law. Therefore it may appear obvious that a metallic glass deforms elastically. Using x-ray diffraction and anisotropic pair-density function analysis we show that only about 3 4 in volume fraction of metallic glasses deforms elastically, whereas the rest of the volume is anelastic and in the experimental time scale deform without resistance. We suggest that this anelastic portion represents residual liquidity in the glassy state. Many theories, such as the free-volume theory, assume the density of defects in the glassy state to be of the order of 1%, but this result shows that it is as much as a quarter.
C1 [Dmowski, W.; Chuang, C-P; Egami, T.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
[Iwashita, T.; Egami, T.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Almer, J.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Egami, T.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Dmowski, W (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
RI Iwashita, Takuya/D-2724-2009
FU Division of Materials Science and Engineering, Office of Basic Energy
Sciences, Department of Energy [DE-AC05-00OR-22725]; U.S. Department of
Energy (DOE), Office of Science [DE-AC02-06CH11357]
FX We acknowledge Professor P. K. Liaw for the use of his laboratory to
prepare the samples. This work was supported by the Division of
Materials Science and Engineering, Office of Basic Energy Sciences,
Department of Energy, through Contract No. DE-AC05-00OR-22725. Use of
the Advanced Photon Source is supported by the U.S. Department of Energy
(DOE), Office of Science, under Contract No. DE-AC02-06CH11357.
NR 20
TC 128
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U1 9
U2 96
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 11
PY 2010
VL 105
IS 20
AR 205502
DI 10.1103/PhysRevLett.105.205502
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 678RU
UT WOS:000284098700007
PM 21231246
ER
PT J
AU Grierson, BA
Mauel, ME
Worstell, MW
Klassen, M
AF Grierson, B. A.
Mauel, M. E.
Worstell, M. W.
Klassen, M.
TI Transport Induced by Large Scale Convective Structures in a
Dipole-Confined Plasma
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID ELECTROSTATIC TURBULENCE; INSTABILITY; DIFFUSION
AB Convective structures characterized by E x B motion are observed in a dipole-confined plasma. Particle transport rates are calculated from density dynamics obtained from multipoint measurements and the reconstructed electrostatic potential. The calculated transport rates determined from the large-scale dynamics and local probe measurements agree in magnitude, show intermittency, and indicate that the particle transport is dominated by large-scale convective structures.
C1 [Grierson, B. A.] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
[Mauel, M. E.; Worstell, M. W.; Klassen, M.] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA.
RP Grierson, BA (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
EM bgriers@pppl.gov
OI Mauel, Michael/0000-0003-2490-7478
FU U.S. DOE [DE-FG02-00ER54585]
FX This work was supported by U.S. DOE Grant No. DE-FG02-00ER54585. B. A.
G. gratefully acknowledges useful discussions with R. Nazikian, K. H.
Burrell, and the LDX team.
NR 23
TC 4
Z9 4
U1 2
U2 5
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 11
PY 2010
VL 105
IS 20
AR 205004
DI 10.1103/PhysRevLett.105.205004
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 678RU
UT WOS:000284098700005
PM 21231242
ER
PT J
AU Zhang, Y
Vishwanath, A
AF Zhang, Yi
Vishwanath, Ashvin
TI Anomalous Aharonov-Bohm Conductance Oscillations from Topological
Insulator Surface States
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID NORMAL-METAL RINGS; INTERFERENCE; PERIODICITY; H/E
AB We study Aharonov-Bohm (AB) conductance oscillations arising from the surface states of a topological insulator nanowire, when a magnetic field is applied along its length. With strong surface disorder, these oscillations are predicted to have a component with anomalous period Phi(0) hc/e, twice the conventional period. The conductance maxima are achieved at odd multiples of 1/2 Phi(0), implying that a pi AB phase for electrons strengthens the metallic nature of surface states. This effect is special to topological insulators, and serves as a defining transport property. A key ingredient, the surface curvature induced Berry phase, is emphasized here. We discuss similarities and differences from recent experiments on Bi2Se3 nanoribbons, and optimal conditions for observing this effect.
C1 [Zhang, Yi; Vishwanath, Ashvin] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Zhang, Yi; Vishwanath, Ashvin] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Zhang, Y (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RI Zhang, Yi/I-3138-2013
FU DOE [DE-AC02-05CH11231]
FX We acknowledge insightful discussions with H. Mathur, D. Carpentier, J.
Moore, and G. Paulin, and DOE Grant No. DE-AC02-05CH11231 for support.
In [17], broadly similar results are obtained using a 2D Dirac
treatment, although, in contrast to our 3D model calculation, surface
curvature Berry phase and finite T breaking at pi flux are not included
in that approximation.
NR 23
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U1 4
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PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 11
PY 2010
VL 105
IS 20
AR 206601
DI 10.1103/PhysRevLett.105.206601
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 678RU
UT WOS:000284098700009
PM 21231253
ER
PT J
AU Zeitlin, C
Boynton, W
Mitrofanov, I
Hassler, D
Atwell, W
Cleghorn, TF
Cucinotta, FA
Dayeh, M
Desai, M
Guetersloh, SB
Kozarev, K
Lee, KT
Pinsky, L
Saganti, P
Schwadron, NA
Turner, R
AF Zeitlin, C.
Boynton, W.
Mitrofanov, I.
Hassler, D.
Atwell, W.
Cleghorn, T. F.
Cucinotta, F. A.
Dayeh, M.
Desai, M.
Guetersloh, S. B.
Kozarev, K.
Lee, K. T.
Pinsky, L.
Saganti, P.
Schwadron, N. A.
Turner, R.
TI Mars Odyssey measurements of galactic cosmic rays and solar particles in
Mars orbit, 2002-2008
SO SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS
LA English
DT Article
ID RADIATION ENVIRONMENT EXPERIMENT; SPECTRA; SPECTROMETER; MISSIONS;
DEPOSITS; PROTON; IONS
AB The instrument payload aboard the 2001 Mars Odyssey orbiter includes several instruments that are sensitive to energetic charged particles from the galactic cosmic rays (GCR) and solar particle events (SPE). The Martian Radiation Environment Experiment (MARIE) was a dedicated energetic charged particle spectrometer, but it ceased functioning during the large solar storm of October/November 2003. Data from two other Odyssey instruments are used here: the Gamma Ray Spectrometer and the scintillator component of the High Energy Neutron Detector. Though not primarily designed to measure energetic charged particles, both systems are sensitive to them, and several years of data are available from both. Using the MARIE data for calibration of the other systems, count rates can be normalized (with significant uncertainties) to absolute fluxes of both GCR and solar energetic particles (SEP). The data, which cover the time span from early 2002 through the end of 2007, clearly show the solar cycle-dependent modulation of the GCR starting in 2004. Many SPEs were recorded as well and are cataloged here. Threshold energies were relatively high, ranging from 16 MeV in the most sensitive channel to 42 MeV. These thresholds are not optimal for detailed studies of SEPs, but this is the range of interest for calculations of dose and dose equivalent, pertinent to human flight, and covering that range was the original motivation for MARIE. The data are available on request and are potentially of use for the Earth-Moon-Mars Radiation Environment Module collaboration and other heliospheric modeling projects.
C1 [Zeitlin, C.; Hassler, D.] SW Res Inst, Boulder, CO USA.
[Zeitlin, C.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Boynton, W.] Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA.
[Mitrofanov, I.] Space Res Inst, Moscow, Russia.
[Atwell, W.] Boeing Co, Houston, TX USA.
[Cleghorn, T. F.; Cucinotta, F. A.; Lee, K. T.] NASA, Lyndon B Johnson Space Ctr, Houston, TX 77058 USA.
[Dayeh, M.; Desai, M.] SW Res Inst, San Antonio, TX USA.
[Guetersloh, S. B.] Texas A&M Univ, Dept Nucl Engn, College Stn, TX 77843 USA.
[Kozarev, K.; Schwadron, N. A.] Boston Univ, Dept Astron, Boston, MA 02215 USA.
[Pinsky, L.] Univ Houston, Dept Phys, Houston, TX USA.
[Saganti, P.] Prairie View A&M Univ, Dept Phys, Prairie View, TX USA.
[Turner, R.] Analyt Serv Inc, Arlington, VA USA.
RP Zeitlin, C (reprint author), SW Res Inst, Boulder, CO USA.
FU NASA [NNH05AA471, NNX07AC12G]
FX We express our profound thanks to the many people who supported this
effort over many years, both on the individual instrument teams for
MARIE, GRS, and HEND, and on the 2001 Mars Odyssey project. Odyssey has
had a remarkably long and successful mission thanks in large part to the
management team, which over the years has included Robert Gibbs, Robert
Mase, Gaylon McSmith, Phillip Varghese, Steve Saunders, Jeffrey Plaut,
and David Senske. And of course this work would not have been possible
without the tireless efforts of the original MARIE Principal
Investigator, the late Gautam Badhwar. He is greatly missed. This work
was supported at LBNL by NASA grant NNH05AA471 and at Southwest Research
Institute by NASA grant NNX07AC12G.
NR 28
TC 6
Z9 6
U1 1
U2 10
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 1542-7390
J9 SPACE WEATHER
JI Space Weather
PD NOV 11
PY 2010
VL 8
AR S00E06
DI 10.1029/2009SW000563
PG 26
WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
Atmospheric Sciences
SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
Atmospheric Sciences
GA 680IY
UT WOS:000284226800001
ER
PT J
AU Reifel, KM
Swan, BK
Ehrhardt, CJ
Jones, BH
AF Reifel, Kristen M.
Swan, Brandon K.
Ehrhardt, Christopher J.
Jones, Burton H.
TI Optical characterization of a precipitation event in a moderately
hypersaline lake
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID DISSOLVED ORGANIC-MATTER; LIGHT-SCATTERING; SALTON-SEA; PARTICULATE;
ABSORPTION; WATERS; COLOR; SHAPE
AB The role of mineral precipitation events in creating large patches of bright green water in the Salton Sea was investigated by comparing in situ inherent optical properties (IOPs) and constituent concentrations within and outside a green water region. While absorption was similar in both regions, scatter and backscatter were similar to 2 and 3 times higher in green water, respectively. Ratios of scatter to absorption and backscatter to absorption had nearly identical spectral shapes but much higher magnitudes within green water. CIE chromaticity values were similar between stations, but luminance was 2.4 times greater in green water. Therefore, differences in observed water color were mostly due to increased brightness within green water. Further analyses of IOPs indicated that particles were small at both stations (average diameter similar to 0.3 mu m), but a larger proportion of particles present in green water were inorganic. Scanning electron microscopy analysis revealed the presence of small (up to 5 mu m) particles consistent with gypsum. Because precipitated minerals only increase backscatter and do not by themselves affect water color, simple reflectance ratios will not always detect these events. Therefore, the magnitude of reflectance must be incorporated into analyses of precipitation events. Citation: Reifel, K. M., B. K. Swan, C. J. Ehrhardt, and B. H. Jones (2010), Optical characterization of a precipitation event in a moderately hypersaline lake, Geophys. Res. Lett., 37, L21603, doi: 10.1029/2010GL044949.
C1 [Reifel, Kristen M.; Jones, Burton H.] Univ So Calif, Dept Biol Sci, Los Angeles, CA 90089 USA.
[Ehrhardt, Christopher J.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Swan, Brandon K.] Bigelow Lab Ocean Sci, Boothbay Harbor, ME 04575 USA.
RP Reifel, KM (reprint author), Univ So Calif, Dept Biol Sci, 3616 Trousdale Pkwy, Los Angeles, CA 90089 USA.
EM kmreifel@gmail.com
RI Reifel, Kristen/J-7052-2014;
OI Reifel, Kristen/0000-0002-2394-9185; Ehrhardt,
Christopher/0000-0002-4909-0532
FU NSF [MCB-0604191]; CMIS California NASA; NASA ESS; Philip and Aida Siff
Graduate Fellowship
FX We thank B. Brinegar of Environmental Recovery Solutions for providing
boat logistics, I. Cetinic for assisting with analysis of optical data,
E. Boss for use of his BB9 and providing Matlab code, and K. Randolph
for running Hydrolight models. We thank D. L. Valentine for providing
partial financial support (NSF grant MCB-0604191). This project was
funded in part by a CMIS California NASA Space Grant to B. K. S.
Additional support was provided by a NASA ESS fellowship awarded to K.
M. R. and a Philip and Aida Siff Graduate Fellowship awarded to B. K. S.
Comments and suggestions by T.J. Swift, E. Boss, and an anonymous
reviewer greatly improved this manuscript.
NR 25
TC 0
Z9 0
U1 0
U2 3
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD NOV 10
PY 2010
VL 37
AR L21603
DI 10.1029/2010GL044949
PG 5
WC Geosciences, Multidisciplinary
SC Geology
GA 680FK
UT WOS:000284217600003
ER
PT J
AU Brodsky, SJ
De Teramond, G
Deur, A
AF Brodsky, Stanley J.
De Teramond, Guy
Deur, Alexandre
TI AdS/QCD, LIGHT-FRONT HOLOGRAPHY, AND THE NONPERTURBATIVE RUNNING
COUPLING
SO INTERNATIONAL JOURNAL OF MODERN PHYSICS A
LA English
DT Article; Proceedings Paper
CT International Workshop on Strong Coupling Gauge Theories in the LHC Era
(SCGT 09)
CY DEC 08-11, 2009
CL Nagoya Univ, Nagoya, JAPAN
HO Nagoya Univ
DE AdS/CFT correspondence; AdS/QCD; light-front QCD; light-front
quantization; nonperturbative QCD coupling
ID DEEP-INELASTIC SCATTERING; QUANTUM CHROMODYNAMICS; EFFECTIVE CHARGES;
SPIN ASYMMETRIES; QCD; BARYONS; DISTRIBUTIONS; CONSTANT; NUCLEON; PROTON
AB The combination of Anti-de Sitter space (AdS) methods with light-front (LF) holography provides a remarkably accurate first approximation for the spectra and wavefunctions of meson and baryon light-quark bound states. The resulting bound-state Hamiltonian equation of motion in QCD leads to relativistic light-front wave equations in terms of an invariant impact variable zeta which measures the separation of the quark and gluonic constituents within the hadron at equal light-front time. These equations of motion in physical space-time are equivalent to the equations of motion which describe the propagation of spin-J modes in anti-de Sitter (AdS) space. The eigenvalues give the hadronic spectrum, and the eigenmodes represent the probability distributions of the hadronic constituents at a given scale. A positive-sign confining dilaton background modifying AdS space gives a very good account of meson and baryon spectroscopy and form factors. The light-front holographic mapping of this model also leads to a non-perturbative effective coupling alpha(AdS)(s) (Q(2)) which agrees with the effective charge defined by the Bjorken sum rule and lattice simulations. It displays a transition from perturbative to nonperturbative conformal regimes at a momentum scale similar to 1 GeV. The resulting beta-function appears to capture the essential characteristics of the full beta-function of QCD, thus giving further support to the application of the gauge/gravity duality to the confining dynamics of strongly coupled QCD.
C1 [Brodsky, Stanley J.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94309 USA.
[De Teramond, Guy] Univ Costa Rica, San Jose, Costa Rica.
[Deur, Alexandre] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
RP Brodsky, SJ (reprint author), Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94309 USA.
EM sjbth@slac.stanford.edu; gdt@asterix.crnet.cr; deurpam@jlab.org
NR 78
TC 1
Z9 1
U1 0
U2 0
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 0217-751X
J9 INT J MOD PHYS A
JI Int. J. Mod. Phys. A
PD NOV 10
PY 2010
VL 25
IS 27-28
SI SI
BP 5009
EP 5024
DI 10.1142/S0217751X10050822
PG 16
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 676SE
UT WOS:000283937900001
ER
PT J
AU Graesser, ML
Kitano, R
Kurachi, M
AF Graesser, Michael L.
Kitano, Ryuichiro
Kurachi, Masafumi
TI HIGGSINOLESS SUPERSYMMETRY AND HIDDEN GRAVITY
SO INTERNATIONAL JOURNAL OF MODERN PHYSICS A
LA English
DT Article; Proceedings Paper
CT International Workshop on Strong Coupling Gauge Theories in the LHC Era
(SCGT 09)
CY DEC 08-11, 2009
CL Nagoya Univ, Nagoya, JAPAN
HO Nagoya Univ
ID ELECTROWEAK SYMMETRY-BREAKING; NON-LINEAR REALIZATIONS; LOCAL SYMMETRY;
BROKEN SUPERSYMMETRY; GAUGE BOSON; DIMENSIONS; PHENOMENOLOGY;
SUPERGRAVITY; LAGRANGIANS; MILLIMETER
AB We present a simple formulation of non-linear supersymmetry where superfields and partnerless fields can coexist. Using this formalism, we propose a supersymmetric Standard Model without the Higgsino as an effective model for the TeV-scale supersymmetry breaking scenario. We also consider an application of the Hidden Local Symmetry in non-linear supersymmetry, where we can naturally incorporate a spin-two resonance into the theory in a manifestly supersymmetric way. Possible signatures at the LHC experiments are discussed.
C1 [Graesser, Michael L.] Los Alamos Natl Lab, Theoret Div T2, Los Alamos, NM 87545 USA.
[Kitano, Ryuichiro; Kurachi, Masafumi] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan.
RP Graesser, ML (reprint author), Los Alamos Natl Lab, Theoret Div T2, Los Alamos, NM 87545 USA.
NR 59
TC 0
Z9 0
U1 0
U2 0
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 0217-751X
J9 INT J MOD PHYS A
JI Int. J. Mod. Phys. A
PD NOV 10
PY 2010
VL 25
IS 27-28
SI SI
BP 5183
EP 5195
DI 10.1142/S0217751X10050950
PG 13
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 676SE
UT WOS:000283937900014
ER
PT J
AU Zhang, AP
Lu, FC
Liu, CF
Sun, RC
AF Zhang, Aiping
Lu, Fachuang
Liu, Chuanfu
Sun, Run-Cang
TI Isolation and Characterization of Lignins from Eucalyptus tereticornis
(12ABL)
SO JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
LA English
DT Article
DE Eucalyptus; lignin; isolation; characterization; (31)P NMR; HSQC
ID CELLULOLYTIC ENZYME LIGNIN; WHEAT-STRAW LIGNIN; MILLED WOOD LIGNIN;
SOLUTION-STATE NMR; PLANT-CELL WALLS; QUANTITATIVE P-31; SPECTROSCOPY
AB A three-step sequential extraction precipitation method was used to isolate lignin from Eucalyptus tereticornis. The ball-milled eucalyptus was extracted with 96% dioxane, 50% dioxane, and 80% dioxane containing 1% NaOH at boiling temperature, consecutively resulting in solubilization of lignin and hemicelluloses. By precipitating such solutions into 70% aqueous ethanol, the hemicelluloses were removed substantially although there were still some carbohydrates left over, especially for lignin fraction extracted by 50% dioxane. Lignins dissolved in the 70% ethanol solutions were recovered via concentration and precipitation into acidified water. About 37% of the original lignin was released following such procedure whereas only 13.5% can be isolated by traditional milled wood lignin (MWL) method. The obtained lignin fractions were analyzed by high performance anion exchange chromatography (HPAEC) following acid hydrolysis for sugar composition of the contaminating carbohydrates and characterized by quantitative (31)P NMR as well as two-dimensional heteronuclear single-quantum coherence ((13)C-(1)H) NMR. The results showed that 96% aqueous dioxane extraction of ball-milled wood under conditions used in this study resulted in lignin preparation with very similar structures and sugar composition as traditional MWL. Therefore extracting ball-milled wood with 96% aqueous dioxane produced lignin in 33.6% yield, which makes it very attractive as an alternative to the traditional MWL method. However further extraction with 50% aqueous dioxane or 80% aqueous dioxane containing 1% NaOH gave just a little more lignins with different carbohydrate compositions from those in MWL. The eucalyptus lignins obtained were syringyl and guaiacyl type units. Lignin fraction obtained from 96% dioxane extraction was found to have more phenolic hydroxyl and less aliphatic hydroxyl than the other two preparations.
C1 [Lu, Fachuang] Univ Wisconsin, Dept Biochem, Madison, WI 53726 USA.
[Lu, Fachuang] Univ Wisconsin, Great Lakes Bioenergy Res Ctr, Madison, WI 53726 USA.
[Zhang, Aiping; Liu, Chuanfu; Sun, Run-Cang] S China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China.
[Sun, Run-Cang] Beijing Forestry Univ, Coll Mat Sci & Technol, Beijing 100083, Peoples R China.
[Zhang, Aiping] S China Agr Univ, Inst New Energy & New Mat, Guangzhou 510642, Guangdong, Peoples R China.
RP Lu, FC (reprint author), Univ Wisconsin, Dept Biochem, 1710 Univ Ave, Madison, WI 53726 USA.
EM fachuanglu@wisc.edu
OI Liu, Chuan-Fu/0000-0002-3151-7956
FU National Natural Science Foundation of China [30871994, 30972325,
30710103906]; Fundamental Research Funds for the Central Universities
[2009ZZ0024]; China Ministry of Education [111]; National Basic Research
Program of China [2010CB732201]; DOE Great Lakes Bioenergy Research
Center (DOE Office of Science) [BER DE-FC02-07ER64494]
FX The authors express their gratitude for the financial support from the
National Natural Science Foundation of China (No. 30871994, 30972325 and
30710103906), the Fundamental Research Funds for the Central
Universities (2009ZZ0024), China Ministry of Education (111) and
National Basic Research Program of China (2010CB732201). This work was
funded in part by the DOE Great Lakes Bioenergy Research Center (DOE
Office of Science BER DE-FC02-07ER64494).
NR 30
TC 14
Z9 15
U1 7
U2 44
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0021-8561
J9 J AGR FOOD CHEM
JI J. Agric. Food Chem.
PD NOV 10
PY 2010
VL 58
IS 21
BP 11287
EP 11293
DI 10.1021/jf103354x
PG 7
WC Agriculture, Multidisciplinary; Chemistry, Applied; Food Science &
Technology
SC Agriculture; Chemistry; Food Science & Technology
GA 672ZT
UT WOS:000283628000014
PM 20954709
ER
PT J
AU Abdo, AA
Ackermann, M
Ajello, M
Allafort, A
Atwood, WB
Baldini, L
Ballet, J
Barbiellini, G
Baring, MG
Bastieri, D
Baughman, BM
Bechtol, K
Bellazzini, R
Berenji, B
Bhat, PN
Blandford, RD
Bloom, ED
Bonamente, E
Borgland, AW
Bouvier, A
Brandt, TJ
Bregeon, J
Brez, A
Briggs, MS
Brigida, M
Bruel, P
Buehler, R
Burnett, TH
Buson, S
Caliandro, GA
Cameron, RA
Caraveo, PA
Carrigan, S
Casandjian, JM
Cavazzuti, E
Cecchi, C
Celik, O
Charles, E
Chekhtman, A
Chen, AW
Cheung, CC
Chiang, J
Ciprini, S
Claus, R
Cohen-Tanugi, J
Connaughton, V
Conrad, J
Costamante, L
Dermer, CD
de Angelis, A
de Palma, F
Digel, SW
Dingus, BL
Silva, EDE
Drell, PS
Dubois, R
Favuzzi, C
Fegan, SJ
Finke, J
Fortin, P
Fukazawa, Y
Funk, S
Fusco, P
Gargano, F
Gasparrini, D
Gehrels, N
Germani, S
Giglietto, N
Gilmore, RC
Giommi, P
Giordano, F
Giroletti, M
Glanzman, T
Godfrey, G
Granot, J
Greiner, J
Grenier, IA
Grove, JE
Guiriec, S
Gustafsson, M
Hadasch, D
Hayashida, M
Hays, E
Horan, D
Hughes, RE
Johannesson, G
Johnson, AS
Johnson, RP
Johnson, WN
Kamae, T
Katagiri, H
Kataoka, J
Knodlseder, J
Kocevski, D
Kuss, M
Lande, J
Latronico, L
Lee, SH
Garde, ML
Longo, F
Loparco, F
Lott, B
Lovellette, MN
Lubrano, P
Makeev, A
Mazziotta, N
McConville, W
McEnery, JE
McGlynn, S
Mehault, J
Meszaros, P
Michelson, PF
Mizuno, T
Moiseev, AA
Monte, C
Monzani, ME
Moretti, E
Morselli, A
Moskalenko, IV
Murgia, S
Nakamori, T
Naumann-Godo, M
Nolan, PL
Norris, JP
Nuss, E
Ohno, M
Ohsugi, T
Okumura, A
Omodei, N
Orlando, E
Ormes, JF
Ozaki, M
Paneque, D
Panetta, JH
Parent, D
Pelassa, V
Pepe, M
Pesce-Rollins, M
Piron, F
Porter, TA
Primack, JR
Raino, S
Rando, R
Razzano, M
Razzaque, S
Reimer, A
Reimer, O
Reyes, LC
Ripken, J
Ritz, S
Romani, RW
Roth, M
Sadrozinski, HFW
Sanchez, D
Sander, A
Scargle, JD
Schalk, TL
Sgro, C
Shaw, MS
Siskind, EJ
Smith, PD
Spandre, G
Spinelli, P
Stecker, FW
Strickman, MS
Suson, DJ
Tajima, H
Takahashi, H
Takahashi, T
Tanaka, T
Thayer, JB
Thayer, JG
Thompson, DJ
Tibaldo, L
Torres, DF
Tosti, G
Tramacere, A
Uchiyama, Y
Usher, TL
Vandenbroucke, J
Vasileiou, V
Vilchez, N
Vitale, V
von Kienlin, A
Waite, AP
Wang, P
Wilson-Hodge, C
Winer, BL
Wood, KS
Yamazaki, R
Yang, Z
Ylinen, T
Ziegler, M
AF Abdo, A. A.
Ackermann, M.
Ajello, M.
Allafort, A.
Atwood, W. B.
Baldini, L.
Ballet, J.
Barbiellini, G.
Baring, M. G.
Bastieri, D.
Baughman, B. M.
Bechtol, K.
Bellazzini, R.
Berenji, B.
Bhat, P. N.
Blandford, R. D.
Bloom, E. D.
Bonamente, E.
Borgland, A. W.
Bouvier, A.
Brandt, T. J.
Bregeon, J.
Brez, A.
Briggs, M. S.
Brigida, M.
Bruel, P.
Buehler, R.
Burnett, T. H.
Buson, S.
Caliandro, G. A.
Cameron, R. A.
Caraveo, P. A.
Carrigan, S.
Casandjian, J. M.
Cavazzuti, E.
Cecchi, C.
Celik, O.
Charles, E.
Chekhtman, A.
Chen, A. W.
Cheung, C. C.
Chiang, J.
Ciprini, S.
Claus, R.
Cohen-Tanugi, J.
Connaughton, V.
Conrad, J.
Costamante, L.
Dermer, C. D.
de Angelis, A.
de Palma, F.
Digel, S. W.
Dingus, B. L.
do Couto e Silva, E.
Drell, P. S.
Dubois, R.
Favuzzi, C.
Fegan, S. J.
Finke, J.
Fortin, P.
Fukazawa, Y.
Funk, S.
Fusco, P.
Gargano, F.
Gasparrini, D.
Gehrels, N.
Germani, S.
Giglietto, N.
Gilmore, R. C.
Giommi, P.
Giordano, F.
Giroletti, M.
Glanzman, T.
Godfrey, G.
Granot, J.
Greiner, J.
Grenier, I. A.
Grove, J. E.
Guiriec, S.
Gustafsson, M.
Hadasch, D.
Hayashida, M.
Hays, E.
Horan, D.
Hughes, R. E.
Johannesson, G.
Johnson, A. S.
Johnson, R. P.
Johnson, W. N.
Kamae, T.
Katagiri, H.
Kataoka, J.
Knoedlseder, J.
Kocevski, D.
Kuss, M.
Lande, J.
Latronico, L.
Lee, S-H
Garde, M. Llena
Longo, F.
Loparco, F.
Lott, B.
Lovellette, M. N.
Lubrano, P.
Makeev, A.
Mazziotta, N.
McConville, W.
McEnery, J. E.
McGlynn, S.
Mehault, J.
Meszaros, P.
Michelson, P. F.
Mizuno, T.
Moiseev, A. A.
Monte, C.
Monzani, M. E.
Moretti, E.
Morselli, A.
Moskalenko, I. V.
Murgia, S.
Nakamori, T.
Naumann-Godo, M.
Nolan, P. L.
Norris, J. P.
Nuss, E.
Ohno, M.
Ohsugi, T.
Okumura, A.
Omodei, N.
Orlando, E.
Ormes, J. F.
Ozaki, M.
Paneque, D.
Panetta, J. H.
Parent, D.
Pelassa, V.
Pepe, M.
Pesce-Rollins, M.
Piron, F.
Porter, T. A.
Primack, J. R.
Raino, S.
Rando, R.
Razzano, M.
Razzaque, S.
Reimer, A.
Reimer, O.
Reyes, L. C.
Ripken, J.
Ritz, S.
Romani, R. W.
Roth, M.
Sadrozinski, H. F. -W.
Sanchez, D.
Sander, A.
Scargle, J. D.
Schalk, T. L.
Sgro, C.
Shaw, M. S.
Siskind, E. J.
Smith, P. D.
Spandre, G.
Spinelli, P.
Stecker, F. W.
Strickman, M. S.
Suson, D. J.
Tajima, H.
Takahashi, H.
Takahashi, T.
Tanaka, T.
Thayer, J. B.
Thayer, J. G.
Thompson, D. J.
Tibaldo, L.
Torres, D. F.
Tosti, G.
Tramacere, A.
Uchiyama, Y.
Usher, T. L.
Vandenbroucke, J.
Vasileiou, V.
Vilchez, N.
Vitale, V.
von Kienlin, A.
Waite, A. P.
Wang, P.
Wilson-Hodge, C.
Winer, B. L.
Wood, K. S.
Yamazaki, R.
Yang, Z.
Ylinen, T.
Ziegler, M.
TI FERMI LARGE AREA TELESCOPE CONSTRAINTS ON THE GAMMA-RAY OPACITY OF THE
UNIVERSE
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE diffuse radiation; dust, extinction; gamma rays: general
ID EXTRAGALACTIC BACKGROUND LIGHT; INTERGALACTIC MAGNETIC-FIELDS; ALL-SKY
SURVEY; TEV BLAZARS; DETECTED BLAZARS; LIKELIHOOD RATIO;
SPACE-TELESCOPE; GALAXY COUNTS; GEV EMISSION; UPPER LIMITS
AB The extragalactic background light (EBL) includes photons with wavelengths from ultraviolet to infrared, which are effective at attenuating gamma rays with energy above similar to 10 GeV during propagation from sources at cosmological distances. This results in a redshift- and energy-dependent attenuation of the gamma-ray flux of extragalactic sources such as blazars and gamma-ray bursts (GRBs). The Large Area Telescope on board Fermi detects a sample of gamma-ray blazars with redshift up to z similar to 3, and GRBs with redshift up to z similar to 4.3. Using photons above 10 GeV collected by Fermi over more than one year of observations for these sources, we investigate the effect of gamma-ray flux attenuation by the EBL. We place upper limits on the gamma-ray opacity of the universe at various energies and redshifts and compare this with predictions from well-known EBL models. We find that an EBL intensity in the optical-ultraviolet wavelengths as great as predicted by the "baseline" model of Stecker et al. can be ruled out with high confidence.
C1 [Ackermann, M.; Ajello, M.; Allafort, A.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Borgland, A. W.; Bouvier, A.; Buehler, R.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; Costamante, L.; Digel, S. W.; do Couto e Silva, E.; Drell, P. S.; Dubois, R.; Funk, S.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Kocevski, D.; Lande, J.; Lee, S-H; Michelson, P. F.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Omodei, N.; Paneque, D.; Panetta, J. H.; Porter, T. A.; Reimer, A.; Reimer, O.; Romani, R. W.; Shaw, M. S.; Tajima, H.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Tramacere, A.; Uchiyama, Y.; Usher, T. L.; Vandenbroucke, J.; Waite, A. P.; Wang, P.] Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.
[Ackermann, M.; Ajello, M.; Allafort, A.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Borgland, A. W.; Bouvier, A.; Buehler, R.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; Costamante, L.; Digel, S. W.; do Couto e Silva, E.; Drell, P. S.; Dubois, R.; Funk, S.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Kocevski, D.; Lande, J.; Lee, S-H; Michelson, P. F.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Omodei, N.; Paneque, D.; Panetta, J. H.; Porter, T. A.; Reimer, A.; Reimer, O.; Romani, R. W.; Shaw, M. S.; Tajima, H.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Tramacere, A.; Uchiyama, Y.; Usher, T. L.; Vandenbroucke, J.; Waite, A. P.; Wang, P.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.
[Abdo, A. A.; Chekhtman, A.; Cheung, C. C.; Dermer, C. D.; Finke, J.; Grove, J. E.; Johnson, W. N.; Lovellette, M. N.; Makeev, A.; Parent, D.; Razzaque, S.; Strickman, M. S.; Wood, K. S.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA.
[Abdo, A. A.; Cheung, C. C.; Finke, J.; Razzaque, S.] Natl Acad Sci, Natl Res Council Res Associate, Washington, DC 20001 USA.
[Atwood, W. B.; Gilmore, R. C.; Johnson, R. P.; Primack, J. R.; Ritz, S.; Sadrozinski, H. F. -W.; Schalk, T. L.; Ziegler, M.] Univ Calif Santa Cruz, Dept Phys, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Atwood, W. B.; Gilmore, R. C.; Johnson, R. P.; Primack, J. R.; Ritz, S.; Sadrozinski, H. F. -W.; Schalk, T. L.; Ziegler, M.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA.
[Baldini, L.; Bellazzini, R.; Bregeon, J.; Brez, A.; Kuss, M.; Latronico, L.; Pesce-Rollins, M.; Razzano, M.; Sgro, C.; Spandre, G.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Ballet, J.; Casandjian, J. M.; Grenier, I. A.; Naumann-Godo, M.; Tibaldo, L.] Univ Paris Diderot, CEA Saclay, Lab AIM, CEA,IRFU,CNRS,Serv Astrophys, F-91191 Gif Sur Yvette, France.
[Barbiellini, G.; Longo, F.; Moretti, E.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Barbiellini, G.; Longo, F.; Moretti, E.] Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy.
[Baring, M. G.] Rice Univ, Dept Phys & Astron, Houston, TX 77251 USA.
[Bastieri, D.; Buson, S.; Gustafsson, M.; Rando, R.; Tibaldo, L.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Bastieri, D.; Buson, S.; Carrigan, S.; Rando, R.; Tibaldo, L.] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy.
[Baughman, B. M.; Brandt, T. J.; Hughes, R. E.; Sander, A.; Smith, P. D.; Winer, B. L.] Ohio State Univ, Dept Phys, Ctr Cosmol & Astro Particle Phys, Columbus, OH 43210 USA.
[Bhat, P. N.; Briggs, M. S.; Connaughton, V.; Guiriec, S.] Univ Alabama, CSPAR, Huntsville, AL 35899 USA.
[Bonamente, E.; Cecchi, C.; Germani, S.; Lubrano, P.; Pepe, M.; Tosti, G.] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy.
[Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.; Pepe, M.; Tosti, G.] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy.
[Brandt, T. J.; Knoedlseder, J.; Vilchez, N.] CNRS UPS, Ctr Etud Spatiale Rayonnements, F-31028 Toulouse 4, France.
[Brigida, M.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Giordano, F.; Loparco, F.; Monte, C.; Raino, S.; Spinelli, P.] Univ Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.
[Brigida, M.; de Palma, F.; Favuzzi, C.; Fusco, P.; Gargano, F.; Giglietto, N.; Giordano, F.; Loparco, F.; Mazziotta, N.; Monte, C.; Raino, S.; Spinelli, P.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Bruel, P.; Fegan, S. J.; Fortin, P.; Horan, D.; Sanchez, D.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France.
[Burnett, T. H.; Roth, M.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Caliandro, G. A.; Torres, D. F.] Inst Ciencies Espai IEEC CSIC, Barcelona 08193, Spain.
[Caraveo, P. A.; Chen, A. W.] INAF Ist Astrofis Spaziale & Fis Cosm, I-20133 Milan, Italy.
[Cavazzuti, E.; Gasparrini, D.; Giommi, P.] Sci Data Ctr, ASI, I-00044 Rome, Italy.
[Celik, O.; Gehrels, N.; Hays, E.; McConville, W.; McEnery, J. E.; Moiseev, A. A.; Stecker, F. W.; Thompson, D. J.; Vasileiou, V.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Celik, O.; Moiseev, A. A.; Vasileiou, V.] CRESST, Greenbelt, MD 20771 USA.
[Celik, O.; Vasileiou, V.] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA.
[Celik, O.; Vasileiou, V.] Univ Maryland Baltimore Cty, Ctr Space Sci & Technol, Baltimore, MD 21250 USA.
[Chekhtman, A.; Makeev, A.; Parent, D.] George Mason Univ, Fairfax, VA 22030 USA.
[Cohen-Tanugi, J.; Mehault, J.; Nuss, E.; Pelassa, V.; Piron, F.] Univ Montpellier 2, CNRS, IN2P3, Lab Phys Theor & Astroparticules, Montpellier, France.
[Conrad, J.; Garde, M. Llena; Ripken, J.; Yang, Z.] Stockholm Univ, Dept Phys, AlbaNova, SE-10691 Stockholm, Sweden.
[Conrad, J.; Garde, M. Llena; McGlynn, S.; Ripken, J.; Yang, Z.; Ylinen, T.] AlbaNova, Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden.
[de Angelis, A.] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy.
[de Angelis, A.] Ist Nazl Fis Nucl, Grp Coll Udine, Sez Trieste, I-33100 Udine, Italy.
[Dingus, B. L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Fukazawa, Y.; Katagiri, H.; Mizuno, T.] Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan.
[Giroletti, M.] INAF Ist Radioastron, I-40129 Bologna, Italy.
[Granot, J.] Univ Hertfordshire, Sci & Technol Res Inst, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England.
[Greiner, J.; Orlando, E.; von Kienlin, A.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
[Hadasch, D.; Torres, D. F.] ICREA, Barcelona, Spain.
[Kataoka, J.; Nakamori, T.] Waseda Univ, Res Inst Sci & Engn, Shinjuku Ku, Tokyo 1698555, Japan.
[Lott, B.] Ctr Etud Nucl Bordeaux Gradignan, CNRS, IN2P3, UMR 5797, F-33175 Gradignan, France.
[Lott, B.] Univ Bordeaux, Ctr Etud Nucl Bordeaux Gradignan, UMR 5797, F-33175 Gradignan, France.
[McConville, W.; McEnery, J. E.; Moiseev, A. A.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
[McConville, W.; McEnery, J. E.; Moiseev, A. A.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
[McGlynn, S.; Ylinen, T.] AlbaNova, Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden.
[Meszaros, P.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA.
[Morselli, A.; Vitale, V.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy.
[Norris, J. P.; Ormes, J. F.] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA.
[Ohno, M.; Okumura, A.; Ozaki, M.; Takahashi, T.] JAXA, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan.
[Ohsugi, T.; Takahashi, H.] Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Hiroshima 7398526, Japan.
[Reimer, A.; Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria.
[Reimer, A.; Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria.
[Reyes, L. C.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[Scargle, J. D.] NASA, Ames Res Ctr, Div Space Sci, Moffett Field, CA 94035 USA.
[Siskind, E. J.] NYCB Real Time Comp Inc, Lattingtown, NY 11560 USA.
[Suson, D. J.] Purdue Univ Calumet, Dept Chem & Phys, Hammond, IN 46323 USA.
[Tramacere, A.] CIFS, I-10133 Turin, Italy.
[Tramacere, A.] INTEGRAL Sci Data Ctr, CH-1290 Versoix, Switzerland.
[Vitale, V.] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy.
[Wilson-Hodge, C.] NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35812 USA.
[Yamazaki, R.] Aoyama Gakuin Univ, Dept Math & Phys, Kanagawa 2525258, Japan.
[Ylinen, T.] Univ Kalmar, Sch Pure & Appl Nat Sci, SE-39182 Kalmar, Sweden.
RP Bouvier, A (reprint author), Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.
EM bouvier@stanford.edu; chen@iasf-milano.inaf.it; silvia.raino@ba.infn.it;
md.razzaque.ctr.bg@nrl.navy.mil; anita.reimer@uibk.ac.at;
lreyes@kicp.uchicago.edu
RI Johnson, Neil/G-3309-2014; Funk, Stefan/B-7629-2015; Johannesson,
Gudlaugur/O-8741-2015; Gargano, Fabio/O-8934-2015; Loparco,
Francesco/O-8847-2015; Moskalenko, Igor/A-1301-2007; Mazziotta, Mario
/O-8867-2015; Sgro, Carmelo/K-3395-2016; Torres, Diego/O-9422-2016;
Orlando, E/R-5594-2016; Thompson, David/D-2939-2012; Stecker,
Floyd/D-3169-2012; Rando, Riccardo/M-7179-2013; Gehrels,
Neil/D-2971-2012; McEnery, Julie/D-6612-2012; Baldini, Luca/E-5396-2012;
lubrano, pasquale/F-7269-2012; Hays, Elizabeth/D-3257-2012; Morselli,
Aldo/G-6769-2011; Kuss, Michael/H-8959-2012; giglietto,
nicola/I-8951-2012; Reimer, Olaf/A-3117-2013; Tosti, Gino/E-9976-2013;
Ozaki, Masanobu/K-1165-2013;
OI Funk, Stefan/0000-0002-2012-0080; Johannesson,
Gudlaugur/0000-0003-1458-7036; Gargano, Fabio/0000-0002-5055-6395;
Loparco, Francesco/0000-0002-1173-5673; Moskalenko,
Igor/0000-0001-6141-458X; Mazziotta, Mario /0000-0001-9325-4672; Torres,
Diego/0000-0002-1522-9065; Dingus, Brenda/0000-0001-8451-7450; giommi,
paolo/0000-0002-2265-5003; De Angelis, Alessandro/0000-0002-3288-2517;
Caraveo, Patrizia/0000-0003-2478-8018; Thompson,
David/0000-0001-5217-9135; lubrano, pasquale/0000-0003-0221-4806;
Morselli, Aldo/0000-0002-7704-9553; giglietto,
nicola/0000-0002-9021-2888; Reimer, Olaf/0000-0001-6953-1385;
Gasparrini, Dario/0000-0002-5064-9495; Tramacere,
Andrea/0000-0002-8186-3793; Baldini, Luca/0000-0002-9785-7726; Sgro',
Carmelo/0000-0001-5676-6214; SPINELLI, Paolo/0000-0001-6688-8864; Rando,
Riccardo/0000-0001-6992-818X; Bastieri, Denis/0000-0002-6954-8862;
Omodei, Nicola/0000-0002-5448-7577; Pesce-Rollins,
Melissa/0000-0003-1790-8018; Giroletti, Marcello/0000-0002-8657-8852;
Moretti, Elena/0000-0001-5477-9097; Berenji, Bijan/0000-0002-4551-772X
FU Kavli Institute for Cosmological Physics at the University of Chicago
[NSF PHY-0114422, NSF PHY-0551142]; Marie Curie IRG [248037]
FX The Fermi-LAT Collaboration acknowledges generous ongoing support from a
number of agencies and institutes that have supported both the
development and the operation of the LAT as well as scientific data
analysis. These include the National Aeronautics and Space
Administration and the Department of Energy in the United States, the
Commissariat a l'Energie Atomique and the Centre National de la
Recherche Scientifique/Institut National de Physique Nucleaire et de
Physique des Particules in France, the Agenzia Spaziale Italiana and the
Istituto Nazionale di Fisica Nucleare in Italy, the Ministry of
Education, Culture, Sports, Science and Technology (MEXT), High Energy
Accelerator Research Organization (KEK) and Japan Aerospace Exploration
Agency (JAXA) in Japan, and the K. A. Wallenberg Foundation, the Swedish
Research Council and the Swedish National Space Board in Sweden.
Additional support for science analysis during the operations phase is
gratefully acknowledged from the Istituto Nazionale di Astrofisica in
Italy and the Centre National d'Etudes Spatiales in France. The Fermi
GBM collaboration acknowledges support for GBM development, operations
and data analysis from NASA in the US and BMWi/DLR in Germany. L.R.C.
acknowledges support by the Kavli Institute for Cosmological Physics at
the University of Chicago through grants NSF PHY-0114422 and NSF
PHY-0551142 and an endowment from the Kavli Foundation and its founder
Fred Kavli. A. R. acknowledges support by Marie Curie IRG grant 248037
within the FP7 Program. Furthermore, helpful comments from the referee
are acknowledged.
NR 83
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U1 3
U2 11
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD NOV 10
PY 2010
VL 723
IS 2
BP 1082
EP 1096
DI 10.1088/0004-637X/723/2/1082
PG 15
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 678QA
UT WOS:000284093700011
ER
PT J
AU Riebel, D
Meixner, M
Fraser, O
Srinivasan, S
Cook, K
Vijh, U
AF Riebel, David
Meixner, Margaret
Fraser, Oliver
Srinivasan, Sundar
Cook, Kem
Vijh, Uma
TI INFRARED PERIOD-LUMINOSITY RELATIONS OF EVOLVED VARIABLE STARS IN THE
LARGE MAGELLANIC CLOUD
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE infrared: stars; Magellanic Clouds; stars: AGB and post-AGB; stars:
carbon; stars: variables: general
ID ASYMPTOTIC GIANT BRANCH; LONG SECONDARY PERIODS; YOUNG STELLAR OBJECTS;
SPITZER SAGE SURVEY; AGB STARS; RED GIANTS; MASS-LOSS; MIRA VARIABLES;
EVOLUTION; DUST
AB We combine variability information from the MAssive Compact Halo Objects survey of the Large Magellanic Cloud with infrared photometry from the Spitzer Space Telescope Surveying the Agents of a Galaxy's Evolution survey to create a data set of similar to 30,000 variable red sources. We photometrically classify these sources as being on the first ascent of the red giant branch, or as being in one of three stages along the asymptotic giant branch (AGB): oxygenrich, carbon-rich, or highly reddened with indeterminate chemistry ("extreme" AGB candidates). We present linear period-luminosity (P-L) relationships for these sources using eight separate infrared bands (J, H, K(s), 3.6, 4.5, 5.8, 8.0, and 24 mu m) as proxies for the luminosity. We find that the wavelength dependence of the slope of the P-L relationship is different for different photometrically determined classes of AGB stars. Stars photometrically classified as O-rich show the least variation of slope with wavelength, while dust enshrouded extreme AGB stars show a pronounced trend toward steeper slopes with increasing wavelength. We find that O-rich AGB stars pulsating in the fundamental mode obey a period-magnitude relation with a slope of -3.41 +/- 0.04 when magnitude is measured in the 3.6 mu m band, in contrast to C-rich AGB stars, which obey a relation of slope -3.77 +/- 0.05.
C1 [Riebel, David] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA.
[Meixner, Margaret] Space Telescope Sci Inst, Baltimore, MD 21218 USA.
[Fraser, Oliver] Univ Washington, Dept Astron, Seattle, WA 98195 USA.
[Srinivasan, Sundar] Inst Astrophys, F-75014 Paris, France.
[Cook, Kem] Lawrence Livermore Natl Lab, IGPP, Livermore, CA 94550 USA.
[Vijh, Uma] Univ Toledo, Ritter Astrophys Res Ctr, Toledo, OH 43606 USA.
RP Riebel, D (reprint author), Johns Hopkins Univ, Dept Phys & Astron, 3400 N Charles St, Baltimore, MD 21218 USA.
EM driebel@pha.jhu.edu
FU NASA [NAG5-12595, 1275598]; U.S. Department of Energy through the
University of California, Lawrence Livermore National Laboratory
[W-7405-Eng-48]; National Science Foundation through the Center for
Particle Astrophysics of the University of California [AST-8809616];
Mount Stromlo and Siding Spring Observatory; Australian National
University
FX The SAGE Project is supported by NASA/Spitzer grant 1275598 and NASA
NAG5-12595.; This paper utilizes public domain data obtained by the
MACHO Project, jointly funded by the U.S. Department of Energy through
the University of California, Lawrence Livermore National Laboratory
under contract no. W-7405-Eng-48, by the National Science Foundation
through the Center for Particle Astrophysics of the University of
California under cooperative agreement AST-8809616, and by the Mount
Stromlo and Siding Spring Observatory, part of the Australian National
University.
NR 39
TC 30
Z9 30
U1 0
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD NOV 10
PY 2010
VL 723
IS 2
BP 1195
EP 1209
DI 10.1088/0004-637X/723/2/1195
PG 15
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 678QA
UT WOS:000284093700020
ER
PT J
AU High, FW
Stalder, B
Song, J
Ade, PAR
Aird, KA
Allam, SS
Armstrong, R
Barkhouse, WA
Benson, BA
Bertin, E
Bhattacharya, S
Bleem, LE
Brodwin, M
Buckley-Geer, EJ
Carlstrom, JE
Challis, P
Chang, CL
Crawford, TM
Crites, AT
de Haan, T
Desai, S
Dobbs, MA
Dudley, JP
Foley, RJ
George, EM
Gladders, M
Halverson, NW
Hamuy, M
Hansen, SM
Holder, GP
Holzapfel, WL
Hrubes, JD
Joy, M
Keisler, R
Lee, AT
Leitch, EM
Lin, H
Lin, YT
Loehr, A
Lueker, M
Marrone, D
McMahon, JJ
Mehl, J
Meyer, SS
Mohr, JJ
Montroy, TE
Morell, N
Ngeow, CC
Padin, S
Plagge, T
Pryke, C
Reichardt, CL
Rest, A
Ruel, J
Ruhl, JE
Schaffer, KK
Shaw, L
Shirokoff, E
Smith, RC
Spieler, HG
Staniszewski, Z
Stark, AA
Stubbs, CW
Tucker, DL
Vanderlinde, K
Vieira, JD
Williamson, R
Wood-Vasey, WM
Yang, Y
Zahn, O
Zenteno, A
AF High, F. W.
Stalder, B.
Song, J.
Ade, P. A. R.
Aird, K. A.
Allam, S. S.
Armstrong, R.
Barkhouse, W. A.
Benson, B. A.
Bertin, E.
Bhattacharya, S.
Bleem, L. E.
Brodwin, M.
Buckley-Geer, E. J.
Carlstrom, J. E.
Challis, P.
Chang, C. L.
Crawford, T. M.
Crites, A. T.
de Haan, T.
Desai, S.
Dobbs, M. A.
Dudley, J. P.
Foley, R. J.
George, E. M.
Gladders, M.
Halverson, N. W.
Hamuy, M.
Hansen, S. M.
Holder, G. P.
Holzapfel, W. L.
Hrubes, J. D.
Joy, M.
Keisler, R.
Lee, A. T.
Leitch, E. M.
Lin, H.
Lin, Y. -T.
Loehr, A.
Lueker, M.
Marrone, D.
McMahon, J. J.
Mehl, J.
Meyer, S. S.
Mohr, J. J.
Montroy, T. E.
Morell, N.
Ngeow, C. -C.
Padin, S.
Plagge, T.
Pryke, C.
Reichardt, C. L.
Rest, A.
Ruel, J.
Ruhl, J. E.
Schaffer, K. K.
Shaw, L.
Shirokoff, E.
Smith, R. C.
Spieler, H. G.
Staniszewski, Z.
Stark, A. A.
Stubbs, C. W.
Tucker, D. L.
Vanderlinde, K.
Vieira, J. D.
Williamson, R.
Wood-Vasey, W. M.
Yang, Y.
Zahn, O.
Zenteno, A.
TI OPTICAL REDSHIFT AND RICHNESS ESTIMATES FOR GALAXY CLUSTERS SELECTED
WITH THE SUNYAEV-ZEL'DOVICH EFFECT FROM 2008 SOUTH POLE TELESCOPE
OBSERVATIONS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE cosmology: observations; galaxies: clusters: general
ID SEQUENCE LUMINOSITY FUNCTION; COLOR-MAGNITUDE RELATION; RED-SEQUENCE;
CONSTRAINTS; COSMOLOGY; CATALOG; VELOCITIES; EVOLUTION; STELLAR; MODELS
AB We present redshifts and optical richness properties of 21 galaxy clusters uniformly selected by their Sunyaev-Zel'dovich (SZ) signature. These clusters, plus an additional, unconfirmed candidate, were detected in a 178 deg(2) area surveyed by the South Pole Telescope (SPT) in 2008. Using griz imaging from the Blanco Cosmology Survey and from pointed Magellan telescope observations, as well as spectroscopy using Magellan facilities, we confirm the existence of clustered red-sequence galaxies, report red-sequence photometric redshifts, present spectroscopic redshifts for a subsample, and derive R(200) radii and M(200) masses from optical richness. The clusters span redshifts from 0.15 to greater than 1, with a median redshift of 0.74; three clusters are estimated to be at z > 1. Redshifts inferred from mean red-sequence colors exhibit 2% rms scatter in sigma(z)/(1 + z) with respect to the spectroscopic subsample for z < 1. We show that the M(200) cluster masses derived from optical richness correlate with masses derived from SPT data and agree with previously derived scaling relations to within the uncertainties. Optical and infrared imaging is an efficient means of cluster identification and redshift estimation in large SZ surveys, and exploiting the same data for richness measurements, as we have done, will be useful for constraining cluster masses and radii for large samples in cosmological analysis.
C1 [High, F. W.; Stalder, B.; Rest, A.; Ruel, J.; Stubbs, C. W.] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA.
[Song, J.; Ngeow, C. -C.; Yang, Y.] Univ Illinois, Dept Astron, Urbana, IL 61801 USA.
[Ade, P. A. R.] Cardiff Univ, Dept Phys & Astron, Cardiff CF24 3YB, Wales.
[Aird, K. A.; Hrubes, J. D.; Marrone, D.] Univ Chicago, Chicago, IL 60637 USA.
[Allam, S. S.; Buckley-Geer, E. J.; Lin, H.; Tucker, D. L.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Armstrong, R.; Desai, S.] Univ Illinois, Natl Ctr Supercomp Applicat, Urbana, IL 61801 USA.
[Barkhouse, W. A.] Univ N Dakota, Dept Phys & Astrophys, Grand Forks, ND 58202 USA.
[Benson, B. A.; George, E. M.; Holzapfel, W. L.; Lee, A. T.; Lueker, M.; Plagge, T.; Reichardt, C. L.; Shirokoff, E.; Zahn, O.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Benson, B. A.; Bleem, L. E.; Carlstrom, J. E.; Chang, C. L.; Crawford, T. M.; Crites, A. T.; Gladders, M.; Keisler, R.; Leitch, E. M.; Marrone, D.; McMahon, J. J.; Mehl, J.; Meyer, S. S.; Padin, S.; Pryke, C.; Schaffer, K. K.; Vieira, J. D.; Williamson, R.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[Benson, B. A.; Carlstrom, J. E.; Chang, C. L.; McMahon, J. J.; Meyer, S. S.; Pryke, C.; Schaffer, K. K.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[Bertin, E.] Inst Astrophys Paris, F-75014 Paris, France.
[Bhattacharya, S.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Bleem, L. E.; Carlstrom, J. E.; Keisler, R.; Meyer, S. S.; Vieira, J. D.] Univ Chicago, Dept Phys, Chicago, IL 60637 USA.
[Brodwin, M.; Challis, P.; Foley, R. J.; Loehr, A.; Stark, A. A.; Stubbs, C. W.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Carlstrom, J. E.; Crawford, T. M.; Crites, A. T.; Gladders, M.; Leitch, E. M.; Mehl, J.; Meyer, S. S.; Padin, S.; Plagge, T.; Pryke, C.; Williamson, R.] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
[de Haan, T.; Dobbs, M. A.; Dudley, J. P.; Holder, G. P.; Shaw, L.; Vanderlinde, K.] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
[Halverson, N. W.] Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA.
[Halverson, N. W.] Univ Colorado, Dept Phys, Boulder, CO 80309 USA.
[Hamuy, M.; Morell, N.] Univ Chile, Dept Astron, Santiago, Chile.
[Hansen, S. M.] Univ Calif Santa Cruz, Univ Calif Observ, Santa Cruz, CA 95064 USA.
[Hansen, S. M.] Univ Calif Santa Cruz, Dept Astron, Santa Cruz, CA 95064 USA.
[Joy, M.] NASA, George C Marshall Space Flight Ctr, VP62, Dept Space Sci, Huntsville, AL 35812 USA.
[Lee, A. T.; Spieler, H. G.] Lawrence Berkeley Lab, Div Phys, Berkeley, CA 94720 USA.
[Lin, Y. -T.] Univ Tokyo, Inst Phys & Math Univ, Kashiwa, Chiba 2778568, Japan.
[McMahon, J. J.] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA.
[Mohr, J. J.; Zenteno, A.] Univ Munich, Dept Phys, D-81679 Munich, Germany.
[Mohr, J. J.; Zenteno, A.] Excellence Cluster Univ, D-85748 Garching, Germany.
[Mohr, J. J.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
[Montroy, T. E.; Ruhl, J. E.; Staniszewski, Z.] Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA.
[Shaw, L.] Yale Univ, Dept Phys, New Haven, CT 06520 USA.
[Smith, R. C.] Cerro Tololo Interamer Observ, La Serena, Chile.
[Wood-Vasey, W. M.] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA.
RP High, FW (reprint author), Harvard Univ, Dept Phys, 17 Oxford St, Cambridge, MA 02138 USA.
EM high@physics.harvard.edu
RI Stubbs, Christopher/C-2829-2012; Williamson, Ross/H-1734-2015;
Holzapfel, William/I-4836-2015; Hamuy, Mario/G-7541-2016
OI Stubbs, Christopher/0000-0003-0347-1724; Marrone,
Daniel/0000-0002-2367-1080; Aird, Kenneth/0000-0003-1441-9518;
Williamson, Ross/0000-0002-6945-2975; Reichardt,
Christian/0000-0003-2226-9169; Tucker, Douglas/0000-0001-7211-5729;
Stark, Antony/0000-0002-2718-9996;
FU National Aeronautics and Space Administration; National Science
Foundation [AST-0506752, AST-0607485, ANT-0638937, ANT-0130612,
MRI-0723073]; DOE [DE-FG02-08ER41569, DE-AC02-05CH11231]; NIST
[70NANB8H8007]; Harvard University; Brinson Foundation; Clay fellowship
FX This research has made use of the NASA/IPAC Extragalactic Database (NED)
which is operated by the Jet Propulsion Laboratory, California Institute
of Technology, under contract with the National Aeronautics and Space
Administration. This publication has made use of data products from the
Two Micron All Sky Survey, which is a joint project of the University of
Massachusetts and the Infrared Processing and Analysis Center/California
Institute of Technology, funded by the National Aeronautics and Space
Administration and the National Science Foundation. This research has
made use of the NASA/IPAC Infrared Science Archive, which is operated by
the Jet Propulsion Laboratory, California Institute of Technology, under
contract with the National Aeronautics and Space Administration.; This
work is supported by the NSF (AST-0506752, AST-0607485, AST-0506752,
ANT-0638937, ANT-0130612, MRI-0723073), the DOE (DE-FG02-08ER41569 and
DE-AC02-05CH11231), NIST (70NANB8H8007), and Harvard University. B.S.
and A.L. gratefully acknowledge support by the Brinson Foundation.
R.J.F. acknowledges the generous support of a Clay fellowship.
NR 64
TC 48
Z9 48
U1 1
U2 5
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD NOV 10
PY 2010
VL 723
IS 2
BP 1736
EP 1747
DI 10.1088/0004-637X/723/2/1736
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 678QA
UT WOS:000284093700061
ER
PT J
AU Rodgers, AJ
Petersson, NA
Sjogreen, B
AF Rodgers, Arthur J.
Petersson, N. Anders
Sjogreen, Bjorn
TI Simulation of topographic effects on seismic waves from shallow
explosions near the North Korean nuclear test site with emphasis on
shear wave generation
SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
LA English
DT Article
ID 9 OCTOBER 2006; UNITED-STATES EARTHQUAKES; FINITE-DIFFERENCE METHOD;
NEVADA TEST-SITE; NUMERICAL SIMULATIONS; GROUND-MOTION; LG-WAVES;
S-WAVES; TELESEISMIC OBSERVATIONS; HETEROGENEOUS MEDIA
AB We performed high-resolution (8 Hz) three-dimensional simulations of ground motions from shallow explosions in the presence of rough surface topography near the North Korean nuclear test site to study elastic propagation effects with emphasis on theoretical aspects of shear wave generation. Interaction with rough topography causes significant P-to-Rg scattering along the surface with amplification of high-frequency (2-8 Hz) shear waves relative to the flat Earth case. Shear waves of different polarizations are coupled by topographic scattering. Rg precursors composed of P-to-Rg conversions traveling as surface waves have the spectral amplitudes comparable to the P wave, while the Rg phase has the low-frequency (0.5-3 Hz) spectral shape of the Rg from the flat case plus the high-frequency (3-8 Hz) P wave spectra. Motions at near-vertical takeoff angles corresponding to teleseismic propagation are increased or decreased indicating that waves are focused or defocused by topographic features above the source. Topographic roughness has a dramatic effect as short-wavelength features (<2-5 km) are included. Higher frequencies are amplified by topography, including frequencies corresponding to wavelengths shorter than the shortest topographic scale length. Overall topography enhances energy propagating along the surface near the source, amplifies surface waves, and tends to balance SV- and SH-polarized motions, all of which impact shear wave observations used for nuclear explosion monitoring. Further simulation studies could elucidate how the wavefield emerging from a topographically rough area ultimately propagates to regional and/or teleseismic distances.
C1 [Rodgers, Arthur J.] Lawrence Livermore Natl Lab, Geophys Monitoring Program, Livermore, CA 94551 USA.
[Rodgers, Arthur J.] Univ Grenoble 1, Lab Geophys Interne & Tectonophys, Grenoble, France.
[Petersson, N. Anders; Sjogreen, Bjorn] Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94551 USA.
RP Rodgers, AJ (reprint author), Lawrence Livermore Natl Lab, Geophys Monitoring Program, L-046, Livermore, CA 94551 USA.
EM rodgers7@llnl.gov; andersp@llnl.gov; sjogreen2@llnl.gov
RI Rodgers, Arthur/E-2443-2011
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]
FX A.R. is grateful for support as a Fulbright Scholar from the Council for
International Exchange of Scholars and the Commission franco-americaine
d'echanges universitaires et culturel, to Michel Campillo for hosting
him at the Laboratoire de Geophysique Interne et Tectonophysique,
Universite Joseph Fourier, Grenoble, France, and to the Lawrence
Livermore National Laboratory for granting Professional Research and
Teaching leave. We thank Jeff Wagoner for assistance with topographic
data from the Shuttle Radar Topography Mission project. We are grateful
to LLNL Laboratory Directed Research and Development for support to
develop the WPP code. The WPP code is open source and available with
documentation from the LLNL Web site [Petersson, 2010]. Simulations were
performed on parallel computers operated by Livermore Computing using a
Grand Challenge Allocation. Figures were made with the Generic Mapping
Tool (GMT) [Wessel and Smith, 1998]. Seismogram plots were made with
pssac2, developed by Lupei Zhu and Brian Savage. We are grateful for
discussions with Michel Bouchon, William Walter, Stephen Myers, and
Michael Pasyanos and to two anonymous reviewers for critical comments on
the original manuscript. This work was performed under the auspices of
the U.S. Department of Energy by Lawrence Livermore National Laboratory
under contract DE-AC52-07NA27344. This is LLNL contribution
LLNL-JRNL-433892.
NR 95
TC 18
Z9 19
U1 2
U2 11
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0148-0227
J9 J GEOPHYS RES-SOL EA
JI J. Geophys. Res.-Solid Earth
PD NOV 10
PY 2010
VL 115
AR B11309
DI 10.1029/2010JB007707
PG 27
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 680HO
UT WOS:000284223200003
ER
PT J
AU Grishaev, A
Guo, LA
Irving, T
Bax, A
AF Grishaev, Alexander
Guo, Liang
Irving, Thomas
Bax, Ad
TI Improved Fitting of Solution X-ray Scattering Data to Macromolecular
Structures and Structural Ensembles by Explicit Water Modeling
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID PROTEIN-STRUCTURE; BIOLOGICAL MACROMOLECULES; NMR; REFINEMENT;
RESOLUTION; DYNAMICS; CRYSTALLOGRAPHY; LYSOZYME; ANGSTROM; COMPLEX
AB A new procedure, AXES, is introduced for fitting small-angle X-ray scattering (SAXS) data to macromolecular structures and ensembles of structures. By using explicit water models to account for the effect of solvent, and by restricting the adjustable fitting parameters to those that dominate experimental uncertainties, including sample/buffer rescaling, detector dark current, and, within a narrow range, hydration layer density, superior fits between experimental high resolution structures and SAXS data are obtained. AXES results are found to be more discriminating than standard Crysol fitting of SAXS data when evaluating poorly or incorrectly modeled protein structures. AXES results for ensembles of structures previously generated for ubiquitin show improved fits over fitting of the individual members of these ensembles, indicating these ensembles capture the dynamic behavior of proteins in solution.
C1 [Grishaev, Alexander; Bax, Ad] NIDDK, Chem Phys Lab, NIH, Bethesda, MD 20892 USA.
[Guo, Liang; Irving, Thomas] IIT, Biophys Collaborat Access Team, CSRRI, BCPS Dept, Chicago, IL 60616 USA.
RP Grishaev, A (reprint author), NIDDK, Chem Phys Lab, NIH, Bethesda, MD 20892 USA.
EM AlexanderG@intra.niddk.nih.gov; bax@nih.gov
RI ID, BioCAT/D-2459-2012
FU NIDDK, NIH; Office of the Director, NIH; U.S. Department of Energy
[W-31-109-ENG-38]; BioCAT Research Center; NIH [RR-08630]; NCI, NIH
[PUP-77]; Argonne National Laboratory [PUP-77]
FX We thank Gerhard Hummer for helpful discussions, Yang Shen for the
Rosetta models of GB3, and Frank Delaglio for assistance with webserver
implementation of AXES. This work was supported by the Intramural
Research Program of the NIDDK, NIH, and by the Intramural Antiviral
Target Program of the Office of the Director, NIH. We gratefully
acknowledge use of the Advanced Photon Source, supported by the U.S.
Department of Energy, Contract No. W-31-109-ENG-38, the BioCAT Research
Center, supported by the NIH, RR-08630, and the shared scattering
beamline resource allocated under the PUP-77 agreement between the NCI,
NIH, and the Argonne National Laboratory.
NR 25
TC 55
Z9 57
U1 3
U2 27
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD NOV 10
PY 2010
VL 132
IS 44
BP 15484
EP 15486
DI 10.1021/ja106173n
PG 3
WC Chemistry, Multidisciplinary
SC Chemistry
GA 676YL
UT WOS:000283955600009
PM 20958032
ER
PT J
AU Feng, PL
Perry, JJ
Nikodemski, S
Jacobs, BW
Meek, ST
Allendorf, MD
AF Feng, Patrick L.
Perry, John J.
Nikodemski, Stefan
Jacobs, Benjamin W.
Meek, Scott T.
Allendorf, Mark D.
TI Assessing the Purity of Metal-Organic Frameworks Using
Photoluminescence: MOF-5, ZnO Quantum Dots, and Framework Decomposition
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID NANOPARTICLES; PRECURSORS; PARTICLES; BEHAVIOR; WATER
AB Photoluminescence (PL) spectroscopy was used to characterize nanoscale ZnO impurities, amine-donor charge-transfer exciplexes, and framework decomposition in samples of MOF-5 prepared by various methods. The combined results cast doubt on previous reports describing MOF-5 as a semiconductor and demonstrate that PL as a tool for characterizing MOF purity possesses advantages such as simplicity, speed, and sensitivity over currently employed powder XRD MOF characterization methods.
C1 [Feng, Patrick L.; Perry, John J.; Nikodemski, Stefan; Jacobs, Benjamin W.; Meek, Scott T.; Allendorf, Mark D.] Sandia Natl Labs, Livermore, CA 94551 USA.
RP Allendorf, MD (reprint author), Sandia Natl Labs, Livermore, CA 94551 USA.
EM mdallen@sandia.gov
RI Perry IV, John/C-9155-2011
OI Perry IV, John/0000-0001-9393-5451
FU Defense Threat Reduction Agency [0743251-0]; U.S. Dept. of Energy;
Lockheed Martin Corporation; National Nuclear Security Administration
[DE-AC04-94AL85000]
FX This research was funded by the Defense Threat Reduction Agency under
Contract 0743251-0 and by the U.S. Dept. of Energy Office of
Proliferation Detection Programs. Sandia National Laboratories is a
multiprogram laboratory managed and operated by Sandia Corporation, a
wholly owned subsidiary of Lockheed Martin Corporation, for the National
Nuclear Security Administration under Contract DE-AC04-94AL85000.
NR 29
TC 67
Z9 69
U1 21
U2 127
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD NOV 10
PY 2010
VL 132
IS 44
BP 15487
EP 15489
DI 10.1021/ja1065625
PG 3
WC Chemistry, Multidisciplinary
SC Chemistry
GA 676YL
UT WOS:000283955600010
PM 20961048
ER
PT J
AU Greve, BK
Martin, KL
Lee, PL
Chupas, PJ
Chapman, KW
Wilkinson, AP
AF Greve, Benjamin K.
Martin, Kenneth L.
Lee, Peter L.
Chupas, Peter J.
Chapman, Karena W.
Wilkinson, Angus P.
TI Pronounced Negative Thermal Expansion from a Simple Structure: Cubic
ScF3
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID METAL-ORGANIC FRAMEWORKS; PHASE-TRANSITION; FERROELASTIC PROPERTIES;
CRYSTAL; ALPHA-ALF3; MECHANISM; DYNAMICS; TIF3
AB Scandium trifluoride maintains a cubic ReO3 type structure down to at least 10 K, although the pressure at which its cubic to rhombohedral phase transition occurs drops from >0.5 GPa at similar to 300 K to 0.1-0.2 GPa at 50 K. At low temperatures it shows strong negative thermal expansion (NTE) (60-110 K, alpha(1) approximate to - 14 ppm K-1). On heating, its coefficient of thermal expansion (CTE) smoothly increases, leading to a room temperature CTE that is similar to that of ZrW2O8 and positive thermal expansion above similar to 1100 K. While the cubic ReO3 structure type is often used as a simple illustration of how negative thermal expansion can arise from the thermally induced rocking of rigid structural units, ScF3 is the first material with this structure to provide a clear experimental illustration of this mechanism for NTE.
C1 [Greve, Benjamin K.; Martin, Kenneth L.; Wilkinson, Angus P.] Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA.
[Lee, Peter L.; Chupas, Peter J.; Chapman, Karena W.] Argonne Natl Lab, Adv Photon Source, Xray Sci Div, Argonne, IL 60439 USA.
RP Wilkinson, AP (reprint author), Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA.
EM angus.wilkinson@chemistry.gatech.edu
RI Wilkinson, Angus/C-3408-2008; Chapman, Karena/G-5424-2012
OI Wilkinson, Angus/0000-0003-2904-400X;
FU National Science Foundation [DMR-0605671, DMR-0905842]; U.S. Department
of Energy, Office of Science, Office of Basic Energy Sciences
[DE-AC02-06CH11357]; Scientific User Facilities Division, Office of
Basic Energy Sciences, U.S. Department of Energy
FX A.P.W. is grateful for support from the National Science Foundation
under Grants DMR-0605671 and DMR-0905842. Use of the Advanced Photon
Source at Argonne National Laboratory was supported by the U.S.
Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract No. DE-AC02-06CH11357. Part of this work was
performed at Oak Ridge National Laboratory's High Flux Isotope Reactor,
sponsored by the Scientific User Facilities Division, Office of Basic
Energy Sciences, U.S. Department of Energy. We are grateful for
assistance from Vasile O. Garlea and the sample environment staff of
HFIR.
NR 36
TC 106
Z9 109
U1 10
U2 81
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD NOV 10
PY 2010
VL 132
IS 44
BP 15496
EP 15498
DI 10.1021/ja106711v
PG 3
WC Chemistry, Multidisciplinary
SC Chemistry
GA 676YL
UT WOS:000283955600013
PM 20958035
ER
PT J
AU Woo, CH
Beaujuge, PM
Holcombe, TW
Lee, OP
Frechet, JMJ
AF Woo, Claire H.
Beaujuge, Pierre M.
Holcombe, Thomas W.
Lee, Olivia P.
Frechet, Jean M. J.
TI Incorporation of Furan into Low Band-Gap Polymers for Efficient Solar
Cells
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID PHOTOVOLTAIC PROPERTIES; BULK HETEROJUNCTIONS; ALPHA-OLIGOFURANS;
PERFORMANCE; COPOLYMERS; ACCEPTOR; POLY(3-HEXYLTHIOPHENE);
POLYTHIOPHENES; THIOPHENE; ENERGY
AB The design, synthesis, and characterization of the first examples of furan-containing low band-gap polymers, PDPP2FT and PDPP3F, with substantial power conversion efficiencies in organic solar cells are reported. Inserting furan moieties in the backbone of the conjugated polymers enables the use of relatively small solubilizing side chains because of the significant contribution of the furan rings to overall polymer solubility in common organic solvents. Bulk heterojunction solar cells fabricated from furan-containing polymers and PC(71)BM as the acceptor showed power conversion efficiencies reaching 5.0%.
C1 [Woo, Claire H.; Beaujuge, Pierre M.; Frechet, Jean M. J.] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Beaujuge, Pierre M.; Holcombe, Thomas W.; Lee, Olivia P.; Frechet, Jean M. J.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Woo, Claire H.; Frechet, Jean M. J.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
RP Frechet, JMJ (reprint author), Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
EM frechet@berkeley.edu
OI Frechet, Jean /0000-0001-6419-0163
FU Office of Science, Office of Basic Energy Sciences, Materials Sciences
and Engineering Division, of the U.S. Department of Energy
[DE-AC02-05CH11231]; Center for Advanced Molecular Photovoltaics
[KUS-C1-015-21]; King Abdullah University of Science and Technology
(KAUST); National Science Foundation
FX This work was supported by the Director, Office of Science, Office of
Basic Energy Sciences, Materials Sciences and Engineering Division, of
the U.S. Department of Energy under Contract No. DE-AC02-05CH11231, and
by the Center for Advanced Molecular Photovoltaics (Award No.
KUS-C1-015-21), supported by King Abdullah University of Science and
Technology (KAUST). C.H.W. and T.W.H. thank the National Science
Foundation for graduate research fellowships.
NR 43
TC 306
Z9 311
U1 7
U2 90
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD NOV 10
PY 2010
VL 132
IS 44
BP 15547
EP 15549
DI 10.1021/ja108115y
PG 3
WC Chemistry, Multidisciplinary
SC Chemistry
GA 676YL
UT WOS:000283955600031
PM 20945901
ER
PT J
AU Cohen, ML
AF Cohen, Marvin L.
TI PREDICTING AND EXPLAINING T-c AND OTHER PROPERTIES OF BCS
SUPERCONDUCTORS
SO MODERN PHYSICS LETTERS B
LA English
DT Review
DE Superconductivity; BCS theory; condensed matter physics; theoretical
physics
ID STRONG-COUPLED SUPERCONDUCTORS; TRANSITION-TEMPERATURE; CARBON
NANOTUBES; PHONON; PSEUDOPOTENTIALS; PRESSURES; METALS; SYSTEM; MGB2; SI
AB After providing some history and background material regarding the evolution of research on superconductivity, a description of the use of the BCS theory for the development of approaches for calculations and predictions of superconducting properties will be given. The emphasis is on estimates of T-c raising T-c, and predicting new superconductors. The basic analysis will be based on the BCS formalism with modern extensions. The focus here is on phonon mediated pairing of electrons as described in the original BCS paper augmented by current modifications and the use of modern calculational approaches
C1 [Cohen, Marvin L.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Cohen, Marvin L.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Cohen, ML (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM mlcohen@berkeley.edu
FU NSF [DMR07-05941]; Office of Science, Basic Energy Sciences, Materials
Sciences and Engineering Division of the U.S. Department of Energy
[DE-AC02-05CH11231]
FX This work was supported by the NSF grant DMR07-05941 and Director,
Office of Science, Basic Energy Sciences, Materials Sciences and
Engineering Division of the U.S. Department of Energy under contract No.
DE-AC02-05CH11231.
NR 57
TC 5
Z9 5
U1 1
U2 15
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 0217-9849
J9 MOD PHYS LETT B
JI Mod. Phys. Lett. B
PD NOV 10
PY 2010
VL 24
IS 28
BP 2755
EP 2768
DI 10.1142/S0217984910025292
PG 14
WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical
SC Physics
GA 661UJ
UT WOS:000282753300001
ER
PT J
AU Arenholz, E
van der Laan, G
McClure, A
Idzerda, Y
AF Arenholz, E.
van der Laan, G.
McClure, A.
Idzerda, Y.
TI Electronic and magnetic structure of GaxFe1-x thin films
SO PHYSICAL REVIEW B
LA English
DT Article
ID X-RAY-DICHROISM; MAGNETOCRYSTALLINE ANISOTROPY; FE-GA;
MAGNETOELASTICITY; SPECTRA; ALLOYS
AB The electronic as well as magnetic properties of GaxFe1-x films were studied by soft x-ray measurements. Using x-ray magnetic circular dichroism the Fe majority-spin band was found to be completely filled for x approximate to 0.3. With further enhanced Ga content, the Fe moment as well as the angular dependence of the x-ray magnetic linear dichroism decrease strongly, which we attribute to the formation of D0(3) precipitates. Moreover, the magnetocrystalline anisotropy drops significantly.
C1 [Arenholz, E.] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
[van der Laan, G.] Diamond Light Source, Didcot OX11 0DE, Oxon, England.
[McClure, A.; Idzerda, Y.] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA.
RP Arenholz, E (reprint author), Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
RI van der Laan, Gerrit/Q-1662-2015
OI van der Laan, Gerrit/0000-0001-6852-2495
FU U.S. Department of Energy [DE-AC02-05CH11231]; Army Research Office
[w911NF-08-1-0325]
FX Supported by the U.S. Department of Energy under Contract No.
DE-AC02-05CH11231 and Grant No. w911NF-08-1-0325 from the Army Research
Office.
NR 23
TC 14
Z9 14
U1 1
U2 10
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 10
PY 2010
VL 82
IS 18
AR 180405
DI 10.1103/PhysRevB.82.180405
PG 4
WC Physics, Condensed Matter
SC Physics
GA 678CJ
UT WOS:000284046300003
ER
PT J
AU Dimitrov, IK
Manley, ME
Shapiro, SM
Yang, J
Zhang, W
Chen, LD
Jie, Q
Ehlers, G
Podlesnyak, A
Camacho, J
Li, QA
AF Dimitrov, I. K.
Manley, M. E.
Shapiro, S. M.
Yang, J.
Zhang, W.
Chen, L. D.
Jie, Q.
Ehlers, G.
Podlesnyak, A.
Camacho, J.
Li, Qiang
TI Einstein modes in the phonon density of states of the single-filled
skutterudite Yb0.2Co4Sb12
SO PHYSICAL REVIEW B
LA English
DT Article
ID AUGMENTED-WAVE METHOD; VIBRATIONAL-MODES
AB Measurements of the phonon density of states by inelastic neutron time-of-flight scattering and specific-heat measurements along with first-principles calculations, provide compelling evidence for the existence of an Einstein oscillator (rattler) at omega(E1) approximate to 5.0 meV in the filled skutterudite Yb0.2Co4Sb12. Multiple dispersionless modes in the measured density of states of Yb0.2Co4Sb12 at intermediate transfer energies (14 <= omega <= 20 meV) are exhibited in both the experimental and theoretical density of states of the Yb-filled specimen. A peak at 12.4 meV is shown to coincide with a second Einstein mode at omega(F.2) approximate to 12.8 meV obtained from heat-capacity data. The local modes at intermediate transfer energies are attributed to altered properties of the host CoSb3 cage as a result of Yb filling. It is suggested that these modes are owed to a complementary mechanism for the scattering of heat-carrying phonons in addition to the mode observed at omega(E1) approximate to 5.0 meV. Our observations offer a plausible explanation for the significantly higher dimensionless figures of merit of filled skutterudites, compared to their parent compounds.
C1 [Dimitrov, I. K.; Shapiro, S. M.; Jie, Q.; Camacho, J.; Li, Qiang] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
[Manley, M. E.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Yang, J.; Zhang, W.; Chen, L. D.] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China.
[Ehlers, G.; Podlesnyak, A.] Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN 37831 USA.
RP Dimitrov, IK (reprint author), Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
EM idimitrov@bnl.gov; qiangli@bnl.gov
RI Instrument, CNCS/B-4599-2012; Jie, Qing/H-3780-2011; Zhang,
Wenqing/K-1236-2012; Podlesnyak, Andrey/A-5593-2013; Yang,
Jiong/K-6330-2014; Ehlers, Georg/B-5412-2008; Manley,
Michael/N-4334-2015; Jie, Qing/N-8673-2013
OI Podlesnyak, Andrey/0000-0001-9366-6319; Yang, Jiong/0000-0002-5862-5981;
Ehlers, Georg/0000-0003-3513-508X;
FU National Laboratory was supported by the Office of Science, U.S.
Department of Energy [DE-AC02-98CH10886]; U.S. Department of Energy by
Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; National
Basic Research Program of China [2007CB607500]; National Natural Science
Foundation of China [50821004]; National Science Foundation for
Distinguished Young Scholars of China [1150825205]; Scientific User
Facilities Division, Office of Basic Energy Sciences, U.S. Department of
Energy
FX The work at Brookhaven National Laboratory was supported by the Office
of Science, U.S. Department of Energy, under Contract No.
DE-AC02-98CH10886. M.E.M.' s work was performed under the auspices of
the U.S. Department of Energy by Lawrence Livermore National Laboratory
under Contract No. DE-AC52-07NA27344. This work was partly supported by
National Basic Research Program of China (Contract No. 2007CB607500),
National Natural Science Foundation of China (Contract No. 50821004),
and National Science Foundation for Distinguished Young Scholars of
China (Contract No. 1150825205). This Research at Oak Ridge National
Laboratory's Spallation Neutron Source was sponsored by the Scientific
User Facilities Division, Office of Basic Energy Sciences, U.S.
Department of Energy. I. K. D. wishes to thank Vyacheslav Solovyov for
stimulating discussions and critical reading of the manuscript.
NR 25
TC 31
Z9 31
U1 2
U2 39
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 10
PY 2010
VL 82
IS 17
AR 174301
DI 10.1103/PhysRevB.82.174301
PG 8
WC Physics, Condensed Matter
SC Physics
GA 678CE
UT WOS:000284045600005
ER
PT J
AU French, M
Mattsson, TR
Redmer, R
AF French, Martin
Mattsson, Thomas R.
Redmer, Ronald
TI Diffusion and electrical conductivity in water at ultrahigh pressures
SO PHYSICAL REVIEW B
LA English
DT Article
ID INITIO MOLECULAR-DYNAMICS; EQUATION-OF-STATE; MAGNETIC-FIELDS; MELTING
CURVE; ICE-X; H2O; URANUS; DENSITY; METALS; TEMPERATURES
AB We calculate the electrical conductivity of water for ultrahigh pressures up to 80 Mbar and temperatures up to 130 000 K as relevant for planetary physics by using ab initio molecular-dynamics simulations. The electron system is treated within density-functional theory and the electronic conductivity is obtained from an evaluation of the Kubo-Greenwood formula. The ionic conductivity is determined via diffusion coefficients. Our calculations reproduce most of the available experimental conductivity data within the error bars while the conductivity plateau measured by Mitchell and Nellis cannot be reproduced. At high densities a pressure-induced nonmetal-to-metal transition is predicted within the superionic phase. Furthermore, we study the influence of exchange and correlations on the electronic conductivity in more detail by applying a standard generalized gradient approximation and a hybrid functional as well that includes screened Fock exchange. The latter treatment yields a larger band gap and thus more reliable electrical conductivities, especially in the region of the nonmetal-to-metal transition. These results are relevant as input for future interior and dynamo models of giant, water-rich planets.
C1 [French, Martin; Redmer, Ronald] Univ Rostock, Inst Phys, D-18051 Rostock, Germany.
[Mattsson, Thomas R.] Sandia Natl Labs, HEDP Theory, Albuquerque, NM 87185 USA.
RP French, M (reprint author), Univ Rostock, Inst Phys, D-18051 Rostock, Germany.
RI Mattsson, Thomas/B-6057-2009; Redmer, Ronald/F-3046-2013
NR 68
TC 29
Z9 29
U1 7
U2 93
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 10
PY 2010
VL 82
IS 17
AR 174108
DI 10.1103/PhysRevB.82.174108
PG 9
WC Physics, Condensed Matter
SC Physics
GA 678CE
UT WOS:000284045600003
ER
PT J
AU Heidrich-Meisner, F
Gonzalez, I
Al-Hassanieh, KA
Feiguin, AE
Rozenberg, MJ
Dagotto, E
AF Heidrich-Meisner, F.
Gonzalez, I.
Al-Hassanieh, K. A.
Feiguin, A. E.
Rozenberg, M. J.
Dagotto, E.
TI Nonequilibrium electronic transport in a one-dimensional Mott insulator
SO PHYSICAL REVIEW B
LA English
DT Article
ID QUANTUM RENORMALIZATION-GROUPS; CARBON NANOTUBES; SYSTEMS; BREAKDOWN;
DYNAMICS; FIELDS
AB We calculate the nonequilibrium electronic transport properties of a one-dimensional interacting chain at half filling, coupled to noninteracting leads. The interacting chain is initially in a Mott insulator state that is driven out of equilibrium by applying a strong bias voltage between the leads. For bias voltages above a certain threshold we observe the breakdown of the Mott insulator state and the establishment of a steady-state electronic current through the system. Based on extensive time-dependent density-matrix renormalization-group simulations, we show that this steady-state current always has the same functional dependence on voltage, independent of the microscopic details of the model and we relate the value of the threshold to the Lieb-Wu gap. We frame our results in terms of the Landau-Zener dielectric breakdown picture. Finally, we also discuss the real-time evolution of the current, and characterize the current-carrying state resulting from the breakdown of the Mott insulator by computing the double occupancy, the spin structure factor, and the entanglement entropy.
C1 [Heidrich-Meisner, F.] Univ Munich, Dept Phys, Arnold Sommerfeld Ctr Theoret Phys, D-80333 Munich, Germany.
[Heidrich-Meisner, F.] Univ Munich, Ctr NanoSci, D-80333 Munich, Germany.
[Gonzalez, I.] Ctr Supercomputac Galicia, E-15705 Santiago De Compostela, Spain.
[Al-Hassanieh, K. A.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Feiguin, A. E.] Univ Wyoming, Dept Phys & Astron, Laramie, WY 82071 USA.
[Rozenberg, M. J.] Univ Paris 11, Phys Solides Lab, CNRS, UMR 8502, F-91405 Orsay, France.
[Rozenberg, M. J.] Univ Buenos Aires, FCEN, Dept Fis, RA-1428 Buenos Aires, DF, Argentina.
[Dagotto, E.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Dagotto, E.] Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA.
RP Heidrich-Meisner, F (reprint author), Univ Munich, Dept Phys, Arnold Sommerfeld Ctr Theoret Phys, D-80333 Munich, Germany.
EM heidrich-meisner@lmu.de
RI Heidrich-Meisner, Fabian/B-6228-2009;
OI Gonzalez, Ivan/0000-0002-6451-6909
FU MICINN [FIS2009-13520]; NSF [DMR-0955707]; U.S. Department of Energy,
Office of Basic Energy Sciences, Materials Sciences and Engineering
Division
FX We thank M. Daghofer, H. Onishi, G. Roux, and D. Schuricht for very
useful discussions. I.G. acknowledges support from MICINN through Grant
No. FIS2009-13520. A.E.F. thanks NSF for support through Grant No.
DMR-0955707. E.D.'s research was supported by the U.S. Department of
Energy, Office of Basic Energy Sciences, Materials Sciences and
Engineering Division.
NR 80
TC 44
Z9 44
U1 0
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 10
PY 2010
VL 82
IS 20
AR 205110
DI 10.1103/PhysRevB.82.205110
PG 11
WC Physics, Condensed Matter
SC Physics
GA 678CS
UT WOS:000284047800003
ER
PT J
AU Hering, EN
Borges, HA
Ramos, SM
Fontes, MB
Baggio-Saitovich, E
Continentino, MA
Bittar, EM
Ferreira, LM
Lora-Serrano, R
Gandra, FCG
Adriano, C
Pagliuso, PG
Moreno, NO
Sarrao, JL
Thompson, JD
AF Hering, E. N.
Borges, H. A.
Ramos, S. M.
Fontes, M. B.
Baggio-Saitovich, E.
Continentino, M. A.
Bittar, E. M.
Ferreira, L. Mendonca
Lora-Serrano, R.
Gandra, F. C. G.
Adriano, C.
Pagliuso, P. G.
Moreno, N. O.
Sarrao, J. L.
Thompson, J. D.
TI Residual superconducting phases in the disordered Ce2Rh1-xIrxIn8 alloys
SO PHYSICAL REVIEW B
LA English
DT Article
ID HEAVY-FERMION MATERIALS; UNCONVENTIONAL SUPERCONDUCTIVITY;
ANTIFERROMAGNETIC ORDER; PRESSURE; CERHIN5; MAGNETISM; CECOIN5
AB We report evidence of two superconducting phases in the Ce2Rh1-xIrxIn8 heavy fermion systems. One of these phases is pressure induced and occurs for a range of compositions situated near the Rh-rich extreme, consistent with the behavior observed for the pure Ce2RhIn8 compound. This superconducting region is expanded to higher critical temperatures and lower Rh concentrations with increasing pressure. It has a clear interplay with the established antiferromagnetic state, T-N similar to 2.8 K, suggesting that magnetic fluctuations are important for its realization. The second superconducting phase appears already at ambient pressure and it is characterized by a dome centered around x similar to 0.6 which, in sharp contrast with the first transition, is progressively eliminated by the application of pressure. These strikingly opposite behaviors under the same tuning parameter indicate the two transitions may have different natures. We compare these findings in the Ce2Rh1-xIrxIn8 alloys to its related CeRh1-xIrxIn5, arguing that the occurrence of the superconducting phases become unfavorable for the bilayers alloys due to higher dimensionality and stronger disorder. Further, we discuss whether the present results warrant similar claims with respect to the CeRh1-xIrxIn5 phase diagram and the possible nature of the superconducting phases.
C1 [Hering, E. N.; Ramos, S. M.; Fontes, M. B.; Baggio-Saitovich, E.; Continentino, M. A.] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil.
[Borges, H. A.] Pontificia Univ Catolica Rio de Janeiro, Dept Fis, BR-22453900 Rio De Janeiro, Brazil.
[Bittar, E. M.; Ferreira, L. Mendonca; Lora-Serrano, R.; Gandra, F. C. G.; Adriano, C.; Pagliuso, P. G.] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil.
[Ferreira, L. Mendonca] Univ Fed Pelotas UFPel, Inst Fis & Matemat, BR-96010900 Pelotas, RS, Brazil.
[Lora-Serrano, R.] Univ Fed Uberlandia, Inst Fis, BR-38400902 Uberlandia, MG, Brazil.
[Moreno, N. O.] Univ Fed Sergipe, Dept Fis, BR-49100000 Sao Cristovao, SE, Brazil.
[Sarrao, J. L.; Thompson, J. D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Hering, EN (reprint author), Ctr Brasileiro Pesquisas Fis, Rua Dr Xavier Sigaud 150, BR-22290180 Rio De Janeiro, Brazil.
EM pagliuso@ifi.unicamp.br
RI Ferreira, Leticie/C-4311-2012; Pagliuso, Pascoal/C-9169-2012; Moreno,
Nelson/H-1708-2012; Continentino, Mucio/B-7271-2013; Bittar,
Eduardo/B-6266-2008; Lora Serrano, Raimundo/L-6307-2016; Inst. of
Physics, Gleb Wataghin/A-9780-2017
OI Moreno, Nelson/0000-0002-1672-4340; Continentino,
Mucio/0000-0003-0167-8529; Bittar, Eduardo/0000-0002-2762-1312; Lora
Serrano, Raimundo/0000-0003-3777-2170;
FU CNPq; FAPERJ; FAPESP; CAPES (Brazil); U.S. DOE
FX We thank CNPq, FAPERJ, FAPESP, and CAPES (Brazil) and U.S. DOE for
financial support.
NR 38
TC 1
Z9 1
U1 0
U2 18
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 10
PY 2010
VL 82
IS 18
AR 184517
DI 10.1103/PhysRevB.82.184517
PG 7
WC Physics, Condensed Matter
SC Physics
GA 678CJ
UT WOS:000284046300010
ER
PT J
AU Lane, NJ
Vogel, SC
Barsoum, MW
AF Lane, Nina J.
Vogel, Sven C.
Barsoum, Michel W.
TI High-temperature neutron diffraction and the temperature-dependent
crystal structures of the MAX phases Ti3SiC2 and Ti3GeC2
SO PHYSICAL REVIEW B
LA English
DT Article
ID TEXTURE ANALYSIS; MECHANICAL-PROPERTIES; TOF DIFFRACTOMETER;
THERMAL-PROPERTIES; TENSILE CREEP; RANGE; HIPPO; CHEMISTRY; EXPANSION;
CARBIDE
AB Herein, we report on the crystal structures of the isostructural Ti3SiC2 and Ti3GeC2 phases determined by Rietveld analysis of neutron diffraction data in the 100 to 1100 degrees C temperature range. The results show that the Si and Ge atoms vibrate anisotropically with the highest amplitudes and within the basal planes. The equivalent isotropic thermal motion behavior does not differ significantly between the two phases; the anisotropic thermal motion, interatomic distances, and bond angles, however, show strikingly different behavior. Furthermore, while the Ti- Si bonds increase linearly with increasing temperature, the Ti- Ge bonds apparently do not. The anisotropic motion of the Ge atoms in the basal plane with the correlated motion between the Ti and the Ge atoms is invoked as a possible explanation. The volume expansions are 9.0(+/- 0.1) X 10(-6) K-1 and 8.7(+/- 0.1) X 10(-6) K-1 for Ti3SiC2 and Ti3GeC2, respectively; the expansions along the a and c axes are alpha(a) = 8.9 (+/- 0.1) X 10(-6) K-1 and alpha(c)= 9.4 (+/- 0.1) X 10(-6) K-1 for Ti3SiC2 and alpha(a) = 8.5(+/- 0.1) X 10(-6) K-1 and alpha(c) = 9.2(+/- 0.1) X 10(-6) K-1 for Ti3GeC2. A dramatic increase in error bars and a discontinuity in thermal motion parameters of the Ti-II atoms in Ti3GeC2 were also observed between 300 and 500 C during both heating and cooling. This discontinuity may in turn explain why the internal friction rises dramatically in that temperature range.
C1 [Lane, Nina J.; Barsoum, Michel W.] Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA.
[Vogel, Sven C.] Los Alamos Natl Lab, Los Alamos Neutron Sci Ctr, Los Alamos, NM 87545 USA.
RP Lane, NJ (reprint author), Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA.
RI Lujan Center, LANL/G-4896-2012;
OI Vogel, Sven C./0000-0003-2049-0361
FU U.S. Department of Energy's Office of Basic Energy Sciences; DOE
[DE-AC52-06NA25396]; Graduate Assistance in Areas of National Need for
Drexel Research and Education in Advanced Materials (GAANN-DREAM) under
the U. S. Department of Education [P200A060117]; Ceramics Division of
the National Science Foundation [DMR 0503711]; Department of Energy's
Office of Basic Energy Sciences under DOE [DE-AC52-06NA25396]
FX This work has benefited from the use of the Lujan Neutron Scattering
Center at LANSCE, which is funded by the U.S. Department of Energy's
Office of Basic Energy Sciences. Los Alamos National Laboratory is
operated by Los Alamos National Security LLC under DOE Contract No.
DE-AC52-06NA25396. This work was also partially funded by Graduate
Assistance in Areas of National Need for Drexel Research and Education
in Advanced Materials (GAANN-DREAM) under the U. S. Department of
Education Grant No. P200A060117 and the Ceramics Division of the
National Science Foundation (Grant No. DMR 0503711). M. W. B. would also
like to acknowledge the financial support of the Wheatley Scholar of the
Lujan Center at Los Alamos National Laboratory, which is funded by the
Department of Energy's Office of Basic Energy Sciences under DOE
Contract No. DE-AC52-06NA25396.
NR 39
TC 16
Z9 16
U1 1
U2 25
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 10
PY 2010
VL 82
IS 17
AR 174109
DI 10.1103/PhysRevB.82.174109
PG 11
WC Physics, Condensed Matter
SC Physics
GA 678CE
UT WOS:000284045600004
ER
PT J
AU Spataru, CD
AF Spataru, Catalin D.
TI Scaling properties of the Anderson model in the Kondo regime studied by
sigma G sigma W formalism
SO PHYSICAL REVIEW B
LA English
DT Article
ID SINGLE-ELECTRON TRANSISTOR; QUANTUM DOTS; PERTURBATION EXPANSION;
METALS; PHOTOEMISSION; ATOM
AB The symmetric Anderson model for a single impurity coupled to two leads is studied at strong interaction using the GW approximation within the sigma G sigma W formalism. We find that the low-energy properties show universal scaling behavior in the asymptotic regime. While the GW scaling functions are similar in form to the scaling functions known from the numerically exact solution, they are characterized by a different parameter value indicating that GW fails to describe correctly spin correlations between the impurity and lead electrons. We also compare the GW and exact Kondo scales for a broad range of the interaction strength. In contrast to the exponential behavior shown by the exact solution, the GW Kondo scale depends algebraically on the interaction strength.
C1 Sandia Natl Labs, Livermore, CA 94551 USA.
RP Spataru, CD (reprint author), Sandia Natl Labs, Livermore, CA 94551 USA.
EM cdspata@sandia.gov
FU United States Department of Energy [DE-AC01-94-AL85000]
FX I would like to thank Andrew Millis for useful suggestions and Silke
Biermann for an instructive discussion of the material in Ref. 28.
Sandia is a multiprogram laboratory operated by Sandia Corporation, a
Lockheed Martin Co., for the United States Department of Energy under
Contract No. DE-AC01-94-AL85000.
NR 49
TC 4
Z9 4
U1 0
U2 4
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 10
PY 2010
VL 82
IS 19
AR 195111
DI 10.1103/PhysRevB.82.195111
PG 9
WC Physics, Condensed Matter
SC Physics
GA 678CN
UT WOS:000284047100001
ER
PT J
AU Zhang, YW
Jiang, WL
Wang, CM
Namavar, F
Edmondson, PD
Zhu, ZH
Gao, F
Lian, J
Weber, WJ
AF Zhang, Yanwen
Jiang, Weilin
Wang, Chongmin
Namavar, Fereydoon
Edmondson, Philip D.
Zhu, Zihua
Gao, Fei
Lian, Jie
Weber, William J.
TI Grain growth and phase stability of nanocrystalline cubic zirconia under
ion irradiation
SO PHYSICAL REVIEW B
LA English
DT Article
ID OXYGEN; EVOLUTION; DEFECTS
AB Grain growth, oxygen stoichiometry, and phase stability of nanostructurally stabilized cubic zirconia (NSZ) are investigated under 2 MeV Au-ion bombardment at 160 and 400 K to doses up to 35 displacements per atom (dpa). The NSZ films are produced by ion-beam-assisted deposition technique at room temperature with an average grain size of 7.7 nm. The grain size increases with irradiation dose to similar to 30 nm at similar to 35 dpa. Slower grain growth is observed under 400 K irradiations, as compared to 160 K irradiations, indicating that the grain growth is not thermally activated and irradiation-induced grain growth is the dominating mechanism. While the cubic structure is retained and no new phases are identified after the high-dose irradiations, oxygen reduction in the irradiated NSZ films is detected. The ratio of O to Zr decreases from similar to 2.0 for the as-deposited films to similar to 1.65 after irradiation to similar to 35 dpa. The loss of oxygen suggests a significant increase in oxygen vacancies in nanocrystalline zirconia under ion irradiation. The oxygen deficiency may be essential in stabilizing the cubic phase to larger grain sizes.
C1 [Zhang, Yanwen; Weber, William J.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Zhang, Yanwen; Jiang, Weilin; Wang, Chongmin; Edmondson, Philip D.; Zhu, Zihua; Gao, Fei] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Namavar, Fereydoon] Univ Nebraska, Med Ctr, Omaha, NE 68198 USA.
[Lian, Jie] Rensselaer Polytech Inst, Troy, NY 12180 USA.
[Weber, William J.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
RP Zhang, YW (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, 4500S A148,MS 6138, Oak Ridge, TN 37831 USA.
EM zhangy1@ornl.gov
RI Weber, William/A-4177-2008; Edmondson, Philip/G-5371-2011; Gao,
Fei/H-3045-2012; Zhu, Zihua/K-7652-2012;
OI Weber, William/0000-0002-9017-7365; Jiang, Weilin/0000-0001-8302-8313;
Edmondson, Philip/0000-0001-8990-0870
FU Materials Science and Engineering Division, Office of Basic Energy
Sciences, U.S. Department of Energy; Battelle; UT-Battelle, LLC;
Department of Energy's Office of Biological and Environmental Research
FX This research was supported by the Materials Science and Engineering
Division, Office of Basic Energy Sciences, U.S. Department of Energy
with Battelle and with UT-Battelle, LLC. Experimental work was performed
using EMSL, a national scientific user facility sponsored by the
Department of Energy's Office of Biological and Environmental Research
and located at Pacific Northwest National Laboratory. M. H. Engelhard's
effort in XPS measurements is appreciated. Y.Z. is grateful for the
discussion with S. J. Zinkle.
NR 27
TC 53
Z9 53
U1 1
U2 35
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 10
PY 2010
VL 82
IS 18
AR 184105
DI 10.1103/PhysRevB.82.184105
PG 7
WC Physics, Condensed Matter
SC Physics
GA 678CJ
UT WOS:000284046300006
ER
PT J
AU Aaltonen, T
Gonzalez, BA
Amerio, S
Amidei, D
Anastassov, A
Annovi, A
Antos, J
Apollinari, G
Appel, JA
Apresyan, A
Arisawa, T
Artikov, A
Asaadi, J
Ashmanskas, W
Auerbach, B
Aurisano, A
Azfar, F
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Barria, P
Bartos, P
Bauce, M
Bauer, G
Bedeschi, F
Beecher, D
Behari, S
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Berry, E
Bhatti, A
Binkley, M
Bisello, D
Bizjak, I
Bland, KR
Blocker, C
Blumenfeld, B
Bocci, A
Bodek, A
Bortoletto, D
Boudreau, J
Boveia, A
Brau, B
Brigliadori, L
Brisuda, A
Bromberg, C
Brucken, E
Bucciantonio, M
Budagov, J
Budd, HS
Budd, S
Burkett, K
Busetto, G
Bussey, P
Buzatu, A
Cabrera, S
Calancha, C
Camarda, S
Campanelli, M
Campbell, M
Canelli, F
Canepa, A
Carls, B
Carlsmith, D
Carosi, R
Carrillo, S
Carron, S
Casal, B
Casarsa, M
Castro, A
Catastini, P
Cauz, D
Cavaliere, V
Cavalli-Sforza, M
Cerri, A
Cerrito, L
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Cho, K
Chokheli, D
Chou, JP
Chung, WH
Chung, YS
Ciobanu, CI
Ciocci, MA
Clark, A
Clark, D
Compostella, G
Convery, ME
Conway, J
Corbo, M
Cordelli, M
Cox, CA
Cox, DJ
Crescioli, F
Almenar, CC
Cuevas, J
Culbertson, R
Dagenhart, D
d'Ascenzo, N
Datta, M
de Barbaro, P
De Cecco, S
De Lorenzo, G
Dell'Orso, M
Deluca, C
Demortier, L
Deng, J
Deninno, M
Devoto, F
d'Errico, M
Di Canto, A
Di Ruzza, B
Dittmann, JR
D'Onofrio, M
Donati, S
Dong, P
Dorigo, T
Ebina, K
Elagin, A
Eppig, A
Erbacher, R
Errede, D
Errede, S
Ershaidat, N
Eusebi, R
Fang, HC
Farrington, S
Feindt, M
Fernandez, JP
Ferrazza, C
Field, R
Flanagan, G
Forrest, R
Frank, MJ
Franklin, M
Freeman, JC
Furic, I
Gallinaro, M
Galyardt, J
Garcia, JE
Garfinkel, AF
Garosi, P
Gerberich, H
Gerchtein, E
Giagu, S
Giakoumopoulou, V
Giannetti, P
Gibson, K
Ginsburg, CM
Giokaris, N
Giromini, P
Giunta, M
Giurgiu, G
Glagolev, V
Glenzinski, D
Gold, M
Goldin, D
Goldschmidt, N
Golossanov, A
Gomez, G
Gomez-Ceballos, G
Goncharov, M
Gonzalez, O
Gorelov, I
Goshaw, AT
Goulianos, K
Gresele, A
Grinstein, S
Grosso-Pilcher, C
Group, RC
da Costa, JG
Gunay-Unalan, Z
Haber, C
Hahn, SR
Halkiadakis, E
Hamaguchi, A
Han, JY
Happacher, F
Hara, K
Hare, D
Hare, M
Harr, RF
Hatakeyama, K
Hays, C
Heck, M
Heinrich, J
Herndon, M
Hewamanage, S
Hidas, D
Hocker, A
Hopkins, W
Horn, D
Hou, S
Hughes, RE
Hurwitz, M
Husemann, U
Hussain, N
Hussein, M
Huston, J
Introzzi, G
Iori, M
Ivanov, A
James, E
Jang, D
Jayatilaka, B
Jeon, EJ
Jha, MK
Jindariani, S
Johnson, W
Jones, M
Joo, KK
Jun, SY
Junk, TR
Kamon, T
Karchin, PE
Kato, Y
Ketchum, W
Keung, J
Khotilovich, V
Kilminster, B
Kim, DH
Kim, HS
Kim, HW
Kim, JE
Kim, MJ
Kim, SB
Kim, SH
Kim, YK
Kimura, N
Klimenko, S
Kondo, K
Kong, DJ
Konigsberg, J
Korytov, A
Kotwal, AV
Kreps, M
Kroll, J
Krop, D
Krumnack, N
Kruse, M
Krutelyov, V
Kuhr, T
Kurata, M
Kwang, S
Laasanen, AT
Lami, S
Lammel, S
Lancaster, M
Lander, RL
Lannon, K
Lath, A
Latino, G
Lazzizzera, I
LeCompte, T
Lee, E
Lee, HS
Lee, JS
Lee, SW
Leo, S
Leone, S
Lewis, JD
Lin, CJ
Linacre, J
Lindgren, M
Lipeles, E
Lister, A
Litvintsev, DO
Liu, C
Liu, Q
Liu, T
Lockwitz, S
Lockyer, NS
Loginov, A
Lucchesi, D
Lueck, J
Lujan, P
Lukens, P
Lungu, G
Lys, J
Lysak, R
Madrak, R
Maeshima, K
Makhoul, K
Maksimovic, P
Malik, S
Manca, G
Manousakis-Katsikakis, A
Margaroli, F
Marino, C
Martinez, M
Martinez-Ballarin, R
Mastrandrea, P
Mathis, M
Mattson, ME
Mazzanti, P
McFarland, KS
McIntyre, P
McNulty, R
Mehta, A
Mehtala, P
Menzione, A
Mesropian, C
Miao, T
Mietlicki, D
Mitra, A
Mitselmakher, G
Miyake, H
Moed, S
Moggi, N
Mondragon, MN
Moon, CS
Moore, R
Morello, MJ
Morlock, J
Fernandez, PM
Mukherjee, A
Muller, T
Murat, P
Mussini, M
Nachtman, J
Nagai, Y
Naganoma, J
Nakano, I
Napier, A
Nett, J
Neu, C
Neubauer, MS
Nielsen, J
Nodulman, L
Norniella, O
Nurse, E
Oakes, L
Oh, SH
Oh, YD
Oksuzian, I
Okusawa, T
Orava, R
Ortolan, L
Griso, SP
Pagliarone, C
Palencia, E
Papadimitriou, V
Paramonov, AA
Patrick, J
Pauletta, G
Paulini, M
Paus, C
Pellett, DE
Penzo, A
Phillips, TJ
Piacentino, G
Pianori, E
Pilot, J
Pitts, K
Plager, C
Pondrom, L
Potamianos, K
Poukhov, O
Prokoshin, F
Pronko, A
Ptohos, F
Pueschel, E
Punzi, G
Pursley, J
Rahaman, A
Ramakrishnan, V
Ranjan, N
Redondo, I
Renton, P
Rescigno, M
Rimondi, F
Ristori, L
Robson, A
Rodrigo, T
Rodriguez, T
Rogers, E
Rolli, S
Roser, R
Rossi, M
Ruffini, F
Ruiz, A
Russ, J
Rusu, V
Safonov, A
Sakumoto, WK
Santi, L
Sartori, L
Sato, K
Saveliev, V
Savoy-Navarro, A
Schlabach, P
Schmidt, A
Schmidt, EE
Schmidt, MP
Schmitt, M
Schwarz, T
Scodellaro, L
Scribano, A
Scuri, F
Sedov, A
Seidel, S
Seiya, Y
Semenov, A
Sforza, F
Sfyrla, A
Shalhout, SZ
Shears, T
Shepard, PF
Shimojima, M
Shiraishi, S
Shochet, M
Shreyber, I
Simonenko, A
Sinervo, P
Sissakian, A
Sliwa, K
Smith, JR
Snider, FD
Soha, A
Somalwar, S
Sorin, V
Squillacioti, P
Stanitzki, M
St Denis, R
Stelzer, B
Stelzer-Chilton, O
Stentz, D
Strologas, J
Strycker, GL
Sudo, Y
Sukhanov, A
Suslov, I
Takemasa, K
Takeuchi, Y
Tang, J
Tecchio, M
Teng, PK
Thom, J
Thome, J
Thompson, GA
Thomson, E
Ttito-Guzman, P
Tkaczyk, S
Toback, D
Tokar, S
Tollefson, K
Tomura, T
Tonelli, D
Torre, S
Torretta, D
Totaro, P
Trovato, M
Tu, Y
Turini, N
Ukegawa, F
Uozumi, S
Varganov, A
Vataga, E
Vazquez, F
Velev, G
Vellidis, C
Vidal, M
Vila, I
Vilar, R
Vogel, M
Volpi, G
Wagner, P
Wagner, RL
Wakisaka, T
Wallny, R
Wang, SM
Warburton, A
Waters, D
Weinberger, M
Wester, WC
Whitehouse, B
Whiteson, D
Wicklund, AB
Wicklund, E
Wilbur, S
Wick, F
Williams, HH
Wilson, JS
Wilson, P
Winer, BL
Wittich, P
Wolbers, S
Wolfe, H
Wright, T
Wu, X
Wu, Z
Yamamoto, K
Yamaoka, J
Yang, UK
Yang, YC
Yao, WM
Yeh, GP
Yi, K
Yoh, J
Yorita, K
Yoshida, T
Yu, GB
Yu, I
Yu, SS
Yun, JC
Zanetti, A
Zeng, Y
Zucchelli, S
AF Aaltonen, T.
Alvarez Gonzalez, B.
Amerio, S.
Amidei, D.
Anastassov, A.
Annovi, A.
Antos, J.
Apollinari, G.
Appel, J. A.
Apresyan, A.
Arisawa, T.
Artikov, A.
Asaadi, J.
Ashmanskas, W.
Auerbach, B.
Aurisano, A.
Azfar, F.
Badgett, W.
Barbaro-Galtieri, A.
Barnes, V. E.
Barnett, B. A.
Barria, P.
Bartos, P.
Bauce, M.
Bauer, G.
Bedeschi, F.
Beecher, D.
Behari, S.
Bellettini, G.
Bellinger, J.
Benjamin, D.
Beretvas, A.
Berry, E.
Bhatti, A.
Binkley, M.
Bisello, D.
Bizjak, I.
Bland, K. R.
Blocker, C.
Blumenfeld, B.
Bocci, A.
Bodek, A.
Bortoletto, D.
Boudreau, J.
Boveia, A.
Brau, B.
Brigliadori, L.
Brisuda, A.
Bromberg, C.
Brucken, E.
Bucciantonio, M.
Budagov, J.
Budd, H. S.
Budd, S.
Burkett, K.
Busetto, G.
Bussey, P.
Buzatu, A.
Cabrera, S.
Calancha, C.
Camarda, S.
Campanelli, M.
Campbell, M.
Canelli, F.
Canepa, A.
Carls, B.
Carlsmith, D.
Carosi, R.
Carrillo, S.
Carron, S.
Casal, B.
Casarsa, M.
Castro, A.
Catastini, P.
Cauz, D.
Cavaliere, V.
Cavalli-Sforza, M.
Cerri, A.
Cerrito, L.
Chen, Y. C.
Chertok, M.
Chiarelli, G.
Chlachidze, G.
Chlebana, F.
Cho, K.
Chokheli, D.
Chou, J. P.
Chung, W. H.
Chung, Y. S.
Ciobanu, C. I.
Ciocci, M. A.
Clark, A.
Clark, D.
Compostella, G.
Convery, M. E.
Conway, J.
Corbo, M.
Cordelli, M.
Cox, C. A.
Cox, D. J.
Crescioli, F.
Almenar, C. Cuenca
Cuevas, J.
Culbertson, R.
Dagenhart, D.
d'Ascenzo, N.
Datta, M.
de Barbaro, P.
De Cecco, S.
De Lorenzo, G.
Dell'Orso, M.
Deluca, C.
Demortier, L.
Deng, J.
Deninno, M.
Devoto, F.
d'Errico, M.
Di Canto, A.
Di Ruzza, B.
Dittmann, J. R.
D'Onofrio, M.
Donati, S.
Dong, P.
Dorigo, T.
Ebina, K.
Elagin, A.
Eppig, A.
Erbacher, R.
Errede, D.
Errede, S.
Ershaidat, N.
Eusebi, R.
Fang, H. C.
Farrington, S.
Feindt, M.
Fernandez, J. P.
Ferrazza, C.
Field, R.
Flanagan, G.
Forrest, R.
Frank, M. J.
Franklin, M.
Freeman, J. C.
Furic, I.
Gallinaro, M.
Galyardt, J.
Garcia, J. E.
Garfinkel, A. F.
Garosi, P.
Gerberich, H.
Gerchtein, E.
Giagu, S.
Giakoumopoulou, V.
Giannetti, P.
Gibson, K.
Ginsburg, C. M.
Giokaris, N.
Giromini, P.
Giunta, M.
Giurgiu, G.
Glagolev, V.
Glenzinski, D.
Gold, M.
Goldin, D.
Goldschmidt, N.
Golossanov, A.
Gomez, G.
Gomez-Ceballos, G.
Goncharov, M.
Gonzalez, O.
Gorelov, I.
Goshaw, A. T.
Goulianos, K.
Gresele, A.
Grinstein, S.
Grosso-Pilcher, C.
Group, R. C.
da Costa, J. Guimaraes
Gunay-Unalan, Z.
Haber, C.
Hahn, S. R.
Halkiadakis, E.
Hamaguchi, A.
Han, J. Y.
Happacher, F.
Hara, K.
Hare, D.
Hare, M.
Harr, R. F.
Hatakeyama, K.
Hays, C.
Heck, M.
Heinrich, J.
Herndon, M.
Hewamanage, S.
Hidas, D.
Hocker, A.
Hopkins, W.
Horn, D.
Hou, S.
Hughes, R. E.
Hurwitz, M.
Husemann, U.
Hussain, N.
Hussein, M.
Huston, J.
Introzzi, G.
Iori, M.
Ivanov, A.
James, E.
Jang, D.
Jayatilaka, B.
Jeon, E. J.
Jha, M. K.
Jindariani, S.
Johnson, W.
Jones, M.
Joo, K. K.
Jun, S. Y.
Junk, T. R.
Kamon, T.
Karchin, P. E.
Kato, Y.
Ketchum, W.
Keung, J.
Khotilovich, V.
Kilminster, B.
Kim, D. H.
Kim, H. S.
Kim, H. W.
Kim, J. E.
Kim, M. J.
Kim, S. B.
Kim, S. H.
Kim, Y. K.
Kimura, N.
Klimenko, S.
Kondo, K.
Kong, D. J.
Konigsberg, J.
Korytov, A.
Kotwal, A. V.
Kreps, M.
Kroll, J.
Krop, D.
Krumnack, N.
Kruse, M.
Krutelyov, V.
Kuhr, T.
Kurata, M.
Kwang, S.
Laasanen, A. T.
Lami, S.
Lammel, S.
Lancaster, M.
Lander, R. L.
Lannon, K.
Lath, A.
Latino, G.
Lazzizzera, I.
LeCompte, T.
Lee, E.
Lee, H. S.
Lee, J. S.
Lee, S. W.
Leo, S.
Leone, S.
Lewis, J. D.
Lin, C-J
Linacre, J.
Lindgren, M.
Lipeles, E.
Lister, A.
Litvintsev, D. O.
Liu, C.
Liu, Q.
Liu, T.
Lockwitz, S.
Lockyer, N. S.
Loginov, A.
Lucchesi, D.
Lueck, J.
Lujan, P.
Lukens, P.
Lungu, G.
Lys, J.
Lysak, R.
Madrak, R.
Maeshima, K.
Makhoul, K.
Maksimovic, P.
Malik, S.
Manca, G.
Manousakis-Katsikakis, A.
Margaroli, F.
Marino, C.
Martinez, M.
Martinez-Ballarin, R.
Mastrandrea, P.
Mathis, M.
Mattson, M. E.
Mazzanti, P.
McFarland, K. S.
McIntyre, P.
McNulty, R.
Mehta, A.
Mehtala, P.
Menzione, A.
Mesropian, C.
Miao, T.
Mietlicki, D.
Mitra, A.
Mitselmakher, G.
Miyake, H.
Moed, S.
Moggi, N.
Mondragon, M. N.
Moon, C. S.
Moore, R.
Morello, M. J.
Morlock, J.
Fernandez, P. Movilla
Mukherjee, A.
Muller, Th.
Murat, P.
Mussini, M.
Nachtman, J.
Nagai, Y.
Naganoma, J.
Nakano, I.
Napier, A.
Nett, J.
Neu, C.
Neubauer, M. S.
Nielsen, J.
Nodulman, L.
Norniella, O.
Nurse, E.
Oakes, L.
Oh, S. H.
Oh, Y. D.
Oksuzian, I.
Okusawa, T.
Orava, R.
Ortolan, L.
Griso, S. Pagan
Pagliarone, C.
Palencia, E.
Papadimitriou, V.
Paramonov, A. A.
Patrick, J.
Pauletta, G.
Paulini, M.
Paus, C.
Pellett, D. E.
Penzo, A.
Phillips, T. J.
Piacentino, G.
Pianori, E.
Pilot, J.
Pitts, K.
Plager, C.
Pondrom, L.
Potamianos, K.
Poukhov, O.
Prokoshin, F.
Pronko, A.
Ptohos, F.
Pueschel, E.
Punzi, G.
Pursley, J.
Rahaman, A.
Ramakrishnan, V.
Ranjan, N.
Redondo, I.
Renton, P.
Rescigno, M.
Rimondi, F.
Ristori, L.
Robson, A.
Rodrigo, T.
Rodriguez, T.
Rogers, E.
Rolli, S.
Roser, R.
Rossi, M.
Ruffini, F.
Ruiz, A.
Russ, J.
Rusu, V.
Safonov, A.
Sakumoto, W. K.
Santi, L.
Sartori, L.
Sato, K.
Saveliev, V.
Savoy-Navarro, A.
Schlabach, P.
Schmidt, A.
Schmidt, E. E.
Schmidt, M. P.
Schmitt, M.
Schwarz, T.
Scodellaro, L.
Scribano, A.
Scuri, F.
Sedov, A.
Seidel, S.
Seiya, Y.
Semenov, A.
Sforza, F.
Sfyrla, A.
Shalhout, S. Z.
Shears, T.
Shepard, P. F.
Shimojima, M.
Shiraishi, S.
Shochet, M.
Shreyber, I.
Simonenko, A.
Sinervo, P.
Sissakian, A.
Sliwa, K.
Smith, J. R.
Snider, F. D.
Soha, A.
Somalwar, S.
Sorin, V.
Squillacioti, P.
Stanitzki, M.
St Denis, R.
Stelzer, B.
Stelzer-Chilton, O.
Stentz, D.
Strologas, J.
Strycker, G. L.
Sudo, Y.
Sukhanov, A.
Suslov, I.
Takemasa, K.
Takeuchi, Y.
Tang, J.
Tecchio, M.
Teng, P. K.
Thom, J.
Thome, J.
Thompson, G. A.
Thomson, E.
Ttito-Guzman, P.
Tkaczyk, S.
Toback, D.
Tokar, S.
Tollefson, K.
Tomura, T.
Tonelli, D.
Torre, S.
Torretta, D.
Totaro, P.
Trovato, M.
Tu, Y.
Turini, N.
Ukegawa, F.
Uozumi, S.
Varganov, A.
Vataga, E.
Vazquez, F.
Velev, G.
Vellidis, C.
Vidal, M.
Vila, I.
Vilar, R.
Vogel, M.
Volpi, G.
Wagner, P.
Wagner, R. L.
Wakisaka, T.
Wallny, R.
Wang, S. M.
Warburton, A.
Waters, D.
Weinberger, M.
Wester, W. C., III
Whitehouse, B.
Whiteson, D.
Wicklund, A. B.
Wicklund, E.
Wilbur, S.
Wick, F.
Williams, H. H.
Wilson, J. S.
Wilson, P.
Winer, B. L.
Wittich, P.
Wolbers, S.
Wolfe, H.
Wright, T.
Wu, X.
Wu, Z.
Yamamoto, K.
Yamaoka, J.
Yang, U. K.
Yang, Y. C.
Yao, W-M
Yeh, G. P.
Yi, K.
Yoh, J.
Yorita, K.
Yoshida, T.
Yu, G. B.
Yu, I.
Yu, S. S.
Yun, J. C.
Zanetti, A.
Zeng, Y.
Zucchelli, S.
CA CDF Collaboration
TI Updated search for the flavor-changing neutral-current decay D-0 ->
mu(+)mu(-) in p(p)over-bar collisions at root s=1.96 TeV
SO PHYSICAL REVIEW D
LA English
DT Article
AB We report on a search for the flavor-changing neutral-current decay D-0 -> mu(+)mu(-) in p (p) over bar collisions at root s = 1.96 TeV using 360 pb(-1) of integrated luminosity collected by the CDF II detector at the Fermilab Tevatron collider. A displaced vertex trigger selects long-lived D-0 candidates in the mu(+)mu(-), pi(+)pi(-), and K-pi(+) decay modes. We use the Cabibbo-favored D-0 -> K-pi(+) channel to optimize the selection criteria in an unbiased manner, and the kinematically similar D-0 -> pi(+)pi(-) channel for normalization. We set an upper limit on the branching fraction B(D-0 -> mu(+)mu(-)) < 2.1 X 10(-7) (3.0 X 10(-7)) at the 90% (95%) confidence level.
C1 [Aaltonen, T.; Brucken, E.; Devoto, F.; Mehtala, P.; Orava, R.] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
[Aaltonen, T.; Brucken, E.; Devoto, F.; Mehtala, P.; Orava, R.] Helsinki Inst Phys, FIN-00014 Helsinki, Finland.
[Chen, Y. C.; Hou, S.; Mitra, A.; Teng, P. K.; Wang, S. M.] Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
[LeCompte, T.; Nodulman, L.; Paramonov, A. A.; Wicklund, A. B.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Giakoumopoulou, V.; Giokaris, N.; Manousakis-Katsikakis, A.; Vellidis, C.] Univ Athens, GR-15771 Athens, Greece.
[Camarda, S.; Cavalli-Sforza, M.; De Lorenzo, G.; Deluca, C.; Grinstein, S.; Martinez, M.; Ortolan, L.; Sorin, V.] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Bellaterra, Barcelona, Spain.
[Bland, K. R.; Dittmann, J. R.; Frank, M. J.; Hatakeyama, K.; Hewamanage, S.; Krumnack, N.; Wu, Z.] Baylor Univ, Waco, TX 76798 USA.
[Brigliadori, L.; Castro, A.; Deninno, M.; Jha, M. K.; Mazzanti, P.; Moggi, N.; Mussini, M.; Rimondi, F.] Ist Nazl Fis Nucl, I-40127 Bologna, Italy.
[Brigliadori, L.; Castro, A.; Mussini, M.; Rimondi, F.] Univ Bologna, I-40127 Bologna, Italy.
[Blocker, C.; Clark, D.] Brandeis Univ, Waltham, MA 02254 USA.
[Chertok, M.; Conway, J.; Cox, C. A.; Cox, D. J.; Erbacher, R.; Forrest, R.; Ivanov, A.; Johnson, W.; Lander, R. L.; Pellett, D. E.; Schwarz, T.; Shalhout, S. Z.; Smith, J. R.] Univ Calif Davis, Davis, CA 95616 USA.
[Plager, C.; Wallny, R.] Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
[Alvarez Gonzalez, B.; Casal, B.; Cuevas, J.; Gomez, G.; Palencia, E.; Rodrigo, T.; Ruiz, A.; Scodellaro, L.; Vila, I.; Vilar, R.] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain.
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[D'Onofrio, M.; Manca, G.; McNulty, R.; Mehta, A.; Shears, T.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
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[Bauer, G.; Gomez-Ceballos, G.; Goncharov, M.; Makhoul, K.; Paus, C.] MIT, Cambridge, MA 02139 USA.
[Buzatu, A.; Hussain, N.; Sinervo, P.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada.
[Buzatu, A.; Hussain, N.; Sinervo, P.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada.
[Buzatu, A.; Hussain, N.; Sinervo, P.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.] Univ Toronto, Toronto, ON M5S 1A7, Canada.
[Buzatu, A.; Hussain, N.; Sinervo, P.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
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[Bromberg, C.; Campanelli, M.; Gunay-Unalan, Z.; Hussein, M.; Huston, J.; Tollefson, K.] Michigan State Univ, E Lansing, MI 48824 USA.
[Shreyber, I.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
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[Nakano, I.] Okayama Univ, Okayama 7008530, Japan.
[Hamaguchi, A.; Kato, Y.; Okusawa, T.; Seiya, Y.; Wakisaka, T.; Yamamoto, K.; Yoshida, T.] Osaka City Univ, Osaka 588, Japan.
[Azfar, F.; Farrington, S.; Hays, C.; Linacre, J.; Oakes, L.; Renton, P.] Univ Oxford, Oxford OX1 3RH, England.
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[Canepa, A.; Heinrich, J.; Keung, J.; Kroll, J.; Lipeles, E.; Lockyer, N. S.; Neu, C.; Pianori, E.; Rodriguez, T.; Thomson, E.; Tu, Y.; Wagner, P.; Whiteson, D.; Williams, H. H.] Univ Penn, Philadelphia, PA 19104 USA.
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[Asaadi, J.; Aurisano, A.; Elagin, A.; Eusebi, R.; Goldin, D.; Kamon, T.; Khotilovich, V.; Krutelyov, V.; Lee, E.; Lee, S. W.; McIntyre, P.; Safonov, A.; Toback, D.; Weinberger, M.] Texas A&M Univ, College Stn, TX 77843 USA.
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RP Aaltonen, T (reprint author), Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
RI Piacentino, Giovanni/K-3269-2015; Martinez Ballarin,
Roberto/K-9209-2015; Gorelov, Igor/J-9010-2015; Canelli,
Florencia/O-9693-2016; Moon, Chang-Seong/J-3619-2014; Scodellaro,
Luca/K-9091-2014; Grinstein, Sebastian/N-3988-2014; Paulini,
Manfred/N-7794-2014; Russ, James/P-3092-2014; unalan,
zeynep/C-6660-2015; Lazzizzera, Ignazio/E-9678-2015; Cabrera Urban,
Susana/H-1376-2015; Garcia, Jose /H-6339-2015; ciocci, maria agnese
/I-2153-2015; Cavalli-Sforza, Matteo/H-7102-2015; Chiarelli,
Giorgio/E-8953-2012; Introzzi, Gianluca/K-2497-2015; Punzi,
Giovanni/J-4947-2012; Zeng, Yu/C-1438-2013; Ruiz, Alberto/E-4473-2011;
Annovi, Alberto/G-6028-2012; Ivanov, Andrew/A-7982-2013; Warburton,
Andreas/N-8028-2013; Kim, Soo-Bong/B-7061-2014; Lysak,
Roman/H-2995-2014; Robson, Aidan/G-1087-2011; De Cecco,
Sandro/B-1016-2012; St.Denis, Richard/C-8997-2012; manca,
giulia/I-9264-2012; Amerio, Silvia/J-4605-2012
OI Piacentino, Giovanni/0000-0001-9884-2924; Martinez Ballarin,
Roberto/0000-0003-0588-6720; Gorelov, Igor/0000-0001-5570-0133; Canelli,
Florencia/0000-0001-6361-2117; Moon, Chang-Seong/0000-0001-8229-7829;
Scodellaro, Luca/0000-0002-4974-8330; Grinstein,
Sebastian/0000-0002-6460-8694; Paulini, Manfred/0000-0002-6714-5787;
Russ, James/0000-0001-9856-9155; unalan, zeynep/0000-0003-2570-7611;
Lazzizzera, Ignazio/0000-0001-5092-7531; ciocci, maria agnese
/0000-0003-0002-5462; Chiarelli, Giorgio/0000-0001-9851-4816; Introzzi,
Gianluca/0000-0002-1314-2580; Punzi, Giovanni/0000-0002-8346-9052; Ruiz,
Alberto/0000-0002-3639-0368; Annovi, Alberto/0000-0002-4649-4398;
Ivanov, Andrew/0000-0002-9270-5643; Warburton,
Andreas/0000-0002-2298-7315;
NR 21
TC 8
Z9 9
U1 2
U2 15
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 10
PY 2010
VL 82
IS 9
AR 091105
DI 10.1103/PhysRevD.82.091105
PG 8
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 678CY
UT WOS:000284049300003
ER
PT J
AU Liao, JF
Shuryak, E
AF Liao, Jinfeng
Shuryak, Edward
TI Static (Q)over-barQ potentials and the magnetic component of QCD plasma
near T-c
SO PHYSICAL REVIEW D
LA English
DT Article
ID QUARK-GLUON PLASMA; POLYAKOV LOOP; CONFINEMENT; PHYSICS
AB Static quark-antiquark potential encodes important information on the chromodynamical interaction between color charges, and recent lattice results show its very nontrivial behavior near the deconfinement temperature T-c. In this paper we study such potential in the framework of the "magnetic scenario" for the near T-c QCD plasma, and particularly focus on the linear part ( as quantified by its slope, the tension) in the potential as well as the strong splitting between the free energy and internal energy. By using an analytic "ellipsoidal bag" model, we will quantitatively relate the free energy tension to the magnetic condensate density and relate the internal energy tension to the thermal monopole density. By converting the lattice results for static potential into density for thermal monopoles we find the density to be very large around T-c and indicate at quantum coherence, in good agreement with direct lattice calculation of such density. A few important consequences for heavy ion collisions phenomenology will also be discussed.
C1 [Liao, Jinfeng] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Liao, Jinfeng] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
[Shuryak, Edward] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
RP Liao, JF (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
EM jliao@bnl.gov; shuryak@tonic.physics.sunysb.edu
FU US Department of Energy under DOE [DE-AC02-98CH10886,
DE-AC02-05CH11231]; US-DOE [DE-FG-88ER40388]
FX The work of J. L. was partially supported by the US Department of Energy
under DOE Contract No. DE-AC02-98CH10886 and No. DE-AC02-05CH11231. The
work of E. S. was supported in parts by the US-DOE grant
DE-FG-88ER40388.
NR 65
TC 8
Z9 8
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
EI 1550-2368
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 10
PY 2010
VL 82
IS 9
AR 094007
DI 10.1103/PhysRevD.82.094007
PG 10
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 678CY
UT WOS:000284049300007
ER
PT J
AU Sanchez, PD
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Wang, WF
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Calderini, G
Chauveau, J
Hamon, O
Leruste, P
Marchiori, G
Ocariz, J
Prendki, J
Sitt, S
Biasini, M
Manoni, E
Rossi, A
Angelini, C
Batignani, G
Bettarini, S
Carpinelli, M
Casarosa, G
Cervelli, A
Forti, F
Giorgi, MA
Lusiani, A
Neri, N
Paoloni, E
Rizzo, G
Walsh, JJ
Pegna, DL
Lu, C
Olsen, J
Smith, AJS
Telnov, AV
Anulli, F
Baracchini, E
Cavoto, G
Faccini, R
Ferrarotto, F
Ferroni, F
Gaspero, M
Gioi, LL
Mazzoni, MA
Piredda, G
Renga, F
Hartmann, T
Leddig, T
Schroder, H
Waldi, R
Adye, T
Franek, B
Olaiya, EO
Wilson, FF
Emery, S
de Monchenault, GH
Vasseur, G
Yeche, C
Zito, M
Allen, MT
Aston, D
Bard, DJ
Bartoldus, R
Benitez, JF
Cartaro, C
Convery, MR
Dorfan, J
Dubois-Felsmann, GP
Dunwoodie, W
Field, RC
Sevilla, MF
Fulsom, BG
Gabareen, AM
Graham, MT
Grenier, P
Hast, C
Innes, WR
Kelsey, MH
Kim, H
Kim, P
Kocian, ML
Leith, DWGS
Li, S
Lindquist, B
Luitz, S
Luth, V
Lynch, HL
MacFarlane, DB
Marsiske, H
Muller, DR
Neal, H
Nelson, S
O'Grady, CP
Ofte, I
Perl, M
Pulliam, T
Ratcliff, BN
Roodman, A
Salnikov, AA
Santoro, V
Schindler, RH
Schwiening, J
Snyder, A
Su, D
Sullivan, MK
Sun, S
Suzuki, K
Thompson, JM
Va'vra, J
Wagner, AP
Weaver, M
West, CA
Wisniewski, WJ
Wittgen, M
Wright, DH
Wulsin, HW
Yarritu, AK
Young, CC
Ziegler, V
Chen, XR
Park, W
Purohit, MV
White, RM
Wilson, JR
Sekula, SJ
Bellis, M
Burchat, PR
Edwards, AJ
Miyashita, TS
Ahmed, S
Alam, MS
Ernst, JA
Pan, B
Saeed, MA
Zain, SB
Guttman, N
Soffer, A
Lund, P
Spanier, SM
Eckmann, R
Ritchie, JL
Ruland, AM
Schilling, CJ
Schwitters, RF
Wray, BC
Izen, JM
Lou, XC
Bianchi, F
Gamba, D
Pelliccioni, M
Bomben, M
Lanceri, L
Vitale, L
Lopez-March, N
Martinez-Vidal, F
Milanes, DA
Oyanguren, A
Albert, J
Banerjee, S
Choi, HHF
Hamano, K
King, GJ
Kowalewski, R
Lewczuk, MJ
Nugent, IM
Roney, JM
Sobie, RJ
Gershon, TJ
Harrison, PF
Latham, TE
Puccio, EMT
Band, HR
Dasu, S
Flood, KT
Pan, Y
Prepost, R
Vuosalo, CO
Wu, SL
AF Sanchez, P. del Amo
Lees, J. P.
Poireau, V.
Prencipe, E.
Tisserand, V.
Tico, J. Garra
Grauges, E.
Martinelli, M.
Palano, A.
Pappagallo, M.
Eigen, G.
Stugu, B.
Sun, L.
Battaglia, M.
Brown, D. N.
Hooberman, B.
Kerth, L. T.
Kolomensky, Yu. G.
Lynch, G.
Osipenkov, I. L.
Tanabe, T.
Hawkes, C. M.
Watson, A. T.
Koch, H.
Schroeder, T.
Asgeirsson, D. J.
Hearty, C.
Mattison, T. S.
McKenna, J. A.
Khan, A.
Randle-Conde, A.
Blinov, V. E.
Buzykaev, A. R.
Druzhinin, V. P.
Golubev, V. B.
Onuchin, A. P.
Serednyakov, S. I.
Skovpen, Yu. I.
Solodov, E. P.
Todyshev, K. Yu.
Yushkov, A. N.
Bondioli, M.
Curry, S.
Kirkby, D.
Lankford, A. J.
Mandelkern, M.
Martin, E. C.
Stoker, D. P.
Atmacan, H.
Gary, J. W.
Liu, F.
Long, O.
Vitug, G. M.
Campagnari, C.
Hong, T. M.
Kovalskyi, D.
Richman, J. D.
West, C.
Eisner, A. M.
Heusch, C. A.
Kroseberg, J.
Lockman, W. S.
Martinez, A. J.
Schalk, T.
Schumm, B. A.
Seiden, A.
Winstrom, L. O.
Cheng, C. H.
Doll, D. A.
Echenard, B.
Hitlin, D. G.
Ongmongkolkul, P.
Porter, F. C.
Rakitin, A. Y.
Andreassen, R.
Dubrovin, M. S.
Mancinelli, G.
Meadows, B. T.
Sokoloff, M. D.
Bloom, P. C.
Ford, W. T.
Gaz, A.
Nagel, M.
Nauenberg, U.
Smith, J. G.
Wagner, S. R.
Ayad, R.
Toki, W. H.
Jasper, H.
Karbach, T. M.
Merkel, J.
Petzold, A.
Spaan, B.
Wacker, K.
Kobel, M. J.
Schubert, K. R.
Schwierz, R.
Bernard, D.
Verderi, M.
Clark, P. J.
Playfer, S.
Watson, J. E.
Andreotti, M.
Bettoni, D.
Bozzi, C.
Calabrese, R.
Cecchi, A.
Cibinetto, G.
Fioravanti, E.
Franchini, P.
Luppi, E.
Munerato, M.
Negrini, M.
Petrella, A.
Piemontese, L.
Baldini-Ferroli, R.
Calcaterra, A.
de Sangro, R.
Finocchiaro, G.
Nicolaci, M.
Pacetti, S.
Patteri, P.
Peruzzi, I. M.
Piccolo, M.
Rama, M.
Zallo, A.
Contri, R.
Guido, E.
Lo Vetere, M.
Monge, M. R.
Passaggio, S.
Patrignani, C.
Robutti, E.
Tosi, S.
Bhuyan, B.
Prasad, V.
Lee, C. L.
Morii, M.
Adametz, A.
Marks, J.
Uwer, U.
Bernlochner, F. U.
Ebert, M.
Lacker, H. M.
Lueck, T.
Volk, A.
Dauncey, P. D.
Tibbetts, M.
Behera, P. K.
Mallik, U.
Chen, C.
Cochran, J.
Crawley, H. B.
Dong, L.
Meyer, W. T.
Prell, S.
Rosenberg, E. I.
Rubin, A. E.
Gritsan, A. V.
Guo, Z. J.
Arnaud, N.
Davier, M.
Derkach, D.
da Costa, J. Firmino
Grosdidier, G.
Le Diberder, F.
Lutz, A. M.
Malaescu, B.
Perez, A.
Roudeau, P.
Schune, M. H.
Serrano, J.
Sordini, V.
Stocchi, A.
Wang, L.
Wormser, G.
Lange, D. J.
Wright, D. M.
Bingham, I.
Chavez, C. A.
Coleman, J. P.
Fry, J. R.
Gabathuler, E.
Gamet, R.
Hutchcroft, D. E.
Payne, D. J.
Touramanis, C.
Bevan, A. J.
Di Lodovico, F.
Sacco, R.
Sigamani, M.
Cowan, G.
Paramesvaran, S.
Wren, A. C.
Brown, D. N.
Davis, C. L.
Denig, A. G.
Fritsch, M.
Gradl, W.
Hafner, A.
Alwyn, K. E.
Bailey, D.
Barlow, R. J.
Jackson, G.
Lafferty, G. D.
Anderson, J.
Cenci, R.
Jawahery, A.
Roberts, D. A.
Simi, G.
Tuggle, J. M.
Dallapiccola, C.
Salvati, E.
Cowan, R.
Dujmic, D.
Sciolla, G.
Zhao, M.
Lindemann, D.
Patel, P. M.
Robertson, S. H.
Schram, M.
Biassoni, P.
Lazzaro, A.
Lombardo, V.
Palombo, F.
Stracka, S.
Cremaldi, L.
Godang, R.
Kroeger, R.
Sonnek, P.
Summers, D. J.
Nguyen, X.
Simard, M.
Taras, P.
De Nardo, G.
Monorchio, D.
Onorato, G.
Sciacca, C.
Raven, G.
Snoek, H. L.
Jessop, C. P.
Knoepfel, K. J.
LoSecco, J. M.
Wang, W. F.
Corwin, L. A.
Honscheid, K.
Kass, R.
Morris, J. P.
Blount, N. L.
Brau, J.
Frey, R.
Igonkina, O.
Kolb, J. A.
Rahmat, R.
Sinev, N. B.
Strom, D.
Strube, J.
Torrence, E.
Castelli, G.
Feltresi, E.
Gagliardi, N.
Margoni, M.
Morandin, M.
Posocco, M.
Rotondo, M.
Simonetto, F.
Stroili, R.
Ben-Haim, E.
Bonneaud, G. R.
Briand, H.
Calderini, G.
Chauveau, J.
Hamon, O.
Leruste, Ph.
Marchiori, G.
Ocariz, J.
Prendki, J.
Sitt, S.
Biasini, M.
Manoni, E.
Rossi, A.
Angelini, C.
Batignani, G.
Bettarini, S.
Carpinelli, M.
Casarosa, G.
Cervelli, A.
Forti, F.
Giorgi, M. A.
Lusiani, A.
Neri, N.
Paoloni, E.
Rizzo, G.
Walsh, J. J.
Pegna, D. Lopes
Lu, C.
Olsen, J.
Smith, A. J. S.
Telnov, A. V.
Anulli, F.
Baracchini, E.
Cavoto, G.
Faccini, R.
Ferrarotto, F.
Ferroni, F.
Gaspero, M.
Gioi, L. Li
Mazzoni, M. A.
Piredda, G.
Renga, F.
Hartmann, T.
Leddig, T.
Schroeder, H.
Waldi, R.
Adye, T.
Franek, B.
Olaiya, E. O.
Wilson, F. F.
Emery, S.
de Monchenault, G. Hamel
Vasseur, G.
Yeche, Ch.
Zito, M.
Allen, M. T.
Aston, D.
Bard, D. J.
Bartoldus, R.
Benitez, J. F.
Cartaro, C.
Convery, M. R.
Dorfan, J.
Dubois-Felsmann, G. P.
Dunwoodie, W.
Field, R. C.
Sevilla, M. Franco
Fulsom, B. G.
Gabareen, A. M.
Graham, M. T.
Grenier, P.
Hast, C.
Innes, W. R.
Kelsey, M. H.
Kim, H.
Kim, P.
Kocian, M. L.
Leith, D. W. G. S.
Li, S.
Lindquist, B.
Luitz, S.
Luth, V.
Lynch, H. L.
MacFarlane, D. B.
Marsiske, H.
Muller, D. R.
Neal, H.
Nelson, S.
O'Grady, C. P.
Ofte, I.
Perl, M.
Pulliam, T.
Ratcliff, B. N.
Roodman, A.
Salnikov, A. A.
Santoro, V.
Schindler, R. H.
Schwiening, J.
Snyder, A.
Su, D.
Sullivan, M. K.
Sun, S.
Suzuki, K.
Thompson, J. M.
Va'vra, J.
Wagner, A. P.
Weaver, M.
West, C. A.
Wisniewski, W. J.
Wittgen, M.
Wright, D. H.
Wulsin, H. W.
Yarritu, A. K.
Young, C. C.
Ziegler, V.
Chen, X. R.
Park, W.
Purohit, M. V.
White, R. M.
Wilson, J. R.
Sekula, S. J.
Bellis, M.
Burchat, P. R.
Edwards, A. J.
Miyashita, T. S.
Ahmed, S.
Alam, M. S.
Ernst, J. A.
Pan, B.
Saeed, M. A.
Zain, S. B.
Guttman, N.
Soffer, A.
Lund, P.
Spanier, S. M.
Eckmann, R.
Ritchie, J. L.
Ruland, A. M.
Schilling, C. J.
Schwitters, R. F.
Wray, B. C.
Izen, J. M.
Lou, X. C.
Bianchi, F.
Gamba, D.
Pelliccioni, M.
Bomben, M.
Lanceri, L.
Vitale, L.
Lopez-March, N.
Martinez-Vidal, F.
Milanes, D. A.
Oyanguren, A.
Albert, J.
Banerjee, Sw.
Choi, H. H. F.
Hamano, K.
King, G. J.
Kowalewski, R.
Lewczuk, M. J.
Nugent, I. M.
Roney, J. M.
Sobie, R. J.
Gershon, T. J.
Harrison, P. F.
Latham, T. E.
Puccio, E. M. T.
Band, H. R.
Dasu, S.
Flood, K. T.
Pan, Y.
Prepost, R.
Vuosalo, C. O.
Wu, S. L.
CA BABAR Collaboration
TI Measurement of the absolute branching fractions for D-s(-) -> l(-)
(nu)over-bar(l) and extraction of the decay constant f(Ds)
SO PHYSICAL REVIEW D
LA English
DT Article
ID PHYSICS
AB The absolute branching fractions for the decays D-s(-) -> l(-) (nu) over bar (l) (l = e, mu, or tau) are measured using a data sample corresponding to an integrated luminosity of 521 fb(-1) collected at center-of-mass energies near 10.58 GeV with the BABAR detector at the PEP-II e(+)e(-) collider at SLAC. The number of D-s(-) mesons is determined by reconstructing the recoiling system DKX gamma in events of the type e(+)e(-) -> DKXDs*(-), where D-s*(-) -> D-s(-) gamma and X represents additional pions from fragmentation. The D-s(-) -> l(-) nu(l) events are detected by full or partial reconstruction of the recoiling system DKX gamma l. The branching fraction measurements are combined to determine the D-s(-) decay constant f(Ds) (258.6 +/- 6.4 +/- 7:5) MeV, where the first uncertainty is statistical and the second is systematic.
C1 [Sanchez, P. del Amo; Lees, J. P.; Poireau, V.; Prencipe, E.; Tisserand, V.] Univ Savoie, CNRS, IN2P3, LAPP, F-74991 Annecy Le Vieux, France.
[Tico, J. Garra; Grauges, E.] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain.
[Martinelli, M.; Palano, A.; Pappagallo, M.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Martinelli, M.; Palano, A.; Pappagallo, M.] Univ Bari, Dipartimento Fis, I-70126 Bari, Italy.
[Eigen, G.; Stugu, B.; Sun, L.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway.
[Battaglia, M.; Brown, D. N.; Hooberman, B.; Kerth, L. T.; Kolomensky, Yu. G.; Lynch, G.; Osipenkov, I. L.; Tanabe, T.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Battaglia, M.; Brown, D. N.; Hooberman, B.; Kerth, L. T.; Kolomensky, Yu. G.; Lynch, G.; Osipenkov, I. L.; Tanabe, T.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[Hawkes, C. M.; Watson, A. T.] Univ Birmingham, Birmingham B15 2TT, W Midlands, England.
[Koch, H.; Schroeder, T.] Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany.
[Asgeirsson, D. J.; Hearty, C.; Mattison, T. S.; McKenna, J. A.] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada.
[Khan, A.; Randle-Conde, A.] Brunel Univ, Uxbridge UB8 3PH, Middx, England.
[Blinov, V. E.; Buzykaev, A. R.; Druzhinin, V. P.; Golubev, V. B.; Onuchin, A. P.; Serednyakov, S. I.; Skovpen, Yu. I.; Solodov, E. P.; Todyshev, K. Yu.; Yushkov, A. N.] Budker Inst Nucl Phys, Novosibirsk 630090, Russia.
[Bondioli, M.; Curry, S.; Kirkby, D.; Lankford, A. J.; Mandelkern, M.; Martin, E. C.; Stoker, D. P.] Univ Calif Irvine, Irvine, CA 92697 USA.
[Atmacan, H.; Gary, J. W.; Liu, F.; Long, O.; Vitug, G. M.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Campagnari, C.; Hong, T. M.; Kovalskyi, D.; Richman, J. D.; West, C.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Eisner, A. M.; Heusch, C. A.; Kroseberg, J.; Lockman, W. S.; Martinez, A. J.; Schalk, T.; Schumm, B. A.; Seiden, A.; Winstrom, L. O.] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Cheng, C. H.; Doll, D. A.; Echenard, B.; Hitlin, D. G.; Ongmongkolkul, P.; Porter, F. C.; Rakitin, A. Y.] CALTECH, Pasadena, CA 91125 USA.
[Andreassen, R.; Dubrovin, M. S.; Mancinelli, G.; Meadows, B. T.; Sokoloff, M. D.] Univ Cincinnati, Cincinnati, OH 45221 USA.
[Bloom, P. C.; Ford, W. T.; Gaz, A.; Nagel, M.; Nauenberg, U.; Smith, J. G.; Wagner, S. R.] Univ Colorado, Boulder, CO 80309 USA.
[Ayad, R.; Toki, W. H.] Colorado State Univ, Ft Collins, CO 80523 USA.
[Jasper, H.; Karbach, T. M.; Merkel, J.; Petzold, A.; Spaan, B.; Wacker, K.] Tech Univ Dortmund, Fak Phys, D-44221 Dortmund, Germany.
[Kobel, M. J.; Schubert, K. R.; Schwierz, R.] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany.
[Bernard, D.; Verderi, M.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France.
[Clark, P. J.; Playfer, S.; Watson, J. E.] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
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[Andreotti, M.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Fioravanti, E.; Franchini, P.; Luppi, E.; Munerato, M.; Negrini, M.; Petrella, A.] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy.
[Baldini-Ferroli, R.; Calcaterra, A.; de Sangro, R.; Finocchiaro, G.; Nicolaci, M.; Pacetti, S.; Patteri, P.; Peruzzi, I. M.; Piccolo, M.; Rama, M.; Zallo, A.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[Contri, R.; Guido, E.; Lo Vetere, M.; Monge, M. R.; Passaggio, S.; Patrignani, C.; Robutti, E.; Tosi, S.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
[Contri, R.; Guido, E.; Lo Vetere, M.; Monge, M. R.; Patrignani, C.; Tosi, S.] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy.
[Bhuyan, B.; Prasad, V.] Indian Inst Technol Guwahati, Gauhati 781039, Assam, India.
[Lee, C. L.; Morii, M.] Harvard Univ, Cambridge, MA 02138 USA.
[Adametz, A.; Marks, J.; Uwer, U.] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany.
[Bernlochner, F. U.; Ebert, M.; Lacker, H. M.; Lueck, T.; Volk, A.] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.
[Dauncey, P. D.; Tibbetts, M.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
[Behera, P. K.; Mallik, U.] Univ Iowa, Iowa City, IA 52242 USA.
[Chen, C.; Cochran, J.; Crawley, H. B.; Dong, L.; Meyer, W. T.; Prell, S.; Rosenberg, E. I.; Rubin, A. E.] Iowa State Univ, Ames, IA 50011 USA.
[Gritsan, A. V.; Guo, Z. J.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
[Arnaud, N.; Davier, M.; Derkach, D.; da Costa, J. Firmino; Grosdidier, G.; Le Diberder, F.; Lutz, A. M.; Malaescu, B.; Perez, A.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wang, L.; Wormser, G.] CNRS, IN2P3, Lab Accelerateur Lineaire, F-91898 Orsay, France.
[Arnaud, N.; Davier, M.; Derkach, D.; da Costa, J. Firmino; Grosdidier, G.; Le Diberder, F.; Lutz, A. M.; Malaescu, B.; Perez, A.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wang, L.; Wormser, G.] Univ Paris 11, Ctr Sci Orsay, F-91898 Orsay, France.
[Lange, D. J.; Wright, D. M.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Bingham, I.; Chavez, C. A.; Coleman, J. P.; Fry, J. R.; Gabathuler, E.; Gamet, R.; Hutchcroft, D. E.; Payne, D. J.; Touramanis, C.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
[Bevan, A. J.; Di Lodovico, F.; Sacco, R.; Sigamani, M.] Univ London, London E1 4NS, England.
[Cowan, G.; Paramesvaran, S.; Wren, A. C.] Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England.
[Brown, D. N.; Davis, C. L.] Univ Louisville, Louisville, KY 40292 USA.
[Denig, A. G.; Fritsch, M.; Gradl, W.; Hafner, A.] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany.
[Alwyn, K. E.; Bailey, D.; Barlow, R. J.; Jackson, G.; Lafferty, G. D.] Univ Manchester, Manchester M13 9PL, Lancs, England.
[Anderson, J.; Cenci, R.; Jawahery, A.; Roberts, D. A.; Simi, G.; Tuggle, J. M.] Univ Maryland, College Pk, MD 20742 USA.
[Dallapiccola, C.; Salvati, E.] Univ Massachusetts, Amherst, MA 01003 USA.
[Cowan, R.; Dujmic, D.; Sciolla, G.; Zhao, M.] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA.
[Lindemann, D.; Patel, P. M.; Robertson, S. H.; Schram, M.] McGill Univ, Montreal, PQ H3A 2T8, Canada.
[Biassoni, P.; Lazzaro, A.; Lombardo, V.; Palombo, F.; Stracka, S.] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy.
[Biassoni, P.; Lazzaro, A.; Palombo, F.; Stracka, S.] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.
[Cremaldi, L.; Godang, R.; Kroeger, R.; Sonnek, P.; Summers, D. J.] Univ Mississippi, University, MS 38677 USA.
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[De Nardo, G.; Monorchio, D.; Onorato, G.; Sciacca, C.] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy.
[De Nardo, G.; Monorchio, D.; Onorato, G.; Sciacca, C.] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy.
[Raven, G.; Snoek, H. L.] Natl Inst Nucl Phys & High Energy Phys, NIKHEF, NL-1009 DB Amsterdam, Netherlands.
[Jessop, C. P.; Knoepfel, K. J.; LoSecco, J. M.; Wang, W. F.] Univ Notre Dame, Notre Dame, IN 46556 USA.
[Corwin, L. A.; Honscheid, K.; Kass, R.; Morris, J. P.] Ohio State Univ, Columbus, OH 43210 USA.
[Blount, N. L.; Brau, J.; Frey, R.; Igonkina, O.; Kolb, J. A.; Rahmat, R.; Sinev, N. B.; Strom, D.; Strube, J.; Torrence, E.] Univ Oregon, Eugene, OR 97403 USA.
[Castelli, G.; Feltresi, E.; Gagliardi, N.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Adametz, A.; Castelli, G.; Feltresi, E.; Gagliardi, N.; Margoni, M.; Simonetto, F.; Stroili, R.] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy.
[Ben-Haim, E.; Bonneaud, G. R.; Briand, H.] Univ Paris 07, Univ Paris 06, CNRS, Lab Phys Nucl & Hautes Energies,IN2P3, F-75252 Paris, France.
[Biasini, M.; Manoni, E.; Rossi, A.] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy.
[Peruzzi, I. M.; Biasini, M.; Manoni, E.; Rossi, A.] Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Casarosa, G.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Lusiani, A.; Neri, N.; Paoloni, E.; Rizzo, G.; Walsh, J. J.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Casarosa, G.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Neri, N.; Paoloni, E.; Rizzo, G.] Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy.
[Lusiani, A.] Scuola Normale Super Pisa, I-56127 Pisa, Italy.
[Pegna, D. Lopes; Lu, C.; Olsen, J.; Smith, A. J. S.; Telnov, A. V.] Princeton Univ, Princeton, NJ 08544 USA.
[Anulli, F.; Baracchini, E.; Cavoto, G.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Gioi, L. Li; Mazzoni, M. A.; Piredda, G.; Renga, F.] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy.
[Baracchini, E.; Faccini, R.; Ferroni, F.; Gaspero, M.; Renga, F.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
[Hartmann, T.; Leddig, T.; Schroeder, H.; Waldi, R.] Univ Rostock, D-18051 Rostock, Germany.
[Adye, T.; Franek, B.; Olaiya, E. O.; Wilson, F. F.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Emery, S.; de Monchenault, G. Hamel; Vasseur, G.; Yeche, Ch.; Zito, M.] CEA, SPP, Ctr Saclay, F-91191 Gif Sur Yvette, France.
[Allen, M. T.; Aston, D.; Bard, D. J.; Bartoldus, R.; Benitez, J. F.; Cartaro, C.; Convery, M. R.; Dorfan, J.; Dubois-Felsmann, G. P.; Dunwoodie, W.; Field, R. C.; Sevilla, M. Franco; Fulsom, B. G.; Gabareen, A. M.; Graham, M. T.; Grenier, P.; Hast, C.; Innes, W. R.; Kelsey, M. H.; Kim, H.; Kim, P.; Kocian, M. L.; Leith, D. W. G. S.; Li, S.; Lindquist, B.; Luitz, S.; Luth, V.; Lynch, H. L.; MacFarlane, D. B.; Marsiske, H.; Muller, D. R.; Neal, H.; Nelson, S.; O'Grady, C. P.; Ofte, I.; Perl, M.; Pulliam, T.; Ratcliff, B. N.; Roodman, A.; Salnikov, A. A.; Santoro, V.; Schindler, R. H.; Schwiening, J.; Snyder, A.; Su, D.; Sullivan, M. K.; Sun, S.; Suzuki, K.; Thompson, J. M.; Va'vra, J.; Wagner, A. P.; West, C. A.; Wisniewski, W. J.; Wittgen, M.; Wright, D. H.; Wulsin, H. W.; Yarritu, A. K.; Young, C. C.; Ziegler, V.] SLAC Natl Accelerator Lab, Stanford, CA 94309 USA.
[Chen, X. R.; Park, W.; Purohit, M. V.; White, R. M.; Wilson, J. R.] Univ S Carolina, Columbia, SC 29208 USA.
[Sekula, S. J.] So Methodist Univ, Dallas, TX 75275 USA.
[Bellis, M.; Burchat, P. R.; Edwards, A. J.; Miyashita, T. S.] Stanford Univ, Stanford, CA 94305 USA.
[Ahmed, S.; Alam, M. S.; Ernst, J. A.; Pan, B.; Saeed, M. A.; Zain, S. B.] SUNY Albany, Albany, NY 12222 USA.
[Guttman, N.; Soffer, A.] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel.
[Lund, P.; Spanier, S. M.] Univ Tennessee, Knoxville, TN 37996 USA.
[Eckmann, R.; Ritchie, J. L.; Ruland, A. M.; Schilling, C. J.; Schwitters, R. F.; Wray, B. C.] Univ Texas Austin, Austin, TX 78712 USA.
[Izen, J. M.; Lou, X. C.] Univ Texas Dallas, Richardson, TX 75083 USA.
[Bianchi, F.; Gamba, D.; Pelliccioni, M.] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy.
[Bianchi, F.; Gamba, D.; Pelliccioni, M.] Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy.
[Bomben, M.; Lanceri, L.; Vitale, L.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Bomben, M.; Lanceri, L.; Vitale, L.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy.
[Lopez-March, N.; Martinez-Vidal, F.; Milanes, D. A.; Oyanguren, A.] Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain.
[Albert, J.; Banerjee, Sw.; Choi, H. H. F.; Hamano, K.; King, G. J.; Kowalewski, R.; Lewczuk, M. J.; Nugent, I. M.; Roney, J. M.; Sobie, R. J.] Univ Victoria, Victoria, BC V8W 3P6, Canada.
[Gershon, T. J.; Harrison, P. F.; Latham, T. E.; Puccio, E. M. T.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Band, H. R.; Dasu, S.; Flood, K. T.; Pan, Y.; Prepost, R.; Vuosalo, C. O.; Wu, S. L.] Univ Wisconsin, Madison, WI 53706 USA.
[Carpinelli, M.] Univ Sassari, I-07100 Sassari, Italy.
RP Sanchez, PD (reprint author), Univ Savoie, CNRS, IN2P3, LAPP, F-74991 Annecy Le Vieux, France.
RI Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere,
Maurizio/J-5049-2012; Lusiani, Alberto/N-2976-2015; Morandin,
Mauro/A-3308-2016; Lusiani, Alberto/A-3329-2016; Stracka,
Simone/M-3931-2015; Di Lodovico, Francesca/L-9109-2016; Pappagallo,
Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Frey,
Raymond/E-2830-2016; Luppi, Eleonora/A-4902-2015; White,
Ryan/E-2979-2015; Calabrese, Roberto/G-4405-2015; Neri,
Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo,
Marcello/I-6043-2012; de Sangro, Riccardo/J-2901-2012; Saeed, Mohammad
Alam/J-7455-2012; Negrini, Matteo/C-8906-2014; Patrignani,
Claudia/C-5223-2009; Monge, Maria Roberta/G-9127-2012; Oyanguren,
Arantza/K-6454-2014
OI Raven, Gerhard/0000-0002-2897-5323; Martinez Vidal,
F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere,
Maurizio/0000-0002-6520-4480; Lusiani, Alberto/0000-0002-6876-3288;
Morandin, Mauro/0000-0003-4708-4240; Lusiani,
Alberto/0000-0002-6876-3288; Stracka, Simone/0000-0003-0013-4714; Di
Lodovico, Francesca/0000-0003-3952-2175; Pappagallo,
Marco/0000-0001-7601-5602; Calcaterra, Alessandro/0000-0003-2670-4826;
Frey, Raymond/0000-0003-0341-2636; Luppi, Eleonora/0000-0002-1072-5633;
White, Ryan/0000-0003-3589-5900; Calabrese, Roberto/0000-0002-1354-5400;
Neri, Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965;
Rotondo, Marcello/0000-0001-5704-6163; de Sangro,
Riccardo/0000-0002-3808-5455; Saeed, Mohammad Alam/0000-0002-3529-9255;
Negrini, Matteo/0000-0003-0101-6963; Patrignani,
Claudia/0000-0002-5882-1747; Monge, Maria Roberta/0000-0003-1633-3195;
Oyanguren, Arantza/0000-0002-8240-7300
FU SLAC; DOE; NSF (USA); NSERC (Canada); CEA; CNRS (France) [CNRS-IN2P3];
BMBF; DFG (Germany); INFN (Italy); FOM (The Netherlands); NFR (Norway);
MES (Russia); MICIIN (Spain); STFC (United Kingdom); Marie Curie EIF
(European Union); A. P. Sloan Foundation (USA); Binational Science
Foundation (USA-Israel)
FX We are grateful for the excellent luminosity and machine conditions
provided by our PEP-II colleagues, and for the substantial dedicated
effort from the computing organizations that support BABAR. The
collaborating institutions wish to thank SLAC for its support and kind
hospitality. This work is supported by DOE and NSF (USA), NSERC
(Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN
(Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MICIIN
(Spain), STFC (United Kingdom). Individuals have received support from
the Marie Curie EIF (European Union), the A. P. Sloan Foundation (USA),
and the Binational Science Foundation (USA-Israel).
NR 23
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U1 0
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 10
PY 2010
VL 82
IS 9
AR 091103
DI 10.1103/PhysRevD.82.091103
PG 8
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 678CY
UT WOS:000284049300001
ER
PT J
AU Nobre, GPA
Dietrich, FS
Escher, JE
Thompson, IJ
Dupuis, M
Terasaki, J
Engel, J
AF Nobre, G. P. A.
Dietrich, F. S.
Escher, J. E.
Thompson, I. J.
Dupuis, M.
Terasaki, J.
Engel, J.
TI Coupled-Channel Calculation of Nonelastic Cross Sections Using a
Density-Functional Structure Model
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID NUCLEAR-STRUCTURE APPROACH; OPTICAL-MODEL; INELASTIC-SCATTERING; PB-208;
ENERGY; RANGE; CA-40
AB A microscopic calculation of reaction cross sections for nucleon-nucleus scattering was performed by coupling the elastic channel to all particle-hole excitations in the target and one-nucleon pickup channels. The particle-hole states may be regarded as doorway states through which the flux flows to more complicated configurations, and subsequently to long-lived compound nucleus resonances. Target excitations for Ca-40,Ca-48, Ni-58, Zr-90, and Sm-144 were described in a random-phase framework using a Skyrme functional. Reaction cross sections obtained agreed very well with experimental data and predictions of a fitted optical potential. Couplings between inelastic states were found to be negligible, while the pickup channels contribute significantly. For the first time observed absorptions are completely accounted for by explicit channel coupling, for incident energies between 10 and 40 MeV.
C1 [Nobre, G. P. A.; Dietrich, F. S.; Escher, J. E.; Thompson, I. J.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Dupuis, M.] CEA, DAM, DIF, F-91297 Arpajon, France.
[Terasaki, J.; Engel, J.] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA.
RP Nobre, GPA (reprint author), Lawrence Livermore Natl Lab, POB 808,L-414, Livermore, CA 94551 USA.
RI Escher, Jutta/E-1965-2013
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
under SciDAC [DE-AC52-07NA27344, DE-FC02-07ER41457]
FX This work was performed under the auspices of the U.S. Department of
Energy by Lawrence Livermore National Laboratory under Contract No.
DE-AC52-07NA27344, and under SciDAC Contract No. DE-FC02-07ER41457.
NR 32
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U2 4
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 10
PY 2010
VL 105
IS 20
AR 202502
DI 10.1103/PhysRevLett.105.202502
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 678DP
UT WOS:000284052700005
PM 21231224
ER
PT J
AU Bettencourt, LMA
Lobo, J
Strumsky, D
West, GB
AF Bettencourt, Luis M. A.
Lobo, Jose
Strumsky, Deborah
West, Geoffrey B.
TI Urban Scaling and Its Deviations: Revealing the Structure of Wealth,
Innovation and Crime across Cities
SO PLOS ONE
LA English
DT Article
ID INCREASING RETURNS; CITY SIZE; LIFE; PRODUCTIVITY; GROWTH
AB With urban population increasing dramatically worldwide, cities are playing an increasingly critical role in human societies and the sustainability of the planet. An obstacle to effective policy is the lack of meaningful urban metrics based on a quantitative understanding of cities. Typically, linear per capita indicators are used to characterize and rank cities. However, these implicitly ignore the fundamental role of nonlinear agglomeration integral to the life history of cities. As such, per capita indicators conflate general nonlinear effects, common to all cities, with local dynamics, specific to each city, failing to provide direct measures of the impact of local events and policy. Agglomeration nonlinearities are explicitly manifested by the superlinear power law scaling of most urban socioeconomic indicators with population size, all with similar exponents (similar to 1.15). As a result larger cities are disproportionally the centers of innovation, wealth and crime, all to approximately the same degree. We use these general urban laws to develop new urban metrics that disentangle dynamics at different scales and provide true measures of local urban performance. New rankings of cities and a novel and simpler perspective on urban systems emerge. We find that local urban dynamics display long-term memory, so cities under or outperforming their size expectation maintain such (dis)advantage for decades. Spatiotemporal correlation analyses reveal a novel functional taxonomy of U. S. metropolitan areas that is generally not organized geographically but based instead on common local economic models, innovation strategies and patterns of crime.
C1 [Bettencourt, Luis M. A.; West, Geoffrey B.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA.
[Bettencourt, Luis M. A.; West, Geoffrey B.] Los Alamos Natl Lab, CNLS, Los Alamos, NM USA.
[Bettencourt, Luis M. A.; West, Geoffrey B.] Santa Fe Inst, Santa Fe, NM 87501 USA.
[Lobo, Jose] Arizona State Univ, Sch Human Evolut & Social Change, Tempe, AZ USA.
[Lobo, Jose] Arizona State Univ, WP Carey Sch Business, Tempe, AZ USA.
[Strumsky, Deborah] Univ N Carolina, Dept Geog & Earth Sci, Charlotte, NC 28223 USA.
RP Bettencourt, LMA (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA.
EM lmbett@lanl.gov
RI Strumsky, Deborah /F-5795-2013
FU James S. McDonnell Foundation 21st Century Science Initiative;
Rockefeller Foundation; National Science Foundation [CBET-0939958, PHY
0202180]; Los Alamos National Laboratory
FX This work was partially supported by a James S. McDonnell Foundation
21st Century Science Initiative in Studying Complex Systems Research
Award (http://www.jsmf.org/programs/cs/), the Rockefeller Foundation
(http://www.rockefellerfoundation.org/), the National Science Foundation
grants CBET-0939958 and PHY 0202180, and the Los Alamos National
Laboratory Laboratory Directed Research and Development (LDRD) program
(http://www.lanl.gov/science/ldrd/). The funders had no role in study
design, data collection and analysis, decision to publish, or
preparation of the manuscript.
NR 50
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PI SAN FRANCISCO
PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD NOV 10
PY 2010
VL 5
IS 11
AR e13541
DI 10.1371/journal.pone.0013541
PG 9
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 677ZN
UT WOS:000284036800004
PM 21085659
ER
PT J
AU Gutfraind, A
AF Gutfraind, Alexander
TI Optimizing Topological Cascade Resilience Based on the Structure of
Terrorist Networks
SO PLOS ONE
LA English
DT Article
ID COMPLEX NETWORKS
AB Complex socioeconomic networks such as information, finance and even terrorist networks need resilience to cascades - to prevent the failure of a single node from causing a far-reaching domino effect. We show that terrorist and guerrilla networks are uniquely cascade-resilient while maintaining high efficiency, but they become more vulnerable beyond a certain threshold. We also introduce an optimization method for constructing networks with high passive cascade resilience. The optimal networks are found to be based on cells, where each cell has a star topology. Counterintuitively, we find that there are conditions where networks should not be modified to stop cascades because doing so would come at a disproportionate loss of efficiency. Implementation of these findings can lead to more cascade-resilient networks in many diverse areas.
C1 Los Alamos Natl Lab, Ctr Nonlinear Studies & T5 D6, Los Alamos, NM USA.
RP Gutfraind, A (reprint author), Los Alamos Natl Lab, Ctr Nonlinear Studies & T5 D6, Los Alamos, NM USA.
EM agutfraind.research@gmail.com
RI Gutfraind, Alexander/E-9641-2011;
OI GUTFRAIND, ALEXANDER/0000-0002-3324-2220
FU Department of Energy at the Los Alamos National Laboratory [LA-UR
10-01563, DE-AC52-06NA25396]; Defense Threat Reduction Agency
FX This work was supported by the Department of Energy at the Los Alamos
National Laboratory (LA-UR 10-01563) under contract DE-AC52-06NA25396
through the Laboratory Directed Research and Development program, and by
the Defense Threat Reduction Agency. The funders had no role in study
design, data collection and analysis, decision to publish, or
preparation of the manuscript.
NR 39
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PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD NOV 10
PY 2010
VL 5
IS 11
AR e13448
DI 10.1371/journal.pone.0013448
PG 7
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 677ZN
UT WOS:000284036800003
PM 21085710
ER
PT J
AU Chen, BY
Sysoeva, TA
Chowdhury, S
Guo, LA
De Carlo, S
Hanson, JA
Yang, H
Nixon, BT
AF Chen, Baoyu
Sysoeva, Tatyana A.
Chowdhury, Saikat
Guo, Liang
De Carlo, Sacha
Hanson, Jeffrey A.
Yang, Haw
Nixon, B. Tracy
TI Engagement of Arginine Finger to ATP Triggers Large Conformational
Changes in NtrC1 AAA+ ATPase for Remodeling Bacterial RNA Polymerase
SO STRUCTURE
LA English
DT Article
ID ENHANCER-BINDING PROTEINS; TRANSCRIPTIONAL ACTIVATOR; ESCHERICHIA-COLI;
RECEIVER DOMAINS; STRUCTURAL BASIS; AAA(+); LIKELIHOOD; SIGMA-54;
MOTIONS; SYSTEM
AB The NtrC-like AAA+ ATPases control virulence and other important bacterial activities through delivering mechanical work to sigma 54-RNA polymerase to activate transcription from sigma 54-dependent genes. We report the first crystal structure for such an ATPase, NtrC1 of Aquifex aeolicus, in which the catalytic arginine engages the gamma-phosphate of ATP. Comparing the new structure with those previously known for apo and ADP-bound states supports a rigid-body displacement model that is consistent with large-scale conformational changes observed by low-resolution methods. First, the arginine finger induces rigid-body roll, extending surface loops above the plane of the ATPase ring to bind sigma 54. Second, ATP hydrolysis permits Pi release and retraction of the arginine with a reversed roll, remodeling sigma 54-RNAP. This model provides a fresh perspective on how ATPase subunits interact within the ring-ensemble to promote transcription, directing attention to structural changes on the arginine-finger side of an ATP-bound interface.
C1 [Chen, Baoyu; Sysoeva, Tatyana A.; Chowdhury, Saikat; Nixon, B. Tracy] Penn State Univ, Dept Biochem & Mol Biol, University Pk, PA 16802 USA.
[Guo, Liang] IIT, BioCAT APS Argonne Natl Lab, Argonne, IL 60439 USA.
[De Carlo, Sacha] CUNY, Dept Chem, New York, NY 10031 USA.
[De Carlo, Sacha] CUNY, Inst MacroMol Assemblies, New York, NY 10031 USA.
[Hanson, Jeffrey A.; Yang, Haw] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Hanson, Jeffrey A.; Yang, Haw] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA.
RP Nixon, BT (reprint author), Penn State Univ, Dept Biochem & Mol Biol, University Pk, PA 16802 USA.
EM btn1@psu.edu
RI Sysoeva, Tatyana/B-2018-2013; Chen, Baoyu/A-7072-2011; ID,
BioCAT/D-2459-2012
OI Chen, Baoyu/0000-0002-6366-159X;
FU NIH [R01 GM069937-01A3, RR-08630]; U.S. Department of Energy, Basic
Energy Sciences, Office of Science [W-31-109-ENG-38, DE-AC02-05CH11231];
NIN-NCRR [1S10RR023439-01]
FX We thank Borries Demeler for facilitating our use of ATSAS software to
perform ab initio modeling and averaging of SAXS data on the BCF cluster
at the University of Texas Health Science Center at San Antonio, Neela
Yennawar and Hemant Yennawar of the X-ray core facility at the Huck
Institutes of Life Sciences, Penn State for help growing crystals and
collecting initial diffraction data, and David Wemmer and Joseph
Bachelor for help collecting and processing data on beamline 8.3.1 at
the Advanced Light Source. The work was funded by NIH grant R01
GM069937-01A3 to B.T.N., and Use of the Advanced Photon Source was
supported by the U.S. Department of Energy, Basic Energy Sciences,
Office of Science, under contract no. W-31-109-ENG-38, and the Advanced
Light Source is similarly supported under contract no.
DE-AC02-05CH11231. BioCAT is a National Institutes of Health-supported
Research Center, grant no. RR-08630. The X-ray core facility at Penn
State was partially supported by NIN-NCRR grant 1S10RR023439-01. The
authors declare that they have no competing financial interests.
NR 35
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U2 7
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0969-2126
J9 STRUCTURE
JI Structure
PD NOV 10
PY 2010
VL 18
IS 11
BP 1420
EP 1430
DI 10.1016/j.str.2010.08.018
PG 11
WC Biochemistry & Molecular Biology; Biophysics; Cell Biology
SC Biochemistry & Molecular Biology; Biophysics; Cell Biology
GA 682XA
UT WOS:000284435100006
PM 21070941
ER
PT J
AU Hammel, M
Yu, YP
Fang, SJ
Lees-Miller, SP
Tainer, JA
AF Hammel, Michal
Yu, Yaping
Fang, Shujuan
Lees-Miller, Susan P.
Tainer, John A.
TI XLF Regulates Filament Architecture of the XRCC4.Ligase IV Complex
SO STRUCTURE
LA English
DT Article
ID DNA-LIGASE-IV; X-RAY-SCATTERING; REPAIR PROTEIN XRCC4; END-JOINING
FACTOR; CRYSTAL-STRUCTURE; BREAK REPAIR; V(D)J RECOMBINATION;
PHOSPHORYLATION SITES; STRUCTURAL-ANALYSES; INTERACTS
AB DNA ligase IV (LigIV) is critical for non homologous end joining (NHEJ), the major DNA double-strand break (DSB) repair pathway in human cells, and LigIV activity is regulated by XRCC4 and XLF (XRCC4-like factor) interactions. Here, we employ small angle X-ray scattering (SAXS) data to characterize three-dimensional arrangements in solution for full-length XRCC4, XRCC4 in complex with LigIV tandem BRCT domains and XLF, plus the XRCC4.XLF.BRCT2 complex. XRCC4 forms tetramers mediated through a head-to-head interface, and the XRCC4 C-terminal coiled-coil region folds back on itself to support this interaction. The interaction between XLF and XRCC4 is also mediated via head-to-head interactions. In the XLF.XRCC4.BRCT complex, alternating repeating units of XLF and XRCC4.BRCT place the BRCT domain on one side of the filament. Collective results identify XRCC4 and XLF filaments suitable to align DNA molecules and function to facilitate LigIV end joining required for DSB repair in vivo.
C1 [Hammel, Michal] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
[Yu, Yaping; Fang, Shujuan; Lees-Miller, Susan P.] Univ Calgary, Dept Biochem & Mol Biol, Calgary, AB T2N 4N1, Canada.
[Yu, Yaping; Fang, Shujuan; Lees-Miller, Susan P.] Univ Calgary, So Alberta Canc Res Inst, Calgary, AB T2N 4N1, Canada.
[Tainer, John A.] Scripps Res Inst, Dept Mol Biol, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA.
[Tainer, John A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Dept Mol Biol, Berkeley, CA 94720 USA.
RP Hammel, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
EM mhammel@lbl.gov; leesmill@ucalgary.ca; jat@scripps.edu
FU National Institutes of Health (NIH) [CA92584]; Canadian Institutes of
Health Research [69139]
FX We thank the Berkeley Lab Advanced Light Source and SIBYLS beamline
staff at 12.3.1 for aiding solution scattering data collection and
members of the Lees-Miller laboratory for comments. This work was
supported by the National Institutes of Health (NIH) Structural Cell
Biology of DNA Repair Machines P01 grant CA92584 (J.A.T./S.P.L.-M.) as
well as operating grant 69139 from the Canadian Institutes of Health
Research (S.P.L.-M.).
NR 44
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PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0969-2126
J9 STRUCTURE
JI Structure
PD NOV 10
PY 2010
VL 18
IS 11
BP 1431
EP 1442
DI 10.1016/j.str.2010.09.009
PG 12
WC Biochemistry & Molecular Biology; Biophysics; Cell Biology
SC Biochemistry & Molecular Biology; Biophysics; Cell Biology
GA 682XA
UT WOS:000284435100007
PM 21070942
ER
PT J
AU Rinaldi, J
Wu, JA
Yang, J
Ralston, CY
Sankaran, B
Moreno, S
Taylor, SS
AF Rinaldi, Jimena
Wu, Jian
Yang, Jie
Ralston, Corie Y.
Sankaran, Banumathi
Moreno, Silvia
Taylor, Susan S.
TI Structure of Yeast Regulatory Subunit: A Glimpse into the Evolution of
PKA Signaling
SO STRUCTURE
LA English
DT Article
ID DEPENDENT PROTEIN-KINASE; CAMP-BINDING DOMAINS;
SACCHAROMYCES-CEREVISIAE; RI-ALPHA; CRYSTAL-STRUCTURE; ACTIVATION;
MECHANISMS; DIVERSITY; CHANNELS; REVEALS
AB The major cAMP receptors in eukaryotes are the regulatory (R) subunits of PKA, an allosteric enzyme conserved in fungi through mammals. While mammals have four R-subunit genes, Saccharomyces cerevisiae has only one, Bcy1. To achieve a molecular understanding of PKA activation in yeast and to explore the evolution of cyclic-nucleotide binding (CNB) domains, we solved the structure of cAMP-bound Bcy1(168-416). Surprisingly, the relative orientation of the two CNB domains in Bcy1 is very different from mammalian R-subunits. This quaternary structure is defined primarily by a fungi-specific sequence in the hinge between the alpha B/alpha C helices of the CNB-A domain. The unique interface between the two CNB domains in Bcyl defines the allosteric mechanism for cooperative activation of PKA by cAMP. Some interface motifs are isoform-specific while others, although conserved, play surprisingly different roles in each R-subunit. Phylogenetic analysis shows that structural differences in Bcyl are shared by fungi of the subphylum Saccharomycotina.
C1 [Rinaldi, Jimena; Moreno, Silvia] Univ Buenos Aires, Dept Biol Chem, Fac Ciencias Exactas & Nat, RA-1428 Buenos Aires, DF, Argentina.
[Wu, Jian; Yang, Jie; Taylor, Susan S.] Univ Calif San Diego, Dept Chem Biochem & Pharmacol, Howard Hughes Med Inst, La Jolla, CA 92093 USA.
[Ralston, Corie Y.; Sankaran, Banumathi] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley Ctr Struct Biol, Berkeley, CA 94720 USA.
RP Moreno, S (reprint author), Univ Buenos Aires, Dept Biol Chem, Fac Ciencias Exactas & Nat, Ciudad Univ,Pabellon 2, RA-1428 Buenos Aires, DF, Argentina.
EM smoreno@qb.fcen.uba.ar; staylor@ucsd.edu
FU CONICET [PIP 0519]; NIH [GM34921]; ANPCYT [PICT 15-38212]; UBACYT
[X-151]
FX We specifically thank De-Bin Huang for assistance with the structure
determination, Alexander Kornev for critical review and figure
preparation, and Natarajan Kannan for helping with the CHAIN alignment.
We also thank Nick Nyguen at the UCSD Chemistry X-ray source for
assistance with data collection. J.R. held a doctoral fellowship from
CONICET. This Investigation was supported by a NIH grant (GM34921) to
S.S.T., and grants from ANPCYT (PICT 15-38212), UBACYT (X-151) and
CONICET (PIP 0519) to S.M.
NR 41
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U1 0
U2 3
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0969-2126
J9 STRUCTURE
JI Structure
PD NOV 10
PY 2010
VL 18
IS 11
BP 1471
EP 1482
DI 10.1016/j.str.2010.08.013
PG 12
WC Biochemistry & Molecular Biology; Biophysics; Cell Biology
SC Biochemistry & Molecular Biology; Biophysics; Cell Biology
GA 682XA
UT WOS:000284435100011
PM 21070946
ER
PT J
AU Wisedchaisri, G
Dranow, DM
Lie, TJ
Bonanno, JB
Patskovsky, Y
Ozyurt, SA
Sauder, JM
Almo, SC
Wasserman, SR
Burley, SK
Leigh, JA
Gonen, T
AF Wisedchaisri, Goragot
Dranow, David M.
Lie, Thomas J.
Bonanno, Jeffrey B.
Patskovsky, Yury
Ozyurt, Sinem A.
Sauder, J. Michael
Almo, Steven C.
Wasserman, Stephen R.
Burley, Stephen K.
Leigh, John A.
Gonen, Tamir
TI Structural Underpinnings of Nitrogen Regulation by the Prototypical
Nitrogen-Responsive Transcriptional Factor NrpR
SO STRUCTURE
LA English
DT Article
ID METHANOCOCCUS-MARIPALUDIS; MYCOBACTERIUM-TUBERCULOSIS; AUTOMATED
DOCKING; CRYSTAL-STRUCTURE; REPRESSOR NRPR; BINDING; PROTEIN;
EXPRESSION; 2-OXOGLUTARATE; VISUALIZATION
AB Plants and microorganisms reduce environmental inorganic nitrogen to ammonium, which then enters various metabolic pathways solely via conversion of 2-oxoglutarate (2OG) to glutamate and glutamine. Cellular 2OG concentrations increase during nitrogen starvation. We recently identified a family of 2OG-sensing proteins the nitrogen regulatory protein NrpR that bind DNA and repress transcription of nitrogen assimilation genes. We used X-ray crystallography to determine the structure of NrpR regulatory domain. We identified the NrpR 2OG-binding cleft and show that residues predicted to interact directly with 2OG are conserved among diverse classes of 2OG-binding proteins. We show that high levels of 2OG inhibit NrpRs ability to bind DNA. Electron microscopy analyses document that NrpR adopts different quaternary structures in its inhibited 2OG-bound state compared with its active apo state. Our results indicate that upon 2OG release, NrpR repositions its DNA-binding domains correctly for optimal interaction with DNA thereby enabling gene repression.
C1 [Wisedchaisri, Goragot; Dranow, David M.; Gonen, Tamir] Univ Washington, Dept Biochem, Seattle, WA 98195 USA.
[Lie, Thomas J.; Leigh, John A.] Univ Washington, Dept Microbiol, Seattle, WA 98195 USA.
[Bonanno, Jeffrey B.; Patskovsky, Yury; Almo, Steven C.] Albert Einstein Coll Med, Dept Biochem, Bronx, NY 10461 USA.
[Ozyurt, Sinem A.; Sauder, J. Michael; Burley, Stephen K.] Eli Lilly & Co, Lilly Biotechnol Ctr, San Diego, CA 92121 USA.
[Wasserman, Stephen R.] Eli Lilly & Co, LRL CAT, Adv Photon Source, Argonne Natl Lab, Argonne, IL 60439 USA.
[Gonen, Tamir] Univ Washington, Howard Hughes Med Inst, Seattle, WA 98195 USA.
RP Gonen, T (reprint author), Univ Washington, Dept Biochem, Seattle, WA 98195 USA.
EM tgonen@u.washington.edu
FU NIH [GM-55255, U54 GM074945]; Public Health Service, National Research
Service Award, National Institute of General Medical Sciences [2T32
GM007270]; U. S. Department of Energy, Office of Science, Office of
Basic Energy Sciences [DE-AC02-06CH11357]
FX We thank the Murdock Charitable Trust and the Washington Research
Foundation for generous support of our electron cryomicroscopy
laboratory. We thank Brian Moore and Abigail Lambert for purification of
NrpR protein. We also thank Yifan Cheng (University of California, San
Francisco) and Christophe Verlinde (University of Washington) for
helpful discussions. This work was funded in part by NIH grant GM-55255
to J.A.L. D.M.D. is supported in part by Public Health Service, National
Research Service Award 2T32 GM007270 from the National Institute of
General Medical Sciences. The NYSGXRC is supported by NIH Grant U54
GM074945 (Principal Investigator: S.K. Burley). Use of the Advanced
Photon Source at Argonne National Laboratory was supported by the U. S.
Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract No. DE-AC02-06CH11357. Use of the Lilly
Research Laboratories Collaborative Access Team (LRL-CAT) beamline at
Sector 31 of the Advanced Photon Source was provided by Eli Lilly &
Company, which operates the facility. We gratefully acknowledge the
contributions of all NYSGXRC personnel. T.G. is a Howard Hughes Medical
Institute Early Career Scientist. The authors declare no competing
financial interests.
NR 35
TC 6
Z9 6
U1 0
U2 6
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0969-2126
J9 STRUCTURE
JI Structure
PD NOV 10
PY 2010
VL 18
IS 11
BP 1512
EP 1521
DI 10.1016/j.str.2010.08.014
PG 10
WC Biochemistry & Molecular Biology; Biophysics; Cell Biology
SC Biochemistry & Molecular Biology; Biophysics; Cell Biology
GA 682XA
UT WOS:000284435100015
PM 21070950
ER
PT J
AU Neerathilingam, M
Volk, DE
Sarkar, S
Alam, TM
Alam, MK
Ansari, GAS
Luxon, BA
AF Neerathilingam, Muniasamy
Volk, David E.
Sarkar, Swapna
Alam, Todd M.
Alam, M. Kathleen
Ansari, G. A. Shakeel
Luxon, Bruce A.
TI H-1 NMR-based metabonomic investigation of tributyl phosphate exposure
in rats
SO TOXICOLOGY LETTERS
LA English
DT Article
DE Metabonomics; Tributyl phosphate (TBP); Dibutyl phosphate (DBP); Nuclear
magnetic resonance (NMR); Urine; Rat
ID RENAL DAMAGE; URINE; METABOLISM; DETOXIFICATION; METABOLOMICS; TOXICITY;
RECOVERY; AGENTS; MOUSE; SERUM
AB Tributyl phosphate (TBP) is a toxic organophosphorous compound widely used in many industrial applications, including significant usage in nuclear processing. The industrial application of this chemical is responsible for occupational exposure and environmental pollution. In this study,H-1 NMR-based metabonomics has been applied to investigate the metabolic response to TBP exposure. Male Sprague-Dawley rats were given a TBP-dose of 15 mg/kg body weight, followed by 24 h urine collection, as was previously demonstrated for finding most of the intermediates of TBP. High-resolution H-1 NMR spectroscopy of urine samples in conjunction with statistical pattern recognition and compound identification allowed for the metabolic changes associated with TBP treatment to be identified. Discerning NMR spectral regions corresponding to three TBP metabolites, dibutyl phosphate (DBP), N-acetyl-(S-3-hydroxybutyl)-L-cysteine and N-acetyl-(S-3-oxobutyl)-L-cysteine, were identified in TBP-treated rats. In addition, the H-1 NMR spectra revealed TBP-induced variations of endogenous urinary metabolites including benzoate, urea, and trigonelline along with metabolites involved in the Krebs cycle including citrate, cis-aconitate, trans-aconitate, 2-oxoglutarate, succinate, and fumarate. These findings indicate that TBP induces a disturbance to the Krebs cycle energy metabolism and provides a biomarker signature of TBP exposure. We show that three metabolites of TBP, dibutylphosphate, N-acetyl-(S-3-hydroxybutyl)L-cysteine and N-acetyl-(S-3-oxobutyl)-L-cysteine, which are not present in the control groups, are the most important factors in separating the TBP and control groups (p < 0.0023), while the endogenous compounds 2-oxoglutarate, benzoate, fumarate, trigonelline, and cis-aconetate were also important (p < 0.01). (C) 2010 Elsevier Ireland Ltd. All rights reserved.
C1 [Neerathilingam, Muniasamy; Volk, David E.; Sarkar, Swapna; Ansari, G. A. Shakeel; Luxon, Bruce A.] Univ Texas Med Branch, Sealy Ctr Struct Biol & Mol Biophys, Dept Biochem & Mol Biol, Galveston, TX 77555 USA.
[Neerathilingam, Muniasamy; Luxon, Bruce A.] Univ Texas Med Branch, UTMB Bioinformat Program, Galveston, TX 77555 USA.
[Alam, Todd M.] Sandia Natl Labs, Dept Elect & Nanostruct Mat, Albuquerque, NM 87185 USA.
[Alam, M. Kathleen] Sandia Natl Labs, Energet Characterizat Dept, Albuquerque, NM 87185 USA.
RP Luxon, BA (reprint author), Univ Texas Med Branch, Sealy Ctr Struct Biol & Mol Biophys, Dept Biochem & Mol Biol, Galveston, TX 77555 USA.
EM baluxon@utmb.edu
RI Luxon, Bruce/C-9140-2012;
OI Volk, David/0000-0002-4372-6915
FU United States Department of Energy's NNSA [DE-AC04-94AL85000]; NIEHS
Center [ES06676]
FX We thank the Synthetic Organic Chemistry Core of the UTMB NIEHS Center
for Environmental Toxicology as well as support from the NIEHS Center
(grant ES#06676) for synthesizing TBP metabolites. This work was largely
funded by the Sandia LDRD program with additional support provided by
the UTMB Bioinformatics Program and the Welch Foundation (H1296). Sandia
is a multiprogram laboratory operated by Sandia Corporation, a Lockheed
Martin Company, for the United States Department of Energy's NNSA under
contract DE-AC04-94AL85000.
NR 28
TC 12
Z9 14
U1 1
U2 23
PU ELSEVIER IRELAND LTD
PI CLARE
PA ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000,
IRELAND
SN 0378-4274
J9 TOXICOL LETT
JI Toxicol. Lett.
PD NOV 10
PY 2010
VL 199
IS 1
BP 10
EP 16
DI 10.1016/j.toxlet.2010.07.013
PG 7
WC Toxicology
SC Toxicology
GA 676KR
UT WOS:000283910500003
PM 20688139
ER
PT J
AU Ramezanipour, F
Greedan, JE
Grosvenor, AP
Britten, JF
Cranswick, LMD
Garlea, VO
AF Ramezanipour, Farshid
Greedan, John E.
Grosvenor, Andrew P.
Britten, James F.
Cranswick, Lachlan M. D.
Garlea, V. Ovidiu
TI Intralayer Cation Ordering in a Brownmillerite Superstructure:
Synthesis, Crystal, and Magnetic Structures of Ca2FeCoO5
SO CHEMISTRY OF MATERIALS
LA English
DT Article
ID NEUTRON-DIFFRACTION; DOUBLE PEROVSKITES; TETRAHEDRAL CHAINS; MANGANESE
OXIDE; TEMPERATURE; MAGNETORESISTANCE; SR2FE2O5; CA2FE2O5; TRANSITIONS;
CA2CO2O5
AB The synthesis, crystal, and magnetic structures and the bulk magnetic properties of Ca2FeCoO5, a brownmillerite type oxide, are presented. The crystal structure, solved and refined from single crystal X-ray and powder neutron diffraction data, is described in Pbcm with cell parameters, a = 5.3652(3) angstrom, b = 11.0995(5) angstrom, c = 14.7982(7) angstrom. Thus, one axis, b in this setting, is doubled in comparison with the standard brownmillerite structure description giving rise to two sets of octahedral and tetrahedral sites. Aided by the strong scattering contrast between Fe and Co for neutrons, a nearly perfect intralayer cation site ordering, not observed for any brownmillerite before, is detected in the tetrahedral layers. There is a lesser degree of cation site ordering in the octahedral sites. Overall, the Fe/Co site ordering is of the NaCl type both within and between the tetrahedral and octahedral layers. There are also both intra- and interlayer ordering of tetrahedral chain orientations. The left-and right-handed orientations alternate within each tetrahedral layer as well as between the closest tetrahedral layers. The occurrence of the rare Pbcm space group in Ca2FeCoO5 is not consistent with a recently proposed structure-field map for brownmillerite oxides. The magnetic structure is G-type antiferromagnetic, with preferred orientation of magnetic moments parallel to the longest axis between 3.8 K to 100 K which switches to the shortest axis between 225 K and 550 K. The neutron diffraction data indicate different site specific ordering temperatures at about 450(5) K and 555(5) K. The refined ordered moments at 3.8 K are somewhat smaller than expected for Fe3+ and Co3+ (high spin) but are similar to those found in Sr2FeCoO5. There is evidence for spin canting from isothermal magnetization data that shows well pronounced hystereses and remnant magnetizations at 5 K and 200 K.
C1 [Ramezanipour, Farshid; Greedan, John E.; Britten, James F.] McMaster Univ, Dept Chem, Hamilton, ON L8S 4M, Canada.
[Ramezanipour, Farshid; Greedan, John E.; Britten, James F.] McMaster Univ, Brockhouse Inst Mat Res, Hamilton, ON L8S 4M, Canada.
[Grosvenor, Andrew P.] Univ Saskatchewan, Dept Chem, Saskatoon, SK S7N 5C9, Canada.
[Cranswick, Lachlan M. D.] AECL Res, Chalk River Labs, Natl Res Council, Canadian Neutron Beam Ctr, Chalk River, ON K0J 1J0, Canada.
[Garlea, V. Ovidiu] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
RP Greedan, JE (reprint author), McMaster Univ, Dept Chem, 1280 Main St W, Hamilton, ON L8S 4M1, Canada.
EM greedan@mcmaster.ca
RI Garlea, Vasile/A-4994-2016
OI Garlea, Vasile/0000-0002-5322-7271
FU Natural Sciences and Engineering Research Council (NSERC) of Canada;
NSERC; Scientific User Facilities Division, Office of Basic Energy
Sciences, U.S. Department of Energy (U.S. DOE); U.S. DOE
[DEAC05-00OR22725]
FX J.E.G. acknowledges the support of the Natural Sciences and Engineering
Research Council (NSERC) of Canada through a Discovery Grant. The
Canadian Neutron Beam Centre is also supported by NSERC by a Major
Facilities Access grant.; The work at the High Flux Isotope Reactor, Oak
Ridge National Laboratory (ORNL), was sponsored by the Scientific User
Facilities Division, Office of Basic Energy Sciences, U.S. Department of
Energy (U.S. DOE). ORNL is operated by UT Battelle, LLC for the U.S. DOE
under Contract No. DEAC05-00OR22725.
NR 48
TC 19
Z9 19
U1 5
U2 56
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0897-4756
J9 CHEM MATER
JI Chem. Mat.
PD NOV 9
PY 2010
VL 22
IS 21
BP 6008
EP 6020
DI 10.1021/cm1023025
PG 13
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 672YL
UT WOS:000283623700028
ER
PT J
AU Agapov, A
Sokolov, AP
AF Agapov, A.
Sokolov, A. P.
TI Size of the Dynamic Bead in Polymers
SO MACROMOLECULES
LA English
DT Article
ID NEUTRON SPIN-ECHO; DILUTE-SOLUTION; AB-INITIO; VISCOSITY DEPENDENCE;
INTERNAL VISCOSITY; CHAIN DYNAMICS; LOCAL DYNAMICS; POLYETHYLENE;
POLYISOBUTYLENE; POLYSTYRENE
AB Presented analysis of neutron, mechanical, and MD simulation data available in the literature demonstrates that the dynamic bead size (the smallest subchain that still exhibits the Rouse-like dynamics) in most of the polymers is significantly larger than the traditionally defined Kuhn segment. Moreover, our analysis emphasizes that even the static bead size (e.g., chain statistics) disagrees with the Kuhn segment length. We demonstrate that the deficiency of the Kuhn segment definition is based on the assumption of a chain being completely extended inside a single bead. The analysis suggests that representation of a real polymer chain by the bead-and-spring model with a single parameter C-infinity cannot be correct. One needs more parameters to reflect correctly details of the chain structure in the bead-and-spring model.
C1 [Agapov, A.; Sokolov, A. P.] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
[Agapov, A.; Sokolov, A. P.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Agapov, A.; Sokolov, A. P.] ORNL, Div Chem Sci, Oak Ridge, TN 37830 USA.
[Agapov, A.] Univ Akron, Dept Polymer Sci, Akron, OH 44325 USA.
RP Sokolov, AP (reprint author), Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
EM sokolov@utk.edu
FU NSF [DMR-0804571]; Division of Materials Sciences and Engineering, DOE's
BES
FX We thank the NSF Polymer program for the financial support
(DMR-0804571). A.P.S. also acknowledges partial financial support by the
Division of Materials Sciences and Engineering, DOE's BES.
NR 44
TC 10
Z9 10
U1 2
U2 22
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0024-9297
EI 1520-5835
J9 MACROMOLECULES
JI Macromolecules
PD NOV 9
PY 2010
VL 43
IS 21
BP 9126
EP 9130
DI 10.1021/ma101222y
PG 5
WC Polymer Science
SC Polymer Science
GA 673VY
UT WOS:000283693500057
ER
PT J
AU Golec-Biernat, K
Lewandowska, E
Stasto, AM
AF Golec-Biernat, Krzysztof
Lewandowska, Emilia
Stasto, Anna M.
TI Drell-Yan process at forward rapidity at the LHC
SO PHYSICAL REVIEW D
LA English
DT Article
ID CROSS-SECTIONS; FACTORIZATION; SCATTERING; MODEL; SOFT; QCD
AB We analyze the Drell-Yan lepton pair production at forward rapidity at the Large Hadron Collider. Using the dipole framework for the computation of the cross section we find a significant suppression in comparison to the collinear factorization formula due to saturation effects in the dipole cross section. We develop a twist expansion in powers of Q(s)(2)/M(2) where Q(s) is the saturation scale and M the invariant mass of the produced lepton pair. For the nominal LHC energy the leading twist description is sufficient down to masses of 6 GeV. Below that value the higher twist terms give a significant contribution.
C1 [Golec-Biernat, Krzysztof] Univ Rzeszow, Inst Phys, Rzeszow, Poland.
[Golec-Biernat, Krzysztof; Lewandowska, Emilia; Stasto, Anna M.] Polish Acad Sci, Inst Nucl Phys, Krakow, Poland.
[Stasto, Anna M.] Penn State Univ, Dept Phys, University Pk, PA 16802 USA.
[Stasto, Anna M.] Brookhaven Natl Lab, RIKEN Ctr, Upton, NY 11973 USA.
RP Golec-Biernat, K (reprint author), Univ Rzeszow, Inst Phys, Rzeszow, Poland.
EM golec@ifj.edu.pl; emilia.lewandowska@ifj.edu.pl; astasto@phys.psu.edu
FU MNiSW [N202 249235]; HEPTOOLS [MRTN-CT-2006-035505]; Sloan Foundation;
DOE OJI [DE-SC0002145]
FX This work is partially supported by the grants of MNiSW No. N202 249235
and the grant HEPTOOLS, MRTN-CT-2006-035505. A. M. S. is supported by
the Sloan Foundation and the DOE OJI Grant No. DE-SC0002145.
NR 27
TC 13
Z9 13
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 9
PY 2010
VL 82
IS 9
AR 094010
DI 10.1103/PhysRevD.82.094010
PG 11
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 677MO
UT WOS:000283996700004
ER
PT J
AU Sun, YG
AF Sun, Yugang
TI Metal Nanoplates on Semiconductor Substrates
SO ADVANCED FUNCTIONAL MATERIALS
LA English
DT Article
ID SHAPE-CONTROLLED SYNTHESIS; LARGE-SCALE SYNTHESIS; ENHANCED
RAMAN-SCATTERING; INDUCED CHARGE SEPARATION; REPLACEMENT REACTION;
PLATINUM NANOPARTICLES; ELECTROLESS DEPOSITION; PLASMONIC PROPERTIES;
SILVER NANOCRYSTALS; GOLD NANOPARTICLES
AB Growth of anisotropic metal nanostructures with well-defined shapes on large-area semiconductor substrates represents a challenge to synthesize hybrid materials with complex functionalities. This Feature Article highlights the approach recently developed in our group for growing nanoplates made of noble metals (e.g., Ag, Pd, Au/Ag alloy) on semiconductor wafers (e. g., GaAs and Si), which are widely used in the semiconductor industry. In the typical syntheses, only the semiconductor wafers and pure aqueous solutions of metal precursors are involved in the reaction. The absence of surfactant molecules, organic solvents, catalysts, etc. in the syntheses makes this strategy suitable for the formation of metal/semiconductor hybrid materials with clean metal/semiconductor interfaces. The mechanism for the selective growth of metal nanoplates on semiconductor substrates is extensively discussed. The as-grown metal nanoplates protrude out of the substrates to expose most of their surface areas to the surrounding environment, leading to be favorable for some applications, such as catalysis and surface-enhanced Raman scattering.
C1 Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Sun, YG (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM ygsun@anl.gov
RI Sun, Yugang /A-3683-2010
OI Sun, Yugang /0000-0001-6351-6977
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-AC02-06CH11357]; U.S. Department of Energy
[DEFG02-91-ER45439]
FX Use of the Center for Nanoscale Materials, the Electron Microscopy
Center for Materials Research, and the Advanced Photon Source at Argonne
was supported by the U.S. Department of Energy, Office of Science,
Office of Basic Energy Sciences, under contract no. DE-AC02-06CH11357.
Characterizations were also carried out by partially using the Center
for Microanalysis of Materials Facilities in Frederick Seitz Materials
Research Laboratory, University of Illinois, which is partially
supported by the U.S. Department of Energy under Grant No.
DEFG02-91-ER45439. Y.S. thanks Dr. D. Gosztola for reading through the
manuscript. This article is part of a Special Issue on Nanomaterials
Research by Chinese Scientists.
NR 83
TC 29
Z9 30
U1 8
U2 74
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1616-301X
J9 ADV FUNCT MATER
JI Adv. Funct. Mater.
PD NOV 9
PY 2010
VL 20
IS 21
BP 3646
EP 3657
DI 10.1002/adfm.201001336
PG 12
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 677NU
UT WOS:000283999900004
ER
PT J
AU Kao, YH
Tang, M
Meethong, N
Bai, JM
Carter, WC
Chiang, YM
AF Kao, Yu-Hua
Tang, Ming
Meethong, Nonglak
Bai, Jianming
Carter, W. Craig
Chiang, Yet-Ming
TI Overpotential-Dependent Phase Transformation Pathways in Lithium Iron
Phosphate Battery Electrodes
SO CHEMISTRY OF MATERIALS
LA English
DT Article
ID NANOSCALE OLIVINES; ION BATTERIES; CATHODES; STORAGE; MODEL; SIZE; MN;
FE
AB An objective in battery development for higher storage energy density is the design of compounds that can accommodate maximum changes in ion concentration over useful electrochemical windows. Not surprisingly, many storage compounds undergo phase transitions in situ, including production of metastable phases. Unique to this environment is the frequent application of electrical over- and underpotentials, which are the electrical analogs to undercooling and superheating. Surprisingly, overpotential effects on phase stability and transformation mechanisms have not been studied in detail. Here we use synchrotron X-ray diffraction performed in situ during potentiostatic and galvanostatic cycling, combined with phase-field modeling, to reveal a remarkable dependence of phase transition pathway on overp(o)tential in the model olivine Lit-x FePO4. For a sample of particle size similar to 113 nm, at both low (e.g., < 20 mV) and high ( > 75 mV) overpotentials a crystal-to-crystal olivine transformation dominates, whereas at intermediate overpotentials a crystalline-to-amorphous phase transition is preferred. As particle sizes decrease to the nanoscale, amorphization is further emphasized. Implications for battery use and design are considered.
C1 [Kao, Yu-Hua; Carter, W. Craig; Chiang, Yet-Ming] MIT, Cambridge, MA 02139 USA.
[Tang, Ming] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Meethong, Nonglak] Khon Kaen Univ, Khon Kaen, Thailand.
[Bai, Jianming] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Chiang, YM (reprint author), MIT, 77 Massachusetts Ave,Bldg 13,Room 13-4086, Cambridge, MA 02139 USA.
EM ychiang@mit.edu
RI Carter, W/K-2406-2012; Bai, Jianming/O-5005-2015
FU DOE [DE-SC0002626]; U.S. Department of Energy, Office of Energy
Efficiency and Renewable Energy through the Oak Ridge National
Laboratory's High Temperature Materials Laboratory; Scientific User
Facilities Division, Office of Basic Energy Sciences, U.S. Department of
Energy; Taiwan Merit Scholarship [TMS-94-2A-019]; Lawrence Livermore
National Laboratory; Thailand Center of Excellence in Physics
FX This work was supported by DOE project number DE-SC0002626. Research at
the National Synchrotron Light Source X14A beamline was partially
sponsored by the U.S. Department of Energy, Office of Energy Efficiency
and Renewable Energy, Vehicle Technologies Program, through the Oak
Ridge National Laboratory's High Temperature Materials Laboratory User
Program and by the Scientific User Facilities Division, Office of Basic
Energy Sciences, U.S. Department of Energy. Y.-H.K. acknowledges support
by Taiwan Merit Scholarship TMS-94-2A-019, M.T. acknowledges financial
support from the Lawrence Postdoctoral Fellowship provided by the
Lawrence Livermore National Laboratory, and N.M. acknowledges support by
the Thailand Center of Excellence in Physics.
NR 24
TC 62
Z9 62
U1 2
U2 76
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0897-4756
J9 CHEM MATER
JI Chem. Mat.
PD NOV 9
PY 2010
VL 22
IS 21
BP 5845
EP 5855
DI 10.1021/cm101698b
PG 11
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 672YL
UT WOS:000283623700008
ER
PT J
AU Wang, SA
Alekseev, EV
Stritzinger, JT
Liu, GK
Depmeier, W
Albrecht-Schmitt, TE
AF Wang, Shuao
Alekseev, Evgeny V.
Stritzinger, Jared T.
Liu, Guokui
Depmeier, Wulf
Albrecht-Schmitt, Thomas E.
TI Structure-Property Relationships in Lithium, Silver, and Cesium Uranyl
Borates
SO CHEMISTRY OF MATERIALS
LA English
DT Article
ID FUNDAMENTAL BUILDING-BLOCKS; NONLINEAR-OPTICAL MATERIALS;
TRANSITION-METAL-COMPLEXES; OPEN-FRAMEWORK; VANADIUM BOROPHOSPHATE;
CRYSTAL-CHEMISTRY; NUCLEAR-WASTE; BORIC-ACID; BOROGERMANATE; CHANNELS
AB Four new uranyl borates, Li[UO2B5O9]center dot H2O (LiUBO-1), Ag[(UO2)B5O8(OH)(2)] (AgUBO-1), alpha-Cs[(UO2)(2))B11O16(OH)(6)] (CsUBO-1), and beta-Cs[(UO2)(2)B11O16(OH)(6)] (CsUBO-2) were synthesized via the reaction of uranyl nitrate with a large excess of molten boric acid in the presence of lithium, silver, or cesium nitrate. These compounds share a common structural motif consisting of a linear uranyl, UO22+, cation surrounded by BO3 triangles and BO4 tetrahedra to create an UO8 hexagonal bipyramidal environment around uranium. The borate anions bridge between uranyl units to create sheets. Additional BO3 triangles extend from the polyborate layers, and are directed approximately perpendicular to the sheets. In Li[(UO2)B5O9]center dot H2O, the additional BO3 triangles connect these sheets together to form a three-dimensional framework structure. Li[(UO2)B5O9]center dot H2O and beta-Cs[(UO2)(2)B11O16(OH)(6)] adopt noncentrosymmetric structures, while Ag[(UO2)B5O8(OH)(2)] and alpha-Cs[(UO2)(2))B11O16(OH)(6)]are centrosymmetric. Li[(UO2)B5O9]center dot H2O, which can be obtained as pure phase, displays second-harmonic generation of 532 nm light from 1064 mu light. Topological relationships of all actinyl borates are developed.
C1 [Wang, Shuao; Alekseev, Evgeny V.; Stritzinger, Jared T.; Albrecht-Schmitt, Thomas E.] Univ Notre Dame, Dept Civil Engn & Geol Sci, Notre Dame, IN 46556 USA.
[Wang, Shuao; Alekseev, Evgeny V.; Stritzinger, Jared T.; Albrecht-Schmitt, Thomas E.] Univ Notre Dame, Dept Chem & Biochem, Notre Dame, IN 46556 USA.
[Alekseev, Evgeny V.; Depmeier, Wulf] Univ Kiel, Inst Geowissensch, D-24118 Kiel, Germany.
[Liu, Guokui] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
RP Alekseev, EV (reprint author), Univ Notre Dame, Dept Civil Engn & Geol Sci, 156 Fitzpatrick Hall, Notre Dame, IN 46556 USA.
EM talbrec1@nd.edu
RI Wang, Shuao/H-7373-2012;
OI Alekseev, Evgeny/0000-0002-4919-5211
FU Deutsche Forschungsgemeinschaft [DE 412/30-2]; U.S. Department of
Energy, Office of Science, Office of Basic Energy Sciences
[DE-SC0001089]; National Science Foundation; Chemical Sciences,
Geosciences, and Biosciences Division, Office of Basic Energy Sciences,
Office of Science, U.S. Department of Energy [DE-FG02-01ER16026,
DE-SC0002215]
FX We are grateful for support provided by the Chemical Sciences,
Geosciences, and Biosciences Division, Office of Basic Energy Sciences,
Office of Science, Heavy Elements Program, U.S. Department of Energy,
under Grant DE-FG02-01ER16026 and DE-SC0002215, and by Deutsche
Forschungsgemeinschaft for support within the DE 412/30-2 research
project. This material is based upon work supported as part of the
Materials Science of Actinides, an Energy Frontier Research Center
funded by the U.S. Department of Energy, Office of Science, Office of
Basic Energy Sciences under Award Number DE-SC0001089. The National
Science Foundation also supported a portion of this work through the REV
program in solid-state and materials chemistry (DMR).
NR 67
TC 30
Z9 31
U1 1
U2 25
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0897-4756
EI 1520-5002
J9 CHEM MATER
JI Chem. Mat.
PD NOV 9
PY 2010
VL 22
IS 21
BP 5983
EP 5991
DI 10.1021/cm1022135
PG 9
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 672YL
UT WOS:000283623700025
ER
PT J
AU Dalle-Ferrier, C
Niss, K
Sokolov, AP
Frick, B
Serrano, J
Alba-Simionesco, C
AF Dalle-Ferrier, Cecile
Niss, Kristine
Sokolov, Alexei P.
Frick, Bernhard
Serrano, Jorge
Alba-Simionesco, Christiane
TI The Role of Chain Length in Nonergodicity Factor and Fragility of
Polymers
SO MACROMOLECULES
LA English
DT Article
ID MOLECULAR-WEIGHT DEPENDENCE; GLASS-FORMING LIQUIDS;
TEMPERATURE-DEPENDENCE; SEGMENTAL RELAXATION; PRESSURE-DEPENDENCE;
TRANSITION; DYNAMICS; POLYISOBUTYLENE; POLYSTYRENE; EQUATION
AB The mechanism that leads to different fragility values upon approaching the glass transition remains a topic of active discussion. Many researchers are trying to find an answer in the properties of the frozen glassy state. Following this approach, we focus here on a previously proposed relationship between the fragility of glass-formers and their nonergodicity factor, determined by inelastic X-ray scattering (IXS) in the glass. We extend this molecular liquid study to two model polymers-polystyrene (PS) and polyisobutylene (PIB)-for which we change the molecular weight. Polymers offer the opportunity to change the fragility without altering the chemical structure, just by changing the chain length. Thus, we specifically chose PS and PIB because they exhibit opposite dependences of fragility with molecular weight. Our analysis for these two polymers reveals no unique correlation between the fragility and the nonergodicity parameter. Even after a recently suggested correction for a possible contribution of the beta relaxation, the correlation is not restored. We discuss possible causes for the failure of the "fragility-nonergodicity factor" correlation, emphasizing the features that are specific to polymers. We speculate that polymers might have specific contributions to fragility related to the chain connectivity that are absent in nonpolymeric systems.
C1 [Dalle-Ferrier, Cecile; Niss, Kristine] Univ Paris 11, Chim Phys Lab, F-91405 Orsay, France.
[Sokolov, Alexei P.] ORNL, Div Chem Sci, Oak Ridge, TN USA.
[Sokolov, Alexei P.] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
[Frick, Bernhard] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France.
[Serrano, Jorge] Univ Politecn Cataluna, ICREA Dept Fis Aplicada, EPSC, Castelldefels 08860, Spain.
RP Alba-Simionesco, C (reprint author), CEA CNRS, Lab Leon Brillouin, Saclay, France.
EM christiane.alba-simionesco@cea.fr
RI Frick, Bernhard/C-2756-2011; christiane, alba-simionesco/D-2678-2012;
OI Niss, Kristine/0000-0002-9391-0366
FU NSF [DMR-0804571]; CNRS; CEA (France)
FX A. Sokolov acknowledges financial support by the NSF Polymer program
(Grant DMR-0804571). This work was supported by the CNRS and CEA
(France). The authors thank the ESRF for the beam time.
NR 56
TC 12
Z9 12
U1 1
U2 18
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0024-9297
J9 MACROMOLECULES
JI Macromolecules
PD NOV 9
PY 2010
VL 43
IS 21
BP 8977
EP 8984
DI 10.1021/ma101622f
PG 8
WC Polymer Science
SC Polymer Science
GA 673VY
UT WOS:000283693500038
ER
PT J
AU Abes, M
Atkinson, D
Tanner, BK
Charlton, TR
Langridge, S
Hase, TPA
Ali, M
Marrows, CH
Hickey, BJ
Neudert, A
Hicken, RJ
Arena, D
Wilkins, SB
Mirone, A
Lebegue, S
AF Abes, M.
Atkinson, D.
Tanner, B. K.
Charlton, T. R.
Langridge, Sean
Hase, T. P. A.
Ali, M.
Marrows, C. H.
Hickey, B. J.
Neudert, A.
Hicken, R. J.
Arena, D.
Wilkins, S. B.
Mirone, A.
Lebegue, S.
TI Spin polarization and exchange coupling of Cu and Mn atoms in
paramagnetic CuMn diluted alloys induced by a Co layer
SO PHYSICAL REVIEW B
LA English
DT Article
ID RESONANT MAGNETIC SCATTERING; AUGMENTED-WAVE METHOD; X-RAY-SCATTERING;
ELECTRONIC-STRUCTURE; CIRCULAR-DICHROISM; CO/CU MULTILAYERS; SURFACE
ALLOY; FILMS; MAGNETORESISTANCE; OSCILLATIONS
AB Using the surface, interface, and element specificity of x-ray resonant magnetic scattering in combination with x-ray magnetic circular dichroism, we have spatially resolved the magnetic spin polarization, and the associated interface proximity effect, in a Mn-based high-susceptibility material close to a ferromagnetic Co layer. We have measured the magnetic polarization of Mn and Cu 3d electrons in paramagnetic CuMn alloy layers in [Co/Cu(x)/CuMn/Cu(x)](20) multilayer samples with varying copper layer thicknesses from x=0 to 25 angstrom. The size of the Mn and Cu L-2,L-3 edge dichroism shows a decrease in the Mn-induced polarization for increasing copper thickness indicating the dominant interfacial nature of the Cu and Mn spin polarization. The Mn polarization is much higher than that of Cu. Evidently, the Mn moment is a useful probe of the local spin density. Mn atoms appear to be coupled antiferromagnetically with the Co layer below x=10 angstrom and ferromagnetically coupled above. In contrast, the interfacial Cu atoms remain ferromagnetically aligned to the Co layer for all thicknesses studied.
C1 [Abes, M.; Atkinson, D.; Tanner, B. K.] Univ Durham, Dept Phys, Durham DH1 3LE, England.
[Charlton, T. R.; Langridge, Sean] Rutherford Appleton Lab, ISIS, Didcot OX11 0QX, Oxon, England.
[Hase, T. P. A.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Ali, M.; Marrows, C. H.; Hickey, B. J.] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England.
[Neudert, A.; Hicken, R. J.] Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England.
[Arena, D.] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
[Wilkins, S. B.] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
[Mirone, A.] European Synchrotron Radiat Facil, F-38043 Grenoble, France.
[Lebegue, S.] Nancy Univ, Lab Cristallog Resonance Magnet & Modelisat, Inst Jean Barriol, CNRS,CRM2,UMR 7036, F-54506 Vandoeuvre Les Nancy, France.
RP Abes, M (reprint author), Univ Kiel, Dept Phys, D-24098 Kiel, Germany.
EM abes@physik.uni-kiel.de
RI Lebegue, sebastien/A-7851-2010; Marrows, Christopher/D-7980-2011;
Neudert, Andreas/H-1798-2012; Hickey, B J/B-3333-2016;
OI Hickey, B J/0000-0001-8289-5618; Marrows,
Christopher/0000-0003-4812-6393; Langridge, Sean/0000-0003-1104-0772
FU U.K. EPSRC through the Spin@RT consortium; ANR PNANO
[ANR-06-NANO-053-02]; ANR [ANR-07-BLAN-0272]
FX This work was supported by the U.K. EPSRC through the Spin@RT
consortium. We are grateful to Brookhaven National Laboratory and the
Science and Technology Facilities Council for the provision of beamtime
at the NSLS and Daresbury SRS, respectively. S. Lebegue acknowledges
financial support from ANR PNANO under Grant No. ANR-06-NANO-053-02 and
ANR under Grant No. ANR-07-BLAN-0272.
NR 56
TC 6
Z9 6
U1 2
U2 12
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 9
PY 2010
VL 82
IS 18
AR 184412
DI 10.1103/PhysRevB.82.184412
PG 11
WC Physics, Condensed Matter
SC Physics
GA 677MB
UT WOS:000283995400005
ER
PT J
AU Hsiung, LL
Fluss, MJ
Tumey, SJ
Choi, BW
Serruys, Y
Willaime, F
Kimura, A
AF Hsiung, Luke L.
Fluss, Michael J.
Tumey, Scott J.
Choi, B. William
Serruys, Yves
Willaime, Francois
Kimura, Akihiko
TI Formation mechanism and the role of nanoparticles in Fe-Cr ODS steels
developed for radiation tolerance
SO PHYSICAL REVIEW B
LA English
DT Article
ID STRENGTHENED FERRITIC STEELS; FBR CORE APPLICATION;
STRUCTURAL-MATERIALS; OXIDE PARTICLES; ION IRRADIATION; FUSION-REACTOR;
DISPERSION; HELIUM; ALLOYS; POWDER
AB Structures of nanoparticles in Fe-16Cr-4.5Al-0.3Ti-2W-0.37Y(2)O(3) (K3) and Fe-20Cr-4.5Al-0.34Ti-0.5Y(2)O(3) (MA956) oxide dispersion strengthened (ODS) ferritic steels produced by mechanical alloying (MA) and followed by hot extrusion have been studied using high-resolution transmission electron microscopy (HRTEM) techniques to understand the formation mechanism of nanoparticles in MA/ODS steels. The observations of Y-Al-O complex-oxide nanoparticles in both ODS steels imply that decomposition of Y(2)O(3) in association with internal oxidation of Al occurred during mechanical alloying. While the majority of oxide nanoparticles formed in both steels is Y(4)Al(2)O(9), a few oxide particles of YAlO(3) are also observed occasionally. These results reveal that Ti (0.3 wt %) plays an insignificant role in forming oxide nanoparticles in the presence of Al (4.5 wt %). HRTEM observations of crystalline nanoparticles larger than similar to 2 nm and amorphous or disordered cluster domains smaller than similar to 2 nm provide an insight into the formation mechanism of oxide nanoparticle in MA/ODS steels, which we believe from our observations involves solid-state amorphization and recrystallization. The role of nanoparticles in suppressing radiation-induced swelling is revealed through TEM examinations of cavity distributions in ion-irradiated Fe-14Cr and K3-ODS ferritic steels. HRTEM observations of helium-filled cavities (helium bubbles) preferably trapped at nanoscale oxide particles and clusters in ionirradiated K3-ODS are presented.
C1 [Hsiung, Luke L.; Fluss, Michael J.; Tumey, Scott J.; Choi, B. William] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94551 USA.
[Serruys, Yves; Willaime, Francois] CEA, Serv Rech Met Phys, F-91191 Gif Sur Yvette, France.
[Kimura, Akihiko] Kyoto Univ, Inst Adv Energy, Kyoto 6110011, Japan.
RP Hsiung, LL (reprint author), Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94551 USA.
EM hsiung1@llnl.gov
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; LLNL [09-SI-003]
FX This work was performed under the auspices of the U.S. Department of
Energy by Lawrence Livermore National Laboratory under Contract No.
DE-AC52-07NA27344. Work at LLNL was funded by the Laboratory Directed
Research and Development Program at LLNL under project tracking code
09-SI-003. The author gratefully acknowledges B. El-dasher for supplying
Fe-20Cr (MA 956) ODS steel, M. A. Wall for particle-size distribution
analyses, and N. E. Teslich and R. J. Gross for TEM sample preparations,
R. L. Krueger for the design of sample holder for irradiation.
NR 35
TC 74
Z9 75
U1 11
U2 86
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 9
PY 2010
VL 82
IS 18
AR 184103
DI 10.1103/PhysRevB.82.184103
PG 13
WC Physics, Condensed Matter
SC Physics
GA 677MB
UT WOS:000283995400001
ER
PT J
AU Kang, W
Hybertsen, MS
AF Kang, Wei
Hybertsen, Mark S.
TI Enhanced static approximation to the electron self-energy operator for
efficient calculation of quasiparticle energies
SO PHYSICAL REVIEW B
LA English
DT Article
ID DENSITY-FUNCTIONAL THEORY; BAND-GAPS; ABSORPTION-SPECTRA;
GREENS-FUNCTION; CONSISTENT GW; SEMICONDUCTORS; INSULATORS; GAS;
CLUSTERS; PSEUDOPOTENTIALS
AB An enhanced static approximation for the electron self-energy operator is proposed for efficient calculation of quasiparticle energies. Analysis of the static Coulomb-hole screened-exchange (COHSEX) approximation originally proposed by Hedin shows that most of the error derives from the short-wavelength contributions of the assumed adiabatic accumulation of the Coulomb hole. A wave-vector-dependent correction factor can be incorporated as the basis for a new static approximation. This factor can be approximated by a single scaling function, determined from the homogeneous electron-gas model. The local field effect in real materials is captured by a simple ansatz based on symmetry consideration. As inherited from the COHSEX approximation, the new approximation presents a Hermitian self-energy operator and the summation over empty states is eliminated from the evaluation of the self-energy operator. Tests were conducted comparing the new approximation to GW calculations for diverse materials ranging from crystals, molecules, atoms and a carbon nanotube. The accuracy for the minimum gap is about 10% or better. Like in the COHSEX approximation, the occupied bandwidth is overestimated.
C1 [Kang, Wei; Hybertsen, Mark S.] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
RP Kang, W (reprint author), Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
RI Kang, Wei/A-9784-2012;
OI Kang, Wei/0000-0001-9989-0485; Hybertsen, Mark S/0000-0003-3596-9754
FU U.S. Department of Energy [DEAC02-98CH1-886, DE-AC02-98CH10886]; State
of New York
FX Work performed under the auspices of the U.S. Department of Energy under
Contract No. DEAC02-98CH1-886. This research utilized resources at the
New York Center for Computational Sciences at Stony Brook
University/Brookhaven National Laboratory which is supported by the U.S.
Department of Energy under Contract No. DE-AC02-98CH10886 and by the
State of New York.
NR 60
TC 21
Z9 21
U1 0
U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 9
PY 2010
VL 82
IS 19
AR 195108
DI 10.1103/PhysRevB.82.195108
PG 8
WC Physics, Condensed Matter
SC Physics
GA 677MD
UT WOS:000283995600005
ER
PT J
AU Lin, J
AF Lin, Jie
TI Lifshitz transition in two-dimensional spin-density wave models
SO PHYSICAL REVIEW B
LA English
DT Article
ID ELECTRONIC TOPOLOGICAL TRANSITIONS; SUPERCONDUCTIVITY; INSULATOR; METALS
AB We argue that both pocket-disappearing and neck-disrupting types of Lifshitz transitions can be realized in two-dimensional spin-density wave models for underdoped cuprates, and study both types of transitions with impurity scattering treated in the self-consistent Born approximation. We first solve for the electron self-energy from the self-consistent equation, and then study the low-temperature electrical conductivity and thermopower. Close to the Lifshitz transition, the thermopower is strongly enhanced. For the pocket-disappearing type, it has a sharp peak while for the neck-disrupting type, it changes sign at the transition, with its absolute value peaked on both sides of the transition. We discuss possible applications to underdoped cuprates.
C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Lin, J (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
FU U.S. DOE, Office of Science [DE-AC02-06CH11357, DE-AC0298CH1088]
FX The author thanks Alex Levchenko for discussions, and A. J. Millis and
M. R. Norman for advice and reading of the manuscript. This work was
supported by the U.S. DOE, Office of Science, under Contract No.
DE-AC02-06CH11357 and by the Center for Emergent Superconductivity, an
Energy Frontier Research Center funded by the U.S. DOE, Office of
Science, under Award No. DE-AC0298CH1088.
NR 38
TC 1
Z9 1
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 9
PY 2010
VL 82
IS 19
AR 195110
DI 10.1103/PhysRevB.82.195110
PG 8
WC Physics, Condensed Matter
SC Physics
GA 677MD
UT WOS:000283995600007
ER
PT J
AU Noakes, TCQ
Bailey, P
McConville, CF
Draxler, M
Walker, M
Brown, MG
Hentz, A
Woodruff, DP
Lograsso, TA
Ross, AR
Smerdon, JA
Leung, L
McGrath, R
AF Noakes, T. C. Q.
Bailey, P.
McConville, C. F.
Draxler, M.
Walker, M.
Brown, M. G.
Hentz, A.
Woodruff, D. P.
Lograsso, T. A.
Ross, A. R.
Smerdon, J. A.
Leung, L.
McGrath, R.
TI Two- and three-dimensional growth of Bi on i-Al-Pd-Mn studied using
medium-energy ion scattering
SO PHYSICAL REVIEW B
LA English
DT Article
ID 5-FOLD SURFACE; QUASI-CRYSTAL; FILM GROWTH; AU
AB Recent work on the growth of thin metal films on quasicrystalline substrates has indicated the formation of so-called "magic height" islands with multiples of 4 atomic layers (AL) arising as a result of quantum size effects, which lead to enhanced stability. Here the results of a study are reported of Bi deposition on i-Al-Pd-Mn using medium-energy ion scattering to characterize the island thickness and the structural arrangement of Bi atoms within the islands. In addition, data were taken from annealed surfaces after Bi cluster desorption to leave a single aperiodic monolayer of Bi at the surface. Scattered-ion energy spectra from the Bi islands are consistent with a single Bi monolayer covered with mainly 4 AL islands for both 1.8 and 3.2 monolayer equivalent coverages but with some occupation of 2 and 8 Al islands as well. The angular dependence of the scattered-ion intensity ("blocking curve") from Bi has been compared with simulations for various models of both rhombohedral Bi and a distorted "black-phosphorus"-like structure. The data demonstrate bilayer formation within the Bi islands. In the case of the aperiodic Bi monolayer, the blocking curves from substrate scattering are found to be inconsistent with two high-symmetry sites on the quasicrystalline surface that theory indicates are energetically favorable but do not exclude the formation of pentagonal arrangements of Bi atoms as seen in other recent experimental work.
C1 [Noakes, T. C. Q.; Bailey, P.] STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England.
[McConville, C. F.; Draxler, M.; Walker, M.; Brown, M. G.; Hentz, A.; Woodruff, D. P.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Lograsso, T. A.; Ross, A. R.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
[Smerdon, J. A.; Leung, L.; McGrath, R.] Univ Liverpool, Surface Sci Res Ctr, Liverpool L69 3BX, Merseyside, England.
RP Noakes, TCQ (reprint author), STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England.
EM tim.noakes@stfc.ac.uk
RI McGrath, Ronan/A-1568-2009; Walker, Marc/A-5503-2013
OI McGrath, Ronan/0000-0002-9880-5741; Walker, Marc/0000-0002-5522-0516
FU EPSRC [GR/S19080/01]; [GR/R88809/01]
FX The authors would like to thank EPSRC for funding this work under Grant
No. GR/S19080/01 and for direct access to the MEIS facility under Grant
No, GR/R88809/01. The FOM institute, Amsterdam is thanked for providing
the VEGAS code and Paul Quinn of DLS Ltd. for providing the energy
simulation software. Marian Krajci is thanked for providing the 2/1
approximant structural model used in the simulations.
NR 25
TC 4
Z9 4
U1 1
U2 11
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 9
PY 2010
VL 82
IS 19
AR 195418
DI 10.1103/PhysRevB.82.195418
PG 9
WC Physics, Condensed Matter
SC Physics
GA 677MD
UT WOS:000283995600011
ER
PT J
AU Yang, YF
Held, K
AF Yang, Y. -F.
Held, K.
TI Dynamical mean field theory for manganites
SO PHYSICAL REVIEW B
LA English
DT Article
ID ELECTRONIC-STRUCTURE CALCULATIONS; TO-POLARON CROSSOVER; CHARGE-ORDERED
STATE; DOUBLE-EXCHANGE; COLOSSAL-MAGNETORESISTANCE; CORRELATED SYSTEMS;
MAGNETIC-FIELD; GIANT MAGNETORESISTANCE; PRINCIPLES CALCULATIONS;
PEROVSKITE MANGANITES
AB Doped and undoped manganites are modeled by the coupling between itinerant e(g) electrons and static t(2g) spins, the Jahn-Teller and breathing phonon modes, and the Coulomb interaction. We provide for a careful estimate of all parameters and solve the corresponding Hamiltonian by dynamical mean field theory. Our results for the one-electron spectrum, the optical conductivity, the dynamic and static lattice distortion, as well as the Curie temperature show the importance of all of the above ingredients for a realistic calculation as well as for describing the unusual dynamical properties of manganites including the insulating parent compound and the insulatinglike paramagnetic state of doped manganites.
C1 [Yang, Y. -F.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Yang, Y. -F.] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
[Held, K.] Vienna Univ Technol, Inst Solid State Phys, A-1040 Vienna, Austria.
RP Yang, YF (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
RI Held, Karsten/O-4178-2015
OI Held, Karsten/0000-0001-5984-8549
FU EU; FWF through SFB [ViCom F41]; U. S. Department of Energy
FX This work has been supported by the EU-Indian cooperative FP-7 network
MONAMI and the FWF through SFB ViCom F41 and Research Unit FOR 1346;
work at Los Alamos was performed under the auspices of the U. S.
Department of Energy. We thank A. Pimenov for discussions concerning the
experimental uncertainty in the resistivity.
NR 72
TC 2
Z9 2
U1 1
U2 11
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 9
PY 2010
VL 82
IS 19
AR 195109
DI 10.1103/PhysRevB.82.195109
PG 12
WC Physics, Condensed Matter
SC Physics
GA 677MD
UT WOS:000283995600006
ER
PT J
AU Aubert, B
Karyotakis, Y
Lees, JP
Poireau, V
Prencipe, E
Prudent, X
Tisserand, V
Tico, JG
Grauges, E
Martinelli, M
Palano, A
Pappagallo, M
Eigen, G
Stugu, B
Sun, L
Battaglia, M
Brown, DN
Hooberman, B
Kerth, LT
Kolomensky, YG
Lynch, G
Osipenkov, IL
Tackmann, K
Tanabe, T
Hawkes, CM
Soni, N
Watson, AT
Koch, H
Schroeder, T
Asgeirsson, DJ
Hearty, C
Mattison, TS
McKenna, JA
Barrett, M
Khan, A
Randle-Conde, A
Blinov, VE
Bukin, AD
Buzykaev, AR
Druzhinin, VP
Golubev, VB
Onuchin, AP
Serednyakov, SI
Skovpen, YI
Solodov, EP
Todyshev, KY
Bondioli, M
Curry, S
Eschrich, I
Kirkby, D
Lankford, AJ
Lund, P
Mandelkern, M
Martin, EC
Stoker, DP
Buchanan, C
Hartfiel, BL
Atmacan, H
Gary, JW
Liu, F
Long, O
Vitug, GM
Yasin, Z
Sharma, V
Campagnari, C
Hong, TM
Kovalskyi, D
Mazur, MA
Richman, JD
Beck, TW
Eisner, AM
Heusch, CA
Kroseberg, J
Lockman, WS
Martinez, AJ
Schalk, T
Schumm, BA
Seiden, A
Winstrom, LO
Cheng, CH
Doll, DA
Echenard, B
Fang, F
Hitlin, DG
Narsky, I
Ongmongkolkul, P
Piatenko, T
Porter, FC
Andreassen, R
Dubrovin, MS
Mancinelli, G
Meadows, BT
Mishra, K
Sokoloff, MD
Bloom, PC
Ford, WT
Gaz, A
Hirschauer, JF
Nagel, M
Nauenberg, U
Smith, JG
Wagner, SR
Ayad, R
Toki, WH
Feltresi, E
Hauke, A
Jasper, H
Karbach, TM
Merkel, J
Petzold, A
Spaan, B
Wacker, K
Kobel, MJ
Schubert, KR
Schwierz, R
Bernard, D
Latour, E
Verderi, M
Clark, PJ
Playfer, S
Watson, JE
Andreotti, M
Bettoni, D
Bozzi, C
Calabrese, R
Cecchi, A
Cibinetto, G
Fioravanti, E
Franchini, P
Luppi, E
Munerato, M
Negrini, M
Petrella, A
Piemontese, L
Santoro, V
Baldini-Ferroli, R
Calcaterra, A
de Sangro, R
Finocchiaro, G
Pacetti, S
Patteri, P
Peruzzi, IM
Piccolo, M
Rama, M
Zallo, A
Contri, R
Guido, E
Lo Vetere, M
Monge, MR
Passaggio, S
Patrignani, C
Robutti, E
Tosi, S
Morii, M
Adametz, A
Marks, J
Schenk, S
Uwer, U
Bernlochner, FU
Lacker, HM
Lueck, T
Volk, A
Dauncey, PD
Tibbetts, M
Behera, PK
Charles, MJ
Mallik, U
Chen, C
Cochran, J
Crawley, HB
Dong, L
Eyges, V
Meyer, WT
Prell, S
Rosenberg, EI
Rubin, AE
Gao, YY
Gritsan, AV
Guo, ZJ
Arnaud, N
Davier, M
Derkach, D
da Costa, JF
Grosdidier, G
Le Diberder, F
Lepeltier, V
Lutz, AM
Malaescu, B
Roudeau, P
Schune, MH
Serrano, J
Sordini, V
Stocchi, A
Wormser, G
Lange, DJ
Wright, DM
Bingham, I
Burke, JP
Chavez, CA
Fry, JR
Gabathuler, E
Gamet, R
Hutchcroft, DE
Payne, DJ
Touramanis, C
Bevan, AJ
Clarke, CK
Di Lodovico, F
Sacco, R
Sigamani, M
Cowan, G
Paramesvaran, S
Wren, AC
Brown, DN
Davis, CL
Denig, AG
Fritsch, M
Gradl, W
Hafner, A
Alwyn, KE
Bailey, D
Barlow, RJ
Jackson, G
Lafferty, GD
West, TJ
Yi, JI
Anderson, J
Jawahery, A
Roberts, DA
Simi, G
Tuggle, JM
Dallapiccola, C
Salvati, E
Cowan, R
Dujmic, D
Fisher, PH
Henderson, SW
Sciolla, G
Spitznagel, M
Yamamoto, RK
Zhao, M
Patel, PM
Robertson, SH
Schram, M
Biassoni, P
Lazzaro, A
Lombardo, V
Palombo, F
Stracka, S
Cremaldi, L
Godang, R
Kroeger, R
Sonnek, P
Summers, DJ
Zhao, HW
Nguyen, X
Simard, M
Taras, P
Nicholson, H
De Nardo, G
Lista, L
Monorchio, D
Onorato, G
Sciacca, C
Raven, G
Snoek, HL
Jessop, CP
Knoepfel, KJ
LoSecco, JM
Wang, WF
Corwin, LA
Honscheid, K
Kagan, H
Kass, R
Morris, JP
Rahimi, AM
Sekula, SJ
Blount, NL
Brau, J
Frey, R
Igonkina, O
Kolb, JA
Lu, M
Rahmat, R
Sinev, NB
Strom, D
Strube, J
Torrence, E
Castelli, G
Gagliardi, N
Margoni, M
Morandin, M
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Voci, C
Sanchez, PD
Ben-Haim, E
Bonneaud, GR
Briand, H
Chauveau, J
Hamon, O
Leruste, P
Marchiori, G
Ocariz, J
Perez, A
Prendki, J
Sitt, S
Gladney, L
Biasini, M
Manoni, E
Angelini, C
Batignani, G
Bettarini, S
Calderini, G
Carpinelli, M
Cervelli, A
Forti, F
Giorgi, MA
Lusiani, A
Morganti, M
Neri, N
Paoloni, E
Rizzo, G
Walsh, JJ
Pegna, DL
Lu, C
Olsen, J
Smith, AJS
Telnov, AV
Anulli, F
Baracchini, E
Cavoto, G
Faccini, R
Ferrarotto, F
Ferroni, F
Gaspero, M
Jackson, PD
Gioi, LL
Mazzoni, MA
Morganti, S
Piredda, G
Renga, F
Voena, C
Ebert, M
Hartmann, T
Schroder, H
Waldi, R
Adye, T
Franek, B
Olaiya, EO
Wilson, FF
Emery, S
Esteve, L
de Monchenault, GH
Kozanecki, W
Vasseur, G
Yeche, C
Zito, M
Allen, MT
Aston, D
Bard, DJ
Bartoldus, R
Benitez, JF
Cenci, R
Coleman, JP
Convery, MR
Dingfelder, JC
Dorfan, J
Dubois-Felsmann, GP
Dunwoodie, W
Field, RC
Sevilla, MF
Fulsom, BG
Gabareen, AM
Graham, MT
Grenier, P
Hast, C
Innes, WR
Kaminski, J
Kelsey, MH
Kim, H
Kim, P
Kocian, ML
Leith, DWGS
Li, S
Lindquist, B
Luitz, S
Luth, V
Lynch, HL
MacFarlane, DB
Marsiske, H
Messner, R
Muller, DR
Neal, H
Nelson, S
O'Grady, CP
Ofte, I
Perl, M
Ratcliff, BN
Roodman, A
Salnikov, AA
Schindler, RH
Schwiening, J
Snyder, A
Su, D
Sullivan, MK
Suzuki, K
Swain, SK
Thompson, JM
Va'vra, J
Wagner, AP
Weaver, M
West, CA
Wisniewski, WJ
Wittgen, M
Wright, DH
Wulsin, HW
Yarritu, AK
Young, CC
Ziegler, V
Chen, XR
Liu, H
Park, W
Purohit, MV
White, RM
Wilson, JR
Bellis, M
Burchat, PR
Edwards, AJ
Miyashita, TS
Ahmed, S
Alam, MS
Ernst, JA
Pan, B
Saeed, MA
Zain, SB
Soffer, A
Spanier, SM
Wogsland, BJ
Eckmann, R
Ritchie, JL
Ruland, AM
Schilling, CJ
Schwitters, RF
Wray, BC
Drummond, BW
Izen, JM
Lou, XC
Bianchi, F
Gamba, D
Pelliccioni, M
Bomben, M
Bosisio, L
Cartaro, C
Della Ricca, G
Lanceri, L
Vitale, L
Azzolini, V
Lopez-March, N
Martinez-Vidal, F
Milanes, DA
Oyanguren, A
Albert, J
Banerjee, S
Bhuyan, B
Choi, HHF
Hamano, K
King, GJ
Kowalewski, R
Lewczuk, MJ
Nugent, IM
Roney, JM
Sobie, RJ
Gershon, TJ
Harrison, PF
Ilic, J
Latham, TE
Mohanty, GB
Puccio, EMT
Band, HR
Chen, X
Dasu, S
Flood, KT
Pan, Y
Prepost, R
Vuosalo, CO
Wu, SL
AF Aubert, B.
Karyotakis, Y.
Lees, J. P.
Poireau, V.
Prencipe, E.
Prudent, X.
Tisserand, V.
Tico, J. Garra
Grauges, E.
Martinelli, M.
Palano, A.
Pappagallo, M.
Eigen, G.
Stugu, B.
Sun, L.
Battaglia, M.
Brown, D. N.
Hooberman, B.
Kerth, L. T.
Kolomensky, Yu. G.
Lynch, G.
Osipenkov, I. L.
Tackmann, K.
Tanabe, T.
Hawkes, C. M.
Soni, N.
Watson, A. T.
Koch, H.
Schroeder, T.
Asgeirsson, D. J.
Hearty, C.
Mattison, T. S.
McKenna, J. A.
Barrett, M.
Khan, A.
Randle-Conde, A.
Blinov, V. E.
Bukin, A. D.
Buzykaev, A. R.
Druzhinin, V. P.
Golubev, V. B.
Onuchin, A. P.
Serednyakov, S. I.
Skovpen, Yu. I.
Solodov, E. P.
Todyshev, K. Yu.
Bondioli, M.
Curry, S.
Eschrich, I.
Kirkby, D.
Lankford, A. J.
Lund, P.
Mandelkern, M.
Martin, E. C.
Stoker, D. P.
Buchanan, C.
Hartfiel, B. L.
Atmacan, H.
Gary, J. W.
Liu, F.
Long, O.
Vitug, G. M.
Yasin, Z.
Sharma, V.
Campagnari, C.
Hong, T. M.
Kovalskyi, D.
Mazur, M. A.
Richman, J. D.
Beck, T. W.
Eisner, A. M.
Heusch, C. A.
Kroseberg, J.
Lockman, W. S.
Martinez, A. J.
Schalk, T.
Schumm, B. A.
Seiden, A.
Winstrom, L. O.
Cheng, C. H.
Doll, D. A.
Echenard, B.
Fang, F.
Hitlin, D. G.
Narsky, I.
Ongmongkolkul, P.
Piatenko, T.
Porter, F. C.
Andreassen, R.
Dubrovin, M. S.
Mancinelli, G.
Meadows, B. T.
Mishra, K.
Sokoloff, M. D.
Bloom, P. C.
Ford, W. T.
Gaz, A.
Hirschauer, J. F.
Nagel, M.
Nauenberg, U.
Smith, J. G.
Wagner, S. R.
Ayad, R.
Toki, W. H.
Feltresi, E.
Hauke, A.
Jasper, H.
Karbach, T. M.
Merkel, J.
Petzold, A.
Spaan, B.
Wacker, K.
Kobel, M. J.
Schubert, K. R.
Schwierz, R.
Bernard, D.
Latour, E.
Verderi, M.
Clark, P. J.
Playfer, S.
Watson, J. E.
Andreotti, M.
Bettoni, D.
Bozzi, C.
Calabrese, R.
Cecchi, A.
Cibinetto, G.
Fioravanti, E.
Franchini, P.
Luppi, E.
Munerato, M.
Negrini, M.
Petrella, A.
Piemontese, L.
Santoro, V.
Baldini-Ferroli, R.
Calcaterra, A.
de Sangro, R.
Finocchiaro, G.
Pacetti, S.
Patteri, P.
Peruzzi, I. M.
Piccolo, M.
Rama, M.
Zallo, A.
Contri, R.
Guido, E.
Lo Vetere, M.
Monge, M. R.
Passaggio, S.
Patrignani, C.
Robutti, E.
Tosi, S.
Morii, M.
Adametz, A.
Marks, J.
Schenk, S.
Uwer, U.
Bernlochner, F. U.
Lacker, H. M.
Lueck, T.
Volk, A.
Dauncey, P. D.
Tibbetts, M.
Behera, P. K.
Charles, M. J.
Mallik, U.
Chen, C.
Cochran, J.
Crawley, H. B.
Dong, L.
Eyges, V.
Meyer, W. T.
Prell, S.
Rosenberg, E. I.
Rubin, A. E.
Gao, Y. Y.
Gritsan, A. V.
Guo, Z. J.
Arnaud, N.
Davier, M.
Derkach, D.
da Costa, J. Firmino
Grosdidier, G.
Le Diberder, F.
Lepeltier, V.
Lutz, A. M.
Malaescu, B.
Roudeau, P.
Schune, M. H.
Serrano, J.
Sordini, V.
Stocchi, A.
Wormser, G.
Lange, D. J.
Wright, D. M.
Bingham, I.
Burke, J. P.
Chavez, C. A.
Fry, J. R.
Gabathuler, E.
Gamet, R.
Hutchcroft, D. E.
Payne, D. J.
Touramanis, C.
Bevan, A. J.
Clarke, C. K.
Di Lodovico, F.
Sacco, R.
Sigamani, M.
Cowan, G.
Paramesvaran, S.
Wren, A. C.
Brown, D. N.
Davis, C. L.
Denig, A. G.
Fritsch, M.
Gradl, W.
Hafner, A.
Alwyn, K. E.
Bailey, D.
Barlow, R. J.
Jackson, G.
Lafferty, G. D.
West, T. J.
Yi, J. I.
Anderson, J.
Jawahery, A.
Roberts, D. A.
Simi, G.
Tuggle, J. M.
Dallapiccola, C.
Salvati, E.
Cowan, R.
Dujmic, D.
Fisher, P. H.
Henderson, S. W.
Sciolla, G.
Spitznagel, M.
Yamamoto, R. K.
Zhao, M.
Patel, P. M.
Robertson, S. H.
Schram, M.
Biassoni, P.
Lazzaro, A.
Lombardo, V.
Palombo, F.
Stracka, S.
Cremaldi, L.
Godang, R.
Kroeger, R.
Sonnek, P.
Summers, D. J.
Zhao, H. W.
Nguyen, X.
Simard, M.
Taras, P.
Nicholson, H.
De Nardo, G.
Lista, L.
Monorchio, D.
Onorato, G.
Sciacca, C.
Raven, G.
Snoek, H. L.
Jessop, C. P.
Knoepfel, K. J.
LoSecco, J. M.
Wang, W. F.
Corwin, L. A.
Honscheid, K.
Kagan, H.
Kass, R.
Morris, J. P.
Rahimi, A. M.
Sekula, S. J.
Blount, N. L.
Brau, J.
Frey, R.
Igonkina, O.
Kolb, J. A.
Lu, M.
Rahmat, R.
Sinev, N. B.
Strom, D.
Strube, J.
Torrence, E.
Castelli, G.
Gagliardi, N.
Margoni, M.
Morandin, M.
Posocco, M.
Rotondo, M.
Simonetto, F.
Stroili, R.
Voci, C.
Sanchez, P. del Amo
Ben-Haim, E.
Bonneaud, G. R.
Briand, H.
Chauveau, J.
Hamon, O.
Leruste, Ph.
Marchiori, G.
Ocariz, J.
Perez, A.
Prendki, J.
Sitt, S.
Gladney, L.
Biasini, M.
Manoni, E.
Angelini, C.
Batignani, G.
Bettarini, S.
Calderini, G.
Carpinelli, M.
Cervelli, A.
Forti, F.
Giorgi, M. A.
Lusiani, A.
Morganti, M.
Neri, N.
Paoloni, E.
Rizzo, G.
Walsh, J. J.
Pegna, D. Lopes
Lu, C.
Olsen, J.
Smith, A. J. S.
Telnov, A. V.
Anulli, F.
Baracchini, E.
Cavoto, G.
Faccini, R.
Ferrarotto, F.
Ferroni, F.
Gaspero, M.
Jackson, P. D.
Gioi, L. Li
Mazzoni, M. A.
Morganti, S.
Piredda, G.
Renga, F.
Voena, C.
Ebert, M.
Hartmann, T.
Schroeder, H.
Waldi, R.
Adye, T.
Franek, B.
Olaiya, E. O.
Wilson, F. F.
Emery, S.
Esteve, L.
de Monchenault, G. Hamel
Kozanecki, W.
Vasseur, G.
Yeche, Ch.
Zito, M.
Allen, M. T.
Aston, D.
Bard, D. J.
Bartoldus, R.
Benitez, J. F.
Cenci, R.
Coleman, J. P.
Convery, M. R.
Dingfelder, J. C.
Dorfan, J.
Dubois-Felsmann, G. P.
Dunwoodie, W.
Field, R. C.
Sevilla, M. Franco
Fulsom, B. G.
Gabareen, A. M.
Graham, M. T.
Grenier, P.
Hast, C.
Innes, W. R.
Kaminski, J.
Kelsey, M. H.
Kim, H.
Kim, P.
Kocian, M. L.
Leith, D. W. G. S.
Li, S.
Lindquist, B.
Luitz, S.
Luth, V.
Lynch, H. L.
MacFarlane, D. B.
Marsiske, H.
Messner, R.
Muller, D. R.
Neal, H.
Nelson, S.
O'Grady, C. P.
Ofte, I.
Perl, M.
Ratcliff, B. N.
Roodman, A.
Salnikov, A. A.
Schindler, R. H.
Schwiening, J.
Snyder, A.
Su, D.
Sullivan, M. K.
Suzuki, K.
Swain, S. K.
Thompson, J. M.
Va'vra, J.
Wagner, A. P.
Weaver, M.
West, C. A.
Wisniewski, W. J.
Wittgen, M.
Wright, D. H.
Wulsin, H. W.
Yarritu, A. K.
Young, C. C.
Ziegler, V.
Chen, X. R.
Liu, H.
Park, W.
Purohit, M. V.
White, R. M.
Wilson, J. R.
Bellis, M.
Burchat, P. R.
Edwards, A. J.
Miyashita, T. S.
Ahmed, S.
Alam, M. S.
Ernst, J. A.
Pan, B.
Saeed, M. A.
Zain, S. B.
Soffer, A.
Spanier, S. M.
Wogsland, B. J.
Eckmann, R.
Ritchie, J. L.
Ruland, A. M.
Schilling, C. J.
Schwitters, R. F.
Wray, B. C.
Drummond, B. W.
Izen, J. M.
Lou, X. C.
Bianchi, F.
Gamba, D.
Pelliccioni, M.
Bomben, M.
Bosisio, L.
Cartaro, C.
Della Ricca, G.
Lanceri, L.
Vitale, L.
Azzolini, V.
Lopez-March, N.
Martinez-Vidal, F.
Milanes, D. A.
Oyanguren, A.
Albert, J.
Banerjee, Sw.
Bhuyan, B.
Choi, H. H. F.
Hamano, K.
King, G. J.
Kowalewski, R.
Lewczuk, M. J.
Nugent, I. M.
Roney, J. M.
Sobie, R. J.
Gershon, T. J.
Harrison, P. F.
Ilic, J.
Latham, T. E.
Mohanty, G. B.
Puccio, E. M. T.
Band, H. R.
Chen, X.
Dasu, S.
Flood, K. T.
Pan, Y.
Prepost, R.
Vuosalo, C. O.
Wu, S. L.
CA BABAR Collaboration
TI Correlated leading baryon-antibaryon production in e(+)e(-) ->
c(c)over-bar -> Lambda(+)(c)(Lambda)over-bar(c)(-)X
SO PHYSICAL REVIEW D
LA English
DT Article
ID HADRONIC Z(0) DECAYS; LAMBDA(LAMBDA)OVER-BAR CORRELATIONS; LAMBDA;
ANNIHILATION; PAIRS
AB We present a study of 649 +/- 35 e(+)e(-) -> c (c) over bar events produced at root s approximate to 10.6 GeV containing both Lambda(+)(c) baryon and a (Lambda) over bar (-)(c) antibaryon. The number observed is roughly 4 times that expected if the leading charmed hadron types are uncorrelated, confirming an observation by the CLEO Collaboration. We find a 2-jet topology in these events but very few additional baryons, demonstrating that the primary c and (c) over bar are predominantly contained in a correlated baryon-antibaryon system. In addition to the charmed baryons we observe on average 2.6 +/- 0.2 charged intermediate mesons, predominantly pions, carrying 65% of the remaining energy.
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[Tico, J. Garra; Grauges, E.] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain.
[Martinelli, M.; Palano, A.; Pappagallo, M.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
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[Eigen, G.; Stugu, B.; Sun, L.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway.
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[Chen, X. R.; Liu, H.; Park, W.; Purohit, M. V.; White, R. M.; Wilson, J. R.] Univ S Carolina, Columbia, SC 29208 USA.
[Bellis, M.; Burchat, P. R.; Edwards, A. J.; Miyashita, T. S.] Stanford Univ, Stanford, CA 94305 USA.
[Ahmed, S.; Alam, M. S.; Ernst, J. A.; Pan, B.; Saeed, M. A.; Zain, S. B.] SUNY Albany, Albany, NY 12222 USA.
[Soffer, A.] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel.
[Spanier, S. M.; Wogsland, B. J.] Univ Tennessee, Knoxville, TN 37996 USA.
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[Drummond, B. W.; Izen, J. M.; Lou, X. C.] Univ Texas Dallas, Richardson, TX 75083 USA.
[Bianchi, F.; Gamba, D.; Pelliccioni, M.] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy.
[Bianchi, F.; Gamba, D.; Pelliccioni, M.] Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy.
[Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy.
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[Band, H. R.; Chen, X.; Dasu, S.; Flood, K. T.; Pan, Y.; Prepost, R.; Vuosalo, C. O.; Wu, S. L.] Univ Wisconsin, Madison, WI 53706 USA.
[Carpinelli, M.] Univ Sassari, I-07100 Sassari, Italy.
RP Aubert, B (reprint author), Univ Savoie, CNRS, IN2P3, LAPP, F-74941 Annecy Le Vieux, France.
RI Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Lusiani,
Alberto/N-2976-2015; Morandin, Mauro/A-3308-2016; Lusiani,
Alberto/A-3329-2016; Stracka, Simone/M-3931-2015; Della Ricca,
Giuseppe/B-6826-2013; Di Lodovico, Francesca/L-9109-2016; Pappagallo,
Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Frey,
Raymond/E-2830-2016; Martinez Vidal, F*/L-7563-2014; Neri,
Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo,
Marcello/I-6043-2012; de Sangro, Riccardo/J-2901-2012; Saeed, Mohammad
Alam/J-7455-2012; Negrini, Matteo/C-8906-2014; Patrignani,
Claudia/C-5223-2009; Monge, Maria Roberta/G-9127-2012; Oyanguren,
Arantza/K-6454-2014; Luppi, Eleonora/A-4902-2015; Calabrese,
Roberto/G-4405-2015;
OI Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere,
Maurizio/0000-0002-6520-4480; Lusiani, Alberto/0000-0002-6876-3288;
Morandin, Mauro/0000-0003-4708-4240; Lusiani,
Alberto/0000-0002-6876-3288; Stracka, Simone/0000-0003-0013-4714; Della
Ricca, Giuseppe/0000-0003-2831-6982; Di Lodovico,
Francesca/0000-0003-3952-2175; Pappagallo, Marco/0000-0001-7601-5602;
Calcaterra, Alessandro/0000-0003-2670-4826; Frey,
Raymond/0000-0003-0341-2636; Martinez Vidal, F*/0000-0001-6841-6035;
Neri, Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965;
Rotondo, Marcello/0000-0001-5704-6163; de Sangro,
Riccardo/0000-0002-3808-5455; Saeed, Mohammad Alam/0000-0002-3529-9255;
Negrini, Matteo/0000-0003-0101-6963; Patrignani,
Claudia/0000-0002-5882-1747; Monge, Maria Roberta/0000-0003-1633-3195;
Oyanguren, Arantza/0000-0002-8240-7300; Luppi,
Eleonora/0000-0002-1072-5633; Calabrese, Roberto/0000-0002-1354-5400;
Raven, Gerhard/0000-0002-2897-5323
FU DOE (USA); NSF (USA); NSERC (Canada); CEA (France); CNRS-IN2P3 (France);
BMBF (Germany); DFG (Germany); INFN (Italy); FOM (The Netherlands); NFR
(Norway); MES (Russia); MEC (Spain); STFC (United Kingdom); Marie Curie
EIF (European Union); A. P. Sloan Foundation
FX We are grateful for the excellent luminosity and machine conditions
provided by our PEP-II colleagues, and for the substantial dedicated
effort from the computing organizations that support BABAR. The
collaborating institutions wish to thank SLAC for its support and kind
hospitality. This work is supported by DOE and NSF (USA), NSERC
(Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN
(Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MEC (Spain),
and STFC (United Kingdom). Individuals have received support from the
Marie Curie EIF (European Union) and the A. P. Sloan Foundation.
NR 23
TC 2
Z9 2
U1 0
U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 9
PY 2010
VL 82
IS 9
AR 091102
DI 10.1103/PhysRevD.82.091102
PG 8
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 677MO
UT WOS:000283996700001
ER
PT J
AU Kaiser, S
Dressel, M
Sun, Y
Greco, A
Schlueter, JA
Gard, GL
Drichko, N
AF Kaiser, S.
Dressel, M.
Sun, Y.
Greco, A.
Schlueter, J. A.
Gard, G. L.
Drichko, N.
TI Bandwidth Tuning Triggers Interplay of Charge Order and
Superconductivity in Two-Dimensional Organic Materials
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID ELECTRONIC BAND-STRUCTURE; BEDT-TTF; STRUCTURAL GENEALOGY;
OPTICAL-PROPERTIES; FERMI-SURFACE; CONDUCTORS;
BIS(ETHYLENEDITHIO)TETRATHIAFULVALENE; BETA''-(BEDT-TTF)(2)SF5CH2CF2SO3;
CONDUCTIVITY; SPECTROSCOPY
AB We observe charge-order fluctuations in the quasi-two-dimensional organic superconductor beta '' - (BEDT - TTF)(2)SF(5)CH(2)CF(2)SO(3), both by means of vibrational spectroscopy, locally probing the fluctuating charge order, and by investigating the in-plane dynamical response by infrared reflectance spectroscopy. The decrease of the effective electronic interaction in an isostructural metal suppresses both charge-order fluctuations and superconductivity, pointing to their interplay. We compare the results of our experiments with calculations on the extended Hubbard model.
C1 [Kaiser, S.; Dressel, M.; Sun, Y.; Drichko, N.] Univ Stuttgart, Inst Phys, D-70550 Stuttgart, Germany.
[Greco, A.] UNR CONICET, Fac Ciencias Exactas Ingn & Agrimensura, Rosario, Santa Fe, Argentina.
[Greco, A.] UNR CONICET, Inst Fis Rosario, Rosario, Santa Fe, Argentina.
[Schlueter, J. A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Gard, G. L.] Portland State Univ, Dept Chem, Portland, OR USA.
[Drichko, N.] AF Ioffe Phys Tech Inst, St Petersburg, Russia.
RP Drichko, N (reprint author), Univ Stuttgart, Inst Phys, Pfaffenwaldring 57, D-70550 Stuttgart, Germany.
EM drichko@pi1.physik.uni-stuttgart.de
RI Dressel, Martin/D-3244-2012; Kaiser, Stefan/B-7788-2008
OI Kaiser, Stefan/0000-0001-9862-2788
FU DFG; Margarethe von Wrangell program; U.S. DOE [DE-AC02-06CH11357]; NSF
[Che-9904316]
FX We thank S. Yasin, A. Dengl, and M. Herbik for performing measurements
and J. Merino, M. Dumm, Ch. Hotta, U. Nagel, T. Room, and N. P. Armitage
for valuable discussions. The work was supported by the DFG. N. D.
acknowledges support from the Margarethe von Wrangell program. Work at
Argonne National Laboratory is sponsored by U.S. DOE Contract No.
DE-AC02-06CH11357. Work at Portland State was supported by the NSF
(Che-9904316).
NR 47
TC 19
Z9 19
U1 0
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 9
PY 2010
VL 105
IS 20
AR 206402
DI 10.1103/PhysRevLett.105.206402
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 677NR
UT WOS:000283999600007
PM 21231250
ER
PT J
AU Jensen, HM
Albers, AE
Malley, KR
Londer, YY
Cohen, BE
Helms, BA
Weigele, P
Groves, JT
Ajo-Franklin, CM
AF Jensen, Heather M.
Albers, Aaron E.
Malley, Konstantin R.
Londer, Yuri Y.
Cohen, Bruce E.
Helms, Brett A.
Weigele, Peter
Groves, Jay T.
Ajo-Franklin, Caroline M.
TI Engineering of a synthetic electron conduit in living cells
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE cytochrome c; nanobioelectronics; synthetic biology; iron reduction;
living-nonliving interfaces
ID SHEWANELLA-ONEIDENSIS MR-1; OUTER-MEMBRANE CYTOCHROMES; DISSIMILATORY
IRON REDUCTION; ESCHERICHIA-COLI; PUTREFACIENS MR-1; FUEL-CELL; OMCA;
EXPRESSION; MTRC; GEOBACTER
AB Engineering efficient, directional electronic communication between living and nonliving systems has the potential to combine the unique characteristics of both materials for advanced biotechnological applications. However, the cell membrane is designed by nature to be an insulator, restricting the flow of charged species; therefore, introducing a biocompatible pathway for transferring electrons across the membrane without disrupting the cell is a significant challenge. Here we describe a genetic strategy to move intracellular electrons to an inorganic extracellular acceptor along a molecularly defined route. To do so, we reconstitute a portion of the extracellular electron transfer chain of Shewanella oneidensis MR-1 into the model microbe Escherichia coli. This engineered E. coli can reduce metal ions and solid metal oxides similar to 8x and similar to 4x faster than its parental strain. We also find that metal oxide reduction is more efficient when the extracellular electron acceptor has nanoscale dimensions. This work demonstrates that a genetic cassette can create a conduit for electronic communication from living cells to inorganic materials, and it highlights the importance of matching the size scale of the protein donors to inorganic acceptors.
C1 [Jensen, Heather M.; Groves, Jay T.; Ajo-Franklin, Caroline M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
[Albers, Aaron E.; Malley, Konstantin R.; Cohen, Bruce E.; Helms, Brett A.; Groves, Jay T.; Ajo-Franklin, Caroline M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Londer, Yuri Y.; Weigele, Peter] New England Biolabs Inc, Ipswich, MA 01938 USA.
[Jensen, Heather M.; Groves, Jay T.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Groves, Jay T.] Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA.
RP Ajo-Franklin, CM (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
EM cajo-franklin@lbl.gov
RI Jensen, Henrik /F-8407-2011
FU Office of Science, Office of Basic Energy Sciences, of the U.S.
Department of Energy [DE-AC02-05CH11231]
FX We thank Steven W. Singer (Lawrence Berkeley National Lab, Berkeley, CA)
for providing the ccm plasmid pEC86 and Prof. Daad Saffarini (University
of Wisconsin-Milwaukee, Milwaukee, WI) for a generous gift of the
anti-MtrB antibody. This work, carried out at the Molecular Foundry, and
H.M.J. were supported by the Office of Science, Office of Basic Energy
Sciences, of the U.S. Department of Energy under Contract
DE-AC02-05CH11231.
NR 53
TC 64
Z9 66
U1 2
U2 70
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD NOV 9
PY 2010
VL 107
IS 45
BP 19213
EP 19218
DI 10.1073/pnas.1009645107
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 677MZ
UT WOS:000283997800019
PM 20956333
ER
PT J
AU Norby, RJ
Warren, JM
Iversen, CM
Medlyn, BE
McMurtrie, RE
AF Norby, Richard J.
Warren, Jeffrey M.
Iversen, Colleen M.
Medlyn, Belinda E.
McMurtrie, Ross E.
TI CO2 enhancement of forest productivity constrained by limited nitrogen
availability
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE CO2 fertilization; free air CO2 enrichment; global carbon cycle;
sweetgum; coupled climate-carbon cycle models
ID ATMOSPHERIC CARBON-DIOXIDE; ELEVATED CO2; CLIMATE-CHANGE; SWEETGUM
PLANTATION; DECIDUOUS FOREST; FACE EXPERIMENTS; SOIL-NITROGEN;
RESPONSES; LIMITATION; ENRICHMENT
AB Stimulation of terrestrial plant production by rising CO2 concentration is projected to reduce the airborne fraction of anthropogenic CO2 emissions. Coupled climate-carbon cycle models are sensitive to this negative feedback on atmospheric CO2, but model projections are uncertain because of the expectation that feedbacks through the nitrogen (N) cycle will reduce this so-called CO2 fertilization effect. We assessed whether N limitation caused a reduced stimulation of net primary productivity (NPP) by elevated atmospheric CO2 concentration over 11 y in a free-air CO2 enrichment (FACE) experiment in a deciduous Liquidambar styraciflua (sweetgum) forest stand in Tennessee. During the first 6 y of the experiment, NPP was significantly enhanced in forest plots exposed to 550 ppm CO2 compared with NPP in plots in current ambient CO2, and this was a consistent and sustained response. However, the enhancement of NPP under elevated CO2 declined from 24% in 2001-2003 to 9% in 2008. Global analyses that assume a sustained CO2 fertilization effect are no longer supported by this FACE experiment. N budget analysis supports the premise that N availability was limiting to tree growth and declining over time -an expected consequence of stand development, which was exacerbated by elevated CO2. Leaf-and stand-level observations provide mechanistic evidence that declining N availability constrained the tree response to elevated CO2; these observations are consistent with stand-level model projections. This FACE experiment provides strong rationale and process understanding for incorporating N limitation and N feedback effects in ecosystem and global models used in climate change assessments.
C1 [Norby, Richard J.; Warren, Jeffrey M.; Iversen, Colleen M.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37830 USA.
[Medlyn, Belinda E.] Macquarie Univ, Dept Biol Sci, N Ryde, NSW 2109, Australia.
[McMurtrie, Ross E.] Univ New S Wales, Sch Biol Earth & Environm Sci, Sydney, NSW 2052, Australia.
RP Norby, RJ (reprint author), Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37830 USA.
EM rjn@ornl.gov
RI Warren, Jeffrey/B-9375-2012; Norby, Richard/C-1773-2012; Iversen,
Colleen/B-8983-2012;
OI Warren, Jeffrey/0000-0002-0680-4697; Norby, Richard/0000-0002-0238-9828;
Medlyn, Belinda/0000-0001-5728-9827
FU US Department of Energy, Office of Science, Biological and Environmental
Research
FX We thank J. Childs, J. Riggs, and D. Sluss for sustained assistance with
operation of the experimental facility; S. Jawdy, C. Sheehan, C. DeVan,
K. Sides, E. Felker-Quinn, G. Jimenez, C. Campany, and C. Bruno for
assistance with data collection and sample processing; and M. L. Tharp
for data management. Funding was provided by the US Department of
Energy, Office of Science, Biological and Environmental Research
Program.
NR 41
TC 313
Z9 325
U1 24
U2 288
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD NOV 9
PY 2010
VL 107
IS 45
BP 19368
EP 19373
DI 10.1073/pnas.1006463107
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 677MZ
UT WOS:000283997800045
PM 20974944
ER
PT J
AU Chiam, SY
Singh, R
Zhang, WL
Bettiol, AA
AF Chiam, Sher-Yi
Singh, Ranjan
Zhang, Weili
Bettiol, Andrew A.
TI Controlling metamaterial resonances via dielectric and aspect ratio
effects
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID PLANAR TERAHERTZ METAMATERIALS; TIME-DOMAIN SPECTROSCOPY; FREQUENCY
AB We study ways to enhance the sensitivity and dynamic tuning range of the fundamental inductor-capacitor (LC) resonance in split ring resonators (SRRs) by controlling the aspect ratio of the SRRs and their substrate thickness. We conclude that both factors can significantly affect the LC resonance. We show that metafilms consisting of low height SRRs on a thin substrate are most sensitive to changes in their dielectric environment and thus show excellent potential for sensing applications. (C) 2010 American Institute of Physics. [doi:10.1063/1.3514248]
C1 [Chiam, Sher-Yi; Bettiol, Andrew A.] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore.
[Chiam, Sher-Yi] Natl Univ Singapore, High Sch Math & Sci, Singapore 129957, Singapore.
[Singh, Ranjan; Zhang, Weili] Oklahoma State Univ, Sch Elect & Comp Engn, Stillwater, OK 74078 USA.
[Singh, Ranjan] Los Alamos Natl Lab, Mat Phys & Applicat Div, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA.
RP Chiam, SY (reprint author), Natl Univ Singapore, Dept Phys, 2 Sci Dr 3, Singapore 117542, Singapore.
EM phybaa@nus.edu.sg
RI Singh, Ranjan/B-4091-2010; Bettiol, Andrew/D-5699-2011; Zhang,
Weili/C-5416-2011
OI Singh, Ranjan/0000-0001-8068-7428; Bettiol, Andrew/0000-0001-5242-3644;
Zhang, Weili/0000-0002-8591-0200
FU National University of Singapore [NUS R144 000 204 646]; U.S. National
Science Foundation [ECCS-0725764]
FX The work was funded partially by the National University of Singapore
Grant No. NUS R144 000 204 646 and the U.S. National Science Foundation
Grant No. ECCS-0725764
NR 19
TC 36
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U1 3
U2 14
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD NOV 8
PY 2010
VL 97
IS 19
AR 191906
DI 10.1063/1.3514248
PG 3
WC Physics, Applied
SC Physics
GA 679OE
UT WOS:000284169900022
ER
PT J
AU Di, ZF
Huang, MQ
Wang, YQ
Nastasi, M
AF Di, Z. F.
Huang, M. Q.
Wang, Y. Q.
Nastasi, M.
TI Dynamic annealing versus thermal annealing effects on the formation of
hydrogen-induced defects in silicon
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID SINGLE-CRYSTAL SILICON; INDUCED PLATELETS; IMPLANTATION; SI;
TEMPERATURE; EXFOLIATION; COMPLEXES; FLUENCE; CUT
AB The influence of dynamic and thermal annealing on hydrogen platelet formation in silicon have been studied. For cryogenic and room temperature implantations, where dynamic annealing is suppressed, hydrogen platelets form upon subsequent thermal annealing on primarily (100) planes. However, under high temperature implantation (dynamic annealing), a high density hydrogen platelet network consisting of both (111) platelets and (100) platelets is observed. Our findings demonstrate that hydrogen implantation under dynamic annealing conditions leads to a modification of the implantation-induced stress, which eventually guide the nucleation and growth of hydrogen-induced platelets. (C) 2010 American Institute of Physics. [doi:10.1063/1.3513352]
C1 [Di, Z. F.] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China.
[Huang, M. Q.] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA.
[Di, Z. F.; Wang, Y. Q.; Nastasi, M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Di, ZF (reprint author), Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China.
EM dizengfeng@hotmail.com
NR 23
TC 11
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U1 0
U2 15
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD NOV 8
PY 2010
VL 97
IS 19
AR 194101
DI 10.1063/1.3513352
PG 3
WC Physics, Applied
SC Physics
GA 679OE
UT WOS:000284169900086
ER
PT J
AU Dyer, GC
Vinh, NQ
Allen, SJ
Aizin, GR
Mikalopas, J
Reno, JL
Shaner, EA
AF Dyer, G. C.
Vinh, N. Q.
Allen, S. J.
Aizin, G. R.
Mikalopas, J.
Reno, J. L.
Shaner, E. A.
TI A terahertz plasmon cavity detector
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID 2-DIMENSIONAL ELECTRON CHANNEL; FIELD-EFFECT TRANSISTOR;
INVERSION-LAYERS; SLOT DIODE; MODES; OSCILLATIONS; RADIATION
AB Sensitivity of a plasmonic detector is enhanced by integrating a broadband log-periodic antenna with a two-dimensional plasma cavity that is defined by source, drain, and multiple gates of a GaAs/AlGaAs high electron mobility transistor. Both narrow-band terahertz detection and a rich harmonic spectrum are evident. With a bolometric sensor in the channel, we report responsivity, on resonance at 235-240 GHz and at 20 K, of up to 7 kV/W and a noise equivalent power of 5 x 10(-10) W/Hz(1/2). (C) 2010 American Institute of Physics. [doi:10.1063/1.3513339]
C1 [Dyer, G. C.; Vinh, N. Q.; Allen, S. J.] Univ Calif Santa Barbara, Inst Terahertz Sci & Technol, Santa Barbara, CA 93106 USA.
[Aizin, G. R.; Mikalopas, J.] CUNY, Kingsborough Coll, Brooklyn, NY 11235 USA.
[Reno, J. L.; Shaner, E. A.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Dyer, GC (reprint author), Univ Calif Santa Barbara, Inst Terahertz Sci & Technol, Santa Barbara, CA 93106 USA.
EM gdyer@physics.ucsb.edu
FU University of Buffalo NSF-NIRT THz Collaboratory [ECS0609146]; U.S.
Department of Energy [DE-AC04-94AL85000]; U.S. Air Force Office of
Scientific Research, Arlington, VA [FA9550-09-C-0168]; Physical Sciences
Inc. Andover, MA [FI011090528]
FX The authors would like to thank Dave Enyeart and Gerry Ramian for their
assistance, maintenance and operation of the UCSB FEL facility. This
work is supported by the University of Buffalo NSF-NIRT THz
Collaboratory, Grant No. ECS0609146. This work was performed, in part,
at the Center for Integrated Nanotechnologies, a U.S. Department of
Energy, Office of Basic Energy Sciences user facility. Sandia National
Laboratories is a multiprogram laboratory operated by Sandia
Corporation, a Lockheed-Martin Co., for the U.S. Department of Energy
under Contract No. DE-AC04-94AL85000. This material is based upon work
supported by the U.S. Air Force Office of Scientific Research,
Arlington, VA under Contract No. FA9550-09-C-0168 and Physical Sciences
Inc. Andover, MA under Agreement No. FI011090528. Any opinions, findings
and conclusions or recommendations expressed in this material are those
of the author(s) and do not necessarily reflect the views of the U.S.
AFOSR or Physical Sciences Inc.
NR 22
TC 22
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U1 4
U2 21
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD NOV 8
PY 2010
VL 97
IS 19
AR 193507
DI 10.1063/1.3513339
PG 3
WC Physics, Applied
SC Physics
GA 679OE
UT WOS:000284169900080
ER
PT J
AU Fong, DD
Eastman, JA
Kim, SK
Fister, TT
Highland, MJ
Baldo, PM
Fuoss, PH
AF Fong, D. D.
Eastman, J. A.
Kim, S. K.
Fister, T. T.
Highland, M. J.
Baldo, P. M.
Fuoss, P. H.
TI In situ synchrotron x-ray characterization of ZnO atomic layer
deposition
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID TRANSPARENT CONDUCTIVE OXIDE; SURFACE-CHEMISTRY; INTERRUPTED FLOW;
GROWTH MODE; THIN-FILMS; H2O
AB The utility of in situ synchrotron x-ray scattering and fluorescence in gaining insight into the early stages of the atomic layer deposition process is demonstrated in this study of ZnO growth on Si. ZnO films are found to initially grow as islands, with the onset of coalescence occurring during the fourth growth cycle. The start of coalescence is accompanied by a small increase in surface roughness. After ten cycles of growth, the growth rate decreases from 4.2 to 3.0 angstrom per cycle, with the growth following expected self-limiting behavior. The overall growth process is consistent with the model of Puurunen and Vandervorts for substrate-inhibited growth [R. L. Puurunen and W. Vandervorst, J. Appl. Phys. 96, 7686 (2004)]. (C) 2010 American Institute of Physics. [doi:10.1063/1.3514254]
C1 [Fong, D. D.; Eastman, J. A.; Kim, S. K.; Fister, T. T.; Highland, M. J.; Baldo, P. M.; Fuoss, P. H.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Fong, DD (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM fong@anl.gov
RI Eastman, Jeffrey/E-4380-2011; Kim, Seong Keun/D-3809-2011;
OI Kim, Seong Keun/0000-0001-8712-7167; Eastman, Jeff/0000-0002-0847-4265
FU U.S. Department of Energy (DOE), Basic Energy Sciences
[DE-AC02-06CH11357]
FX We thank Jeff Elam for discussions. This work and use of the Advanced
Photon Source at Argonne National Laboratory was supported by the U.S.
Department of Energy (DOE), Basic Energy Sciences, under Contract No.
DE-AC02-06CH11357.
NR 23
TC 14
Z9 15
U1 0
U2 22
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD NOV 8
PY 2010
VL 97
IS 19
AR 191904
DI 10.1063/1.3514254
PG 3
WC Physics, Applied
SC Physics
GA 679OE
UT WOS:000284169900020
ER
PT J
AU Ihlefeld, JF
Ginn, JC
Shelton, DJ
Matias, V
Rodriguez, MA
Kotula, PG
Carroll, JF
Boreman, GD
Clem, PG
Sinclair, MB
AF Ihlefeld, J. F.
Ginn, J. C.
Shelton, D. J.
Matias, V.
Rodriguez, M. A.
Kotula, P. G.
Carroll, J. F., III
Boreman, G. D.
Clem, P. G.
Sinclair, M. B.
TI Crystal coherence length effects on the infrared optical response of MgO
thin films
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID MAGNESIUM OXIDE; REFLECTANCE; SPECTROSCOPY; DISPERSION; SCATTERING;
SPECTRA
AB The role of crystal coherence length on the infrared optical response of MgO thin films was investigated with regard to Reststrahlen band photon-phonon coupling. Preferentially (001)-oriented sputtered and evaporated ion-beam assisted deposited thin films were prepared on silicon and annealed to vary film microstructure. Film crystalline coherence was characterized by x-ray diffraction line broadening and transmission electron microscopy. The infrared dielectric response revealed a strong dependence of dielectric resonance magnitude on crystalline coherence. Shifts to lower transverse optical phonon frequencies were observed with increased crystalline coherence. Increased optical phonon damping is attributed to increasing granularity and intergrain misorientation. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3515901]
C1 [Ihlefeld, J. F.; Ginn, J. C.; Rodriguez, M. A.; Kotula, P. G.; Carroll, J. F., III; Clem, P. G.; Sinclair, M. B.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Shelton, D. J.; Boreman, G. D.] Univ Cent Florida, Coll Opt & Photon CREOL, Orlando, FL 32816 USA.
[Matias, V.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Ihlefeld, JF (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM jihlefe@sandia.gov
RI Ihlefeld, Jon/B-3117-2009; Kotula, Paul/A-7657-2011
OI Kotula, Paul/0000-0002-7521-2759
FU Laboratory Directed Research and Development Program at Sandia National
Laboratories; U.S. Department of Energy [DE-AC04-94AL85000]; U.S.
Department of Energy's Office of Electricity Delivery and Energy
Reliability
FX The authors wish to acknowledge experimental advice and critical review
from M. Lee, P. Rakich, and G. L. Brennecka. This research was supported
by the Laboratory Directed Research and Development Program at Sandia
National Laboratories. This work was performed, in part, at the Center
for Integrated Nanotechnologies, a U. S. Department of Energy, Office of
Basic Energy Sciences user facility. Sandia is a multiprogram laboratory
operated by Sandia Corporation, a Lockheed Martin Co., for the U.S.
Department of Energy under Contract No. DE-AC04-94AL85000. A portion of
this work (LANL) was supported by the U.S. Department of Energy's Office
of Electricity Delivery and Energy Reliability.
NR 21
TC 4
Z9 4
U1 1
U2 10
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD NOV 8
PY 2010
VL 97
IS 19
AR 191913
DI 10.1063/1.3515901
PG 3
WC Physics, Applied
SC Physics
GA 679OE
UT WOS:000284169900029
ER
PT J
AU Soliman, YM
Su, MF
Leseman, ZC
Reinke, CM
El-Kady, I
Olsson, RH
AF Soliman, Y. M.
Su, M. F.
Leseman, Z. C.
Reinke, C. M.
El-Kady, I.
Olsson, R. H., III
TI Phononic crystals operating in the gigahertz range with extremely wide
band gaps
SO APPLIED PHYSICS LETTERS
LA English
DT Article
AB Phononic crystals have numerous potential applications including use as filters and oscillators in communications systems and as acoustic isolators for resonant sensors such as gyroscopes. These applications are based on the ability of phononic crystals to exhibit elastic band gaps, frequency bands where the propagation of acoustic waves is forbidden. Here, we focus on solid-solid phononic crystals (solid inclusions in a solid matrix), since they typically exhibit wider band gaps than those observed with air-solid phononic crystals (air inclusions in a solid matrix). We present a micromachined solid-solid phononic crystal operating at 1.4 GHz center frequency with an ultrawide 800 MHz band gap. (C) 2010 American Institute of Physics. [doi:10.1063/1.3504701]
C1 [Olsson, R. H., III] Sandia Natl Labs, Dept Adv MEMS, Albuquerque, NM 87185 USA.
[Soliman, Y. M.; Su, M. F.] Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87131 USA.
[Leseman, Z. C.] Univ New Mexico, Dept Mech Engn, Albuquerque, NM 87131 USA.
[Reinke, C. M.; El-Kady, I.] Sandia Natl Labs, Dept Photon Microsyst Technol, Albuquerque, NM 87185 USA.
RP Olsson, RH (reprint author), Sandia Natl Labs, Dept Adv MEMS, POB 5800, Albuquerque, NM 87185 USA.
EM rholsso@sandia.gov
RI El-Kady, Ihab/D-2886-2013
OI El-Kady, Ihab/0000-0001-7417-9814
FU Laboratory Directed Research and Development program at Sandia National
Laboratories; Sandia Corporation, Lock-heed Martin Co., for the United
States Department of Energy's National Nuclear Security Administration
[AC04-94AL85000]
FX This work was supported by the Laboratory Directed Research and
Development program at Sandia National Laboratories. Sandia National
Laboratories is a multiprogram laboratory operated by the Sandia
Corporation, Lock-heed Martin Co., for the United States Department of
Energy's National Nuclear Security Administration under Contract No.
DE-AC04-94AL85000.
NR 7
TC 28
Z9 30
U1 0
U2 12
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD NOV 8
PY 2010
VL 97
IS 19
AR 193502
DI 10.1063/1.3504701
PG 3
WC Physics, Applied
SC Physics
GA 679OE
UT WOS:000284169900075
ER
PT J
AU Tracy, LA
Nordberg, EP
Young, RW
Pinilla, CB
Stalford, HL
Ten Eyck, GA
Eng, K
Childs, KD
Wendt, JR
Grubbs, RK
Stevens, J
Lilly, MP
Eriksson, MA
Carroll, MS
AF Tracy, L. A.
Nordberg, E. P.
Young, R. W.
Pinilla, C. Borras
Stalford, H. L.
Ten Eyck, G. A.
Eng, K.
Childs, K. D.
Wendt, J. R.
Grubbs, R. K.
Stevens, J.
Lilly, M. P.
Eriksson, M. A.
Carroll, M. S.
TI Double quantum dot with tunable coupling in an enhancement-mode silicon
metal-oxide semiconductor device with lateral geometry
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID COULOMB-BLOCKADE
AB We present transport measurements of a tunable silicon metal-oxide semiconductor double quantum dot device with lateral geometry. The experimentally extracted gate-to-dot capacitances show that the device is largely symmetric under the gate voltages applied. Intriguingly, these gate voltages themselves are not symmetric. A comparison with numerical simulations indicates that the applied gate voltages serve to offset an intrinsic asymmetry in the physical device. We also show a transition from a large single dot to two well isolated coupled dots, where the central gate of the device is used to controllably tune the interdot coupling. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3518058]
C1 [Tracy, L. A.; Lilly, M. P.] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA.
[Nordberg, E. P.; Eriksson, M. A.] Univ Wisconsin, Madison, WI 53706 USA.
[Pinilla, C. Borras; Stalford, H. L.] Univ Oklahoma, Norman, OK 73019 USA.
[Pinilla, C. Borras] Univ Ind Santander Colombia, Bucaramanga, Colombia.
RP Tracy, LA (reprint author), Sandia Natl Labs, Ctr Integrated Nanotechnol, POB 5800, Albuquerque, NM 87185 USA.
EM latracy@sandia.gov
FU U.S. Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL85000]
FX This work was performed, in part, at the Center for Integrated
Nanotechnologies, a U.S. DOE, Office of Basic Energy Sciences user
facility, and was supported by the Laboratory Directed Research and
Development program at Sandia National Laboratories, a multiprogram
laboratory operated by Sandia Corporation, a wholly owned subsidiary
Lockheed-Martin Co., for the U.S. Department of Energy's National
Nuclear Security Administration under Contract No. DE-AC04-94AL85000.
NR 16
TC 17
Z9 17
U1 2
U2 16
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD NOV 8
PY 2010
VL 97
IS 19
AR 192110
DI 10.1063/1.3518058
PG 3
WC Physics, Applied
SC Physics
GA 679OE
UT WOS:000284169900041
ER
PT J
AU Allen, MS
Mayes, RL
Bergman, EJ
AF Allen, Matthew S.
Mayes, Randall L.
Bergman, Elizabeth J.
TI Experimental modal substructuring to couple and uncouple substructures
with flexible fixtures and multi-point connections
SO JOURNAL OF SOUND AND VIBRATION
LA English
DT Article
ID STRUCTURAL MODIFICATION; SYSTEM-IDENTIFICATION; NATURAL FREQUENCIES;
EXPANSION
AB Modal substructuring or component mode synthesis (CMS) has been standard practice for many decades in the analytical realm, yet a number of significant difficulties have been encountered when attempting to combine experimentally derived modal models with analytical ones or when predicting the effect of structural modifications using experimental measurements. This work presents a new method that removes the effects of a flexible fixture from an experimentally obtained modal model. It can be viewed as an extension to the approach where rigid masses are removed from a structure. The approach presented here improves the modal basis of the substructure, so that it can be used to more accurately estimate the modal parameters of the built-up system. New types of constraints are also presented, which constrain the modal degrees of freedom of the substructures, avoiding the need to estimate the connection point displacements and rotations. These constraints together with the use of a flexible fixture enable a new approach for joining structures, especially those with statically indeterminate multi-point connections, such as two circular flanges that are joined by many more bolts than required to enforce compatibility if the substructures were rigid. Fixture design is discussed, one objective of which is to achieve a mass-loaded boundary condition that exercises the substructure at the connection point as it is in the built up system. The proposed approach is demonstrated with two examples using experimental measurements from laboratory systems. The first is a simple problem of joining two beams of differing lengths, while the second consists of a three-dimensional structure comprising a circular plate that is bolted at eight locations to a flange on a cylindrical structure. In both cases frequency response functions predicted by the substructuring methods agree well with those of the actual coupled structures over a significant range of frequencies. (C) 2010 Elsevier Ltd. All rights reserved.
C1 [Allen, Matthew S.] Univ Wisconsin, Dept Engn Phys, Madison, WI 53706 USA.
[Mayes, Randall L.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Bergman, Elizabeth J.] Madison Area Tech Coll, Madison, WI 53704 USA.
RP Allen, MS (reprint author), Univ Wisconsin, Dept Engn Phys, 535 Engn Res Bldg,1500 Engn Dr, Madison, WI 53706 USA.
EM msallen@engr.wisc.edu
RI Allen, Matthew/H-4068-2011
FU Sandia National Laboratories; United States Department of Energy's
National Nuclear Security Administration [DE-AC04-94AL85000]
FX This work was supported by, and some of this work was performed at
Sandia National Laboratories. Sandia is a multiprogram laboratory
operated by Sandia Corporation, a Lockheed Martin Company, for the
United States Department of Energy's National Nuclear Security
Administration under Contract DE-AC04-94AL85000. The authors also wish
to thank the reviewers of the preliminary version of this article for
their thorough reviews and the insights that they shared.
NR 40
TC 29
Z9 29
U1 1
U2 18
PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 0022-460X
J9 J SOUND VIB
JI J. Sound Vibr.
PD NOV 8
PY 2010
VL 329
IS 23
BP 4891
EP 4906
DI 10.1016/j.jsv.2010.06.007
PG 16
WC Acoustics; Engineering, Mechanical; Mechanics
SC Acoustics; Engineering; Mechanics
GA 638LK
UT WOS:000280896200005
ER
PT J
AU Liu, HL
Carr, GL
Worsley, KA
Itkis, ME
Haddon, RC
Caruso, AN
Tung, LC
Wang, YJ
AF Liu, H. L.
Carr, G. L.
Worsley, K. A.
Itkis, M. E.
Haddon, R. C.
Caruso, A. N.
Tung, L-C
Wang, Y. J.
TI Exploring the charge dynamics in graphite nanoplatelets by THz and
infrared spectroscopy
SO NEW JOURNAL OF PHYSICS
LA English
DT Article
ID CYCLOTRON-RESONANCE; LANDAU-LEVELS; BERRYS PHASE; GRAPHENE; FILMS; LAYER
AB We present the results of THz, infrared and magneto-optical measurements performed on graphite nanoplatelet films as a function of temperature (4.2-300 K) and magnetic field (0-17.5 T). An effective medium analysis of the low-energy spectral response indicates that the nanoplatelet material is well described by a Drude function plus two infrared absorption bands. Interestingly, the Drude plasma frequency (similar to 1675 cm(-1)) decreases slowly with temperature, whereas the carrier scattering rate (similar to 175 cm(-1)) is temperature independent. Furthermore, measurements in an applied magnetic field at 4.2K show that a large portion of the Drude spectral weight is transferred to finite frequency features corresponding to various Landau-level transitions. Some of these transition energies scale as root B, as expected for Dirac-like quasi-particles in graphene and observed in other graphene-like materials. Thus, our results are consistent with recent theoretical calculations indicating that the spectrum of multilayer graphene can be decomposed into subsystems effectively identical to monolayer or bilayer graphene.
C1 [Liu, H. L.] Natl Taiwan Normal Univ, Dept Phys, Taipei 11677, Taiwan.
[Carr, G. L.] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
[Worsley, K. A.; Itkis, M. E.; Haddon, R. C.] Univ Calif Riverside, Dept Chem & Chem & Environm Engn, Ctr Nanoscale Sci & Engn, Riverside, CA 92521 USA.
[Caruso, A. N.] Univ Missouri, Dept Phys, Kansas City, MO 64110 USA.
[Tung, L-C; Wang, Y. J.] Natl High Magnet Field Lab, Tallahassee, FL 32310 USA.
RP Liu, HL (reprint author), Natl Taiwan Normal Univ, Dept Phys, Taipei 11677, Taiwan.
EM hliu@phy.ntnu.edu.tw
RI Haddon, Robert/A-2528-2008
OI Haddon, Robert/0000-0002-7903-5139
FU National Science Council of Republic of China [NSC
98-2112-M-003-004-MY3]; Department of Energy at NSLS
[DE-AC02-98CH10886]; State of Florida (NHMFL)
FX We thank D B Tanner, T Timusk, E J Nichol, J P Carbotte, Igor F Herbut
and E Vescovo for useful discussions and R Smith for help at the U4IR
beamline. We acknowledge financial support from the National Science
Council of Republic of China under grant number NSC
98-2112-M-003-004-MY3, from the Department of Energy under contract
DE-AC02-98CH10886 at NSLS and from the state of Florida (NHMFL).
NR 36
TC 2
Z9 2
U1 0
U2 13
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1367-2630
J9 NEW J PHYS
JI New J. Phys.
PD NOV 8
PY 2010
VL 12
AR 113012
DI 10.1088/1367-2630/12/11/113012
PG 11
WC Physics, Multidisciplinary
SC Physics
GA 687IW
UT WOS:000284773200003
ER
PT J
AU Zortman, WA
Trotter, DC
Watts, MR
AF Zortman, William A.
Trotter, Douglas C.
Watts, Michael R.
TI Silicon photonics manufacturing
SO OPTICS EXPRESS
LA English
DT Article
ID ELECTROOPTIC MODULATOR; FILMS
AB Most demonstrations in silicon photonics are done with single devices that are targeted for use in future systems. One of the costs of operating multiple devices concurrently on a chip in a system application is the power needed to properly space resonant device frequencies on a system's frequency grid. We asses this power requirement by quantifying the source and impact of process induced resonant frequency variation for microdisk resonators across individual die, entire wafers and wafer lots for separate process runs. Additionally we introduce a new technique, utilizing the Transverse Electric (TE) and Transverse Magnetic (TM) modes in microdisks, to extract thickness and width variations across wafers and dice. Through our analysis we find that a standard six inch Silicon on Insulator (SOI) 0.35 mu m process controls microdisk resonant frequencies for the TE fundamental resonances to within 1THz across a wafer and 105GHz within a single die. Based on demonstrated thermal tuner technology, a stable manufacturing process exhibiting this level of variation can limit the resonance trimming power per resonant device to 231 mu W. Taken in conjunction with the power to compensate for thermal environmental variations, the expected power requirement to compensate for fabrication-induced non-uniformities is 17% of that total. This leads to the prediction that thermal tuning efficiency is likely to have the most dominant impact on the overall power budget of silicon photonics resonator technology. (C) 2010 Optical Society of America
C1 [Zortman, William A.; Trotter, Douglas C.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Zortman, William A.] Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA.
[Watts, Michael R.] MIT, Elect Res Lab, Cambridge, MA 02139 USA.
RP Zortman, WA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM wzortm@sandia.gov
FU United States Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX Sandia is a multiprogram laboratory operated by Sandia Corporation, a
Lockheed Martin Company, for the United States Department of Energy's
National Nuclear Security Administration under contract
DE-AC04-94AL85000.
NR 21
TC 86
Z9 86
U1 1
U2 20
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD NOV 8
PY 2010
VL 18
IS 23
BP 23598
EP 23607
DI 10.1364/OE.18.023598
PG 10
WC Optics
SC Optics
GA 676TG
UT WOS:000283940900029
PM 21164704
ER
PT J
AU Wu, XH
Gray, SK
Pelton, M
AF Wu, Xiaohua
Gray, Stephen K.
Pelton, Matthew
TI Quantum-dot-induced transparency in a nanoscale plasmonic resonator
SO OPTICS EXPRESS
LA English
DT Article
ID ELECTROMAGNETICALLY INDUCED TRANSPARENCY; CDSE; MOLECULES; METALS;
ANALOG
AB We investigate the near-field optical coupling between a single semiconductor nanocrystal (quantum dot) and a nanometer-scale plasmonic metal resonator using rigorous electrodynamic simulations. Our calculations show that the quantum dot produces a dip in both the extinction and scattering spectra of the surface-plasmon resonator, with a particularly strong change for the scattering spectrum. A phenomenological coupled-oscillator model is used to fit the calculation results and provide physical insight, revealing the roles of Fano interference and hybridization. The results indicate that it is possible to achieve nearly complete transparency as well as enter the strong-coupling regime for a single quantum dot in the near field of a metal nanostructure. (C) 2010 Optical Society of America
C1 [Wu, Xiaohua; Gray, Stephen K.; Pelton, Matthew] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Wu, XH (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM pelton@anl.gov
RI Pelton, Matthew/H-7482-2013
OI Pelton, Matthew/0000-0002-6370-8765
FU U. S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-AC02-06CH11357]
FX Work at the Center for Nanoscale Materials was supported by the U. S.
Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract No. DE-AC02-06CH11357. We thank Jason M.
Montgomery, Tae-Woo Lee, and Lina Cao for help with FDTD programming.
NR 34
TC 51
Z9 51
U1 1
U2 28
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD NOV 8
PY 2010
VL 18
IS 23
BP 23633
EP 23645
DI 10.1364/OE.18.023633
PG 13
WC Optics
SC Optics
GA 676TG
UT WOS:000283940900033
PM 21164708
ER
PT J
AU Lee, TW
Gray, SK
AF Lee, Tae-Woo
Gray, Stephen K.
TI Remote grating-assisted excitation of narrow-band surface plasmons
SO OPTICS EXPRESS
LA English
DT Article
ID THIN METAL-FILMS; ARRAYS; SPECTROSCOPY; TRANSMISSION; ENHANCEMENT;
GENERATION; SERS
AB We show, based on theoretical analysis and realistic simulations, how a grating embedded in a dielectric substrate can excite surface plasmon polaritons (SPPs) on the top side of a flat metal film far removed from the grating. This remote SPP excitation is characterized by a narrow spectral bandwidth and a high near-field intensity relative to the standard approach for exciting SPPs. The simplicity of the structure and the fact that it requires only normally incident light should make it relevant to the many applications that benefit from high quality SPPs on a flat metal film. (C) 2010 Optical Society of America
C1 [Lee, Tae-Woo] Louisiana State Univ, Ctr Computat & Technol, Baton Rouge, LA 70803 USA.
[Gray, Stephen K.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Lee, TW (reprint author), Louisiana State Univ, Ctr Computat & Technol, 216 Johnston Hall, Baton Rouge, LA 70803 USA.
EM twlee@cct.lsu.edu
FU National Institutes of Health (NIH) under ARRA [2R01EB004761-06]; U.S.
Department of Energy, Office of Science, Office of Basic Energy Sciences
[DE-AC02-06CH11357]
FX T.-W. Lee was supported by the National Institutes of Health (NIH)
program under ARRA, grant No. 2R01EB004761-06. Computing resources were
provided by Louisiana Optical Initiative Network, or LONI. Use of the
Center for Nanoscale Materials was supported by the U.S. Department of
Energy, Office of Science, Office of Basic Energy Sciences, under
Contract No. DE-AC02-06CH11357.
NR 23
TC 5
Z9 5
U1 0
U2 15
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD NOV 8
PY 2010
VL 18
IS 23
BP 23857
EP 23864
DI 10.1364/OE.18.023857
PG 8
WC Optics
SC Optics
GA 676TG
UT WOS:000283940900055
PM 21164730
ER
PT J
AU Hau-Riege, SP
London, RA
Graf, A
Baker, SL
Soufli, R
Sobierajski, R
Burian, T
Chalupsky, J
Juha, L
Gaudin, J
Krzywinski, J
Moeller, S
Messerschmidt, M
Bozek, J
Bostedt, C
AF Hau-Riege, S. P.
London, R. A.
Graf, A.
Baker, S. L.
Soufli, R.
Sobierajski, R.
Burian, T.
Chalupsky, J.
Juha, L.
Gaudin, J.
Krzywinski, J.
Moeller, S.
Messerschmidt, M.
Bozek, J.
Bostedt, C.
TI Interaction of short x-ray pulses with low-Z x-ray optics materials at
the LCLS free-electron laser
SO OPTICS EXPRESS
LA English
DT Article
AB Materials used for hard x-ray-free-electron laser (XFEL) optics must withstand high-intensity x-ray pulses. The advent of the Linac Coherent Light Source has enabled us to expose candidate optical materials, such as bulk B4C and SiC films, to 0.83 keV XFEL pulses with pulse energies between 1 mu J and 2 mJ to determine short-pulse hard x-ray damage thresholds. The fluence required for the onset of damage for single pulses is around the melt fluence and slightly lower for multiple pulses. We observed strong mechanical cracking in the materials, which may be due to the larger penetration depths of the hard x-rays. (C) 2010 Optical Society of America
C1 [Hau-Riege, S. P.; London, R. A.; Graf, A.; Baker, S. L.; Soufli, R.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Sobierajski, R.] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland.
[Sobierajski, R.] FOM Inst Plasma Phys Rijnhuizen, NL-3430 BE Nieuwegein, Netherlands.
[Burian, T.; Chalupsky, J.; Juha, L.] Acad Sci Czech Republic, Inst Phys, Prague 18221 8, Czech Republic.
[Chalupsky, J.] Czech Tech Univ, Fac Nucl Sci & Phys Engn, CR-11519 Prague 1, Czech Republic.
[Gaudin, J.] European XFEL GmbH, D-22761 Hamburg, Germany.
[Krzywinski, J.; Moeller, S.; Messerschmidt, M.; Bozek, J.; Bostedt, C.] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
RP Hau-Riege, SP (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM hauriege1@llnl.gov
RI Messerschmidt, Marc/F-3796-2010; Bozek, John/E-9260-2010; Sobierajski,
Ryszard/E-7619-2012; Chalupsky, Jaromir/H-2079-2014; Burian,
Tomas/H-3236-2014
OI Messerschmidt, Marc/0000-0002-8641-3302; Bozek,
John/0000-0001-7486-7238; Burian, Tomas/0000-0003-3982-9978
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; Foundation for Fundamental Research on Matter
(Stichting voor Fundamenteel Onderzoek der Materie, FOM); Nederlandse
Organisatie voor Wetenschappelijk Onderzoek (NWO); Ministry of Science
and Higher Education of Poland [DESY/68/2007]; Czech Ministry of
Education [LC510, LC528, LA08024, ME10046]; Academy of Sciences of the
Czech Republic [Z10100523, IAA400100701, IAAX00100903, KAN300100702]
FX This work performed under the auspices of the U.S. Department of Energy
by Lawrence Livermore National Laboratory under Contract
DE-AC52-07NA27344. It has been partially supported by the Foundation for
Fundamental Research on Matter (Stichting voor Fundamenteel Onderzoek
der Materie, FOM) and the Nederlandse Organisatie voor Wetenschappelijk
Onderzoek (NWO), the Ministry of Science and Higher Education of Poland,
SPB nr. DESY/68/2007. This work was also partially funded by the Czech
Ministry of Education (Grant Nos LC510, LC528, LA08024, and ME10046),
and Academy of Sciences of the Czech Republic (Grant Nos Z10100523,
IAA400100701, IAAX00100903, and KAN300100702). Portions of this research
were carried out at the Linac Coherent Light Source, a national user
facility operated by Stanford University on behalf of the U.S.
Department of Energy, Office of Basic Energy Sciences.
NR 17
TC 20
Z9 20
U1 1
U2 16
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD NOV 8
PY 2010
VL 18
IS 23
BP 23933
EP 23938
DI 10.1364/OE.18.023933
PG 6
WC Optics
SC Optics
GA 676TG
UT WOS:000283940900064
PM 21164739
ER
PT J
AU Meinzer, N
Ruther, M
Linden, S
Soukoulis, CM
Khitrova, G
Hendrickson, J
Olitzky, JD
Gibbs, HM
Wegener, M
AF Meinzer, Nina
Ruther, Matthias
Linden, Stefan
Soukoulis, Costas M.
Khitrova, Galina
Hendrickson, Joshua
Olitzky, Joshua D.
Gibbs, Hyatt M.
Wegener, Martin
TI Arrays of Ag split-ring resonators coupled to InGaAs single-quantum-well
gain
SO OPTICS EXPRESS
LA English
DT Article
ID NEGATIVE-INDEX METAMATERIALS; LASING SPASER
AB We study arrays of silver split-ring resonators operating at around 1.5-mu m wavelength coupled to an MBE-grown single 12.7-nm thin InGaAs quantum well separated only 4.8 nm from the wafer surface. The samples are held at liquid-helium temperature and are pumped by intense femtosecond optical pulses at 0.81-mu m center wavelength in a pump-probe geometry. We observe much larger relative transmittance changes (up to about 8%) on the split-ring-resonator arrays as compared to the bare quantum well (not more than 1-2%). We also observe a much more rapid temporal decay component of the differential transmittance signal of 15 ps for the case of split-ring resonators coupled to the quantum well compared to the case of the bare quantum well, where we find about 0.7 ns. These observations are ascribed to the evanescent coupling of the split-ring resonators to the quantum-well gain. All experimental results are compared with a recently introduced analytical toy model that accounts for this evanescent coupling, leading to excellent overall qualitative agreement. (C) 2010 Optical Society of America
C1 [Meinzer, Nina; Ruther, Matthias; Linden, Stefan; Wegener, Martin] KIT, Inst Nanotechnol, D-76021 Karlsruhe, Germany.
[Meinzer, Nina; Ruther, Matthias; Linden, Stefan; Wegener, Martin] KIT, Inst Angew Phys, D-76128 Karlsruhe, Germany.
[Meinzer, Nina; Ruther, Matthias; Linden, Stefan; Wegener, Martin] KIT, DFG Ctr Funct Nanostruct CFN, D-76128 Karlsruhe, Germany.
[Soukoulis, Costas M.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
[Soukoulis, Costas M.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Soukoulis, Costas M.] Res Ctr Crete, Iraklion 71110, Crete, Greece.
[Soukoulis, Costas M.] Dept Mat Sci & Technol, Iraklion 71110, Crete, Greece.
[Khitrova, Galina; Hendrickson, Joshua; Olitzky, Joshua D.; Gibbs, Hyatt M.] Univ Arizona, Coll Opt Sci, Tucson, AZ 85721 USA.
RP Meinzer, N (reprint author), KIT, Inst Nanotechnol, Postfach 3640, D-76021 Karlsruhe, Germany.
EM Nina.Meinzer@kit.edu
RI Soukoulis, Costas/A-5295-2008; Wegener, Martin/S-5456-2016;
OI Meinzer, Nina/0000-0001-7418-8710
FU Deutsche Forschungsgemeinschaft (DFG); State of Baden-Wurttemberg
through the DFG-Center for Functional Nanostructures (CFN) [A1.5];
European Commission [213390]; Bundesministerium fur Bildung und
Forschung (BMBF); Dept. of Energy (Basic Energy Sciences)
[DE-AC02-07CH11358]
FX We acknowledge support by the Deutsche Forschungsgemeinschaft (DFG) and
the State of Baden-Wurttemberg through the DFG-Center for Functional
Nanostructures (CFN) within subproject A1.5. The project PHOME
acknowledges the financial support of the Future and Emerging
Technologies (FET) programme within the Seventh Framework Programme for
Research of the European Commission, under FET-Open grant number 213390.
The project METAMAT is supported by the Bundesministerium fur Bildung
und Forschung (BMBF). The PhD education of N.M. and M.R. is embedded in
the Karlsruhe School of Optics & Photonics (KSOP). Work at Ames Lab was
supported by Dept. of Energy (Basic Energy Sciences), contract No.
DE-AC02-07CH11358. The Tucson group thanks AFOSR, NSF AMOP, and NSF ERC
CIAN for support. H.M.G. and J.H. thank the Alexander von Humboldt
Foundation for a Renewed Research Stay and Junior Scientist Award,
respectively.
NR 18
TC 71
Z9 71
U1 0
U2 24
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 1094-4087
J9 OPT EXPRESS
JI Opt. Express
PD NOV 8
PY 2010
VL 18
IS 23
BP 24140
EP 24151
DI 10.1364/OE.18.024140
PG 12
WC Optics
SC Optics
GA 676TG
UT WOS:000283940900085
PM 21164760
ER
PT J
AU Gordon, JC
Kubas, GJ
AF Gordon, John C.
Kubas, Gregory J.
TI Perspectives on How Nature Employs the Principles of Organometallic
Chemistry in Dihydrogen Activation in Hydrogenases
SO ORGANOMETALLICS
LA English
DT Review
ID FE-ONLY HYDROGENASE; TRANSITION-METAL-COMPLEXES; CARBON-MONOXIDE
BINDING; STRONG-FIELD LIGAND; H-OX STATE; HETEROLYTIC H-2 ACTIVATION;
NICKEL-IRON HYDROGENASE; ACTIVE-SITE MODELS; NIFE-HYDROGENASE;
CRYSTAL-STRUCTURE
AB Relatively recent developments in metalloenzyme and organometallic chemistry have targeted a growing link between these outwardly incongruous fields, giving birth to a merger now popularly termed "bio-organometallic" chemistry. The astonishing discovery of CO and CN ligands bound to dinuclear iron sites in billion-year-old hydrogenase enzymes has led to a new paradigm and triggered an explosion of research on bioinspired chemistry. The article will focus on the impressive array of organometallic chemistry principles that work in concert in the structure and function of H(2)ases. Molecular H(2) is at the forefront of bioinspired energy, and its production and storage are critical for renewable energy systems. Biomimetic inorganic chemistry and photochemistry involving water splitting for H(2) production has erupted in the past decade and will also be reflected upon here.
C1 [Gordon, John C.; Kubas, Gregory J.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA.
RP Gordon, JC (reprint author), Los Alamos Natl Lab, Div Chem, POB 1663, Los Alamos, NM 87545 USA.
EM kubas@lanl.gov
FU U.S. Department of Energy, Division of Chemical Sciences; Los Alamos
National Laboratory
FX We thank the U.S. Department of Energy, Division of Chemical Sciences,
and Los Alamos National Laboratory's Laboratory Directed Research and
Development program for funding. We also thank Dan DuBois for helpful
comments.
NR 287
TC 71
Z9 71
U1 2
U2 59
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0276-7333
J9 ORGANOMETALLICS
JI Organometallics
PD NOV 8
PY 2010
VL 29
IS 21
BP 4682
EP 4701
DI 10.1021/om100436c
PG 20
WC Chemistry, Inorganic & Nuclear; Chemistry, Organic
SC Chemistry
GA 672GX
UT WOS:000283572100003
ER
PT J
AU Werkema, EL
Yahia, A
Maron, L
Eisenstein, O
Andersen, RA
AF Werkema, Evan L.
Yahia, Ahmed
Maron, Laurent
Eisenstein, Odile
Andersen, Richard A.
TI Bridging Silyl Groups in sigma-Bond Metathesis and [1,2]-Shifts.
Experimental and Computational Study of the Reaction between Cerium
Metallocenes and MeOSiMe3
SO ORGANOMETALLICS
LA English
DT Article
ID ENERGY-ADJUSTED PSEUDOPOTENTIALS; ANIONIC REARRANGEMENTS; FLUORINE
EXCHANGE; TRANSITION-METALS; VALENCE-BOND; ACTIVATION; HYDROGEN; DFT;
SC; ELEMENTS
AB The reaction of Cp'(2)Cell (Cp' = 1,2,4-(Me3C)(3)C5H2) with MeOSiMe3 gives Cp'2CeOMe and HSiMe3, and the reaction of the metallacycle Cp'[(Me3C)(2)C5H2C(Me)(2)CH2]Ce with MeOSiMe3 yields Cp'2CeOCH2SiMe3, formed from the hypothetical Cp'2CeCH2OSiMe3 by a [1,2]-shift also known as a silyl-Wittig rearrangement. Although both cerium products are alkoxides, they are formed by different pathways. DFT calculations on the reaction of the model metallocene Cp2CeH and MeOSiMe3 show that the lowest energy pathway is H for OMe exchange at Cc that occurs by way of a sigma-bond metathesis transition state as SiMe3 exchanges partners. The formation of Cp2CeOCH2-SiMe3 occurs by way of a low activation barrier [1,2]-shift of the SiMe3 group in Cp2CeCH2OSiMe3. Calculations on a model metallacycle, Cp[C5H4C(Me)(2)CH2]Ce, show that the metallacycle favors CH bond activation over sigma-bond metathesis involving the transfer of the SiMe3 group in good agreement with experiment. The sigma-bond metathesis involving the transfer of SiMe3 and the [1,2]-shift of SiMe3 reactions have in common a pentacoordinate silicon at the transition states. A molecular orbital analysis illustrates the connection between these two Si-O bond cleavage reactions and traces the reason why they occur for a silyl but not for an alkyl group to the difference in energy required to form a pentacoordinate silicon or carbon atom in the transition state. This difference clearly distinguishes a silyl from an alkyl group as shown in the study of "pyrolysis of tetramethylsilane yielding free d-orbitals" by Seyferth and Pudvin (CHEMTECH 1981, 11, 230-233).
C1 [Eisenstein, Odile] Univ Montpellier 2, Inst Charles Gerhardt, CNRS 5253, F-34095 Montpellier, France.
[Werkema, Evan L.; Andersen, Richard A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Chem, Berkeley, CA 94720 USA.
[Werkema, Evan L.; Andersen, Richard A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
[Yahia, Ahmed; Maron, Laurent] Univ Toulouse, LPCNO, INSA, UPS, F-31077 Toulouse, France.
[Yahia, Ahmed; Maron, Laurent] CNRS, LPCNO, F-31077 Toulouse, France.
[Yahia, Ahmed] CEA CNRS UM2, ICSM UM5257, F-30207 Bagnols Sur Ceze, France.
RP Eisenstein, O (reprint author), Univ Montpellier 2, Inst Charles Gerhardt, CNRS 5253, Cc 1501,Pl E Bataillon, F-34095 Montpellier, France.
RI Eisenstein, Odile/I-1704-2016
OI Eisenstein, Odile/0000-0001-5056-0311
FU Office of Science, Office of Basic Energy Sciences (OBES), of the U.S.
Department of Energy (DOE) [DE-AC02-05CH11231]; CNRS; Minister of High
Education and Research; CEA
FX This work was supported by the Director, Office of Science, Office of
Basic Energy Sciences (OBES), of the U.S. Department of Energy (DOE)
under Contract No. DE-AC02-05CH11231. We thank F. J. Hollander and A. C.
DiPasquale at CHEX-RAY, the UC Berkeley X-ray diffraction Facility, for
help with the crystallography. A. V. thanks the Computer Center, CCRT
oldie CEA, the CINES, and the CALMIP for a generous donation of
computation time. L.M. is also a junior member of the Institut
Universitaire de France. L.M. and O.E. thank the CNRS and Minister of
High Education and Research for funding, and A.Y. thanks the CEA for a
Ph.D. fellowship.
NR 47
TC 13
Z9 13
U1 0
U2 20
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0276-7333
J9 ORGANOMETALLICS
JI Organometallics
PD NOV 8
PY 2010
VL 29
IS 21
BP 5103
EP 5110
DI 10.1021/om1003286
PG 8
WC Chemistry, Inorganic & Nuclear; Chemistry, Organic
SC Chemistry
GA 672GX
UT WOS:000283572100054
ER
PT J
AU Wiedner, ES
Yang, JY
Dougherty, WG
Kassel, WS
Bullock, RM
DuBois, MR
DuBois, DL
AF Wiedner, Eric S.
Yang, Jenny Y.
Dougherty, William G.
Kassel, W. Scott
Bullock, R. Morris
DuBois, M. Rakowski
DuBois, Daniel L.
TI Comparison of Cobalt and Nickel Complexes with Sterically Demanding
Cyclic Diphosphine Ligands: Electrocatalytic H-2 Production by
[Co((P2N2Ph)-N-tBu)(CH3CN)(3)](BF4)(2)
SO ORGANOMETALLICS
LA English
DT Article
ID NUCLEAR MAGNETIC RESONANCE; FE-ONLY HYDROGENASE; ACTIVE-SITE; MOLECULAR
CATALYSTS; LOW OVERPOTENTIALS; PROTON RELAYS; OXIDATION; COORDINATION;
EVOLUTION; IRON
AB The cyclic diphosphine ligands (P2N2ph)-N-tBu and (P2N2Bz)-N-tBu have been synthesized and used to prepare new complexes of Co(II) and Ni(II) with the formula [M((P2N2R)-N-tBu)(CH3CNn](BF4)(2) (n = 2,3). The products have been characterized by variable-temperature NM R data, X-ray diffraction studies, and cyclic voltammetry, and properties of the new complexes have been compared with those of previously studied complexes containing (P2N2R)-N-ph ligands. The variation of either phosphorus or nitrogen substituents in these ligands can result in significant differences in the structure, electrochemistry, and reactivity of the metal complexes. [Co((P2N2Ph)-N-tBu)(CH3CN](3)](BF4)(2) is found to be an effective electrocatalyst for the formation of hydrogen using bromoanilinium tetrafluoroborate as the acid, with a turnover frequency of 160 s(-1) an overpotential of 160 mV. These cobalt derivatives are a promising class of catalysts for further study and optimization.
C1 [Wiedner, Eric S.; Yang, Jenny Y.; Bullock, R. Morris; DuBois, M. Rakowski; DuBois, Daniel L.] Pacific NW Natl Lab, Div Chem & Mat Sci, Richland, WA 99352 USA.
[Dougherty, William G.; Kassel, W. Scott] Villanova Univ, Dept Chem, Villanova, PA 19085 USA.
RP DuBois, DL (reprint author), Pacific NW Natl Lab, Div Chem & Mat Sci, POB 999,K2-57, Richland, WA 99352 USA.
RI Bullock, R. Morris/L-6802-2016;
OI Bullock, R. Morris/0000-0001-6306-4851; Wiedner,
Eric/0000-0002-7202-9676
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences
FX We thank the U.S. Department of Energy, Office of Science, Office of
Basic Energy Sciences, Division of Chemical Sciences, Biosciences and
Geosciences, for support of the cobalt chemistry reported here. The
nickel chemistry was supported as part of the Center for Molecular
Eleetrocatalysis, an Energy Frontier Research Center funded by the U.S.
Department of Energy, Office of Science, Office of Basic Energy
Sciences. Pacific Northwest National Laboratory is operated by Battelle
for the U.S. Department of Energy.
NR 58
TC 68
Z9 68
U1 0
U2 37
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0276-7333
EI 1520-6041
J9 ORGANOMETALLICS
JI Organometallics
PD NOV 8
PY 2010
VL 29
IS 21
BP 5390
EP 5401
DI 10.1021/om100395r
PG 12
WC Chemistry, Inorganic & Nuclear; Chemistry, Organic
SC Chemistry
GA 672GX
UT WOS:000283572100089
ER
PT J
AU Bazhirov, T
Noffsinger, J
Cohen, ML
AF Bazhirov, Timur
Noffsinger, Jesse
Cohen, Marvin L.
TI Superconductivity and electron-phonon coupling in lithium at high
pressures
SO PHYSICAL REVIEW B
LA English
DT Article
ID PSEUDOPOTENTIAL MU-ASTERISK; TRANSITION-TEMPERATURE; WANNIER FUNCTIONS;
DENSE LITHIUM; PHASE; ENERGY; STATE; GPA
AB Using a first-principles pseudopotential approach we study the origin of superconductivity in lithium under pressure. A recently developed Wannier interpolation based technique that allows for ultradense sampling of electron-phonon parameters throughout the Brillouin zone was employed. The electron-phonon coupling strength as a function of pressure was calculated, precisely resolving many of the fine features of its distribution. The contributions to coupling arising from the Fermi surface topology, phonon dispersions, and electron-phonon matrix elements were separately analyzed. It is found that of the constituent components, the electron-phonon matrix elements are the most sensitive to pressure changes, and a particular phonon is responsible for high values of coupling. Additionally, the distribution of matrix elements over the Fermi surface is seen to be non-uniform and possesses a two-peak structure. Analysis of the Eliashberg spectral function alpha F-2(omega) shows a considerable increase in spectral weight in the low-frequency region with the application of pressure. We estimate the superconducting transition temperature and find that the obtained values are in good accord with experiment.
C1 [Bazhirov, Timur] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Bazhirov, T (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
FU National Science Foundation [DMR07-05941]; Office of Science, Office of
Basic Energy Sciences, Division of Materials Sciences and Engineering
Division, U.S. Department of Energy [DE-AC02-05CH11231]
FX This work was supported by National Science Foundation under Grant No.
DMR07-05941 and by the Director, Office of Science, Office of Basic
Energy Sciences, Division of Materials Sciences and Engineering
Division, U.S. Department of Energy under Contract No.
DE-AC02-05CH11231. Computational resources have been provided by the
Lawrence Berkeley National Laboratory. Calculations were performed using
the QUANTUM-ESPRESSO (Ref. 37), the WAN-NIER90 (Ref. 38), and the EPW
packages (Ref. 39). T. B. thanks Jeffrey Neaton and James Schilling for
useful discussions.
NR 38
TC 13
Z9 13
U1 0
U2 5
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 8
PY 2010
VL 82
IS 18
AR 184509
DI 10.1103/PhysRevB.82.184509
PG 6
WC Physics, Condensed Matter
SC Physics
GA 676PB
UT WOS:000283923400003
ER
PT J
AU Boyd, RN
Brune, CR
Fuller, GM
Smith, CJ
AF Boyd, Richard N.
Brune, Carl R.
Fuller, George M.
Smith, Christel J.
TI New nuclear physics for big bang nucleosynthesis
SO PHYSICAL REVIEW D
LA English
DT Article
ID PROBE WMAP OBSERVATIONS; PRIMORDIAL NUCLEOSYNTHESIS; CROSS-SECTIONS;
PRECISION COSMOLOGY; LI-6 PRODUCTION; REACTION-RATES; HALO-STARS;
ABUNDANCE; DEUTERIUM; HYDROGEN
AB We discuss nuclear reactions which could play a role in big bang nucleosynthesis. Most of these reactions involve lithium and beryllium isotopes and the rates for some of these have not previously been included in BBN calculations. Few of these reactions are well studied in the laboratory. We also discuss novel effects in these reactions, including thermal population of nuclear target states, resonant enhancement, and nonthermal neutron reaction products. We perform sensitivity studies which show that even given considerable nuclear physics uncertainties, most of these nuclear reactions have minimal leverage on the standard BBN abundance yields of Li-6 and Li-7. Although a few have the potential to alter the yields significantly, we argue that this is unlikely.
C1 [Boyd, Richard N.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Brune, Carl R.] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA.
[Fuller, George M.] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
[Smith, Christel J.] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA.
RP Boyd, RN (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
FU Lawrence Livermore National Security, LLC, (LLNS) [DE-AC52-07NA27344];
DOE [DE-FG02-88ER40387, DE-FG52-09NA29455]; LLNL LDRD [ER-066]; NSF at
UCSD [PHY-06-53626]; ASU
FX The authors acknowledge early contributions to this project by T. Luu
and insightful discussions with Wick Haxton and Janilee Benitez. This
work was performed under the auspices of the Lawrence Livermore National
Security, LLC, (LLNS) under Contract No. DE-AC52-07NA27344, and DOE
Grants No. DE-FG02-88ER40387 and No. DE-FG52-09NA29455. C. R. B.
acknowledges support from LLNL LDRD Grant No. ER-066. G. M. F.
acknowledges support from NSF Grant No. PHY-06-53626 at UCSD and C. J.
S. would like to thank ASU for support. This paper is number
LLNL-JRNL-446832.
NR 67
TC 31
Z9 31
U1 1
U2 5
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 8
PY 2010
VL 82
IS 10
AR 105005
DI 10.1103/PhysRevD.82.105005
PG 12
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 676PR
UT WOS:000283925300010
ER
PT J
AU Algora, A
Jordan, D
Tain, JL
Rubio, B
Agramunt, J
Perez-Cerdan, AB
Molina, F
Caballero, L
Nacher, E
Krasznahorkay, A
Hunyadi, MD
Gulyas, J
Vitez, A
Csatlos, M
Csige, L
Aysto, JA
Penttila, H
Moore, ID
Eronen, T
Jokinen, A
Nieminen, A
Hakala, J
Karvonen, P
Kankainen, A
Saastamoinen, A
Rissanen, J
Kessler, T
Weber, C
Ronkainen, J
Rahaman, S
Elomaa, V
Rinta-Antila, S
Hager, U
Sonoda, T
Burkard, K
Huller, W
Batist, L
Gelletly, W
Nichols, AL
Yoshida, T
Sonzogni, AA
Perajarvi, K
AF Algora, A.
Jordan, D.
Tain, J. L.
Rubio, B.
Agramunt, J.
Perez-Cerdan, A. B.
Molina, F.
Caballero, L.
Nacher, E.
Krasznahorkay, A.
Hunyadi, M. D.
Gulyas, J.
Vitez, A.
Csatlos, M.
Csige, L.
Aysto, J. A.
Penttila, H.
Moore, I. D.
Eronen, T.
Jokinen, A.
Nieminen, A.
Hakala, J.
Karvonen, P.
Kankainen, A.
Saastamoinen, A.
Rissanen, J.
Kessler, T.
Weber, C.
Ronkainen, J.
Rahaman, S.
Elomaa, V.
Rinta-Antila, S.
Hager, U.
Sonoda, T.
Burkard, K.
Hueller, W.
Batist, L.
Gelletly, W.
Nichols, A. L.
Yoshida, T.
Sonzogni, A. A.
Perajarvi, K.
TI Reactor Decay Heat in Pu-239: Solving the gamma Discrepancy in the
4-3000-s Cooling Period
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID TOTAL ABSORPTION-SPECTRA; BETA-DECAY
AB The beta feeding probability of Tc-102,Tc- 104,Tc- 105,Tc- 106,Tc- 107, Mo-105, and Nb-101 nuclei, which are important contributors to the decay heat in nuclear reactors, has been measured using the total absorption technique. We have coupled for the first time a total absorption spectrometer to a Penning trap in order to obtain sources of very high isobaric purity. Our results solve a significant part of a long-standing discrepancy in the gamma component of the decay heat for Pu-239 in the 4-3000 s range.
C1 [Algora, A.; Jordan, D.; Tain, J. L.; Rubio, B.; Agramunt, J.; Perez-Cerdan, A. B.; Molina, F.; Caballero, L.; Nacher, E.] Univ Valencia, IFIC, CSIC, Valencia, Spain.
[Algora, A.; Krasznahorkay, A.; Hunyadi, M. D.; Gulyas, J.; Vitez, A.; Csatlos, M.; Csige, L.] Inst Nucl Res, H-4001 Debrecen, Hungary.
[Aysto, J. A.; Penttila, H.; Moore, I. D.; Eronen, T.; Jokinen, A.; Nieminen, A.; Hakala, J.; Karvonen, P.; Kankainen, A.; Saastamoinen, A.; Rissanen, J.; Kessler, T.; Weber, C.; Ronkainen, J.; Rahaman, S.; Elomaa, V.; Rinta-Antila, S.; Hager, U.; Sonoda, T.] Univ Jyvaskyla, Jyvaskyla, Finland.
[Burkard, K.; Hueller, W.] GSI Darmstadt, D-6100 Darmstadt, Germany.
[Batist, L.] PNPI, Gatchina, Russia.
[Gelletly, W.; Nichols, A. L.] Univ Surrey, Guildford GU2 5XH, Surrey, England.
[Yoshida, T.] Tokyo City Univ, Setagaya Ku, Tokyo, Japan.
[Sonzogni, A. A.] Brookhaven Natl Lab, NNDC, Upton, NY 11973 USA.
[Perajarvi, K.] STUK, Helsinki, Finland.
RP Algora, A (reprint author), Univ Valencia, IFIC, CSIC, Valencia, Spain.
EM algora@ific.uv.es
RI Penttila, Heikki/A-4420-2013; Hager, Ulrike/O-1738-2016; Molina,
Francisco/D-5319-2014; Jokinen, Ari/C-2477-2017; Moore,
Iain/D-7255-2014; Tain, Jose L./K-2492-2014; Kankainen, Anu/K-3448-2014;
Nacher, Enrique/G-2257-2010; Rubio, Berta/M-1060-2014; Algora,
Alejandro/E-2960-2015; Caballero, Luis/M-1304-2015
OI Molina, Francisco/0000-0002-9459-1336; Jokinen, Ari/0000-0002-0451-125X;
Moore, Iain/0000-0003-0934-8727; Kankainen, Anu/0000-0003-1082-7602;
Rubio, Berta/0000-0002-9149-4151; Algora, Alejandro/0000-0002-5199-1794;
Caballero, Luis/0000-0002-1635-5282
FU Spanish FPA [2005-03993, FPA2008-06419-C02-01]; Hungarian OTKA [K72566];
EC [MERG-CT-2004-506849]; Finnish Center of Excellence Programme; EU
[506065]; Hungarian-Spanish collaboration program
FX This work was supported by the following projects: Spanish FPA
2005-03993 and FPA2008-06419-C02-01; Hungarian OTKA K72566; the EC
Contract No. MERG-CT-2004-506849; the Finnish Center of Excellence
Programme 2006-2011, the EU 6th Framework Programme (Contract No. 506065
(EURONS), and the Hungarian-Spanish collaboration program.
NR 21
TC 52
Z9 52
U1 4
U2 24
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 8
PY 2010
VL 105
IS 20
AR 202501
DI 10.1103/PhysRevLett.105.202501
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 676QG
UT WOS:000283927700004
PM 21231223
ER
PT J
AU Herng, TS
Qi, DC
Berlijn, T
Yi, JB
Yang, KS
Dai, Y
Feng, YP
Santoso, I
Sanchez-Hanke, C
Gao, XY
Wee, ATS
Ku, W
Ding, J
Rusydi, A
AF Herng, T. S.
Qi, D. -C.
Berlijn, T.
Yi, J. B.
Yang, K. S.
Dai, Y.
Feng, Y. P.
Santoso, I.
Sanchez-Hanke, C.
Gao, X. Y.
Wee, Andrew T. S.
Ku, W.
Ding, J.
Rusydi, A.
TI Room-Temperature Ferromagnetism of Cu-Doped ZnO Films Probed by Soft
X-Ray Magnetic Circular Dichroism
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID SEMICONDUCTORS; SPECTRA; ORIGIN
AB We report direct evidence of room-temperature ferromagnetic ordering in O-deficient ZnO:Cu films by using soft x-ray magnetic circular dichroism and x-ray absorption. Our measurements have revealed unambiguously two distinct features of Cu atoms associated with (i) magnetically ordered Cu ions present only in the oxygen-deficient samples and (ii) magnetically disordered regular Cu2+ ions present in all the samples. We find that a sufficient amount of both oxygen vacancies (V-O) and Cu impurities is essential to the observed ferromagnetism, and a non-negligible portion of Cu impurities is uninvolved in the magnetic order. Based on first-principles calculations, we propose a microscopic "indirect double-exchange" model, in which alignments of localized large moments of Cu in the vicinity of the VO are mediated by the large-sized vacancy orbitals.
C1 [Herng, T. S.; Yi, J. B.; Ding, J.] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117574, Singapore.
[Qi, D. -C.; Santoso, I.; Ding, J.; Rusydi, A.] Natl Univ Singapore, Singapore 117576, Singapore.
[Qi, D. -C.; Yang, K. S.; Feng, Y. P.; Gao, X. Y.; Wee, Andrew T. S.; Rusydi, A.] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore.
[Berlijn, T.; Ku, W.] Brookhaven Natl Lab, CMPMSD, Upton, NY 11973 USA.
[Berlijn, T.; Ku, W.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
[Yang, K. S.; Dai, Y.] Shandong Univ, Sch Phys, Jinan 250100, Peoples R China.
[Santoso, I.] Natl Univ Singapore, Dept Chem, Singapore 117543, Singapore.
[Sanchez-Hanke, C.] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
[Rusydi, A.] Natl Univ Singapore, Singapore Synchrotron Light Source, Singapore 117603, Singapore.
RP Herng, TS (reprint author), Natl Univ Singapore, Dept Mat Sci & Engn, 7 Engn Dr 1, Singapore 117574, Singapore.
EM msedingj@nus.edu.sg; phyandri@nus.edu.sg
RI gao, xingyu/C-4732-2008; Yi, Jiabao/A-1867-2011; Ding, Jun/C-5172-2011;
Qi, Dongchen/A-7052-2008; Wee, Andrew/B-6624-2009; Feng, Yuan Ping
/A-4507-2012; Santoso, Iman/J-2770-2015; Yang, Kesong/A-8568-2012;
Berlijn, Tom/A-3859-2016; Rusydi, Andrivo/I-1849-2016
OI Yi, Jiabao/0000-0001-5299-9897; Qi, Dongchen/0000-0001-8466-0257; Wee,
Andrew/0000-0002-5828-4312; Feng, Yuan Ping /0000-0003-2190-2284;
Santoso, Iman/0000-0003-2695-8965; Yang, Kesong/0000-0002-9691-0636;
Berlijn, Tom/0000-0002-1001-2238;
FU NRF-CRP [NRF-G-CRP 2007-05, NRF2008NRF-CRP002-024]; NUS YIA; NUS Cross
Faculty; FRC; DOE [DE-AC02-98CH10886]; CMSN and NNSFC [10774091]; NUS
[C-380-003-003-001, A*STAR/MOE RP 3979908M, A*STAR 12 105 0038]
FX This work was supported by NRF-CRP Grants No. NRF-G-CRP 2007-05 and No.
NRF2008NRF-CRP002-024, NUS YIA, NUS Cross Faculty, FRC, DOE Grant No.
DE-AC02-98CH10886, and CMSN and NNSFC Grant No. 10774091. This work was
partly performed at SSLS under NUS Core Support Grants No.
C-380-003-003-001, No. A*STAR/MOE RP 3979908M, and No. A*STAR 12 105
0038.
NR 25
TC 128
Z9 129
U1 2
U2 73
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 8
PY 2010
VL 105
IS 20
AR 207201
DI 10.1103/PhysRevLett.105.207201
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 676QG
UT WOS:000283927700008
PM 21231259
ER
PT J
AU Morley, SK
AF Morley, Steven K.
TI Geospace effects of high-speed solar wind streams INTRODUCTION
SO PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING
SCIENCES
LA English
DT Editorial Material
C1 Los Alamos Natl Lab, Los Alamos, NM USA.
RP Morley, SK (reprint author), Los Alamos Natl Lab, Los Alamos, NM USA.
EM smorley@lanl.gov
RI Morley, Steven/A-8321-2008
OI Morley, Steven/0000-0001-8520-0199
NR 10
TC 2
Z9 2
U1 0
U2 1
PU ROYAL SOC
PI LONDON
PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND
SN 1364-5021
J9 P ROY SOC A-MATH PHY
JI Proc. R. Soc. A-Math. Phys. Eng. Sci.
PD NOV 8
PY 2010
VL 466
IS 2123
BP 3275
EP 3277
DI 10.1098/rspa.2010.0371
PG 3
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 654BK
UT WOS:000282142900009
ER
PT J
AU Ilie, R
Liemohn, MW
Kozyra, JU
Borovsky, JE
AF Ilie, R.
Liemohn, M. W.
Kozyra, J. U.
Borovsky, J. E.
TI An investigation of the magnetosphere-ionosphere response to real and
idealized co-rotating interaction region events through global
magnetohydrodynamic simulations
SO PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING
SCIENCES
LA English
DT Article
DE ring current; magnetic storms; co-rotating interaction region;
high-speed stream
ID SOLAR-WIND; INTERPLANETARY; SPACE; ORIGIN; SCHEME; STORMS; AE
AB This study investigates the role of interplanetary magnetic field (IMF) B(z) fluctuations periodicity in the transfer of solar wind mass and energy to the magnetosphere during the co-rotating interaction region/high-speed stream event of 10 November 2003 through global modelling simulations using the space weather modelling framework. To do so, we used both solar wind observations and a variety of idealized inputs as upstream boundary conditions, describing different solar wind configurations for which relative contribution of the peak-to-noise ratio in the input B(z) power spectrum to the periodicity transfer is examined. Fast Fourier transforms of both input to and the response of the magnetosphere reveal that the transfer of IMF B(z) periodicity to the magnetosphere is unaltered by other solar wind parameters, although the size of the peak-to-noise ratio of the input signal is the controlling factor that determines this transfer. The global magnetosphere simulation suggests that a threshold amount of power (peak-to-noise ratio) of approximately 10 in the input signal is needed for the magnetosphere to react to the periodicity in the input B(z), while for the cross-polar cap potential, the threshold amount is significantly smaller.
C1 [Ilie, R.; Liemohn, M. W.; Kozyra, J. U.] Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA.
[Borovsky, J. E.] Los Alamos Natl Lab, Los Alamos, NM USA.
RP Ilie, R (reprint author), Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA.
EM rilie@umich.edu
RI Liemohn, Michael/H-8703-2012; Ilie, Raluca/A-9291-2013
OI Liemohn, Michael/0000-0002-7039-2631;
FU Los Alamos National Security [33673-001-06]; National Science Foundation
[ATM-0802705]; NASA [NAG05GM48G, NIX08AW15G, NIX07AL88G]
FX Funding for this study was provided by Los Alamos National Security
subcontract 33673-001-06, National Science Foundation grant ATM-0802705
and NASA grants NAG05GM48G, NIX08AW15G and NIX07AL88G. The authors would
like to thank the National Space Science Data Center for providing the
ACE data used in this study. Geomagnetic indices were obtained from WDC
in Kyoto, Japan. We would also like to thank the entire SWMF software
development team for the availability of the code.
NR 39
TC 15
Z9 17
U1 0
U2 5
PU ROYAL SOC
PI LONDON
PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND
SN 1364-5021
J9 P ROY SOC A-MATH PHY
JI Proc. R. Soc. A-Math. Phys. Eng. Sci.
PD NOV 8
PY 2010
VL 466
IS 2123
BP 3279
EP 3303
DI 10.1098/rspa.2010.0074
PG 25
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 654BK
UT WOS:000282142900010
ER
PT J
AU Liemohn, MW
Jazowski, M
Kozyra, JU
Ganushkina, N
Thomsen, MF
Borovsky, JE
AF Liemohn, Michael W.
Jazowski, Matt
Kozyra, Janet U.
Ganushkina, Natalia
Thomsen, Michelle F.
Borovsky, Joseph E.
TI CIR versus CME drivers of the ring current during intense magnetic
storms
SO PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING
SCIENCES
LA English
DT Article
DE magnetosphere; magnetic storms; ring current; numerical modelling
ID ACTIVITY HILDCAA EVENTS; HIGH-SPEED STREAMS; GEOSYNCHRONOUS ORBIT;
INTERACTION REGIONS; ELECTRIC-FIELDS; CURRENT SYSTEMS; CURRENT IONS;
ENERGY; DST; GEOEFFECTIVENESS
AB Ninety intense magnetic storms (minimum Dst value of less than -100 nT) from solar cycle 23 (1996-2005) were simulated using the hot electron and ion drift integrator (HEIDI) model. All 90 storm intervals were run with several electric fields and nightside plasma boundary conditions (five run sets). Storms were classified according to their solar wind driver, including corotating interaction regions (CIRs) and interplanetary coronal mass ejections (ICMEs). Data-model comparisons were made against the observed Dst index (specifically, Dst*) and dayside hot-ion measurements from geosynchronous orbiting spacecraft. It is found that the data-model goodness-of-fit values are different for CIR-driven storms relative to ICME-driven storms. The results are also different for the same storm category for different boundary conditions. None of the CIR-driven events was overpredicted by HEIDI, while the dayside comparisons were comparable for the different drivers. The results imply that the outer magnetosphere is responding differently to the two kinds of solar wind drivers, even though the resulting storm size might be similar. That is, for ICME-driven events, magnetospheric currents inside of geosynchronous orbit dominate the Dst perturbation, while for CIR-driven events, currents outside of this boundary have a systematically larger contribution.
C1 [Liemohn, Michael W.; Jazowski, Matt; Kozyra, Janet U.; Ganushkina, Natalia] Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA.
[Ganushkina, Natalia] Finnish Meteorol Inst, FIN-00101 Helsinki, Finland.
[Thomsen, Michelle F.; Borovsky, Joseph E.] Los Alamos Natl Lab, ISR 1, Los Alamos, NM 87545 USA.
RP Liemohn, MW (reprint author), Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA.
EM liemohn@umich.edu
RI Liemohn, Michael/H-8703-2012; Ganushkina, Natalia/K-6314-2013
OI Liemohn, Michael/0000-0002-7039-2631;
FU US government; NASA; NSF
FX The authors would like to thank the US government for sponsoring this
research, in particular NASA and NSF, through various research grants.
The authors would also like to thank the Kyoto World Data Center and
NASA's CDAWeb for providing access to the Dst and solar wind data.
NR 67
TC 16
Z9 16
U1 0
U2 6
PU ROYAL SOC
PI LONDON
PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND
SN 1364-5021
J9 P ROY SOC A-MATH PHY
JI Proc. R. Soc. A-Math. Phys. Eng. Sci.
PD NOV 8
PY 2010
VL 466
IS 2123
BP 3305
EP 3328
DI 10.1098/rspa.2010.0075
PG 24
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 654BK
UT WOS:000282142900011
ER
PT J
AU Morley, SK
Friedel, RHW
Spanswick, EL
Reeves, GD
Steinberg, JT
Koller, J
Cayton, T
Noveroske, E
AF Morley, Steven K.
Friedel, Reiner H. W.
Spanswick, Emma L.
Reeves, Geoffrey D.
Steinberg, John T.
Koller, Josef
Cayton, Thomas
Noveroske, Evan
TI Dropouts of the outer electron radiation belt in response to solar wind
stream interfaces: global positioning system observations
SO PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING
SCIENCES
LA English
DT Article
DE radiation belt; relativistic electrons; global positioning system; solar
wind
ID ION-CYCLOTRON WAVES; PITCH-ANGLE SCATTERING; RELATIVISTIC ELECTRONS;
GEOMAGNETIC STORMS; MAGNETIC STORMS; ACCELERATION; CHORUS;
MAGNETOSPHERE; PRECIPITATION; LOSSES
AB We present a statistical study of relativistic electron counts in the electron radiation belt across a range of drift shells (L* > 4) combining data from nine combined X-ray dosimeters (CXD) on the global positioning system (GPS) constellation. The response of the electron counts as functions of time, energy and drift shell are examined statistically for 67 solar wind stream interfaces (SIs); two-dimensional superposed epoch analysis is performed with the CXD data. For these epochs we study the radiation belt dropouts and concurrent variations in key geophysical parameters.
At higher L* we observe a tendency for a gradual drop in the electron counts over the day preceding the SI, consistent with outward diffusion and magnetopause shadowing. At all L*, dropouts occur with a median time scale of similar or equal to 7 h and median counts fall by 0.4-1.8 orders of magnitude. The central tendencies of radiation belt dropout and recovery depend on both L* and energy. For similar or equal to 70 per cent of epochs Sym-H more than -30 nT, yet only three of 67 SIs did not have an associated dropout in the electron data. Statistical maps of electron precipitation suggest that chorus-driven relativistic electron microbursts might be major contributors to radiation belt losses under high-speed stream driving.
C1 [Morley, Steven K.; Friedel, Reiner H. W.; Spanswick, Emma L.; Reeves, Geoffrey D.; Steinberg, John T.; Koller, Josef; Cayton, Thomas; Noveroske, Evan] Los Alamos Natl Lab, Los Alamos, NM USA.
[Spanswick, Emma L.] Univ Calgary, Dept Phys & Astron, Calgary, AB T2N 1N4, Canada.
RP Morley, SK (reprint author), Los Alamos Natl Lab, Los Alamos, NM USA.
EM smorley@lanl.gov
RI Morley, Steven/A-8321-2008; Friedel, Reiner/D-1410-2012; Koller,
Josef/C-5591-2009; Reeves, Geoffrey/E-8101-2011
OI Morley, Steven/0000-0001-8520-0199; Friedel, Reiner/0000-0002-5228-0281;
Koller, Josef/0000-0002-6770-4980; Reeves, Geoffrey/0000-0002-7985-8098
FU US Department of Energy
FX This work was performed under the auspices of the US Department of
Energy. The authors thank Sodankyla Geophysical Observatory for the
provision of SGO riometer data and the CGSM for providing riometer data.
We also thank Joe King and Natalia Papitashvili at GSFC/SPDF for the
provision of the OMNI solar wind and geophysical data. SKM also wishes
to thank Joe Borovsky (LANL), Mike Henderson (LANL) and Mick Denton
(Lancaster) for helpful discussions.
NR 59
TC 43
Z9 43
U1 0
U2 7
PU ROYAL SOC
PI LONDON
PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND
SN 1364-5021
EI 1471-2946
J9 P ROY SOC A-MATH PHY
JI Proc. R. Soc. A-Math. Phys. Eng. Sci.
PD NOV 8
PY 2010
VL 466
IS 2123
BP 3329
EP 3350
DI 10.1098/rspa.2010.0078
PG 22
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 654BK
UT WOS:000282142900012
ER
PT J
AU MacDonald, EA
Blum, LW
Gary, SP
Thomsen, MF
Denton, MH
AF MacDonald, Elizabeth A.
Blum, Lauren W.
Gary, S. Peter
Thomsen, Michelle F.
Denton, Michael H.
TI High-speed stream driven inferences of global wave distributions at
geosynchronous orbit: relevance to radiation-belt dynamics
SO PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING
SCIENCES
LA English
DT Article
DE magnetosphere; radiation belts; high-speed streams; wave-particle
interactions
ID SUPERPOSED EPOCH ANALYSIS; ELECTRON ACCELERATION; MAGNETOSPHERE; PLASMA;
INSTABILITY; STORMS; CHORUS; ENERGIES
AB Three superposed epoch analyses of plasma data from geosynchronous orbit are compared to infer relative distributions of electromagnetic ion cyclotron (EMIC)- and whistler-mode wave instabilities. Both local-time and storm-time behaviours are studied with respect to dynamics of relativistic electrons. Using LANL-GEO particle data and a quasi-linear approximation for the wave growth allows us to estimate the instability of the two wave modes. This simple technique can allow powerful insights into wave-particle interactions at geosynchronous orbit. Whistler-wave activity peaks on the dayside during the early recovery phase and can continue to be above normal levels for several days. The main phase of all storms exhibits the most EMIC-wave activity, whereas in the recovery phase of the most radiation-belt-effective storms, a significantly suppressed level of EMIC activity is inferred. These key results indicate new dynamics relating to plasma delivery, source and response, but support generally accepted views of whistlers as a source process and EMIC-mode waves as a major loss contributor at geosynchronous orbit.
C1 [MacDonald, Elizabeth A.; Gary, S. Peter; Thomsen, Michelle F.] Los Alamos Natl Lab, ISR 1, Los Alamos, NM 87544 USA.
[Blum, Lauren W.] Boston Univ, Dept Astron, Boston, MA 02215 USA.
[Denton, Michael H.] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England.
RP MacDonald, EA (reprint author), Los Alamos Natl Lab, ISR 1, POB 1663,MS D466, Los Alamos, NM 87544 USA.
EM macdonald@lanl.gov
OI Blum, Lauren/0000-0002-4797-5476; Denton, Michael/0000-0002-1748-3710
NR 42
TC 16
Z9 16
U1 0
U2 3
PU ROYAL SOC
PI LONDON
PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND
SN 1364-5021
EI 1471-2946
J9 P ROY SOC A-MATH PHY
JI Proc. R. Soc. A-Math. Phys. Eng. Sci.
PD NOV 8
PY 2010
VL 466
IS 2123
BP 3351
EP 3362
DI 10.1098/rspa.2010.0076
PG 12
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 654BK
UT WOS:000282142900013
ER
PT J
AU Elenius, M
Oppelstrup, T
Dzugutov, M
AF Elenius, Mans
Oppelstrup, Tomas
Dzugutov, Mikhail
TI Evidence for a simple monatomic ideal glass former: The thermodynamic
glass transition from a stable liquid phase
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID SUPERCOOLED LIQUIDS; CRYSTAL NUCLEATION; TEMPERATURE; POTENTIALS;
INSIGHTS; SYSTEMS; WATER; ORDER
AB Under cooling, a liquid can undergo a transition to the glassy state either as a result of a continuous slowing down or by a first-order polyamorphous phase transition. The second scenario has so far always been observed in a metastable liquid domain below the melting point where crystalline nucleation interfered with the glass formation. We report the first observation of the liquid-glass transition by a first-order polyamorphous phase transition from the equilibrium stable liquid phase. The observation was made in a molecular dynamics simulation of a one-component system with a model metallic pair potential. In this way, the model, demonstrating the thermodynamic glass transition from a stable liquid phase, may be regarded as a candidate for a simple monatomic ideal glass former. This observation is of conceptual importance in the context of continuing attempts to resolve the long-standing Kauzmann paradox. The possibility of a thermodynamic glass transition from an equilibrium melt in a metallic system also indicates a new strategy for the development of bulk metallic glass-forming alloys. (C) 2010 American Institute of Physics. [doi:10.1063/1.3493456]
C1 [Elenius, Mans; Oppelstrup, Tomas] Royal Inst Technol, Dept Numer Anal, S-10044 Stockholm, Sweden.
[Oppelstrup, Tomas] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Dzugutov, Mikhail] Royal Inst Technol, Dept Mat Sci & Engn, S-10044 Stockholm, Sweden.
RP Oppelstrup, T (reprint author), Royal Inst Technol, Dept Numer Anal, S-10044 Stockholm, Sweden.
EM tomaso@nada.kth.se
NR 39
TC 9
Z9 9
U1 1
U2 18
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD NOV 7
PY 2010
VL 133
IS 17
AR 174502
DI 10.1063/1.3493456
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 676RV
UT WOS:000283936200048
PM 21054046
ER
PT J
AU Babikov, D
Kendrick, BK
AF Babikov, Dmitri
Kendrick, Brian K.
TI The infrared spectrum of cyclic-N-3: Theoretical prediction
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID POTENTIAL-ENERGY SURFACE; GEOMETRIC PHASE; CONICAL INTERSECTION;
CHLORINE AZIDE; PHOTOLYTIC PRODUCTION; GROUND-STATE; SCATTERING;
DISSOCIATION; DYNAMICS
AB We have carried out the first calculations of the infrared absorption spectrum of cyclic-N-3. Accurate vibrational energies and wave functions computed with incorporation of the geometric phase effect (via gauge theory) and using an ab initio potential energy surface were employed in this work. A sophisticated fully dimensional dipole moment function was constructed using accurate ab initio calculations and a three-dimensional-spline interpolation. Transformation of the dipole moment vector function from the reference frame associated with instantaneous principal axes of inertia to the laboratory-fixed reference frame was carried out using hyperspherical coordinates. We found that the permanent dipole moment of cyclic-N-3 in the ground vibrational state is relatively small (170 mD). The excited vibrational states show permanent dipole moments in the 10-25 mD range. The most intense part of the infrared absorption spectrum is observed in the deep infrared part of spectrum, 75-275 cm(-1), where five lines exhibit absolute absorption intensities in the range between 0.5 and 1.2 km/mol. These transitions correspond to excitation of the pseudorotational progression of states. Several unique spectroscopic features discussed in the paper should help to identify cyclic-N-3 in the laboratory. (C) 2010 American Institute of Physics. [doi:10.1063/1.3495952]
C1 [Babikov, Dmitri] Marquette Univ, Dept Chem, Milwaukee, WI 53201 USA.
[Kendrick, Brian K.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Babikov, D (reprint author), Marquette Univ, Dept Chem, POB 1881, Milwaukee, WI 53201 USA.
EM dmitri.babikov@mu.edu
FU Air Force Office of Scientific Research [FA9550-09-1-0604]; U.S.
Department of Energy at Los Alamos National Laboratory; U.S. Department
of Energy [DE-AC52-06NA25396]; Office of Science of the U.S. Department
of Energy [DE-AC02-05CH11231]
FX This work was supported by the Air Force Office of Scientific Research
(Grant No. FA9550-09-1-0604). Scott Reid at Marquette University is
acknowledged for many fruitful discussions. Peng Zhang and Keiji
Morokuma at Emory University are acknowledged for their contribution to
calculations of the dipole moment function. Part of this work was done
under the auspices of the U.S. Department of Energy at Los Alamos
National Laboratory. Los Alamos National Laboratory is operated by Los
Alamos National Security, LLC, for the National Nuclear Security
Administration of the U.S. Department of Energy under Contract No.
DE-AC52-06NA25396. This research used resources of the National Energy
Scientific Computing Center, which is supported by the Office of Science
of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
NR 36
TC 11
Z9 11
U1 3
U2 7
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD NOV 7
PY 2010
VL 133
IS 17
AR 174310
DI 10.1063/1.3495952
PG 9
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 676RV
UT WOS:000283936200037
PM 21054035
ER
PT J
AU Matthiesen, J
Smith, RS
Kay, BD
AF Matthiesen, Jesper
Smith, R. Scott
Kay, Bruce D.
TI Measuring diffusivity in supercooled liquid nanoscale films using inert
gas permeation. II. Diffusion of Ar, Kr, Xe, and CH4 through Methanol
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID AMORPHOUS SOLID WATER; GLASS-TRANSITION; MOLECULAR-BEAMS; DEPOSITION;
DYNAMICS; SURFACES
AB We present an experimental technique to measure the diffusivity of supercooled liquids at temperatures near their T-g. The approach uses the permeation of inert gases through supercooled liquid overlayers as a measure of the diffusivity of the supercooled liquid itself. The desorption spectra of the probe gas are used to extract the low temperature supercooled liquid diffusivities. In the preceding companion paper, we derived equations using ideal model simulations from which the diffusivity could be extracted using the desorption peak times for isothermal or peak temperatures for temperature programmed desorption experiments. Here, we discuss the experimental conditions for which these equations are valid and demonstrate their utility using amorphous methanol with Ar, Kr, Xe, and CH4 as probe gases. The approach offers a new method by which the diffusivities of supercooled liquids can be measured in the experimentally challenging temperature regime near the glass transition temperature. (C) 2010 American Institute of Physics. [doi:10.1063/1.3497648]
C1 [Matthiesen, Jesper; Smith, R. Scott; Kay, Bruce D.] Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99352 USA.
RP Smith, RS (reprint author), Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, POB 999,Mail Stop K8-88, Richland, WA 99352 USA.
EM zorro@pnl.gov; Bruce.Kay@pnl.gov
RI Matthiesen, Jesper/N-2477-2014; Smith, Scott/G-2310-2015
OI Matthiesen, Jesper/0000-0003-1040-1919; Smith, Scott/0000-0002-7145-1963
FU U.S. Department of Energy Office of Basic Energy Sciences, Division of
Chemical Sciences, Geosciences, and Biosciences; DOE's Office of
Biological and Environmental Research [DE-AC05-76RL01830]
FX This work was supported by the U.S. Department of Energy Office of Basic
Energy Sciences, Division of Chemical Sciences, Geosciences, and
Biosciences. The research was performed using EMSL, a national
scientific user facility sponsored by DOE's Office of Biological and
Environmental Research and located at Pacific Northwest National
Laboratory, which is operated for DOE by Battelle under Contract No.
DE-AC05-76RL01830.
NR 26
TC 12
Z9 12
U1 1
U2 17
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD NOV 7
PY 2010
VL 133
IS 17
AR 174505
DI 10.1063/1.3497648
PG 11
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 676RV
UT WOS:000283936200051
PM 21054049
ER
PT J
AU Smith, RS
Matthiesen, J
Kay, BD
AF Smith, R. Scott
Matthiesen, Jesper
Kay, Bruce D.
TI Measuring diffusivity in supercooled liquid nanoscale films using inert
gas permeation. I. Kinetic model and scaling methods
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID AMORPHOUS SOLID WATER; GLASSY WATER; CARBON
AB We describe in detail a diffusion model used to simulate inert gas transport through supercooled liquid overlayers. In recent work, the transport of the inert gas has been shown to be an effective probe of the diffusivity of supercooled liquid methanol in the experimentally challenging regime near the glass transition temperature. The model simulations accurately and quantitatively describe the inert gas permeation desorption spectra. The simulation results are used to validate universal scaling relationships between the diffusivity, overlayer thickness, and the temperature ramp rate for isothermal and temperature programmed desorption. From these scaling relationships we derive simple equations from which the diffusivity can be obtained using the peak desorption time or temperature for an isothermal or set of TPD experiments, respectively, without numerical simulation. The results presented here demonstrate that the permeation of gases through amorphous overlayers has the potential to be a powerful technique to obtain diffusivity data in deeply supercooled liquids. (C) 2010 American Institute of Physics. [doi:10.1063/1.3497654]
C1 [Smith, R. Scott; Matthiesen, Jesper; Kay, Bruce D.] Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99352 USA.
RP Smith, RS (reprint author), Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, POB 999,Mail Stop K8-88, Richland, WA 99352 USA.
EM zorro@pnl.gov; Bruce.Kay@pnl.gov
RI Matthiesen, Jesper/N-2477-2014; Smith, Scott/G-2310-2015
OI Matthiesen, Jesper/0000-0003-1040-1919; Smith, Scott/0000-0002-7145-1963
FU U.S. Department of Energy Office of Basic Energy Sciences, Division of
Chemical Sciences, Geosciences, and Biosciences; DOE Office of
Biological and Environmental Research [DE-AC05-76RL01830]
FX This work was supported by the U.S. Department of Energy Office of Basic
Energy Sciences, Division of Chemical Sciences, Geosciences, and
Biosciences. The research was performed using EMSL, a national
scientific user facility sponsored by the DOE Office of Biological and
Environmental Research and located at Pacific Northwest National
Laboratory, which is operated for DOE by Battelle under Contract No.
DE-AC05-76RL01830.
NR 25
TC 12
Z9 12
U1 0
U2 13
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD NOV 7
PY 2010
VL 133
IS 17
AR 174504
DI 10.1063/1.3497654
PG 11
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 676RV
UT WOS:000283936200050
PM 21054048
ER
PT J
AU Ching, J
Riemer, N
Dunn, M
Miller, M
AF Ching, J.
Riemer, N.
Dunn, M.
Miller, M.
TI In-cloud turbulence structure of marine stratocumulus
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID BOUNDARY-LAYER; RADIATIVE-TRANSFER; CONTINENTAL STRATOCUMULUS; AIRCRAFT
OBSERVATIONS; RADAR; MODEL; BUDGETS; ASTEX
AB This study quantifies the level of turbulence inside the marine stratocumulus cloud deck over Pt. Reyes, CA, during the Marine Stratus Radiation, Aerosol, and Drizzle Experiment (MASRAD) in July 2005, and identifies the dominant sources of turbulent kinetic energy. We used vertical velocity data from a 3 mm wavelength (94-GHz) vertically pointing Doppler radar in combination with collocated radiosonde data. The results show that the stratocumulus observed at Pt. Reyes behaves differently from that expected on the basis of previous studies due to the modified marine environment that exists there. In particular, we found a decrease of turbulence levels with height within the cloud both during day and during night. The analysis highlights that for the conditions of our study longwave radiative cooling at cloud top was compensated by a number of mechanisms, resulting in the observed profiles. The production of turbulent kinetic energy is dominantly driven by wind shear. Citation: Ching, J., N. Riemer, M. Dunn, and M. Miller (2010), In-cloud turbulence structure of marine stratocumulus, Geophys. Res. Lett., 37, L21808, doi:10.1029/2010GL045033.
C1 [Ching, J.; Riemer, N.] Univ Illinois, Dept Atmospher Sci, Urbana, IL 61801 USA.
[Dunn, M.] Brookhaven Natl Lab, Dept Environm Sci, Upton, NY 11973 USA.
[Miller, M.] Rutgers State Univ, Dept Environm Sci, New Brunswick, NJ 08901 USA.
RP Ching, J (reprint author), Univ Illinois, Dept Atmospher Sci, 105 S Gregory St, Urbana, IL 61801 USA.
EM ching@illinois.edu; nriemer@illinois.edu; mdunn@bnl.gov;
m.miller@envsci.rutgers.edu
FU Office of Biological and Environmental Research of the U.S. Department
of Energy
FX This research was supported by the Office of Biological and
Environmental Research of the U.S. Department of Energy as part of the
Atmospheric Radiation Measurement Program.
NR 20
TC 0
Z9 0
U1 0
U2 3
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD NOV 6
PY 2010
VL 37
AR L21808
DI 10.1029/2010GL045033
PG 5
WC Geosciences, Multidisciplinary
SC Geology
GA 676TV
UT WOS:000283942400003
ER
PT J
AU Ozak, N
Schultz, DR
Cravens, TE
Kharchenko, V
Hui, YW
AF Ozak, N.
Schultz, D. R.
Cravens, T. E.
Kharchenko, V.
Hui, Y. -W.
TI Auroral X-ray emission at Jupiter: Depth effects
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID FULLY STRIPPED IONS; UPPER-ATMOSPHERE; ELECTRON-CAPTURE;
CHARGE-TRANSFER; INTERMEDIATE ENERGIES; MOLECULAR-HYDROGEN; THERMAL
STRUCTURE; ENERGETIC OXYGEN; ATOMIC-HYDROGEN; CROSS-SECTIONS
AB Auroral X-ray emissions from Jupiter with a total power of about 1 GW have been observed by the Einstein Observatory, Roentgen satellite, Chandra X-ray Observatory, and XMM-Newton. Previous theoretical studies have shown that precipitating energetic sulfur and oxygen ions can produce the observed X-rays. This study presents the results of a hybrid Monte Carlo (MC) model for sulfur and oxygen ion precipitation at high latitudes, looks at differences with the continuous slow-down model, and compares the results to synthetic spectra fitted to observations. We concentrate on the effects of altitude on the observed spectrum. The opacity of the atmosphere to the outgoing X-ray photons is found to be important for incident ion energies greater than about 1.2 MeV per nucleon for both sulfur and oxygen. Model spectra are calculated for intensities with and without any opacity effects. These synthetic spectra were compared with the results shown by Hui et al. (2010) which fit Chandra X-ray Observatory observations for the north and south Jovian auroral emissions. Quenching of long-lived excited states of the oxygen ions is found to be important. Opacity considerably diminishes the outgoing X-ray intensity calculated, particularly when the viewing geometry is not favorable.
C1 [Ozak, N.; Cravens, T. E.] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA.
[Schultz, D. R.; Hui, Y. -W.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Kharchenko, V.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
RP Ozak, N (reprint author), Univ Kansas, Dept Phys & Astron, 1082 Malott,1251 Wescoe Hall Dr, Lawrence, KS 66045 USA.
EM nojager@ku.edu
FU NASA at the University of Kansas [NNX07AF47G-Phase II, NNX10AB86G]; NASA
at Oak Ridge National Laboratory [NNH08AF12I]
FX This work has been supported at the University of Kansas by NASA
Planetary Atmospheres Grants NNX07AF47G-Phase II and NNX10AB86G and at
Oak Ridge National Laboratory by NASA Grant NNH08AF12I.
NR 53
TC 11
Z9 11
U1 0
U2 1
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0148-0227
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD NOV 6
PY 2010
VL 115
AR A11306
DI 10.1029/2010JA015635
PG 13
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 676WX
UT WOS:000283950500002
ER
PT J
AU Strait, J
Mokhov, NV
Striganov, SI
AF Strait, J.
Mokhov, N. V.
Striganov, S. I.
TI Towards the optimal energy of the proton driver for a neutrino factory
and muon collider
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
AB Cross section data from the HARP experiment for pion production by protons from a tantalum target have been convoluted with the acceptance of the front-end channel for the proposed neutrino factory or muon collider and integrated over the full phase space measured by HARP, to determine the beam-energy dependence of the muon yield. This permits a determination of the optimal beam energy for the proton driver for these projects. The cross section data are corrected for the beam-energy dependent amplification due to the development of hadronic showers in a thick target. The conclusion is that, for constant beam power, the yield is maximum for a beam energy of about 7 GeV, but it is within 10% of this maximum for 4 < T(beam) < 11 GeV, and within 20% of the maximum for T(beam) as low as 2 GeV. This result is insensitive to which of the two HARP groups' results are used, and to which pion generator is used to compute the thick target effects.
C1 [Strait, J.; Mokhov, N. V.; Striganov, S. I.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Strait, J (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
FU Fermi Research Alliance, LLC [DE-AC02-07CH11359]; U.S. Department of
Energy
FX We would like to thank Roland Garoby for suggesting this analysis to us,
and Igor Boyko, Jaap Panman, Gersende Prior, and Jorg Wotschalk for
useful discussions that helped us understand how to use the HARP data.
This work was supported by Fermi Research Alliance, LLC under Contract
No. DE-AC02-07CH11359 with the U.S. Department of Energy.
NR 17
TC 8
Z9 8
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-4402
J9 PHYS REV SPEC TOP-AC
JI Phys. Rev. Spec. Top.-Accel. Beams
PD NOV 6
PY 2010
VL 13
IS 11
AR 111001
DI 10.1103/PhysRevSTAB.13.111001
PG 7
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 676QK
UT WOS:000283928500001
ER
PT J
AU Schwartz, CP
Fatehi, S
Saykally, RJ
Prendergast, D
AF Schwartz, Craig P.
Fatehi, Shervin
Saykally, Richard J.
Prendergast, David
TI Importance of Electronic Relaxation for Inter-Coulombic Decay in Aqueous
Systems
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID GOLD NANOPARTICLES; WATER
AB Inspired by recent photoelectron spectroscopy experiments on hydroxide solutions, we have examined the conditions necessary for enhanced (and, in the case of solutions, detectable) inter-Coulombic decay (ICD)-Auger emission from an atomic site other than that originally excited. We present general guidelines, based on energetic and spatial overlap of molecular orbitals, for this enhancement of inter-Coulombic decay-based energy transfer in solutions. These guidelines indicate that this decay process should be exhibited by broad classes of biomolecules and suggest a design criterion for targeted radiooncology protocols. Our findings show that photoelectron spectroscopy cannot resolve the current hydroxide coordination controversy.
C1 [Schwartz, Craig P.; Fatehi, Shervin; Saykally, Richard J.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Schwartz, Craig P.; Fatehi, Shervin; Saykally, Richard J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
[Fatehi, Shervin] Univ Calif Berkeley, Kenneth S Pitzer Ctr Theoret Chem, Berkeley, CA 94720 USA.
[Prendergast, David] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA.
RP Schwartz, CP (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM dgprendergast@lbl.gov
OI Fatehi, Shervin/0000-0002-9922-923X
FU Office of Basic Energy Sciences, Office of Science, U.S. Department of
Energy through the LBNL Chemical Sciences Division [DE-AC02-05CH11231];
Molecular Foundry; National Science Foundation
FX This work was supported by the Director, Office of Basic Energy
Sciences, Office of Science, U.S. Department of Energy under Contract
No. DE-AC02-05CH11231 through the LBNL Chemical Sciences Division and
the Molecular Foundry, and by the National Science Foundation.
Computational resources were provided by NERSC, a DOE Advanced
Scientific Computing Research User Facility. We thank Professor Mark
Tuckerman for the solution snapshots and Dr. Keith Lawler for helpful
discussions.
NR 21
TC 15
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U1 1
U2 18
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 5
PY 2010
VL 105
IS 19
AR 198102
DI 10.1103/PhysRevLett.105.198102
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 675RT
UT WOS:000283849300019
PM 21231199
ER
PT J
AU Park, YD
Panepinto, J
Shin, S
Larsen, P
Giles, S
Williamson, PR
AF Park, Yoon-Dong
Panepinto, John
Shin, Soowan
Larsen, Peter
Giles, Steven
Williamson, Peter R.
TI Mating Pheromone in Cryptococcus neoformans Is Regulated by a
Transcriptional/Degradative "Futile" Cycle
SO JOURNAL OF BIOLOGICAL CHEMISTRY
LA English
DT Article
ID FUNGAL PATHOGEN CRYPTOCOCCUS; MESSENGER-RNA; PROTEIN-KINASE;
SACCHAROMYCES-CEREVISIAE; GENE-EXPRESSION; SEXUAL REPRODUCTION;
STRESS-RESPONSE; VIRULENCE; DIFFERENTIATION; HELICASE
AB Sexual reproduction in fungi requires induction of signaling pheromones within environments that are conducive to mating. The fungus Cryptococcus neoformans is currently the fourth greatest cause of infectious death in regions of Africa and undergoes mating in phytonutrient-rich environments to create spores with infectious potential. Here we show that under conditions where sexual development is inhibited, a similar to 17-fold excess of MF alpha pheromone transcript is synthesized and then degraded by a DEAD box protein, Vad1, resulting in low steady state transcript levels. Transfer to mating medium or deletion of the VAD1 gene resulted in high level accumulation of MF alpha transcripts and enhanced mating, acting in concert with the mating-related HOG1 pathway. We then investigated whether the high metabolic cost of this apparently futile transcriptional cycle could be justified by a more rapid induction of mating. Maintenance of Vad1 activity on inductive mating medium by constitutive expression resulted in repressed levels of MF alpha that did not prevent but rather prolonged the time to successful mating from 5-6 h to 15 h (p < 0.0001). In sum, these data suggest that VAD1 negatively regulates the sexual cell cycle via degradation of constitutive high levels of MF alpha transcripts in a synthetic/degradative cycle, providing a mechanism of mRNA induction for time-critical cellular events, such as mating induction.
C1 NIAID, Lab Clin Infect Dis, NIH, Bethesda, MD 20892 USA.
[Panepinto, John] SUNY Buffalo, Dept Microbiol & Immunol, Witebsky Ctr Microbial Pathogenesis & Immunol, Buffalo, NY 14214 USA.
[Shin, Soowan; Williamson, Peter R.] Univ Illinois, Infect Dis Sect, Dept Med, Chicago, IL 60612 USA.
[Larsen, Peter] Argonne Natl Lab, Biosci Div, Lemont, IL 60439 USA.
[Giles, Steven] Univ Wisconsin, Dept Bacteriol, Madison, WI 53701 USA.
RP Williamson, PR (reprint author), 9000 Rockville Pike,Bldg 10,Rm 11N234,MSC 1888, Bethesda, MD 20892 USA.
EM williamsonpr@mail.nih.gov
FU National Institutes of Health [AI45995, AI49371]; National Institutes of
Health, NIAID; American Heart Association [0725736Z]
FX This work was supported, in whole or in part, by National Institutes of
Health Grants AI45995 and AI49371 and by the Intramural Research Program
of the National Institutes of Health, NIAID. This work was also
supported by American Heart Association Grant 0725736Z.
NR 59
TC 8
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U1 0
U2 1
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 0021-9258
J9 J BIOL CHEM
JI J. Biol. Chem.
PD NOV 5
PY 2010
VL 285
IS 45
BP 34746
EP 34756
DI 10.1074/jbc.M110.136812
PG 11
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 673KL
UT WOS:000283659100050
PM 20801870
ER
PT J
AU Curtright, TL
Zachos, CK
AF Curtright, Thomas L.
Zachos, Cosmas K.
TI Chaotic maps, Hamiltonian flows and holographic methods
SO JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
LA English
DT Article
AB Holographic functional methods are introduced as probes of discrete time-stepped maps that lead to chaotic behavior. The methods provide continuous time interpolation between the time steps, thereby revealing the maps to be quasi-Hamiltonian systems underlain by novel potentials that govern the motion of a perceived point particle. Between turning points, the particle is strictly driven by Hamiltonian dynamics, but at each encounter with a turning point the potential changes abruptly, loosely analogous to the switchbacks on a mountain road. A sequence of successively deepening switchback potentials explains, in physical terms, the frequency cascade and trajectory folding that occur on the particular route to chaos revealed by the logistic map.
C1 [Curtright, Thomas L.] Univ Miami, Dept Phys, Coral Gables, FL 33124 USA.
[Zachos, Cosmas K.] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA.
RP Curtright, TL (reprint author), Univ Miami, Dept Phys, Coral Gables, FL 33124 USA.
EM curtright@miami.edu
RI zachos, cosmas/C-4366-2014; Curtright, Thomas/B-6840-2015;
OI zachos, cosmas/0000-0003-4379-3875; Curtright,
Thomas/0000-0001-7031-5604
FU NSF [0855386]; US Department of Energy, Division of High Energy Physics
[DE-AC02-06CH11357]
FX We thank D Callaway for incisive questions and encouragement, D Sinclair
for his emphasis on an appropriate title and an anonymous reviewer for
suggestions to improve our presentation of the material. This work was
supported in part by NSF Award 0855386, and in part by the US Department
of Energy, Division of High Energy Physics, under contract
DE-AC02-06CH11357.
NR 11
TC 7
Z9 7
U1 0
U2 5
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1751-8113
J9 J PHYS A-MATH THEOR
JI J. Phys. A-Math. Theor.
PD NOV 5
PY 2010
VL 43
IS 44
AR 445101
DI 10.1088/1751-8113/43/44/445101
PG 15
WC Physics, Multidisciplinary; Physics, Mathematical
SC Physics
GA 668VS
UT WOS:000283300800007
ER
PT J
AU Peroz, C
Dhuey, S
Volger, M
Wu, Y
Olynick, D
Cabrini, S
AF Peroz, C.
Dhuey, S.
Volger, M.
Wu, Y.
Olynick, D.
Cabrini, S.
TI Step and repeat UV nanoimprint lithography on pre-spin coated resist
film: a promising route for fabricating nanodevices
SO NANOTECHNOLOGY
LA English
DT Article
ID HYDROGEN SILSESQUIOXANE; IMPRINT LITHOGRAPHY
AB A step and repeat UV nanoimprint lithography process on pre-spin coated resist film is demonstrated for patterning a large area with features sizes down to sub-15 nm. The high fidelity between the template and imprinted structures is verified with a difference in their line edge roughness of less than 0.5 nm (3 sigma deviation value). The imprinted pattern's residual layer is well controlled to allow direct pattern transfer from the resist into functional materials with very high resolution. The process is suitable for fabricating numerous nanodevices.
C1 [Peroz, C.] aBeam Technol, Castro Valley, CA 94546 USA.
[Dhuey, S.; Olynick, D.; Cabrini, S.] LBNL, Mol Foundry, Berkeley, CA 94702 USA.
[Volger, M.] MicroResist Technol, D-12555 Berlin, Germany.
[Wu, Y.] Oxford Instruments, Concord, MA 01742 USA.
RP Peroz, C (reprint author), aBeam Technol, 5286 Dunnigan Court, Castro Valley, CA 94546 USA.
EM cp@abeamtech.com
FU Office of Science, Office of Basic Energy Sciences, of the US Department
of Energy [DE-AC02-05CH11231]
FX We would like to thank B Harteneck and E Wood for their technical
support and S Babin for providing myCD software analysis. Work at the
Molecular Foundry was supported by the Office of Science, Office of
Basic Energy Sciences, of the US Department of Energy under contract no.
DE-AC02-05CH11231.
NR 20
TC 26
Z9 26
U1 0
U2 7
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0957-4484
J9 NANOTECHNOLOGY
JI Nanotechnology
PD NOV 5
PY 2010
VL 21
IS 44
AR 445301
DI 10.1088/0957-4484/21/44/445301
PG 5
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA 660XL
UT WOS:000282679800006
PM 20921594
ER
PT J
AU Wang, CH
Christianson, AD
Lawrence, JM
Bauer, ED
Goremychkin, EA
Kolesnikov, AI
Trouw, F
Ronning, F
Thompson, JD
Lumsden, MD
Ni, N
Mun, ED
Jia, S
Canfield, PC
Qiu, Y
Copley, JRD
AF Wang, C. H.
Christianson, A. D.
Lawrence, J. M.
Bauer, E. D.
Goremychkin, E. A.
Kolesnikov, A. I.
Trouw, F.
Ronning, F.
Thompson, J. D.
Lumsden, M. D.
Ni, N.
Mun, E. D.
Jia, S.
Canfield, P. C.
Qiu, Y.
Copley, J. R. D.
TI Neutron scattering and scaling behavior in URu2Zn20 and YbFe2Zn20
SO PHYSICAL REVIEW B
LA English
DT Article
ID INTERMETALLIC COMPOUND; FLUCTUATIONS; EXCITATIONS; URANIUM; UPT3; RH;
IR; CO
AB The dynamic susceptibility chi '' (Delta E), measured by inelastic neutron-scattering measurements, shows a broad peak centered at E-max=15 meV for the cubic actinide compound URu2Zn20 and 7 meV at zone center and at the (1/2, 1/2, 1/2) zone boundary for the rare-earth counterpart compound YbFe2Zn20. For URu2Zn20, the low-temperature susceptibility and magnetic specific-heat coefficient gamma = C-mag/T take the values chi = 0.011 emu/mole and gamma = 190 mJ/mole K-2 at T=2 K. These values are roughly three times smaller, and E-max is three times larger, than recently reported for the related compound UCo2Zn20, so that chi and gamma scale inversely with the characteristic energy for spin fluctuations, T-sf = E-max/k(B). While chi(T) , C-mag(T), and E-max of the 4f compound YbFe2Zn20 are very well described by the Kondo impurity model, we show that the model works poorly for URu2Zn20 and UCo2Zn20, suggesting that the scaling behavior of the actinide compounds arises from spin fluctuations of itinerant 5f electrons.
C1 [Wang, C. H.; Lawrence, J. M.] Univ Calif Irvine, Irvine, CA 92697 USA.
[Wang, C. H.; Bauer, E. D.; Trouw, F.; Ronning, F.; Thompson, J. D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Christianson, A. D.; Kolesnikov, A. I.; Lumsden, M. D.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Goremychkin, E. A.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Ni, N.; Mun, E. D.; Jia, S.; Canfield, P. C.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
[Qiu, Y.; Copley, J. R. D.] NIST, Gaithersburg, MD 20899 USA.
[Qiu, Y.] Univ Maryland, College Pk, MD 20742 USA.
RP Wang, CH (reprint author), Univ Calif Irvine, Irvine, CA 92697 USA.
RI Bauer, Eric/D-7212-2011; Lujan Center, LANL/G-4896-2012; Canfield,
Paul/H-2698-2014; Kolesnikov, Alexander/I-9015-2012; christianson,
andrew/A-3277-2016; Lumsden, Mark/F-5366-2012;
OI Kolesnikov, Alexander/0000-0003-1940-4649; christianson,
andrew/0000-0003-3369-5884; Lumsden, Mark/0000-0002-5472-9660; Ronning,
Filip/0000-0002-2679-7957; Bauer, Eric/0000-0003-0017-1937
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Materials Sciences and Engineering [DE-FG02-03ER46036]; Scientific User
Facilities Division Office of Basic Energy Sciences (BES), DOE; DOE-BES
[DE-AC02-06CH11357, DE-AC02-07CH11358]; National Science Foundation
[DMR-0454672]
FX Research at UC Irvine was supported by the U.S. Department of Energy,
Office of Basic Energy Sciences, Division of Materials Sciences and
Engineering under Award No. DE-FG02-03ER46036. Work at ORNL was
supported by the Scientific User Facilities Division Office of Basic
Energy Sciences (BES), DOE. Work at ANL was supported by DOE-BES under
Contract No. DE-AC02-06CH11357. Work at the Ames Laboratory was
supported by the DOE-BES under Contract No. DE-AC02-07CH11358. Work at
Los Alamos, including work performed at the Los Alamos Neutron Science
Center, was also supported by the DOE-BES. Work at NIST utilized
facilities supported in part by the National Science Foundation under
Agreement No. DMR-0454672.
NR 27
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U1 1
U2 13
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 5
PY 2010
VL 82
IS 18
AR 184407
DI 10.1103/PhysRevB.82.184407
PG 6
WC Physics, Condensed Matter
SC Physics
GA 675OW
UT WOS:000283841000003
ER
PT J
AU Bratt, JD
Edwards, RG
Engelhardt, M
Hagler, P
Lin, HW
Lin, MF
Meyer, HB
Musch, B
Negele, JW
Orginos, K
Pochinsky, AV
Procura, M
Richards, DG
Schroers, W
Syritsyn, SN
AF Bratt, J. D.
Edwards, R. G.
Engelhardt, M.
Haegler, Ph.
Lin, H. W.
Lin, M. F.
Meyer, H. B.
Musch, B.
Negele, J. W.
Orginos, K.
Pochinsky, A. V.
Procura, M.
Richards, D. G.
Schroers, W.
Syritsyn, S. N.
TI Nucleon structure from mixed action calculations using 2+1 flavors of
asqtad sea and domain wall valence fermions
SO PHYSICAL REVIEW D
LA English
DT Article
ID CHIRAL PERTURBATION-THEORY; GENERALIZED PARTON DISTRIBUTIONS;
ELECTROMAGNETIC FORM-FACTORS; LATTICE QCD; HADRON STRUCTURE; SCATTERING;
SPIN; MASS; SIMULATIONS; OBSERVABLES
AB We present high statistics results for the structure of the nucleon from a mixed-action calculation using 2 + 1 flavors of asqtad sea and domain-wall valence fermions. We perform extrapolations of our data based on different chiral effective field theory schemes and compare our results with available information from phenomenology. We discuss vector and axial form factors of the nucleon, moments of generalized parton distributions, including moments of forward parton distributions, and implications for the decomposition of the nucleon spin.
C1 [Bratt, J. D.; Lin, M. F.; Meyer, H. B.; Negele, J. W.; Pochinsky, A. V.; Procura, M.; Syritsyn, S. N.] MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA.
[Edwards, R. G.; Lin, H. W.; Musch, B.; Richards, D. G.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
[Engelhardt, M.] New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA.
[Haegler, Ph.; Musch, B.; Procura, M.] Tech Univ Munich, Dept Phys, D-85748 Garching, Germany.
[Lin, H. W.] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Lin, M. F.] Yale Univ, Dept Phys, Sloane Lab, New Haven, CT 06520 USA.
[Meyer, H. B.] CERN, Dept Phys, CH-1211 Geneva 23, Switzerland.
[Orginos, K.] Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA.
[Schroers, W.] Acad Sinica, Inst Phys, Taipei 115, Taiwan.
RP Bratt, JD (reprint author), MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA.
FU U.S. DOE [DE-AC05-06OR23177, DE-FG03-97ER4014]; DOE Office of Nuclear
Physics [DE-FG02-94ER40818, DE-FG02-04ER41302, DE-FG02-96ER40965,
DE-FG02-05ER25681, DE-AC02-06CH11357]; EU [RII3-CT-2004-506078]; DOE
[DE-AC05-06OR23177]; Southeastern Universities Research Association,
Inc. [DE-AC05-84ER40150]; Emmy-Noether program; DFG; National Science
Council of Taiwan [NSC96-2112-M002-020-MY3, NSC96-2811-M002-026]; NuAS
in Germany; Institute of Physics at Academia Sinica; Jeffress Memorial
Trust [J-813]; Alexander von Humboldt-foundation
FX The authors wish to thank George T. Fleming, Dru B. Renner, and Andre P.
Walker-Loud for their contributions to this project and to the LHPC
Collaboration for valuable discussions of the physics and presentation
of this work. This work was supported in part by U.S. DOE Contracts No.
DE-AC05-06OR23177 and No. DE-FG03-97ER4014, by the DOE Office of Nuclear
Physics under Grants No. DE-FG02-94ER40818, No. DE-FG02-04ER41302, No.
DE-FG02-96ER40965, No. DE-FG02-05ER25681, and No. DE-AC02-06CH11357, and
the EU (I3HP) under Contract No. RII3-CT-2004-506078. This work was
supported by DOE Contract No. DE-AC05-06OR23177, under which Jefferson
Science Associates, LLC operates Jefferson Laboratory, and by DOE
Contract No. DE-AC05-84ER40150 of the Southeastern Universities Research
Association, Inc. Ph. H. and B. M. acknowledge support by the
Emmy-Noether program and the cluster of excellence "Origin and Structure
of the Universe'' of the DFG. W.S. acknowledges support by the National
Science Council of Taiwan under Grants No. NSC96-2112-M002-020-MY3 and
No. NSC96-2811-M002-026 and by NuAS in Germany, and wishes to thank the
Institute of Physics at Academia Sinica for their kind hospitality and
support. W.S. particularly thanks Jiunn-Wei Chen at National Taiwan
University and Hai-Yang Cheng and Hsiang-nan Li at Academia Sinica for
their hospitality and for valuable physics discussions and suggestions.
K. O. acknowledges support from the Jeffress Memorial Trust Grant No.
J-813, and Ph. H., M.P., and W.S. acknowledge support by the Alexander
von Humboldt-foundation through the Feodor-Lynen program. It is a
pleasure to acknowledge the use of resources provided by the New Mexico
Computing Applications Center (NMCAC) on Encanto, and of computer
resources provided by the DOE through the USQCD project at Jefferson Lab
and through its support of the MIT Blue Gene/L. These calculations were
performed using the Chroma software suite [118]. We are indebted to
members of the MILC Collaboration for providing the dynamical quark
configurations that made our full QCD calculations possible.
NR 118
TC 120
Z9 120
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 5
PY 2010
VL 82
IS 9
AR 094502
DI 10.1103/PhysRevD.82.094502
PG 57
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 675QA
UT WOS:000283844300005
ER
PT J
AU Aaltonen, T
Adelman, J
Gonzalez, BA
Amerio, S
Amidei, D
Anastassov, A
Annovi, A
Antos, J
Apollinari, G
Appel, J
Apresyan, A
Arisawa, T
Artikov, A
Asaadi, J
Ashmanskas, W
Attal, A
Aurisano, A
Azfar, F
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Barria, P
Bartos, P
Bauer, G
Beauchemin, PH
Bedeschi, F
Beecher, D
Behari, S
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Bhatti, A
Binkley, M
Bisello, D
Bizjak, I
Blair, RE
Blocker, C
Blumenfeld, B
Bocci, A
Bodek, A
Boisvert, V
Bortoletto, D
Boudreau, J
Boveia, A
Brau, B
Bridgeman, A
Brigliadori, L
Bromberg, C
Brubaker, E
Budagov, J
Budd, HS
Budd, S
Burkett, K
Busetto, G
Bussey, P
Buzatu, A
Byrum, KL
Cabrera, S
Calancha, C
Camarda, S
Campanelli, M
Campbell, M
Canelli, F
Canepa, A
Carls, B
Carlsmith, D
Carosi, R
Carrillo, S
Carron, S
Casal, B
Casarsa, M
Castro, A
Catastini, P
Cauz, D
Cavaliere, V
Cavalli-Sforza, M
Cerri, A
Cerrito, L
Chang, SH
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Cho, K
Chokheli, D
Chou, JP
Chung, K
Chung, WH
Chung, YS
Chwalek, T
Ciobanu, CI
Ciocci, MA
Clark, A
Clark, D
Compostella, G
Convery, ME
Conway, J
Corbo, M
Cordelli, M
Cox, CA
Cox, DJ
Crescioli, F
Almenar, CC
Cuevas, J
Culbertson, R
Cully, JC
Dagenhart, D
d'Ascenzo, N
Datta, M
Davies, T
de Barbaro, P
De Cecco, S
Deisher, A
De Lorenzo, G
Dell'Orso, M
Deluca, C
Demortier, L
Deng, J
Deninno, M
d'Errico, M
Di Canto, A
Di Ruzza, B
Dittmann, JR
D'Onofrio, M
Donati, S
Dong, P
Dorigo, T
Dube, S
Ebina, K
Elagin, A
Erbacher, R
Errede, D
Errede, S
Ershaidat, N
Eusebi, R
Fang, HC
Farrington, S
Fedorko, WT
Feild, RG
Feindt, M
Fernandez, JP
Ferrazza, C
Field, R
Flanagan, G
Forrest, R
Frank, MJ
Franklin, M
Freeman, JC
Furic, I
Gallinaro, M
Galyardt, J
Garberson, F
Garcia, JE
Garfinkel, AF
Garosi, P
Gerberich, H
Gerdes, D
Gessler, A
Giagu, S
Giakoumopoulou, V
Giannetti, P
Gibson, K
Gimmell, JL
Ginsburg, CM
Giokaris, N
Giordani, M
Giromini, P
Giunta, M
Giurgiu, G
Glagolev, V
Glenzinski, D
Gold, M
Goldschmidt, N
Golossanov, A
Gomez, G
Gomez-Ceballos, G
Goncharov, M
Gonzalez, O
Gorelov, I
Goshaw, AT
Goulianos, K
Gresele, A
Grinstein, S
Grosso-Pilcher, C
Group, RC
Grundler, U
da Costa, JG
Gunay-Unalan, Z
Haber, C
Hahn, SR
Halkiadakis, E
Han, BY
Han, JY
Happacher, F
Hara, K
Hare, D
Hare, M
Harr, RF
Hartz, M
Hatakeyama, K
Hays, C
Heck, M
Heinrich, J
Herndon, M
Heuser, J
Hewamanage, S
Hidas, D
Hill, CS
Hirschbuehl, D
Hocker, A
Hou, S
Houlden, M
Hsu, SC
Hughes, RE
Hurwitz, M
Husemann, U
Hussein, M
Huston, J
Incandela, J
Introzzi, G
Iori, M
Ivanov, A
James, E
Jang, D
Jayatilaka, B
Jeon, EJ
Jha, MK
Jindariani, S
Johnson, W
Jones, M
Joo, KK
Jun, SY
Jung, JE
Junk, TR
Kamon, T
Kar, D
Karchin, PE
Kato, Y
Kephart, R
Ketchum, W
Keung, J
Khotilovich, V
Kilminster, B
Kim, DH
Kim, HS
Kim, HW
Kim, JE
Kim, MJ
Kim, SB
Kim, SH
Kim, YK
Kimura, N
Kirsch, L
Klimenko, S
Ko, BR
Kondo, K
Kong, DJ
Konigsberg, J
Korytov, A
Kotwal, AV
Kreps, M
Kroll, J
Krop, D
Krumnack, N
Kruse, M
Krutelyov, V
Kuhr, T
Kulkarni, NP
Kurata, M
Kwang, S
Laasanen, AT
Lami, S
Lammel, S
Lancaster, M
Lander, RL
Lannon, K
Lath, A
Latino, G
Lazzizzera, I
LeCompte, T
Lee, E
Lee, HS
Lee, JS
Lee, SW
Leone, S
Lewis, JD
Lin, CJ
Linacre, J
Lindgren, M
Lipeles, E
Lister, A
Litvintsev, DO
Liu, C
Liu, T
Lockyer, NS
Loginov, A
Lovas, L
Lucchesi, D
Lueck, J
Lujan, P
Lukens, P
Lungu, G
Lys, J
Lysak, R
MacQueen, D
Madrak, R
Maeshima, K
Makhoul, K
Maksimovic, P
Malde, S
Malik, S
Manca, G
Manousakis-Katsikakis, A
Margaroli, F
Marino, C
Marino, CP
Martin, A
Martin, V
Martinez, M
Martinez-Ballarin, R
Mastrandrea, P
Mathis, M
Mattson, ME
Mazzanti, P
McFarland, KS
McIntyre, P
McNulty, R
Mehta, A
Mehtala, P
Menzione, A
Mesropian, C
Miao, T
Mietlicki, D
Miladinovic, N
Miller, R
Mills, C
Milnik, M
Mitra, A
Mitselmakher, G
Miyake, H
Moed, S
Moggi, N
Mondragon, MN
Moon, CS
Moore, R
Morello, MJ
Morlock, J
Fernandez, PM
Mulmenstadt, J
Mukherjee, A
Muller, T
Murat, P
Mussini, M
Nachtman, J
Nagai, Y
Naganoma, J
Nakamura, K
Nakano, I
Napier, A
Nett, J
Neu, C
Neubauer, MS
Neubauer, S
Nielsen, J
Nodulman, L
Norman, M
Norniella, O
Nurse, E
Oakes, L
Oh, SH
Oh, YD
Oksuzian, I
Okusawa, T
Orava, R
Osterberg, K
Griso, SP
Pagliarone, C
Palencia, E
Papadimitriou, V
Papaikonomou, A
Paramanov, AA
Parks, B
Pashapour, S
Patrick, J
Pauletta, G
Paulini, M
Paus, C
Peiffer, T
Pellett, DE
Penzo, A
Phillips, TJ
Piacentino, G
Pianori, E
Pinera, L
Pitts, K
Plager, C
Pondrom, L
Potamianos, K
Poukhov, O
Prokoshin, F
Pronko, A
Ptohos, F
Pueschel, E
Punzi, G
Pursley, J
Rademacker, J
Rahaman, A
Ramakrishnan, V
Ranjan, N
Redondo, I
Renton, P
Renz, M
Rescigno, M
Richter, S
Rimondi, F
Ristori, L
Robson, A
Rodrigo, T
Rodriguez, T
Rogers, E
Rolli, S
Roser, R
Rossi, M
Rossin, R
Roy, P
Ruiz, A
Russ, J
Rusu, V
Rutherford, B
Saarikko, H
Safonov, A
Sakumoto, WK
Santi, L
Sartori, L
Sato, K
Saveliev, V
Savoy-Navarro, A
Schlabach, P
Schmidt, A
Schmidt, EE
Schmidt, MA
Schmidt, MP
Schmitt, M
Schwarz, T
Scodellaro, L
Scribano, A
Scuri, F
Sedov, A
Seidel, S
Seiya, Y
Semenov, A
Sexton-Kennedy, L
Sforza, F
Sfyrla, A
Shalhout, SZ
Shears, T
Shepard, PF
Shimojima, M
Shiraishi, S
Shochet, M
Shon, Y
Shreyber, I
Simonenko, A
Sinervo, P
Sisakyan, A
Slaughter, AJ
Slaunwhite, J
Sliwa, K
Smith, JR
Snider, FD
Snihur, R
Soha, A
Somalwar, S
Sorin, V
Squillacioti, P
Stanitzki, M
St Denis, R
Stelzer, B
Stelzer-Chilton, O
Stentz, D
Strologas, J
Strycker, GL
Suh, JS
Sukhanov, A
Suslov, I
Taffard, A
Takashima, R
Takeuchi, Y
Tanaka, R
Tang, J
Tecchio, M
Teng, PK
Thom, J
Thome, J
Thompson, GA
Thomson, E
Tipton, P
Ttito-Guzman, P
Tkaczyk, S
Toback, D
Tokar, S
Tollefson, K
Tomura, T
Tonelli, D
Torre, S
Torretta, D
Totaro, P
Trovato, M
Tsai, SY
Tu, Y
Turini, N
Ukegawa, F
Uozumi, S
van Remortel, N
Varganov, A
Vataga, E
Vazquez, F
Velev, G
Vellidis, C
Vidal, M
Vila, I
Vilar, R
Vogel, M
Volobouev, I
Volpi, G
Wagner, P
Wagner, RG
Wagner, RL
Wagner, W
Wagner-Kuhr, J
Wakisaka, T
Wallny, R
Wang, SM
Warburton, A
Waters, D
Weinberger, M
Weinelt, J
Wester, WC
Whitehouse, B
Whiteson, D
Wicklund, AB
Wicklund, E
Wilbur, S
Williams, G
Williams, HH
Wilson, P
Winer, BL
Wittich, P
Wolbers, S
Wolfe, C
Wolfe, H
Wright, T
Wu, X
Wurthwein, F
Yagil, A
Yamamoto, K
Yamaoka, J
Yang, UK
Yang, YC
Yao, WM
Yeh, GP
Yi, K
Yoh, J
Yorita, K
Yoshida, T
Yu, GB
Yu, I
Yu, SS
Yun, JC
Zanetti, A
Zeng, Y
Zhang, X
Zheng, Y
Zucchelli, S
AF Aaltonen, T.
Adelman, J.
Alvarez Gonzalez, B.
Amerio, S.
Amidei, D.
Anastassov, A.
Annovi, A.
Antos, J.
Apollinari, G.
Appel, J.
Apresyan, A.
Arisawa, T.
Artikov, A.
Asaadi, J.
Ashmanskas, W.
Attal, A.
Aurisano, A.
Azfar, F.
Badgett, W.
Barbaro-Galtieri, A.
Barnes, V. E.
Barnett, B. A.
Barria, P.
Bartos, P.
Bauer, G.
Beauchemin, P. -H.
Bedeschi, F.
Beecher, D.
Behari, S.
Bellettini, G.
Bellinger, J.
Benjamin, D.
Beretvas, A.
Bhatti, A.
Binkley, M.
Bisello, D.
Bizjak, I.
Blair, R. E.
Blocker, C.
Blumenfeld, B.
Bocci, A.
Bodek, A.
Boisvert, V.
Bortoletto, D.
Boudreau, J.
Boveia, A.
Brau, B.
Bridgeman, A.
Brigliadori, L.
Bromberg, C.
Brubaker, E.
Budagov, J.
Budd, H. S.
Budd, S.
Burkett, K.
Busetto, G.
Bussey, P.
Buzatu, A.
Byrum, K. L.
Cabrera, S.
Calancha, C.
Camarda, S.
Campanelli, M.
Campbell, M.
Canelli, F.
Canepa, A.
Carls, B.
Carlsmith, D.
Carosi, R.
Carrillo, S.
Carron, S.
Casal, B.
Casarsa, M.
Castro, A.
Catastini, P.
Cauz, D.
Cavaliere, V.
Cavalli-Sforza, M.
Cerri, A.
Cerrito, L.
Chang, S. H.
Chen, Y. C.
Chertok, M.
Chiarelli, G.
Chlachidze, G.
Chlebana, F.
Cho, K.
Chokheli, D.
Chou, J. P.
Chung, K.
Chung, W. H.
Chung, Y. S.
Chwalek, T.
Ciobanu, C. I.
Ciocci, M. A.
Clark, A.
Clark, D.
Compostella, G.
Convery, M. E.
Conway, J.
Corbo, M.
Cordelli, M.
Cox, C. A.
Cox, D. J.
Crescioli, F.
Almenar, C. Cuenca
Cuevas, J.
Culbertson, R.
Cully, J. C.
Dagenhart, D.
d'Ascenzo, N.
Datta, M.
Davies, T.
de Barbaro, P.
De Cecco, S.
Deisher, A.
De Lorenzo, G.
Dell'Orso, M.
Deluca, C.
Demortier, L.
Deng, J.
Deninno, M.
d'Errico, M.
Di Canto, A.
Di Ruzza, B.
Dittmann, J. R.
D'Onofrio, M.
Donati, S.
Dong, P.
Dorigo, T.
Dube, S.
Ebina, K.
Elagin, A.
Erbacher, R.
Errede, D.
Errede, S.
Ershaidat, N.
Eusebi, R.
Fang, H. C.
Farrington, S.
Fedorko, W. T.
Feild, R. G.
Feindt, M.
Fernandez, J. P.
Ferrazza, C.
Field, R.
Flanagan, G.
Forrest, R.
Frank, M. J.
Franklin, M.
Freeman, J. C.
Furic, I.
Gallinaro, M.
Galyardt, J.
Garberson, F.
Garcia, J. E.
Garfinkel, A. F.
Garosi, P.
Gerberich, H.
Gerdes, D.
Gessler, A.
Giagu, S.
Giakoumopoulou, V.
Giannetti, P.
Gibson, K.
Gimmell, J. L.
Ginsburg, C. M.
Giokaris, N.
Giordani, M.
Giromini, P.
Giunta, M.
Giurgiu, G.
Glagolev, V.
Glenzinski, D.
Gold, M.
Goldschmidt, N.
Golossanov, A.
Gomez, G.
Gomez-Ceballos, G.
Goncharov, M.
Gonzalez, O.
Gorelov, I.
Goshaw, A. T.
Goulianos, K.
Gresele, A.
Grinstein, S.
Grosso-Pilcher, C.
Group, R. C.
Grundler, U.
da Costa, J. Guimaraes
Gunay-Unalan, Z.
Haber, C.
Hahn, S. R.
Halkiadakis, E.
Han, B. -Y.
Han, J. Y.
Happacher, F.
Hara, K.
Hare, D.
Hare, M.
Harr, R. F.
Hartz, M.
Hatakeyama, K.
Hays, C.
Heck, M.
Heinrich, J.
Herndon, M.
Heuser, J.
Hewamanage, S.
Hidas, D.
Hill, C. S.
Hirschbuehl, D.
Hocker, A.
Hou, S.
Houlden, M.
Hsu, S. -C.
Hughes, R. E.
Hurwitz, M.
Husemann, U.
Hussein, M.
Huston, J.
Incandela, J.
Introzzi, G.
Iori, M.
Ivanov, A.
James, E.
Jang, D.
Jayatilaka, B.
Jeon, E. J.
Jha, M. K.
Jindariani, S.
Johnson, W.
Jones, M.
Joo, K. K.
Jun, S. Y.
Jung, J. E.
Junk, T. R.
Kamon, T.
Kar, D.
Karchin, P. E.
Kato, Y.
Kephart, R.
Ketchum, W.
Keung, J.
Khotilovich, V.
Kilminster, B.
Kim, D. H.
Kim, H. S.
Kim, H. W.
Kim, J. E.
Kim, M. J.
Kim, S. B.
Kim, S. H.
Kim, Y. K.
Kimura, N.
Kirsch, L.
Klimenko, S.
Ko, B. R.
Kondo, K.
Kong, D. J.
Konigsberg, J.
Korytov, A.
Kotwal, A. V.
Kreps, M.
Kroll, J.
Krop, D.
Krumnack, N.
Kruse, M.
Krutelyov, V.
Kuhr, T.
Kulkarni, N. P.
Kurata, M.
Kwang, S.
Laasanen, A. T.
Lami, S.
Lammel, S.
Lancaster, M.
Lander, R. L.
Lannon, K.
Lath, A.
Latino, G.
Lazzizzera, I.
LeCompte, T.
Lee, E.
Lee, H. S.
Lee, J. S.
Lee, S. W.
Leone, S.
Lewis, J. D.
Lin, C. -J.
Linacre, J.
Lindgren, M.
Lipeles, E.
Lister, A.
Litvintsev, D. O.
Liu, C.
Liu, T.
Lockyer, N. S.
Loginov, A.
Lovas, L.
Lucchesi, D.
Lueck, J.
Lujan, P.
Lukens, P.
Lungu, G.
Lys, J.
Lysak, R.
MacQueen, D.
Madrak, R.
Maeshima, K.
Makhoul, K.
Maksimovic, P.
Malde, S.
Malik, S.
Manca, G.
Manousakis-Katsikakis, A.
Margaroli, F.
Marino, C.
Marino, C. P.
Martin, A.
Martin, V.
Martinez, M.
Martinez-Ballarin, R.
Mastrandrea, P.
Mathis, M.
Mattson, M. E.
Mazzanti, P.
McFarland, K. S.
McIntyre, P.
McNulty, R.
Mehta, A.
Mehtala, P.
Menzione, A.
Mesropian, C.
Miao, T.
Mietlicki, D.
Miladinovic, N.
Miller, R.
Mills, C.
Milnik, M.
Mitra, A.
Mitselmakher, G.
Miyake, H.
Moed, S.
Moggi, N.
Mondragon, M. N.
Moon, C. S.
Moore, R.
Morello, M. J.
Morlock, J.
Fernandez, P. Movilla
Muelmenstaedt, J.
Mukherjee, A.
Muller, Th.
Murat, P.
Mussini, M.
Nachtman, J.
Nagai, Y.
Naganoma, J.
Nakamura, K.
Nakano, I.
Napier, A.
Nett, J.
Neu, C.
Neubauer, M. S.
Neubauer, S.
Nielsen, J.
Nodulman, L.
Norman, M.
Norniella, O.
Nurse, E.
Oakes, L.
Oh, S. H.
Oh, Y. D.
Oksuzian, I.
Okusawa, T.
Orava, R.
Osterberg, K.
Griso, S. Pagan
Pagliarone, C.
Palencia, E.
Papadimitriou, V.
Papaikonomou, A.
Paramanov, A. A.
Parks, B.
Pashapour, S.
Patrick, J.
Pauletta, G.
Paulini, M.
Paus, C.
Peiffer, T.
Pellett, D. E.
Penzo, A.
Phillips, T. J.
Piacentino, G.
Pianori, E.
Pinera, L.
Pitts, K.
Plager, C.
Pondrom, L.
Potamianos, K.
Poukhov, O.
Prokoshin, F.
Pronko, A.
Ptohos, F.
Pueschel, E.
Punzi, G.
Pursley, J.
Rademacker, J.
Rahaman, A.
Ramakrishnan, V.
Ranjan, N.
Redondo, I.
Renton, P.
Renz, M.
Rescigno, M.
Richter, S.
Rimondi, F.
Ristori, L.
Robson, A.
Rodrigo, T.
Rodriguez, T.
Rogers, E.
Rolli, S.
Roser, R.
Rossi, M.
Rossin, R.
Roy, P.
Ruiz, A.
Russ, J.
Rusu, V.
Rutherford, B.
Saarikko, H.
Safonov, A.
Sakumoto, W. K.
Santi, L.
Sartori, L.
Sato, K.
Saveliev, V.
Savoy-Navarro, A.
Schlabach, P.
Schmidt, A.
Schmidt, E. E.
Schmidt, M. A.
Schmidt, M. P.
Schmitt, M.
Schwarz, T.
Scodellaro, L.
Scribano, A.
Scuri, F.
Sedov, A.
Seidel, S.
Seiya, Y.
Semenov, A.
Sexton-Kennedy, L.
Sforza, F.
Sfyrla, A.
Shalhout, S. Z.
Shears, T.
Shepard, P. F.
Shimojima, M.
Shiraishi, S.
Shochet, M.
Shon, Y.
Shreyber, I.
Simonenko, A.
Sinervo, P.
Sisakyan, A.
Slaughter, A. J.
Slaunwhite, J.
Sliwa, K.
Smith, J. R.
Snider, F. D.
Snihur, R.
Soha, A.
Somalwar, S.
Sorin, V.
Squillacioti, P.
Stanitzki, M.
St Denis, R.
Stelzer, B.
Stelzer-Chilton, O.
Stentz, D.
Strologas, J.
Strycker, G. L.
Suh, J. S.
Sukhanov, A.
Suslov, I.
Taffard, A.
Takashima, R.
Takeuchi, Y.
Tanaka, R.
Tang, J.
Tecchio, M.
Teng, P. K.
Thom, J.
Thome, J.
Thompson, G. A.
Thomson, E.
Tipton, P.
Ttito-Guzman, P.
Tkaczyk, S.
Toback, D.
Tokar, S.
Tollefson, K.
Tomura, T.
Tonelli, D.
Torre, S.
Torretta, D.
Totaro, P.
Trovato, M.
Tsai, S. -Y.
Tu, Y.
Turini, N.
Ukegawa, F.
Uozumi, S.
van Remortel, N.
Varganov, A.
Vataga, E.
Vazquez, F.
Velev, G.
Vellidis, C.
Vidal, M.
Vila, I.
Vilar, R.
Vogel, M.
Volobouev, I.
Volpi, G.
Wagner, P.
Wagner, R. G.
Wagner, R. L.
Wagner, W.
Wagner-Kuhr, J.
Wakisaka, T.
Wallny, R.
Wang, S. M.
Warburton, A.
Waters, D.
Weinberger, M.
Weinelt, J.
Wester, W. C., III
Whitehouse, B.
Whiteson, D.
Wicklund, A. B.
Wicklund, E.
Wilbur, S.
Williams, G.
Williams, H. H.
Wilson, P.
Winer, B. L.
Wittich, P.
Wolbers, S.
Wolfe, C.
Wolfe, H.
Wright, T.
Wu, X.
Wuerthwein, F.
Yagil, A.
Yamamoto, K.
Yamaoka, J.
Yang, U. K.
Yang, Y. C.
Yao, W. M.
Yeh, G. P.
Yi, K.
Yoh, J.
Yorita, K.
Yoshida, T.
Yu, G. B.
Yu, I.
Yu, S. S.
Yun, J. C.
Zanetti, A.
Zeng, Y.
Zhang, X.
Zheng, Y.
Zucchelli, S.
CA CDF Collaboration
TI Search for R-Parity Violating Decays of Sneutrinos to e mu, mu tau, and
e tau Pairs in p(p)over-bar Collisions at root s=1.96 TeV
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID SUPERSYMMETRY; PHYSICS
AB We present a search for supersymmetric neutrino (nu) over tilde production using the Tevatron p (p) over bar collision data collected with the CDF II detector and corresponding to an integrated luminosity of 1 fb(-1). We focus on the scenarios predicted by the R-parity violating (RPV) supersymmetric models in which sneutrinos decay to two charged leptons of different flavor. With the data consistent with the standard model expectations, we set upper limits on sigma(p (p) over bar -> (nu) over tilde) BR((nu) over tilde -> e mu, mu tau, e tau) and use these results to constrain the RPV couplings as a function of the sneutrino mass.
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RP Aaltonen, T (reprint author), Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
RI Muelmenstaedt, Johannes/K-2432-2015; Introzzi, Gianluca/K-2497-2015;
Piacentino, Giovanni/K-3269-2015; Martinez Ballarin,
Roberto/K-9209-2015; Gorelov, Igor/J-9010-2015; Prokoshin,
Fedor/E-2795-2012; Canelli, Florencia/O-9693-2016; Ivanov,
Andrew/A-7982-2013; St.Denis, Richard/C-8997-2012; Ruiz,
Alberto/E-4473-2011; Punzi, Giovanni/J-4947-2012; manca,
giulia/I-9264-2012; Amerio, Silvia/J-4605-2012; Annovi,
Alberto/G-6028-2012; Zeng, Yu/C-1438-2013; Robson, Aidan/G-1087-2011; De
Cecco, Sandro/B-1016-2012; Warburton, Andreas/N-8028-2013; Kim,
Soo-Bong/B-7061-2014; Lysak, Roman/H-2995-2014; Moon,
Chang-Seong/J-3619-2014; Scodellaro, Luca/K-9091-2014; Grinstein,
Sebastian/N-3988-2014; Paulini, Manfred/N-7794-2014; Russ,
James/P-3092-2014; unalan, zeynep/C-6660-2015; Lazzizzera,
Ignazio/E-9678-2015; Cabrera Urban, Susana/H-1376-2015; Garcia, Jose
/H-6339-2015; ciocci, maria agnese /I-2153-2015; Cavalli-Sforza,
Matteo/H-7102-2015; Chiarelli, Giorgio/E-8953-2012
OI Muelmenstaedt, Johannes/0000-0003-1105-6678; Introzzi,
Gianluca/0000-0002-1314-2580; Piacentino, Giovanni/0000-0001-9884-2924;
Martinez Ballarin, Roberto/0000-0003-0588-6720; Gorelov,
Igor/0000-0001-5570-0133; Prokoshin, Fedor/0000-0001-6389-5399; Canelli,
Florencia/0000-0001-6361-2117; Ivanov, Andrew/0000-0002-9270-5643; Ruiz,
Alberto/0000-0002-3639-0368; Punzi, Giovanni/0000-0002-8346-9052;
Annovi, Alberto/0000-0002-4649-4398; Warburton,
Andreas/0000-0002-2298-7315; Moon, Chang-Seong/0000-0001-8229-7829;
Scodellaro, Luca/0000-0002-4974-8330; Grinstein,
Sebastian/0000-0002-6460-8694; Paulini, Manfred/0000-0002-6714-5787;
Russ, James/0000-0001-9856-9155; unalan, zeynep/0000-0003-2570-7611;
Lazzizzera, Ignazio/0000-0001-5092-7531; ciocci, maria agnese
/0000-0003-0002-5462; Chiarelli, Giorgio/0000-0001-9851-4816
FU U.S. Department of Energy; National Science Foundation; Italian Istituto
Nazionale di Fisica Nucleare; Ministry of Education, Culture, Sports,
Science and Technology of Japan; Natural Sciences and Engineering
Research Council of Canada; National Science Council of the Republic of
China; Swiss National Science Foundation; A. P. Sloan Foundation;
Bundesministerium fur Bildung und Forschung, Germany; World Class
University; National Research Foundation of Korea; Science and
Technology Facilities Council; Royal Society, UK; Institut National de
Physique Nucleaire et Physique des Particules/CNRS; Russian Foundation
for Basic Research; Ministerio de Ciencia e Innovacion; Programa
Consolider-Ingenio, Spain; Slovak RD Agency; Academy of Finland
FX We thank the Fermilab staff and the technical staffs of the
participating institutions for their vital contributions. This work was
supported by the U.S. Department of Energy and National Science
Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the
Ministry of Education, Culture, Sports, Science and Technology of Japan;
the Natural Sciences and Engineering Research Council of Canada; the
National Science Council of the Republic of China; the Swiss National
Science Foundation; the A. P. Sloan Foundation; the Bundesministerium
fur Bildung und Forschung, Germany; the World Class University Program,
the National Research Foundation of Korea; the Science and Technology
Facilities Council and the Royal Society, UK; the Institut National de
Physique Nucleaire et Physique des Particules/CNRS; the Russian
Foundation for Basic Research; the Ministerio de Ciencia e Innovacion,
and Programa Consolider-Ingenio 2010, Spain; the Slovak R&D Agency; and
the Academy of Finland.
NR 30
TC 13
Z9 13
U1 3
U2 21
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 5
PY 2010
VL 105
IS 19
AR 191801
DI 10.1103/PhysRevLett.105.191801
PG 7
WC Physics, Multidisciplinary
SC Physics
GA 675RT
UT WOS:000283849300004
ER
PT J
AU Abazov, VM
Abbott, B
Abolins, M
Acharya, BS
Adams, M
Adams, T
Alexeev, GD
Alkhazov, G
Alton, A
Alverson, G
Alves, GA
Ancu, LS
Aoki, M
Arnoud, Y
Arov, M
Askew, A
Asman, B
Atramentov, O
Avila, C
BackusMayes, J
Badaud, F
Bagby, L
Baldin, B
Bandurin, DV
Banerjee, S
Barberis, E
Baringer, P
Barreto, J
Bartlett, JF
Bassler, U
Beale, S
Bean, A
Begalli, M
Begel, M
Belanger-Champagne, C
Bellantoni, L
Benitez, JA
Beri, SB
Bernardi, G
Bernhard, R
Bertram, I
Besancon, M
Beuselinck, R
Bezzubov, VA
Bhat, PC
Bhatnagar, V
Blazey, G
Blessing, S
Bloom, K
Boehnlein, A
Boline, D
Bolton, TA
Boos, EE
Borissov, G
Bose, T
Brandt, A
Brandt, O
Brock, R
Brooijmans, G
Bross, A
Brown, D
Brown, J
Bu, XB
Buchholz, D
Buehler, M
Buescher, V
Bunichev, V
Burdin, S
Burnett, TH
Buszello, CP
Calpas, B
Calvet, S
Camacho-Perez, E
Carrasco-Lizarraga, MA
Carrera, E
Casey, BCK
Castilla-Valdez, H
Chakrabarti, S
Chakraborty, D
Chan, KM
Chandra, A
Chen, G
Chevalier-Thery, S
Cho, DK
Cho, SW
Choi, S
Choudhary, B
Christoudias, T
Cihangir, S
Claes, D
Clutter, J
Cooke, M
Cooper, WE
Corcoran, M
Couderc, F
Cousinou, MC
Croc, A
Cutts, D
Cwiok, M
Das, A
Davies, G
De, K
de Jong, SJ
De La Cruz-Burelo, E
Deliot, F
Demarteau, M
Demina, R
Denisov, D
Denisov, SP
Desai, S
DeVaughan, K
Diehl, HT
Diesburg, M
Ding, PF
Dominguez, A
Dorland, T
Dubey, A
Dudko, LV
Duggan, D
Duperrin, A
Dutt, S
Dyshkant, A
Eads, M
Edmunds, D
Ellison, J
Elvira, VD
Enari, Y
Eno, S
Evans, H
Evdokimov, A
Evdokimov, VN
Facini, G
Ferapontov, AV
Ferbel, T
Fiedler, F
Filthaut, F
Fisher, W
Fisk, HE
Fortner, M
Fox, H
Fuess, S
Gadfort, T
Garcia-Bellido, A
Gavrilov, V
Gay, P
Geist, W
Geng, W
Gerbaudo, D
Gerber, CE
Gershtein, Y
Ginther, G
Golovanov, G
Goussiou, A
Grannis, PD
Greder, S
Greenlee, H
Greenwood, ZD
Gregores, EM
Grenier, G
Gris, P
Grivaz, JF
Grohsjean, A
Grunendahl, S
Grunewald, MW
Guo, F
Guo, J
Gutierrez, G
Gutierrez, P
Haas, A
Hagopian, S
Haley, J
Han, L
Harder, K
Harel, A
Hauptman, JM
Hays, J
Hebbeker, T
Hedin, D
Hegab, H
Heinson, AP
Heintz, U
Hensel, C
Heredia-De La Cruz, I
Herner, K
Hesketh, G
Hildreth, MD
Hirosky, R
Hoang, T
Hobbs, JD
Hoeneisen, B
Hohlfeld, M
Hossain, S
Hubacek, Z
Huske, N
Hynek, V
Iashvili, I
Illingworth, R
Ito, AS
Jabeen, S
Jaffre, M
Jain, S
Jamin, D
Jesik, R
Johns, K
Johnson, M
Johnston, D
Jonckheere, A
Jonsson, P
Joshi, J
Juste, A
Kaadze, K
Kajfasz, E
Karmanov, D
Kasper, PA
Katsanos, I
Kehoe, R
Kermiche, S
Khalatyan, N
Khanov, A
Kharchilava, A
Kharzheev, YN
Khatidze, D
Kirby, MH
Kohli, JM
Kozelov, AV
Kraus, J
Kumar, A
Kupco, A
Kurca, T
Kuzmin, VA
Kvita, J
Lammers, S
Landsberg, G
Lebrun, P
Lee, HS
Lee, SW
Lee, WM
Lellouch, J
Li, L
Li, QZ
Lietti, SM
Lim, JK
Lincoln, D
Linnemann, J
Lipaev, VV
Lipton, R
Liu, YLZ
Liu, Z
Lobodenko, A
Lokajicek, M
Love, P
Lubatti, HJ
Luna-Garcia, R
Lyon, AL
Maciel, AKA
Mackin, D
Madar, R
Magana-Villalba, R
Malik, S
Malyshev, VL
Maravin, Y
Martinez-Ortega, J
McCarthy, R
McGivern, CL
Meijer, MM
Melnitchouk, A
Menezes, D
Mercadante, PG
Merkin, M
Meyer, A
Meyer, J
Mondal, NK
Muanza, GS
Mulhearn, M
Nagy, E
Naimuddin, M
Narain, M
Nayyar, R
Neal, HA
Negret, JP
Neustroev, P
Nilsen, H
Novaes, SF
Nunnemann, T
Obrant, G
Onoprienko, D
Orduna, J
Osman, N
Osta, J
Garzon, GJOY
Owen, M
Padilla, M
Pangilinan, M
Parashar, N
Parihar, V
Park, SK
Parsons, J
Partridge, R
Parua, N
Patwa, A
Penning, B
Perfilov, M
Peters, K
Peters, Y
Petrillo, G
Petroff, P
Piegaia, R
Piper, J
Pleier, MA
Podesta-Lerma, PLM
Podstavkov, VM
Pol, ME
Polozov, P
Popov, AV
Prewitt, M
Price, D
Protopopescu, S
Qian, J
Quadt, A
Quinn, B
Rangel, MS
Ranjan, K
Ratoff, PN
Razumov, I
Renkel, P
Rich, P
Rijssenbeek, M
Ripp-Baudot, I
Rizatdinova, F
Rominsky, M
Royon, C
Rubinov, P
Ruchti, R
Safronov, G
Sajot, G
Sanchez-Hernandez, A
Sanders, MP
Sanghi, B
Santos, AS
Savage, G
Sawyer, L
Scanlon, T
Schamberger, RD
Scheglov, Y
Schellman, H
Schliephake, T
Schlobohm, S
Schwanenberger, C
Schwienhorst, R
Sekaric, J
Severini, H
Shabalina, E
Shary, V
Shchukin, AA
Shivpuri, RK
Simak, V
Sirotenko, V
Skubic, P
Slattery, P
Smirnov, D
Smith, KJ
Snow, GR
Snow, J
Snyder, S
Soldner-Rembold, S
Sonnenschein, L
Sopczak, A
Sosebee, M
Soustruznik, K
Spurlock, B
Stark, J
Stolin, V
Stoyanova, DA
Strauss, E
Strauss, M
Strom, D
Stutte, L
Svoisky, P
Takahashi, M
Tanasijczuk, A
Taylor, W
Titov, M
Tokmenin, VV
Tsybychev, D
Tuchming, B
Tully, C
Tuts, PM
Uvarov, L
Uvarov, S
Uzunyan, S
Van Kooten, R
van Leeuwen, WM
Varelas, N
Varnes, EW
Vasilyev, IA
Verdier, P
Vertogradov, LS
Verzocchi, M
Vesterinen, M
Vilanova, D
Vint, P
Vokac, P
Wahl, HD
Wang, MHLS
Warchol, J
Watts, G
Wayne, M
Weber, M
Wetstein, M
White, A
Wicke, D
Williams, MRJ
Wilson, GW
Wimpenny, SJ
Wobisch, M
Wood, DR
Wyatt, TR
Xie, Y
Xu, C
Yacoob, S
Yamada, R
Yang, WC
Yasuda, T
Yatsunenko, YA
Ye, Z
Yin, H
Yip, K
Yoo, HD
Youn, SW
Yu, J
Zelitch, S
Zhao, T
Zhou, B
Zhu, J
Zielinski, M
Zieminska, D
Zivkovic, L
AF Abazov, V. M.
Abbott, B.
Abolins, M.
Acharya, B. S.
Adams, M.
Adams, T.
Alexeev, G. D.
Alkhazov, G.
Alton, A.
Alverson, G.
Alves, G. A.
Ancu, L. S.
Aoki, M.
Arnoud, Y.
Arov, M.
Askew, A.
Asman, B.
Atramentov, O.
Avila, C.
BackusMayes, J.
Badaud, F.
Bagby, L.
Baldin, B.
Bandurin, D. V.
Banerjee, S.
Barberis, E.
Baringer, P.
Barreto, J.
Bartlett, J. F.
Bassler, U.
Beale, S.
Bean, A.
Begalli, M.
Begel, M.
Belanger-Champagne, C.
Bellantoni, L.
Benitez, J. A.
Beri, S. B.
Bernardi, G.
Bernhard, R.
Bertram, I.
Besancon, M.
Beuselinck, R.
Bezzubov, V. A.
Bhat, P. C.
Bhatnagar, V.
Blazey, G.
Blessing, S.
Bloom, K.
Boehnlein, A.
Boline, D.
Bolton, T. A.
Boos, E. E.
Borissov, G.
Bose, T.
Brandt, A.
Brandt, O.
Brock, R.
Brooijmans, G.
Bross, A.
Brown, D.
Brown, J.
Bu, X. B.
Buchholz, D.
Buehler, M.
Buescher, V.
Bunichev, V.
Burdin, S.
Burnett, T. H.
Buszello, C. P.
Calpas, B.
Calvet, S.
Camacho-Perez, E.
Carrasco-Lizarraga, M. A.
Carrera, E.
Casey, B. C. K.
Castilla-Valdez, H.
Chakrabarti, S.
Chakraborty, D.
Chan, K. M.
Chandra, A.
Chen, G.
Chevalier-Thery, S.
Cho, D. K.
Cho, S. W.
Choi, S.
Choudhary, B.
Christoudias, T.
Cihangir, S.
Claes, D.
Clutter, J.
Cooke, M.
Cooper, W. E.
Corcoran, M.
Couderc, F.
Cousinou, M. -C.
Croc, A.
Cutts, D.
Cwiok, M.
Das, A.
Davies, G.
De, K.
de Jong, S. J.
De La Cruz-Burelo, E.
Deliot, F.
Demarteau, M.
Demina, R.
Denisov, D.
Denisov, S. P.
Desai, S.
DeVaughan, K.
Diehl, H. T.
Diesburg, M.
Ding, P. F.
Dominguez, A.
Dorland, T.
Dubey, A.
Dudko, L. V.
Duggan, D.
Duperrin, A.
Dutt, S.
Dyshkant, A.
Eads, M.
Edmunds, D.
Ellison, J.
Elvira, V. D.
Enari, Y.
Eno, S.
Evans, H.
Evdokimov, A.
Evdokimov, V. N.
Facini, G.
Ferapontov, A. V.
Ferbel, T.
Fiedler, F.
Filthaut, F.
Fisher, W.
Fisk, H. E.
Fortner, M.
Fox, H.
Fuess, S.
Gadfort, T.
Garcia-Bellido, A.
Gavrilov, V.
Gay, P.
Geist, W.
Geng, W.
Gerbaudo, D.
Gerber, C. E.
Gershtein, Y.
Ginther, G.
Golovanov, G.
Goussiou, A.
Grannis, P. D.
Greder, S.
Greenlee, H.
Greenwood, Z. D.
Gregores, E. M.
Grenier, G.
Gris, Ph.
Grivaz, J. -F.
Grohsjean, A.
Gruenendahl, S.
Gruenewald, M. W.
Guo, F.
Guo, J.
Gutierrez, G.
Gutierrez, P.
Haas, A.
Hagopian, S.
Haley, J.
Han, L.
Harder, K.
Harel, A.
Hauptman, J. M.
Hays, J.
Hebbeker, T.
Hedin, D.
Hegab, H.
Heinson, A. P.
Heintz, U.
Hensel, C.
Heredia-De La Cruz, I.
Herner, K.
Hesketh, G.
Hildreth, M. D.
Hirosky, R.
Hoang, T.
Hobbs, J. D.
Hoeneisen, B.
Hohlfeld, M.
Hossain, S.
Hubacek, Z.
Huske, N.
Hynek, V.
Iashvili, I.
Illingworth, R.
Ito, A. S.
Jabeen, S.
Jaffre, M.
Jain, S.
Jamin, D.
Jesik, R.
Johns, K.
Johnson, M.
Johnston, D.
Jonckheere, A.
Jonsson, P.
Joshi, J.
Juste, A.
Kaadze, K.
Kajfasz, E.
Karmanov, D.
Kasper, P. A.
Katsanos, I.
Kehoe, R.
Kermiche, S.
Khalatyan, N.
Khanov, A.
Kharchilava, A.
Kharzheev, Y. N.
Khatidze, D.
Kirby, M. H.
Kohli, J. M.
Kozelov, A. V.
Kraus, J.
Kumar, A.
Kupco, A.
Kurca, T.
Kuzmin, V. A.
Kvita, J.
Lammers, S.
Landsberg, G.
Lebrun, P.
Lee, H. S.
Lee, S. W.
Lee, W. M.
Lellouch, J.
Li, L.
Li, Q. Z.
Lietti, S. M.
Lim, J. K.
Lincoln, D.
Linnemann, J.
Lipaev, V. V.
Lipton, R.
Liu, Y.
Liu, Z.
Lobodenko, A.
Lokajicek, M.
Love, P.
Lubatti, H. J.
Luna-Garcia, R.
Lyon, A. L.
Maciel, A. K. A.
Mackin, D.
Madar, R.
Magana-Villalba, R.
Malik, S.
Malyshev, V. L.
Maravin, Y.
Martinez-Ortega, J.
McCarthy, R.
McGivern, C. L.
Meijer, M. M.
Melnitchouk, A.
Menezes, D.
Mercadante, P. G.
Merkin, M.
Meyer, A.
Meyer, J.
Mondal, N. K.
Muanza, G. S.
Mulhearn, M.
Nagy, E.
Naimuddin, M.
Narain, M.
Nayyar, R.
Neal, H. A.
Negret, J. P.
Neustroev, P.
Nilsen, H.
Novaes, S. F.
Nunnemann, T.
Obrant, G.
Onoprienko, D.
Orduna, J.
Osman, N.
Osta, J.
Otero y Garzon, G. J.
Owen, M.
Padilla, M.
Pangilinan, M.
Parashar, N.
Parihar, V.
Park, S. K.
Parsons, J.
Partridge, R.
Parua, N.
Patwa, A.
Penning, B.
Perfilov, M.
Peters, K.
Peters, Y.
Petrillo, G.
Petroff, P.
Piegaia, R.
Piper, J.
Pleier, M. -A.
Podesta-Lerma, P. L. M.
Podstavkov, V. M.
Pol, M. -E.
Polozov, P.
Popov, A. V.
Prewitt, M.
Price, D.
Protopopescu, S.
Qian, J.
Quadt, A.
Quinn, B.
Rangel, M. S.
Ranjan, K.
Ratoff, P. N.
Razumov, I.
Renkel, P.
Rich, P.
Rijssenbeek, M.
Ripp-Baudot, I.
Rizatdinova, F.
Rominsky, M.
Royon, C.
Rubinov, P.
Ruchti, R.
Safronov, G.
Sajot, G.
Sanchez-Hernandez, A.
Sanders, M. P.
Sanghi, B.
Santos, A. S.
Savage, G.
Sawyer, L.
Scanlon, T.
Schamberger, R. D.
Scheglov, Y.
Schellman, H.
Schliephake, T.
Schlobohm, S.
Schwanenberger, C.
Schwienhorst, R.
Sekaric, J.
Severini, H.
Shabalina, E.
Shary, V.
Shchukin, A. A.
Shivpuri, R. K.
Simak, V.
Sirotenko, V.
Skubic, P.
Slattery, P.
Smirnov, D.
Smith, K. J.
Snow, G. R.
Snow, J.
Snyder, S.
Soeldner-Rembold, S.
Sonnenschein, L.
Sopczak, A.
Sosebee, M.
Soustruznik, K.
Spurlock, B.
Stark, J.
Stolin, V.
Stoyanova, D. A.
Strauss, E.
Strauss, M.
Strom, D.
Stutte, L.
Svoisky, P.
Takahashi, M.
Tanasijczuk, A.
Taylor, W.
Titov, M.
Tokmenin, V. V.
Tsybychev, D.
Tuchming, B.
Tully, C.
Tuts, P. M.
Uvarov, L.
Uvarov, S.
Uzunyan, S.
Van Kooten, R.
van Leeuwen, W. M.
Varelas, N.
Varnes, E. W.
Vasilyev, I. A.
Verdier, P.
Vertogradov, L. S.
Verzocchi, M.
Vesterinen, M.
Vilanova, D.
Vint, P.
Vokac, P.
Wahl, H. D.
Wang, M. H. L. S.
Warchol, J.
Watts, G.
Wayne, M.
Weber, M.
Wetstein, M.
White, A.
Wicke, D.
Williams, M. R. J.
Wilson, G. W.
Wimpenny, S. J.
Wobisch, M.
Wood, D. R.
Wyatt, T. R.
Xie, Y.
Xu, C.
Yacoob, S.
Yamada, R.
Yang, W. -C.
Yasuda, T.
Yatsunenko, Y. A.
Ye, Z.
Yin, H.
Yip, K.
Yoo, H. D.
Youn, S. W.
Yu, J.
Zelitch, S.
Zhao, T.
Zhou, B.
Zhu, J.
Zielinski, M.
Zieminska, D.
Zivkovic, L.
CA D0 Collaboration
TI Search for Sneutrino Production in e mu Final States in 5.3 fb(-1) of
p(p)over-bar Collisions at root s = 1.96 TeV
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID SUPERSYMMETRY
AB We report the results of a search for R parity violating (RPV) interactions leading to the production of supersymmetric sneutrinos decaying into e mu final states using 5.3 fb(-1) of integrated luminosity collected by the D0 experiment at the Fermilab Tevatron Collider. Having observed no evidence for production of e mu resonances, we set direct bounds on the RPV couplings lambda'(311) and lambda(312) as a function of sneutrino mass.
C1 [Abazov, V. M.; Alexeev, G. D.; Golovanov, G.; Kharzheev, Y. N.; Malyshev, V. L.; Tokmenin, V. V.; Vertogradov, L. S.; Yatsunenko, Y. A.] Joint Inst Nucl Res, Dubna, Russia.
[Otero y Garzon, G. J.; Piegaia, R.; Tanasijczuk, A.] Univ Buenos Aires, Buenos Aires, DF, Argentina.
[Alves, G. A.; Barreto, J.; Maciel, A. K. A.; Pol, M. -E.] Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil.
[Begalli, M.] Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil.
[Gregores, E. M.; Mercadante, P. G.] Univ Fed ABC, Santo Andre, Russia.
[Lietti, S. M.; Novaes, S. F.; Santos, A. S.] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil.
[Beale, S.; Liu, Z.; Taylor, W.] Simon Fraser Univ, Vancouver, BC, Canada.
[Beale, S.; Liu, Z.; Taylor, W.] York Univ, Toronto, ON M3J 2R7, Canada.
[Bu, X. B.; Ding, P. F.; Han, L.; Liu, Y.; Yin, H.] Univ Sci & Technol China, Hefei 230026, Peoples R China.
[Avila, C.; Negret, J. P.] Univ Los Andes, Bogota, Colombia.
[Kvita, J.; Soustruznik, K.] Charles Univ Prague, Fac Math & Phys, Ctr Particle Phys, Prague, Czech Republic.
[Hubacek, Z.; Hynek, V.; Simak, V.; Vokac, P.] Czech Tech Univ, CR-16635 Prague, Czech Republic.
[Kupco, A.; Lokajicek, M.] Acad Sci Czech Republic, Inst Phys, Ctr Particle Phys, Prague, Czech Republic.
[Hoeneisen, B.] Univ San Francisco Quito, Quito, Ecuador.
[Badaud, F.; Gay, P.; Gris, Ph.] Univ Clermont Ferrand, LPC, CNRS, IN2P3, Clermont, France.
[Arnoud, Y.; Sajot, G.; Stark, J.] Univ Grenoble 1, CNRS, LPSC, Inst Natl Polytech Grenoble,IN2P3, Grenoble, France.
[Calpas, B.; Cousinou, M. -C.; Duperrin, A.; Geng, W.; Jamin, D.; Kajfasz, E.; Kermiche, S.; Muanza, G. S.; Nagy, E.] Aix Marseille Univ, CPPM, CNRS, IN2P3, Marseille, France.
[Calvet, S.; Grivaz, J. -F.; Jaffre, M.; Petroff, P.; Rangel, M. S.] Univ Paris 11, CNRS, IN2P3, LAL, F-91405 Orsay, France.
[Bernardi, G.; Brown, D.; Brown, J.; Enari, Y.; Huske, N.; Lellouch, J.] Univ Paris 06, CNRS, LPNHE, IN2P3, Paris, France.
[Bernardi, G.; Brown, D.; Brown, J.; Enari, Y.; Huske, N.; Lellouch, J.] Univ Paris 07, CNRS, LPNHE, IN2P3, Paris, France.
[Bassler, U.; Besancon, M.; Chevalier-Thery, S.; Couderc, F.; Croc, A.; Deliot, F.; Grohsjean, A.; Madar, R.; Royon, C.; Shary, V.; Titov, M.; Tuchming, B.; Vilanova, D.] CEA, SPP, Saclay, France.
[Geist, W.; Greder, S.; Ripp-Baudot, I.] Univ Strasbourg, IPHC, CNRS, IN2P3, Strasbourg, France.
[Grenier, G.; Kurca, T.; Lebrun, P.; Verdier, P.] Univ Lyon 1, CNRS, IPNL, IN2P3, F-69622 Villeurbanne, France.
[Grenier, G.; Kurca, T.; Lebrun, P.; Verdier, P.] Univ Lyon, Lyon, France.
[Hebbeker, T.; Meyer, A.; Sonnenschein, L.] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany.
[Bernhard, R.; Nilsen, H.] Univ Freiburg, Inst Phys, Freiburg, Germany.
[Brandt, O.; Hensel, C.; Meyer, J.; Quadt, A.; Shabalina, E.] Univ Gottingen, Inst Phys 2, Gottingen, Germany.
[Buescher, V.; Fiedler, F.; Hohlfeld, M.; Wicke, D.] Johannes Gutenberg Univ Mainz, Inst Phys, D-6500 Mainz, Germany.
[Nunnemann, T.; Sanders, M. P.] Univ Munich, Munich, Germany.
[Schliephake, T.] Berg Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany.
[Beri, S. B.; Bhatnagar, V.; Dutt, S.; Joshi, J.; Kohli, J. M.] Panjab Univ, Chandigarh 160014, India.
[Choudhary, B.; Dubey, A.; Naimuddin, M.; Nayyar, R.; Ranjan, K.; Shivpuri, R. K.] Univ Delhi, Delhi 110007, India.
[Acharya, B. S.; Banerjee, S.; Mondal, N. K.] Tata Inst Fundamental Res, Mumbai 400005, Maharashtra, India.
[Cwiok, M.; Gruenewald, M. W.] Univ Coll Dublin, Dublin 2, Ireland.
[Cho, S. W.; Choi, S.; Lee, H. S.; Lim, J. K.; Park, S. K.] Korea Univ, Korea Detector Lab, Seoul, South Korea.
[Camacho-Perez, E.; Carrasco-Lizarraga, M. A.; Castilla-Valdez, H.; De La Cruz-Burelo, E.; Heredia-De La Cruz, I.; Luna-Garcia, R.; Magana-Villalba, R.; Martinez-Ortega, J.; Orduna, J.; Podesta-Lerma, P. L. M.; Sanchez-Hernandez, A.] CINVESTAV, Mexico City 14000, DF, Mexico.
[van Leeuwen, W. M.] FOM Inst NIKHEF, Amsterdam, Netherlands.
[van Leeuwen, W. M.] Univ Amsterdam NIKHEF, Amsterdam, Netherlands.
[Ancu, L. S.; de Jong, S. J.; Filthaut, F.; Meijer, M. M.; Svoisky, P.] Radboud Univ Nijmegen NIKHEF, Nijmegen, Netherlands.
[Gavrilov, V.; Polozov, P.; Safronov, G.; Stolin, V.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Boos, E. E.; Bunichev, V.; Dudko, L. V.; Karmanov, D.; Kuzmin, V. A.; Merkin, M.; Perfilov, M.] Moscow MV Lomonosov State Univ, Moscow, Russia.
[Bezzubov, V. A.; Denisov, S. P.; Evdokimov, V. N.; Kozelov, A. V.; Lipaev, V. V.; Popov, A. V.; Razumov, I.; Stoyanova, D. A.; Vasilyev, I. A.] Inst High Energy Phys, Protvino, Russia.
[Alkhazov, G.; Lobodenko, A.; Neustroev, P.; Obrant, G.; Scheglov, Y.; Uvarov, L.; Uvarov, S.] Petersburg Nucl Phys Inst, St Petersburg, Russia.
[Asman, B.; Belanger-Champagne, C.] Stockholm Univ, S-10691 Stockholm, Sweden.
[Asman, B.; Belanger-Champagne, C.] Uppsala Univ, Uppsala, Sweden.
[Bertram, I.; Borissov, G.; Burdin, S.; Fox, H.; Love, P.; Ratoff, P. N.; Sopczak, A.; Williams, M. R. J.] Univ Lancaster, Lancaster LA1 4YB, England.
[Beuselinck, R.; Buszello, C. P.; Christoudias, T.; Davies, G.; Hays, J.; Jesik, R.; Jonsson, P.; Osman, N.; Scanlon, T.; Vint, P.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
[Ding, P. F.; Harder, K.; Owen, M.; Peters, K.; Peters, Y.; Rich, P.; Schwanenberger, C.; Soeldner-Rembold, S.; Takahashi, M.; Vesterinen, M.; Wyatt, T. R.; Yang, W. -C.] Univ Manchester, Manchester M13 9PL, Lancs, England.
[Das, A.; Johns, K.; Varnes, E. W.] Univ Arizona, Tucson, AZ 85721 USA.
[Ellison, J.; Heinson, A. P.; Li, L.; Padilla, M.; Wimpenny, S. J.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Adams, T.; Askew, A.; Bandurin, D. V.; Blessing, S.; Carrera, E.; Hagopian, S.; Hoang, T.; Wahl, H. D.] Florida State Univ, Tallahassee, FL 32306 USA.
[Aoki, M.; Bagby, L.; Baldin, B.; Bartlett, J. F.; Bellantoni, L.; Bhat, P. C.; Boehnlein, A.; Bross, A.; Casey, B. C. K.; Cihangir, S.; Cooke, M.; Cooper, W. E.; Demarteau, M.; Denisov, D.; Desai, S.; Diehl, H. T.; Diesburg, M.; Elvira, V. D.; Fisk, H. E.; Fuess, S.; Ginther, G.; Greenlee, H.; Gruenendahl, S.; Gutierrez, G.; Illingworth, R.; Ito, A. S.; Johnson, M.; Jonckheere, A.; Juste, A.; Kasper, P. A.; Khalatyan, N.; Lee, W. M.; Li, Q. Z.; Lincoln, D.; Lipton, R.; Lyon, A. L.; Penning, B.; Podstavkov, V. M.; Rominsky, M.; Rubinov, P.; Sanghi, B.; Savage, G.; Sirotenko, V.; Stutte, L.; Verzocchi, M.; Weber, M.; Xie, Y.; Yamada, R.; Yasuda, T.; Ye, Z.; Youn, S. W.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Adams, M.; Gerber, C. E.; Strom, D.; Varelas, N.] Univ Illinois, Chicago, IL 60607 USA.
[Blazey, G.; Chakraborty, D.; Dyshkant, A.; Fortner, M.; Hedin, D.; Menezes, D.; Uzunyan, S.] No Illinois Univ, De Kalb, IL 60115 USA.
[Buchholz, D.; Kirby, M. H.; Schellman, H.; Yacoob, S.] Northwestern Univ, Evanston, IL 60208 USA.
[Evans, H.; Lammers, S.; Parua, N.; Price, D.; Van Kooten, R.; Zieminska, D.] Indiana Univ, Bloomington, IN 47405 USA.
[Parashar, N.] Purdue Univ Calumet, Hammond, IN 46323 USA.
[Chan, K. M.; Hildreth, M. D.; Osta, J.; Ruchti, R.; Smirnov, D.; Warchol, J.; Wayne, M.] Univ Notre Dame, Notre Dame, IN 46556 USA.
[Hauptman, J. M.; Lee, S. W.] Iowa State Univ, Ames, IA 50011 USA.
[Baringer, P.; Bean, A.; Chen, G.; Clutter, J.; McGivern, C. L.; Sekaric, J.; Wilson, G. W.] Univ Kansas, Lawrence, KS 66045 USA.
[Bolton, T. A.; Kaadze, K.; Maravin, Y.; Onoprienko, D.] Kansas State Univ, Manhattan, KS 66506 USA.
[Arov, M.; Greenwood, Z. D.; Sawyer, L.; Wobisch, M.] Louisiana Tech Univ, Ruston, LA 71272 USA.
[Eno, S.; Ferbel, T.; Wetstein, M.] Univ Maryland, College Pk, MD 20742 USA.
[Bose, T.] Boston Univ, Boston, MA 02215 USA.
[Alverson, G.; Barberis, E.; Facini, G.; Haley, J.; Hesketh, G.; Wood, D. R.] Northeastern Univ, Boston, MA 02115 USA.
[Alton, A.; Herner, K.; Neal, H. A.; Qian, J.; Xu, C.; Zhou, B.; Zhu, J.] Univ Michigan, Ann Arbor, MI 48109 USA.
[Abolins, M.; Benitez, J. A.; Brock, R.; Edmunds, D.; Fisher, W.; Geng, W.; Kraus, J.; Linnemann, J.; Piper, J.; Schwienhorst, R.] Michigan State Univ, E Lansing, MI 48824 USA.
[Melnitchouk, A.; Quinn, B.] Univ Mississippi, University, MS 38677 USA.
[Bloom, K.; Claes, D.; DeVaughan, K.; Dominguez, A.; Eads, M.; Johnston, D.; Katsanos, I.; Malik, S.; Snow, G. R.] Univ Nebraska, Lincoln, NE 68588 USA.
[Atramentov, O.; Duggan, D.; Gershtein, Y.] Rutgers State Univ, Piscataway, NJ 08855 USA.
[Gerbaudo, D.; Tully, C.] Princeton Univ, Princeton, NJ 08544 USA.
[Iashvili, I.; Jain, S.; Kharchilava, A.; Kumar, A.; Smith, K. J.] SUNY Buffalo, Buffalo, NY 14260 USA.
[Brooijmans, G.; Haas, A.; Parsons, J.; Tuts, P. M.; Zivkovic, L.] Columbia Univ, New York, NY 10027 USA.
[Demina, R.; Ferbel, T.; Garcia-Bellido, A.; Ginther, G.; Harel, A.; Petrillo, G.; Slattery, P.; Wang, M. H. L. S.; Zielinski, M.] Univ Rochester, Rochester, NY 14627 USA.
[Boline, D.; Chakrabarti, S.; Grannis, P. D.; Guo, F.; Guo, J.; Hobbs, J. D.; McCarthy, R.; Rijssenbeek, M.; Schamberger, R. D.; Strauss, E.; Tsybychev, D.] SUNY Stony Brook, Stony Brook, NY 11794 USA.
[Begel, M.; Evdokimov, A.; Gadfort, T.; Patwa, A.; Pleier, M. -A.; Protopopescu, S.; Snyder, S.; Yip, K.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Snow, J.] Langston Univ, Langston, OK 73050 USA.
[Abbott, B.; Gutierrez, P.; Hossain, S.; Severini, H.; Skubic, P.; Strauss, M.] Univ Oklahoma, Norman, OK 73019 USA.
[Hegab, H.; Khanov, A.; Rizatdinova, F.] Oklahoma State Univ, Stillwater, OK 74078 USA.
[Cho, D. K.; Cutts, D.; Ferapontov, A. V.; Heintz, U.; Jabeen, S.; Khatidze, D.; Landsberg, G.; Narain, M.; Pangilinan, M.; Parihar, V.; Partridge, R.; Yoo, H. D.] Brown Univ, Providence, RI 02912 USA.
[Brandt, A.; De, K.; Sosebee, M.; Spurlock, B.; White, A.; Yu, J.] Univ Texas Arlington, Arlington, TX 76019 USA.
[Kehoe, R.; Renkel, P.] So Methodist Univ, Dallas, TX 75275 USA.
[Chandra, A.; Corcoran, M.; Mackin, D.; Prewitt, M.] Rice Univ, Houston, TX 77005 USA.
[Buehler, M.; Hirosky, R.; Mulhearn, M.; Zelitch, S.] Univ Virginia, Charlottesville, VA 22901 USA.
[BackusMayes, J.; Burnett, T. H.; Dorland, T.; Goussiou, A.; Lubatti, H. J.; Schlobohm, S.; Shchukin, A. A.; Watts, G.; Zhao, T.] Univ Washington, Seattle, WA 98195 USA.
RP Abazov, VM (reprint author), Joint Inst Nucl Res, Dubna, Russia.
RI Li, Liang/O-1107-2015; Boos, Eduard/D-9748-2012; Mercadante,
Pedro/K-1918-2012; Alves, Gilvan/C-4007-2013; Deliot,
Frederic/F-3321-2014; Sharyy, Viatcheslav/F-9057-2014; Lokajicek,
Milos/G-7800-2014; Kupco, Alexander/G-9713-2014; Kozelov,
Alexander/J-3812-2014; Christoudias, Theodoros/E-7305-2015; Guo,
Jun/O-5202-2015; Bolton, Tim/A-7951-2012; Gerbaudo, Davide/J-4536-2012;
bu, xuebing/D-1121-2012; Merkin, Mikhail/D-6809-2012; Gutierrez,
Phillip/C-1161-2011; Perfilov, Maxim/E-1064-2012; Yip, Kin/D-6860-2013;
Wimpenny, Stephen/K-8848-2013; Santos, Angelo/K-5552-2012; Dudko,
Lev/D-7127-2012; Fisher, Wade/N-4491-2013; De, Kaushik/N-1953-2013;
Novaes, Sergio/D-3532-2012; Ancu, Lucian Stefan/F-1812-2010
OI Li, Liang/0000-0001-6411-6107; Sharyy, Viatcheslav/0000-0002-7161-2616;
Christoudias, Theodoros/0000-0001-9050-3880; Guo,
Jun/0000-0001-8125-9433; Gerbaudo, Davide/0000-0002-4463-0878; Yip,
Kin/0000-0002-8576-4311; Wimpenny, Stephen/0000-0003-0505-4908; Dudko,
Lev/0000-0002-4462-3192; De, Kaushik/0000-0002-5647-4489; Novaes,
Sergio/0000-0003-0471-8549; Ancu, Lucian Stefan/0000-0001-5068-6723
FU DOE; NSF (USA); CEA; CNRS/IN2P3 (France); FASI, Rosatom; RFBR (Russia);
CNPq; FAPERJ; FAPESP; FUNDUNESP (Brazil); DAE (India); DST (India);
Colciencias (Colombia); CONACyT (Mexico); KRF (Korea); KOSEF (Korea);
CONICET; UBACyT (Argentina); FOM (The Netherlands); STFC (United
Kingdom); Royal Society (United Kingdom); MSMT; GACR (Czech Republic);
CRC; NSERC (Canada); BMBF (Germany); DFG (Germany); SFI (Ireland);
Swedish Research Council (Sweden); CAS; CNSF (China)
FX We thank the staffs at Fermilab and collaborating institutions, and
acknowledge support from the DOE and NSF (USA); CEA and CNRS/IN2P3
(France); FASI, Rosatom and RFBR (Russia); CNPq, FAPERJ, FAPESP and
FUNDUNESP (Brazil); DAE and DST (India); Colciencias (Colombia); CONACyT
(Mexico); KRF and KOSEF (Korea); CONICET and UBACyT (Argentina); FOM
(The Netherlands); STFC and the Royal Society (United Kingdom); MSMT and
GACR (Czech Republic); CRC Program and NSERC (Canada); BMBF and DFG
(Germany); SFI (Ireland); The Swedish Research Council (Sweden); and CAS
and CNSF (China).
NR 20
TC 14
Z9 14
U1 4
U2 13
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 5
PY 2010
VL 105
IS 19
AR 191802
DI 10.1103/PhysRevLett.105.191802
PG 7
WC Physics, Multidisciplinary
SC Physics
GA 675RT
UT WOS:000283849300005
ER
PT J
AU Seidel, J
Maksymovych, P
Batra, Y
Katan, A
Yang, SY
He, Q
Baddorf, AP
Kalinin, SV
Yang, CH
Yang, JC
Chu, YH
Salje, EKH
Wormeester, H
Salmeron, M
Ramesh, R
AF Seidel, J.
Maksymovych, P.
Batra, Y.
Katan, A.
Yang, S. -Y.
He, Q.
Baddorf, A. P.
Kalinin, S. V.
Yang, C. -H.
Yang, J. -C.
Chu, Y. -H.
Salje, E. K. H.
Wormeester, H.
Salmeron, M.
Ramesh, R.
TI Domain Wall Conductivity in La-Doped BiFeO3
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID FERROELECTRIC-FILMS; BULK
AB The transport physics of domain wall conductivity in La-doped bismuth ferrite (BiFeO3) has been probed using variable temperature conducting atomic force microscopy and piezoresponse force microscopy in samples with arrays of domain walls in the as-grown state. Nanoscale current measurements are investigated as a function of bias and temperature and are shown to be consistent with distinct electronic properties at the domain walls leading to changes in the observed local conductivity. Our observation is well described within a band picture of the observed electronic conduction. Finally, we demonstrate an additional degree of control of the wall conductivity through chemical doping with oxygen vacancies, thus influencing the local conductive state.
C1 [Seidel, J.; He, Q.; Ramesh, R.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Seidel, J.; Katan, A.; Salmeron, M.; Ramesh, R.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Maksymovych, P.; Baddorf, A. P.; Kalinin, S. V.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
[Batra, Y.; Wormeester, H.] Univ Twente, MESA Res Inst, NL-7500 AE Enschede, Netherlands.
[Yang, S. -Y.; Ramesh, R.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Yang, C. -H.] Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea.
[Yang, J. -C.; Chu, Y. -H.] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu, Taiwan.
[Salje, E. K. H.] Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England.
[Salje, E. K. H.] Los Alamos Natl Lab, Los Alamos, NM 87544 USA.
RP Seidel, J (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RI Ying-Hao, Chu/A-4204-2008; He, Qing/E-3202-2010; Katan,
Allard/B-9670-2008; YANG, CHAN-HO/C-2079-2011; Kim, Yu Jin/A-2433-2012;
Kalinin, Sergei/I-9096-2012; Salje, Ekhard/M-2931-2013; Maksymovych,
Petro/C-3922-2016; Baddorf, Arthur/I-1308-2016
OI Ying-Hao, Chu/0000-0002-3435-9084; Katan, Allard/0000-0002-7185-6274;
Kalinin, Sergei/0000-0001-5354-6152; Salje, Ekhard/0000-0002-8781-6154;
Maksymovych, Petro/0000-0003-0822-8459; Baddorf,
Arthur/0000-0001-7023-2382
FU U.S. Department of Energy, Office of Science [DE-AC02-05CH1123]; Oak
Ridge National Laboratory by the Scientific User Facilities Division,
U.S. Department of Energy; Alexander von Humboldt Foundation
FX This research is supported by the U.S. Department of Energy, Office of
Science, under contract No. DE-AC02-05CH1123. A portion of this research
was conducted at the Center for Nanophase Materials Sciences, sponsored
at Oak Ridge National Laboratory by the Scientific User Facilities
Division, U.S. Department of Energy. J. S. acknowledges support from the
Alexander von Humboldt Foundation.
NR 22
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U1 19
U2 160
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 5
PY 2010
VL 105
IS 19
AR 197603
DI 10.1103/PhysRevLett.105.197603
PG 3
WC Physics, Multidisciplinary
SC Physics
GA 675RT
UT WOS:000283849300017
PM 21231197
ER
PT J
AU Zhu, JY
Liu, F
Stringfellow, GB
Wei, SH
AF Zhu, Junyi
Liu, Feng
Stringfellow, G. B.
Wei, Su-Huai
TI Strain-Enhanced Doping in Semiconductors: Effects of Dopant Size and
Charge State
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID AUGMENTED-WAVE METHOD; SOLUBILITY; SIGE; SET
AB When a semiconductor host is doped by a foreign element, it is inevitable that a volume change will occur in the doped system. This volume change depends on both the size and charge state difference between the dopant and the host element. Unlike the "common expectation'' that if the host is deformed to the same size as the dopant, then the formation energy of the dopant would reach a minimum, our first-principles calculations discovered that when an external hydrostatic strain is applied, the change of the impurity formation energy is monotonic: it decreases if the external hydrostatic strain is applied in the same direction as the volume change. This effect also exists when a biaxial strain is applied. A simple strain model is proposed to explain this unusual behavior, and we suggest that strain could be used to significantly improve the doping solubility in semiconductor systems.
C1 [Zhu, Junyi; Liu, Feng; Stringfellow, G. B.] Univ Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USA.
[Zhu, Junyi; Wei, Su-Huai] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Zhu, JY (reprint author), Univ Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USA.
FU DOE/OS/BES [DE-FG0204ER46148, DE-AC02-05CH11231, DE-AC36-08GO28308]
FX The authors thank Zheng Liu for useful discussions. The work at
University of Utah was supported by DOE/OS/BES under Grant No.
DE-FG0204ER46148. The calculations were performed on clusters at the
CHPC, University of Utah and at National Energy Research Scientific
Computing Center supported by the DOE/OS/BES under Grant No.
DE-AC02-05CH11231. The work at NREL was supported by the DOE/OS/BES
under Grant No. DE-AC36-08GO28308.
NR 19
TC 46
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U1 1
U2 31
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 5
PY 2010
VL 105
IS 19
AR 195503
DI 10.1103/PhysRevLett.105.195503
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 675RT
UT WOS:000283849300012
PM 21231183
ER
PT J
AU Mason, OU
Nakagawa, T
Rosner, M
Van Nostrand, JD
Zhou, JZ
Maruyama, A
Fisk, MR
Giovannoni, SJ
AF Mason, Olivia U.
Nakagawa, Tatsunori
Rosner, Martin
Van Nostrand, Joy D.
Zhou, Jizhong
Maruyama, Akihiko
Fisk, Martin R.
Giovannoni, Stephen J.
TI First Investigation of the Microbiology of the Deepest Layer of Ocean
Crust
SO PLOS ONE
LA English
DT Article
ID 16S RIBOSOMAL-RNA; MID-ATLANTIC RIDGE; CITY HYDROTHERMAL FIELD; GRADIENT
GEL-ELECTROPHORESIS; RALSTONIA-PICKETTII PKO1; SEA-FLOOR BASALT; SP-NOV;
METHYLOCOCCUS-CAPSULATUS; ALKANE HYDROXYLASE; SEQUENCE-ANALYSIS
AB The gabbroic layer comprises the majority of ocean crust. Opportunities to sample this expansive crustal environment are rare because of the technological demands of deep ocean drilling; thus, gabbroic microbial communities have not yet been studied. During the Integrated Ocean Drilling Program Expeditions 304 and 305, igneous rock samples were collected from 0.45-1391.01 meters below seafloor at Hole 1309D, located on the Atlantis Massif (30 degrees N, 42 degrees W). Microbial diversity in the rocks was analyzed by denaturing gradient gel electrophoresis and sequencing (Expedition 304), and terminal restriction fragment length polymorphism, cloning and sequencing, and functional gene microarray analysis (Expedition 305). The gabbroic microbial community was relatively depauperate, consisting of a low diversity of proteobacterial lineages closely related to Bacteria from hydrocarbon-dominated environments and to known hydrocarbon degraders, and there was little evidence of Archaea. Functional gene diversity in the gabbroic samples was analyzed with a microarray for metabolic genes ("GeoChip"), producing further evidence of genomic potential for hydrocarbon degradation - genes for aerobic methane and toluene oxidation. Genes coding for anaerobic respirations, such as nitrate reduction, sulfate reduction, and metal reduction, as well as genes for carbon fixation, nitrogen fixation, and ammonium-oxidation, were also present. Our results suggest that the gabbroic layer hosts a microbial community that can degrade hydrocarbons and fix carbon and nitrogen, and has the potential to employ a diversity of non-oxygen electron acceptors. This rare glimpse of the gabbroic ecosystem provides further support for the recent finding of hydrocarbons in deep ocean gabbro from Hole 1309D. It has been hypothesized that these hydrocarbons might originate abiotically from serpentinization reactions that are occurring deep in the Earth's crust, raising the possibility that the lithic microbial community reported here might utilize carbon sources produced independently of the surface biosphere.
C1 [Mason, Olivia U.; Fisk, Martin R.] Oregon State Univ, Coll Ocean & Atmospher Sci, Corvallis, OR 97331 USA.
[Nakagawa, Tatsunori] Tohoku Univ, Dept Earth Sci, Sendai, Miyagi 980, Japan.
[Rosner, Martin] Univ Bremen, Bremen, Germany.
[Van Nostrand, Joy D.; Zhou, Jizhong] Univ Oklahoma, Dept Bot & Microbiol, Inst Environm Genom, Norman, OK 73019 USA.
[Maruyama, Akihiko] Natl Inst Adv Ind Sci & Technol, Res Inst Biol Resources, Tsukuba, Japan.
[Giovannoni, Stephen J.] Oregon State Univ, Dept Microbiol, Corvallis, OR 97331 USA.
RP Mason, OU (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA.
EM steve.giovannoni@oregonstate.edu
RI Rosner, Martin/B-9264-2009; Van Nostrand, Joy/F-1740-2016
OI Van Nostrand, Joy/0000-0001-9548-6450
FU Joint Oceanographic Institutions award; Gordon and Betty Moore
Foundation; National Science Foundation IGERT; United States Department
of Energy under Virtual Institute of Microbial Stress and Survival of
the Office of Biological and Environmental Research, Office of Science
FX Funding: This work was supported by a Joint Oceanographic Institutions
award to M. R. Fisk, a Marine Microbiology Initiative Investigator Award
from the Gordon and Betty Moore Foundation to S. J. Giovannoni, and a
National Science Foundation IGERT Subsurface Biosphere Fellowship to O.
U. Mason. The GeoChip microarray analysis was supported in part by the
United States Department of Energy under the Genomics: GTL Program to J.
Z. Zhou through the Virtual Institute of Microbial Stress and Survival
(VIMSS; http://vimss.lbl.gov) of the Office of Biological and
Environmental Research, Office of Science. The funders had no role in
study design, data collection and analysis, decision to publish, or
preparation of the manuscript.
NR 72
TC 51
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U1 2
U2 50
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD NOV 5
PY 2010
VL 5
IS 11
AR e15399
DI 10.1371/journal.pone.0015399
PG 11
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 675OD
UT WOS:000283839100021
PM 21079766
ER
PT J
AU Reed, JP
Uchoa, B
Joe, YI
Gan, Y
Casa, D
Fradkin, E
Abbamonte, P
AF Reed, James P.
Uchoa, Bruno
Joe, Young Il
Gan, Yu
Casa, Diego
Fradkin, Eduardo
Abbamonte, Peter
TI The Effective Fine-Structure Constant of Freestanding Graphene Measured
in Graphite
SO SCIENCE
LA English
DT Article
ID DYNAMICS
AB Electrons in graphene behave like Dirac fermions, permitting phenomena from high-energy physics to be studied in a solid-state setting. A key question is whether or not these fermions are critically influenced by Coulomb correlations. We performed inelastic x-ray scattering experiments on crystals of graphite and applied reconstruction algorithms to image the dynamical screening of charge in a freestanding graphene sheet. We found that the polarizability of the Dirac fermions is amplified by excitonic effects, improving screening of interactions between quasiparticles. The strength of interactions is characterized by a scale-dependent, effective fine-structure constant, alpha*(g) (k, omega), the value of which approaches 0.14 +/- 0.092 similar to 1/7 at low energy and large distances. This value is substantially smaller than the nominal alpha(g) = 2.2, suggesting that, on the whole, graphene is more weakly interacting than previously believed.
C1 [Reed, James P.; Uchoa, Bruno; Joe, Young Il; Gan, Yu; Fradkin, Eduardo; Abbamonte, Peter] Univ Illinois, Dept Phys, Urbana, IL 61801 USA.
[Reed, James P.; Uchoa, Bruno; Joe, Young Il; Gan, Yu; Fradkin, Eduardo; Abbamonte, Peter] Univ Illinois, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA.
[Casa, Diego] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Abbamonte, P (reprint author), Univ Illinois, Dept Phys, 1110 W Green St, Urbana, IL 61801 USA.
EM abbamonte@mrl.uiuc.edu
RI Fradkin, Eduardo/B-5612-2013; Casa, Diego/F-9060-2016;
OI Fradkin, Eduardo/0000-0001-6837-463X
FU U.S. Department of Energy through the Frederick Seitz Materials Research
Laboratory [DE-FG02-07ER46459, DE-FG02-07ER46453, DEAC02-06CH11357]
FX We gratefully acknowledge helpful discussions with A. H. MacDonald, D.
Maslov, P. Guinea, L. Levitov, and A. J. Millis, and Y. Cai for
supplying graphite crystals. This work was supported by the U.S.
Department of Energy under grants DE-FG02-07ER46459 and
DE-FG02-07ER46453 through the Frederick Seitz Materials Research
Laboratory, with use of the Advanced Photon Source supported by
DEAC02-06CH11357.
NR 28
TC 64
Z9 64
U1 2
U2 56
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 0036-8075
J9 SCIENCE
JI Science
PD NOV 5
PY 2010
VL 330
IS 6005
BP 805
EP 808
DI 10.1126/science.1190920
PG 4
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 675SY
UT WOS:000283855700038
PM 21051634
ER
PT J
AU Vescovo, E
Mentes, TO
Sadowski, JT
Ablett, JM
Nino, MA
Locatelli, A
AF Vescovo, E.
Mentes, T. O.
Sadowski, J. T.
Ablett, J. M.
Nino, M. A.
Locatelli, A.
TI Domain faceting in an in-plane magnetic reorientation transition
SO PHYSICAL REVIEW B
LA English
DT Article
ID BORON-DOPED SILICON; 001 SURFACE; FE(110) FILMS; ANISOTROPIES
AB The microscopic structure of the 90 degrees in-plane magnetic reorientation transition in Fe(110) films is examined using photoemission x-ray microscopy. At the nanoscale, sharp magnetic boundaries are detected. They are indicative of a first-order transition and are consistent with Fe magnetic anisotropy constants. At the micron scale, the magnetic boundary breaks up into triangular patterns whose characteristic angular dependence is revealed by experiments on conical microwedges. This effect, fully accounted by micromagnetic simulations, opens the possibility to control the sharpness of the transition at the microscopic scale.
C1 [Vescovo, E.] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
[Mentes, T. O.; Nino, M. A.; Locatelli, A.] Sincrotrone Trieste SCpA, I-34149 Trieste, Italy.
[Mentes, T. O.; Nino, M. A.; Locatelli, A.] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
[Ablett, J. M.] Synchrotron Soleil, F-91192 Gif Sur Yvette, France.
RP Vescovo, E (reprint author), Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
RI Nino Orti, Miguel Angel/M-2571-2014
OI Sadowski, Jerzy/0000-0002-4365-7796; Mentes, Tevfik
Onur/0000-0003-0413-9272; Locatelli, Andrea/0000-0002-8072-7343; Nino
Orti, Miguel Angel/0000-0003-3692-147X
FU U.S. Department of Energy [DE-AC02-76CH00016]
FX NSLS is supported by the U.S. Department of Energy under Contract No.
DE-AC02-76CH00016.
NR 22
TC 3
Z9 3
U1 1
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 4
PY 2010
VL 82
IS 18
AR 184405
DI 10.1103/PhysRevB.82.184405
PG 4
WC Physics, Condensed Matter
SC Physics
GA 675OE
UT WOS:000283839200004
ER
PT J
AU Raskovic, M
Upadhyay, J
Vuskovic, L
Popovic, S
Valente-Feliciano, AM
Phillips, L
AF Raskovic, M.
Upadhyay, J.
Vuskovic, L.
Popovic, S.
Valente-Feliciano, A-M.
Phillips, L.
TI Plasma treatment of bulk niobium surface for superconducting rf
cavities: Optimization of the experimental conditions on flat samples
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
AB Accelerator performance, in particular the average accelerating field and the cavity quality factor, depends on the physical and chemical characteristics of the superconducting radio-frequency (SRF) cavity surface. Plasma based surface modification provides an excellent opportunity to eliminate nonsuperconductive pollutants in the penetration depth region and to remove the mechanically damaged surface layer, which improves the surface roughness. Here we show that the plasma treatment of bulk niobium (Nb) presents an alternative surface preparation method to the commonly used buffered chemical polishing and electropolishing methods. We have optimized the experimental conditions in the microwave glow discharge system and their influence on the Nb removal rate on flat samples. We have achieved an etching rate of 1.7 mu m/min using only 3% chlorine in the reactive mixture. Combining a fast etching step with a moderate one, we have improved the surface roughness without exposing the sample surface to the environment. We intend to apply the optimized experimental conditions to the preparation of single cell cavities, pursuing the improvement of their rf performance.
C1 [Raskovic, M.; Upadhyay, J.; Vuskovic, L.; Popovic, S.] Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA.
[Valente-Feliciano, A-M.; Phillips, L.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
RP Raskovic, M (reprint author), Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA.
EM vuskovic@odu.edu
FU NSF/DOE through the Office of High Energy Physics, Office of Science,
Department of Energy [DE-FG02-05ER41396]; Accelerator Division, Thomas
Jefferson National Accelerator Facility; Jefferson Science Associates,
LLC under U.S. DOE [DE-AC05-06OR23177]
FX This work is supported by the NSF/DOE collaborative effort through the
Office of High Energy Physics, Office of Science, Department of Energy
under Grant No. DE-FG02-05ER41396. M. Raskovic and J. Upadhyay
acknowledge the financial support from the Accelerator Division, Thomas
Jefferson National Accelerator Facility. We thank the Surface
Characterization Lab, College of William and Mary Applied Research
Center, and the ODU Applied Research Center for the use of various
diagnostics equipments. This paper was authored by the Jefferson Science
Associates, LLC under U.S. DOE Contract No. DE-AC05-06OR23177.
NR 8
TC 7
Z9 7
U1 1
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-4402
J9 PHYS REV SPEC TOP-AC
JI Phys. Rev. Spec. Top.-Accel. Beams
PD NOV 4
PY 2010
VL 13
IS 11
AR 112001
DI 10.1103/PhysRevSTAB.13.112001
PG 7
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 675RY
UT WOS:000283850000001
ER
PT J
AU Teschendorff, AE
Gomez, S
Arenas, A
El-Ashry, D
Schmidt, M
Gehrmann, M
Caldas, C
AF Teschendorff, Andrew E.
Gomez, Sergio
Arenas, Alex
El-Ashry, Dorraya
Schmidt, Marcus
Gehrmann, Mathias
Caldas, Carlos
TI Improved prognostic classification of breast cancer defined by
antagonistic activation patterns of immune response pathway modules
SO BMC CANCER
LA English
DT Article
ID GENE-EXPRESSION PROFILES; MOLECULAR SUBTYPES; METASTASIS; SIGNATURE;
IDENTIFICATION; CARCINOMAS; NETWORKS; SURVIVAL; TARGETS; PROTEIN
AB Background: Elucidating the activation pattern of molecular pathways across a given tumour type is a key challenge necessary for understanding the heterogeneity in clinical response and for developing novel more effective therapies. Gene expression signatures of molecular pathway activation derived from perturbation experiments in model systems as well as structural models of molecular interactions ("model signatures") constitute an important resource for estimating corresponding activation levels in tumours. However, relatively few strategies for estimating pathway activity from such model signatures exist and only few studies have used activation patterns of pathways to refine molecular classifications of cancer.
Methods: Here we propose a novel network-based method for estimating pathway activation in tumours from model signatures. We find that although the pathway networks inferred from cancer expression data are highly consistent with the prior information contained in the model signatures, that they also exhibit a highly modular structure and that estimation of pathway activity is dependent on this modular structure. We apply our methodology to a panel of 438 estrogen receptor negative (ER-) and 785 estrogen receptor positive (ER+) breast cancers to infer activation patterns of important cancer related molecular pathways.
Results: We show that in ER negative basal and HER2+ breast cancer, gene expression modules reflecting T-cell helper-1 (Th1) and T-cell helper-2 (Th2) mediated immune responses play antagonistic roles as major risk factors for distant metastasis. Using Boolean interaction Cox-regression models to identify non-linear pathway combinations associated with clinical outcome, we show that simultaneous high activation of Th1 and low activation of a TGF-beta pathway module defines a subtype of particularly good prognosis and that this classification provides a better prognostic model than those based on the individual pathways. In ER+ breast cancer, we find that simultaneous high MYC and RAS activity confers significantly worse prognosis than either high MYC or high RAS activity alone. We further validate these novel prognostic classifications in independent sets of 173 ER-and 567 ER + breast cancers.
Conclusion: We have proposed a novel method for pathway activity estimation in tumours and have shown that pathway modules antagonize or synergize to delineate novel prognostic subtypes. Specifically, our results suggest that simultaneous modulation of T-helper differentiation and TGF-beta pathways may improve clinical outcome of hormone insensitive breast cancers over treatments that target only one of these pathways.
C1 [Teschendorff, Andrew E.; Caldas, Carlos] Univ Cambridge, Li Ka Shing Ctr, Canc Res UK Cambridge Res Inst, Breast Canc Funct Genom Lab, Cambridge CB2 0RE, England.
[Teschendorff, Andrew E.; Caldas, Carlos] Univ Cambridge, Li Ka Shing Ctr, Dept Oncol, Cambridge CB2 0RE, England.
[Gomez, Sergio; Arenas, Alex] Univ Rovira & Virgili, Dept Enginyeria Informat & Matemat, Tarragona 43007, Spain.
[Arenas, Alex] Univ Zaragoza, Inst Biocomputat & Phys Complex Syst BIFI, E-50009 Zaragoza, Spain.
[Arenas, Alex] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[El-Ashry, Dorraya] Univ Miami, Miller Sch Med, Sylvester Comprehens Canc Ctr, Miami, FL 33136 USA.
[El-Ashry, Dorraya] Univ Miami, Miller Sch Med, Braman Family Breast Canc Inst, Miami, FL 33136 USA.
[Schmidt, Marcus] Johannes Gutenberg Univ Mainz, Sch Med, Dept Obstet & Gynecol, D-55131 Mainz, Germany.
[Gehrmann, Mathias] Siemens Med Solut Diagnost GmbH, D-50829 Cologne, Germany.
[Teschendorff, Andrew E.] UCL, UCL Canc Inst, Med Genom Grp, London WC1E 6BT, England.
RP Teschendorff, AE (reprint author), Univ Cambridge, Li Ka Shing Ctr, Canc Res UK Cambridge Res Inst, Breast Canc Funct Genom Lab, Robinson Way, Cambridge CB2 0RE, England.
EM a.teschendorff@ucl.ac.uk
RI Gomez, Sergio/B-2113-2010; Caldas, Carlos/A-7543-2008; Arenas,
Alex/A-5216-2009; Schmidt, Marcus/H-3383-2013
OI Gomez, Sergio/0000-0003-1820-0062; Arenas, Alex/0000-0003-0937-0334;
Schmidt, Marcus/0000-0003-1365-2414
FU Cancer Research UK; Heller Research Fellowship; Spanish Ministry of
Science and Technology [FIS2006-13321-C02-02]
FX This research was supported by a grant from Cancer Research UK (AET &
CC) and the Heller Research Fellowship (AET). SG and AA acknowledge
support by Spanish Ministry of Science and Technology Grant
FIS2006-13321-C02-02. We wish to thank Chad Creighton for making data
available to us, Martin Widschwendter and Florian Markowetz for
discussions. We also wish to thank Bin Liu and Mark Calleja for managing
the Oncology cluster and CamGrid, which were used for some of the
computations in the present paper.
NR 60
TC 44
Z9 46
U1 0
U2 3
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1471-2407
J9 BMC CANCER
JI BMC Cancer
PD NOV 4
PY 2010
VL 10
AR 604
DI 10.1186/1471-2407-10-604
PG 20
WC Oncology
SC Oncology
GA 684UF
UT WOS:000284575500001
PM 21050467
ER
PT J
AU Dang, NC
Dreger, ZA
Gupta, YM
Hooks, DE
AF Dang, Nhan C.
Dreger, Zbigniew A.
Gupta, Yogendra M.
Hooks, Daniel E.
TI Time-Resolved Spectroscopic Measurements of Shock-Wave Induced
Decomposition in Cyclotrimethylene Trinitramine (RDX) Crystals:
Anisotropic Response
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID TETRANITRATE SINGLE-CRYSTALS; PENTAERYTHRITOL TETRANITRATE; INITIATION;
SENSITIVITY; ORIENTATION; CHEMISTRY
AB Plate impact experiments on the (210), (100), and (111) planes were performed to examine the role of crystalline anisotropy on the shock-induced decomposition of cyclotrimethylenetrinitramine (RDX) crystals. Time-resolved emission spectroscopy was used to probe the decomposition of single crystals shocked to peak stresses ranging between 7 and 20 GPa. Emission produced by decomposition intermediates was analyzed in terms of induction time to emission, emission intensity, and the emission spectra shapes as a function of stress and time. Utilizing these features, we found that the shock-induced decomposition of RDX crystals exhibits considerable anisotropy. Crystals shocked on the (210) and (100) planes were more sensitive to decomposition than crystals shocked on the (111) plane. The possible sources of the observed anisotropy are discussed with regard to the inelastic deformation mechanisms of shocked RDX. Our results suggest that, despite the anisotropy observed for shock initiation, decomposition pathways for all three orientations are similar.
C1 [Dang, Nhan C.; Dreger, Zbigniew A.; Gupta, Yogendra M.] Washington State Univ, Inst Shock Phys, Pullman, WA 99164 USA.
[Dang, Nhan C.; Dreger, Zbigniew A.; Gupta, Yogendra M.] Washington State Univ, Dept Phys, Pullman, WA 99164 USA.
[Hooks, Daniel E.] Los Alamos Natl Lab, Dynam & Energet Mat Div, Los Alamos, NM 87545 USA.
RP Dreger, ZA (reprint author), Washington State Univ, Inst Shock Phys, Pullman, WA 99164 USA.
EM dreger@wsu.edu
FU ONR MURI [N00014-06-1-0459]; DOE [DEFG0397SF21388]
FX We thank Dr. J. M. Willey for useful discussions and for helpful
comments regarding the manuscript. K. Zimmerman, K. Perkins, and C.
Bakeman are thanked for their assistance in performing the shock
experiments. This work was supported by ONR MURI Grant N00014-06-1-0459
and DOE Grant DEFG0397SF21388.
NR 23
TC 19
Z9 19
U1 1
U2 15
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD NOV 4
PY 2010
VL 114
IS 43
BP 11560
EP 11566
DI 10.1021/jp106892c
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 671AO
UT WOS:000283471900024
PM 20929273
ER
PT J
AU Teague, CM
Dai, S
Jiang, DE
AF Teague, Craig M.
Dai, Sheng
Jiang, De-en
TI Computational Investigation of Reactive to Nonreactive Capture of Carbon
Dioxide by Oxygen-Containing Lewis Bases
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID IONIC LIQUIDS; BASIS-SETS; POPULATION ANALYSIS; CORRELATION-ENERGY; CO2
ABSORPTION; DENSITY; APPROXIMATION; PERFORMANCE; SOLUBILITY; SIMULATION
AB Recent work has shown that room temperature ionic liquid systems reactively absorb CO(2) and offer distinct advantages over current CO(2) capture technologies. Here we computationally evaluated CO(2) interaction energies with a series of oxygen-containing Lewis base anions (including cyclohexanolate and phenolate and their respective derivatives). Our results show that the interaction energy can be tuned across a range from reactive to nonreactive (or physical) interactions. We evaluated different levels of theory as well as possible corrections to the interaction energy, and we explained our calculated trends on the basis of properties of the individual anions. We found that the interaction energy between CO(2) and the Lewis bases examined here correlates most strongly with the atomic charge on the oxygen atom. This insight provides a useful handle to tune the anion-CO(2) interaction energy for future experimental and computational studies of novel CO(2) capture systems.
C1 [Teague, Craig M.] Cornell Coll, Dept Chem, Mt Vernon, IA 52314 USA.
[Teague, Craig M.; Dai, Sheng; Jiang, De-en] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
[Dai, Sheng] Univ Tennessee, Dept Chem, Knoxville, TN 37966 USA.
RP Teague, CM (reprint author), Cornell Coll, Dept Chem, Mt Vernon, IA 52314 USA.
EM cteague@cornellcollege.edu; jiangd@ornl.gov
RI Jiang, De-en/D-9529-2011; Dai, Sheng/K-8411-2015
OI Jiang, De-en/0000-0001-5167-0731; Dai, Sheng/0000-0002-8046-3931
FU Division of Chemical Sciences, Geosciences, and Biosciences, Office of
Basic Energy Sciences, U.S. Department of Energy; Cornell College
FX This work was supported by the Division of Chemical Sciences,
Geosciences, and Biosciences, Office of Basic Energy Sciences, U.S.
Department of Energy. C.M.T. gratefully acknowledges a Campbell R.
McConnell Sabbatical Fellowship from Cornell College and the assistance
of both the Oak Ridge Science Semester administered by Denison
University and the U.S. Department of Energy Higher Education Research
Experiences for Faculty at Oak Ridge National Laboratory administered by
the Oak Ridge Institute for Science and Education. We thank Ms. Fengyu
Li for assistance with one of the figures.
NR 45
TC 29
Z9 29
U1 1
U2 24
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD NOV 4
PY 2010
VL 114
IS 43
BP 11761
EP 11767
DI 10.1021/jp1056072
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 671AO
UT WOS:000283471900047
PM 20942501
ER
PT J
AU Xie, HB
Zhou, YZ
Zhang, YK
Johnson, JK
AF Xie, Hong-Bin
Zhou, Yanzi
Zhang, Yingkai
Johnson, J. Karl
TI Reaction Mechanism of Monoethanolamine with CO2 in Aqueous Solution from
Molecular Modeling
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID DIMETHYL-SULFOXIDE SOLUTIONS; POLARIZABLE CONTINUUM MODEL; HISTOGRAM
ANALYSIS METHOD; VAPOR-LIQUID-EQUILIBRIUM; FREE-ENERGY CALCULATIONS;
AB-INITIO; DYNAMICS SIMULATIONS; CARBON-DIOXIDE; CARBAMATE FORMATION;
CHEMICAL-REACTIONS
AB We present a theoretical study of the reaction mechanism of monoethanolamine (MEA) with CO, in an aqueous solution. We have used molecular orbital reaction pathway calculations to compute reaction free energy landscapes for the reaction steps involved in the formation of carbamic acids and carbamates. We have used the conductor-like polarizable continuum model to calculate reactant, product, and transition state geometries and vibrational frequencies within density functional theory (DFT). We have also computed single point energies for all stationary structures using a coupled cluster approach with singles, doubles, and perturbational triple excitations using the DFT geometries. Our calculations indicate that a two-step reaction mechanism that proceeds via a zwitterion intermediate to form carbamate is the most favorable reaction channel. The first step, leading to formation of the zwitterion, is found to be rate-determining, and the activation free energies are 12.0 (10.2) and 11.3 (9.6) kcal/mol using Pauling (Bondi) radii within the CPCM model at the CCSD(T)/6-311++G(d,p) and CCSD(T)/6-311++G(2df,2p) levels of theory, respectively, using geometries and vibrational frequencies obtained at the B3LYP/6-311++G(d,p) level of theory. These results are in reasonable agreement with the experimental value of about 12 kcal/mol. The second step is an acid base reaction between a zwitterion and MEA. We have developed a microkinetic model to estimate the effective reaction order at intermediate concentrations. Our model predicts an equilibrium concentration for the zwitterion on the order of 10(-11) mol/L, which explains why the existence of the zwitterion intermediate has never been detected experimentally. The effective reaction order from our model is close to unity, also in agreement with experiments. Complementary ab initio QM/MM molecular dynamics simulations with umbrella sampling have been carried out to determine the free energy profiles of zwitterion formation and proton transfer in solution; the results confirm that the formation of the zwitterion is rate-determining.
C1 [Zhou, Yanzi; Zhang, Yingkai] NYU, Dept Chem, New York, NY 10003 USA.
[Xie, Hong-Bin; Johnson, J. Karl] Univ Pittsburgh, Dept Chem & Petr Engn, Pittsburgh, PA 15261 USA.
[Xie, Hong-Bin; Johnson, J. Karl] Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
RP Zhang, YK (reprint author), NYU, Dept Chem, New York, NY 10003 USA.
EM yingkai.zhang@nyu.edu; karlj@pitt.edu
RI Zhang, Yingkai/A-3173-2008; Johnson, Karl/E-9733-2013; Xie, Hong-Bin
/N-9886-2016
OI Zhang, Yingkai/0000-0002-4984-3354; Johnson, Karl/0000-0002-3608-8003;
FU Department of Energy, National Energy Technology Laboratory
[DE-NT0005310]; National Energy Technology Laboratory
[DE-AC26-04NT41817]; NSF [CHE-CAREER-0448156]; agency of the United
States Government
FX This material is based upon work supported by the Department of Energy,
National Energy Technology Laboratory under Award Number DE-NT0005310.
Most of the calculations were performed at the University of
Pittsburgh's Center for Simulation and Modeling. This work was performed
in support of the National Energy Technology Laboratory's ongoing
research in the area of carbon management under the RDS contract
DE-AC26-04NT41817. Y.Z. would like to acknowledge the support by NSF
(CHE-CAREER-0448156, and TeraGrid computing resources) and NYU-ITS
(computing resources). This report was prepared as an account of work
sponsored by an agency of the United States Government. Neither the
United States Government nor any agency thereof, nor any of their
employees, makes any warranty, express or implied, or assumes any legal
liability or responsibility for the accuracy, completeness, or
usefulness of any information, apparatus, product, or process disclosed,
or represents that its use would not infringe privately owned rights.
Reference herein to any specific commercial product, process, or service
by trade name, trademark, manufacturer, or otherwise does not
necessarily constitute or imply its endorsement, recommendation, or
favoring by the United States Government or any agency thereof. The
views and opinions of authors expressed herein do not necessarily state
or reflect those of the United States Government or any agency thereof.
NR 58
TC 54
Z9 57
U1 1
U2 46
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD NOV 4
PY 2010
VL 114
IS 43
BP 11844
EP 11852
DI 10.1021/jp107516k
PG 9
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 671AO
UT WOS:000283471900058
PM 20939618
ER
PT J
AU Devanathan, R
Venkatnathan, A
Rousseau, R
Dupuis, M
Frigato, T
Gu, W
Helms, V
AF Devanathan, Ram
Venkatnathan, Arun
Rousseau, Roger
Dupuis, Michel
Frigato, Tomaso
Gu, Wei
Helms, Volkhard
TI Atomistic Simulation of Water Percolation and Proton Hopping in Nation
Fuel Cell Membrane
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID MOLECULAR-DYNAMICS SIMULATIONS; POLYMER ELECTROLYTE MEMBRANES; EXCHANGE
MEMBRANES; TRANSPORT-PROPERTIES; NAFION MEMBRANES; FORCE-FIELD;
ACETIC-ACID; AB-INITIO; STATE; HYDRATION
AB We have performed a detailed analysis of water clustering and percolation in hydrated Nafion configurations generated by classical molecular dynamics simulations. Our results show that at low hydration levels H(2)O molecules are isolated and a continuous hydrogen-bonded network forms as the hydration level is increased. Our quantitative analysis has established a hydration level (lambda) between 5 and 6 H(2)O/SO(3)(-) as the percolation threshold of Nation. We have also examined the effect of such a network on proton transport by studying the structural diffusion of protons using the quantum hopping molecular dynamics method. The mean residence time of the proton on a water molecule decreases by 2 orders of magnitude when the lambda value is increased from 5 to 15. The proton diffusion coefficient in Nation at a lambda value of 15 is about 1.1 x 10(-5) cm(2)/s in agreement with experiment. The results provide quantitative atomic-level evidence of water network percolation in Nafion and its effect on proton conductivity.
C1 [Devanathan, Ram; Rousseau, Roger; Dupuis, Michel] Pacific NW Natl Lab, Div Chem & Mat Sci, Richland, WA 99352 USA.
[Venkatnathan, Arun] Indian Inst Sci Educ & Res, Dept Chem, Pune 411021, Maharashtra, India.
[Frigato, Tomaso] Free Univ Berlin, Inst Math, D-14195 Berlin, Germany.
[Gu, Wei; Helms, Volkhard] Univ Saarland, Ctr Bioinformat, D-66041 Saarbrucken, Germany.
RP Devanathan, R (reprint author), Pacific NW Natl Lab, Div Chem & Mat Sci, MS K2-01, Richland, WA 99352 USA.
EM ram.devanathan@pnl.gov
RI Gu, Wei/G-4003-2010; Devanathan, Ram/C-7247-2008; Rousseau,
Roger/C-3703-2014
OI Gu, Wei/0000-0003-3951-6680; Devanathan, Ram/0000-0001-8125-4237;
FU U.S. Department of Energy's (DOE) Office of Basic Energy Sciences,
Chemical Sciences, Geosciences and Biosciences Division
[DE-AC05-76RL01830]; Office of Science of DOE [DE-AC02-05CH1123]; DFG
FX This work was supported by the U.S. Department of Energy's (DOE) Office
of Basic Energy Sciences, Chemical Sciences, Geosciences and Biosciences
Division, under Contract DE-AC05-76RL01830. It was performed in part
using the Molecular Science Computing Facility (MSCF) in the EMSL, a
national scientific user facility sponsored by DOE's Office of
Biological and Environmental Research located at Pacific Northwest
National Laboratory (PNNL). PNNL is operated by Battelle for DOE. This
work benefited from resources of the National Energy Research Scientific
Computing Center, which is supported by the Office of Science of DOE
under Contract No. DE-AC02-05CH1123. This work also used computing
resources provided by the Chemical & Materials Sciences Division at
PNNL. VH and WG thank DFG for funding the development of the Q-HOP
method.
NR 59
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Z9 64
U1 4
U2 26
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD NOV 4
PY 2010
VL 114
IS 43
BP 13681
EP 13690
DI 10.1021/jp103398b
PG 10
WC Chemistry, Physical
SC Chemistry
GA 671PQ
UT WOS:000283519600009
PM 20860379
ER
PT J
AU Heller, WT
O'Neill, HM
Zhang, Q
Baker, GA
AF Heller, William T.
O'Neill, Hugh M.
Zhang, Qiu
Baker, Gary A.
TI Characterization of the Influence of the Ionic Liquid
1-Butyl-3-methylimidazolium Chloride on the Structure and Thermal
Stability of Green Fluorescent Protein
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID ANGLE NEUTRON-SCATTERING; D,L-P-HYDROXYPHENYLGLYCINE METHYL-ESTER;
X-RAY-SCATTERING; HORSERADISH-PEROXIDASE; ALPHA-CHYMOTRYPSIN;
AQUEOUS-SOLUTIONS; CYTOCHROME-C; ENHANCED ENANTIOSELECTIVITY; BIODIESEL
PRODUCTION; WATER ACTIVITY
AB Ionic liquids (ILs) are finding a vast array of applications as novel solvents for a wide variety of processes that include enzymatic chemistry, particularly as more biocompatible ILs are designed and discovered. While it is assumed that a native or near-native structure is required for enzymatic activity, there is some evidence that ILs alter protein structure and oligomerization states in a manner than can negatively impact function. The IL 1-butyl-3-methylimidazolium chloride, [bmim]Cl, is a well-studied, water-miscible member of the popular 1-alkyl-3-methylimidazolium IL family. To improve our understanding of the impact of water-miscible ILs on proteins, we have characterized the structure and oligomerization state of green fluorescent protein (GFP) in aqueous solutions containing 25 and 50 vol % [bmim]Cl using a combination of optical spectroscopy and small-angle neutron scattering (SANS). Measurements were also performed as a function of temperature to provide insight into the effect of the IL on the thermal stability of GFP. While GFP exists as a dimer in water, the presence of 25 vol % [bmim]Cl causes GIP to transition to a monomeric state. The SANS data indicate that GFP is a great deal less compact in 50 vol % [bmim]Cl than in neat water, indicative of unfolding from the native structure. The oligomerization state of the protein in IL-containing aqueous solution changes from a dimer to a monomer in response to the IL, but does not change as a function of temperature in the IL-containing solution. The SANS and spectroscopic results also demonstrate that the addition of [bmim]Cl to the solution decreases the thermal stability of GFP, allowing the protein to unfold at lower temperatures than in aqueous solution.
C1 [Heller, William T.; O'Neill, Hugh M.; Zhang, Qiu; Baker, Gary A.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
[Heller, William T.; O'Neill, Hugh M.; Zhang, Qiu] Oak Ridge Natl Lab, Ctr Struct Mol Biol, Oak Ridge, TN 37831 USA.
RP Heller, WT (reprint author), Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
EM hellerwt@ornl.gov
RI Zhang, Qiu/D-1501-2016; Baker, Gary/H-9444-2016;
OI Zhang, Qiu/0000-0002-5506-4955; Baker, Gary/0000-0002-3052-7730;
O'Neill, Hugh/0000-0003-2966-5527
FU Office of Biological and Environmental Research [ERKP291]; U.S.
Department of Energy [DE-AC05-00OR22725]; Presidential Early Career
Award for Scientists and Engineers (PECASE)
FX This research at Oak Ridge National Laboratory's Center for Structural
Molecular Biology (Project ERKP291) was supported by the Office of
Biological and Environmental Research, using facilities supported by the
U.S. Department of Energy, managed by UT-Battelle, LLC under contract
No. DE-AC05-00OR22725. G.A.B. acknowledges a Presidential Early Career
Award for Scientists and Engineers (PECASE) for partial support of this
work.
NR 85
TC 43
Z9 43
U1 2
U2 32
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD NOV 4
PY 2010
VL 114
IS 43
BP 13866
EP 13871
DI 10.1021/jp105611b
PG 6
WC Chemistry, Physical
SC Chemistry
GA 671PQ
UT WOS:000283519600030
PM 20919721
ER
PT J
AU Baker, L
Holsclaw, B
Baber, AE
Tierney, HL
Sykes, ECH
Gellman, AJ
AF Baker, Layton
Holsclaw, Brian
Baber, Ashleigh E.
Tierney, Heather L.
Sykes, E. Charles H.
Gellman, Andrew J.
TI Adsorption Site Distributions on Cu(111), Cu(221), and Cu(643) as
Determined by Xe Adsorption
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID SCANNING TUNNELING MICROSCOPE; CHIRAL PLATINUM SURFACES; ADSORBED XENON
PAX; METAL-SURFACES; ENANTIOSPECIFIC DESORPTION; PHOTOEMISSION; STEP;
CU(643)(R-AND-S); REACTIVITY; DYNAMICS
AB Xe has been used to probe the distributions of adsorption sites across three different Cu single-crystal surfaces: Cu(111), Cu(221), and Cu(643). These expose terrace, step, and kink sites, respectively. The study couples the use of scanning tunneling microscopy (STM), temperature-programmed desorption (TPD), and photo-emission of adsorbed Xe (PAX) to assess their use as methods for determining adsorption site distributions on Cu surfaces. STM shows that the Xe adsorption sites in order of energetic preference are kink, step edge, and terrace, but indicates that the binding energy differences between the three are likely very small. This is borne out by Xe TPD studies that show distinct differences in the desorption kinetics on the three surfaces but unresolvable differences in the desorption temperatures and binding energies at the terrace, step, and kink sites. PAX spectra reveal observable features that can be associated with Xe adsorption at terrace, step, and kink sites. These features can be analyzed semiquantitatively to give insight into the distributions of sites on these surfaces.
C1 [Baker, Layton; Holsclaw, Brian; Gellman, Andrew J.] Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA.
[Baber, Ashleigh E.; Tierney, Heather L.; Sykes, E. Charles H.] Tufts Univ, Dept Chem, Medford, MA 02155 USA.
[Gellman, Andrew J.] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
RP Gellman, AJ (reprint author), Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA.
EM gellman@emu.edu
RI Gellman, Andrew/M-2487-2014;
OI Gellman, Andrew/0000-0001-6618-7427; Holsclaw, Brian/0000-0002-7501-8411
FU NSF [CHE0717978, CHE 1012307]; American Chemical Society [45256-G5];
GAANN
FX All of the authors thank the NSF (CHE0717978 and CHE 1012307) for
support of this research. A.E.B., and E.C.H.S. thank the donors of the
American Chemical Society Petroleum Research Fund for additional support
(Grant 45256-G5). A.E.B. thanks GAANN for the sponsorship of a one-year
fellowship. We also thank Prof. K. Wandelt for a very helpful
discussion.
NR 51
TC 3
Z9 3
U1 1
U2 28
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD NOV 4
PY 2010
VL 114
IS 43
BP 18566
EP 18575
DI 10.1021/jp106489f
PG 10
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 671PP
UT WOS:000283519400038
ER
PT J
AU Crumlin, EJ
Mutoro, E
Ahn, SJ
la O', GJ
Leonard, DN
Borisevich, A
Biegalski, MD
Christen, HM
Shao-Horn, Y
AF Crumlin, Ethan J.
Mutoro, Eva
Ahn, Sung-Jin
la O', Gerardo Jose
Leonard, Donovan N.
Borisevich, Albina
Biegalski, Michael D.
Christen, Hans M.
Shao-Horn, Yang
TI Oxygen Reduction Kinetics Enhancement on a Heterostructured Oxide
Surface for Solid Oxide Fuel Cells
SO JOURNAL OF PHYSICAL CHEMISTRY LETTERS
LA English
DT Article
ID DOPED LAMNO3 MICROELECTRODES; THIN-FILM MICROELECTRODES;
LA1-XSRXMN1-YCOYO3+/-DELTA PEROVSKITES; GEOMETRY DEPENDENCE;
IONIC-CONDUCTIVITY; POLARIZATION; EXCHANGE; CATHODE; TRANSPORT;
(LA,SR)COO3/(LA,SR)(2)COO4
AB Heterostructured interfaces of oxides which can exhibit transport and reactivity characteristics remarkably different from those of bulk oxides, are interesting systems to explore in search of highly active cathodes for the oxygen reduction reaction (ORR). Here we show that the ORR of similar to 85 nm thick La0.8Sr0.2-CoO3-delta (LSC113) films prepared by pulsed laser deposition on (001)-oriented yttria-stabilized zirconia (YSZ) substrates is dramatically enhanced (similar to 3-4 orders of magnitude above bulk LSC113) by surface decorations of (La0.5Sr0.5)(2)CoO4 +/-delta (LSC214) with coverage in the range from similar to 0.1 to similar to 15 nm. Their surface and atomic structures were characterized by atomic force scanning electron and scanning transmission electron microscopy and the ORR kinetics were determined by electrochemical impedance spectroscopy. Although the mechanism for ORR enhancement is not yet fully understood our results to date show that the observed ORR enhancement can be attributed to highly active interfacial LSC113/LSC214 regions, which were shown to be atomically sharp.
C1 [Crumlin, Ethan J.; Mutoro, Eva; Ahn, Sung-Jin; la O', Gerardo Jose; Shao-Horn, Yang] MIT, Electrochem Energy Lab, Cambridge, MA 02139 USA.
[Leonard, Donovan N.; Borisevich, Albina] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
[Biegalski, Michael D.; Christen, Hans M.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
RP Shao-Horn, Y (reprint author), MIT, Electrochem Energy Lab, 77 Massachusetts Ave, Cambridge, MA 02139 USA.
EM shaohorn@mit.edu
RI Christen, Hans/H-6551-2013; Borisevich, Albina/B-1624-2009
OI Christen, Hans/0000-0001-8187-7469; Borisevich,
Albina/0000-0002-3953-8460
FU NSF [CBET 08-44526]; DOE [SISGR DE-SC0002633]; King Abdullah University
of Science and Technology; German Research Foundation; Scientific User
Facilities Division, Office of Basic Energy Sciences, U.S. DOE;
Materials Sciences and Engineering Division, Office of Basic Energy
Sciences of the U.S. DOE
FX This work was supported in part by the NSF (CBET 08-44526), DOE (SISGR
DE-SC0002633), and King Abdullah University of Science and Technology.
E.M. is grateful for financial support from the German Research
Foundation (research scholarship). The portion of research performed at
the Center for Nanophase Materials Sciences as well as FIB instrument
access via ORNL's ShaRE user facility was sponsored by the Scientific
User Facilities Division, Office of Basic Energy Sciences, U.S. DOE. The
STEM work was sponsored by the Materials Sciences and Engineering
Division, Office of Basic Energy Sciences of the U.S. DOE.
NR 39
TC 79
Z9 79
U1 6
U2 89
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1948-7185
J9 J PHYS CHEM LETT
JI J. Phys. Chem. Lett.
PD NOV 4
PY 2010
VL 1
IS 21
BP 3149
EP 3155
DI 10.1021/jz101217d
PG 7
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary; Physics, Atomic, Molecular & Chemical
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 676FT
UT WOS:000283897100001
ER
PT J
AU Wishart, JF
AF Wishart, James F.
TI Ionic Liquids and Ionizing Radiation: Reactivity of Highly Energetic
Species
SO JOURNAL OF PHYSICAL CHEMISTRY LETTERS
LA English
DT Article
ID PULSE-RADIOLYSIS; METHYLTRIBUTYLAMMONIUM
BIS(TRIFLUOROMETHYLSULFONYL)IMIDE; REACTION-KINETICS; GAMMA-IRRADIATION;
REDOX REACTIONS; SOLVENTS; ELECTRON; DIFFUSION; BR-2(CENTER-DOT-);
STABILITY
AB Due to their unique properties, ionic liquids present many opportunities for basic research on the interactions of radiation with materials under conditions not previously available. At the same time, there are practical applied reasons for characterizing, understanding, and being able to predict how ionic-liquid-based devices and industrial-scale systems will perform under conditions of extreme reactivity, including radiation. This perspective discusses current issues in ionic liquid physical chemistry, provides a brief introduction to radiation chemistry draws attention to some key findings in ionic liquid radiation chemistry and identifies some current hot topics and new opportunities.
C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
RP Wishart, JF (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
EM wishart@bnl.gov
RI Wishart, James/L-6303-2013
OI Wishart, James/0000-0002-0488-7636
FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of
Chemical Sciences, Geosciences, and Biosciences [DE-AC02-98CH10886]
FX The author thanks Edward W. Castner, Jr., Andrew R. Cook, Ilya A.
Shkrob, and Tomasz Szreder for helpful comments. This work was supported
by the U.S. Department of Energy, Office of Basic Energy Sciences,
Division of Chemical Sciences, Geosciences, and Biosciences under
Contract # DE-AC02-98CH10886.
NR 51
TC 38
Z9 38
U1 3
U2 25
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1948-7185
J9 J PHYS CHEM LETT
JI J. Phys. Chem. Lett.
PD NOV 4
PY 2010
VL 1
IS 21
BP 3225
EP 3231
DI 10.1021/jz101096b
PG 7
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary; Physics, Atomic, Molecular & Chemical
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 676FT
UT WOS:000283897100014
ER
PT J
AU Xing, YC
Cai, Y
Vukmirovic, MB
Zhou, WP
Karan, H
Wang, JX
Adzic, RR
AF Xing, Yangchuan
Cai, Yun
Vukmirovic, Miomir B.
Zhou, Wei-Ping
Karan, Hiroko
Wang, Jia X.
Adzic, Radoslav R.
TI Enhancing Oxygen Reduction Reaction Activity via Pd-Au Alloy Sublayer
Mediation of Pt Monolayer Electrocatalysts
SO JOURNAL OF PHYSICAL CHEMISTRY LETTERS
LA English
DT Article
ID METAL-SURFACES; O-2 REDUCTION; PLATINUM; PT(111); CO; CATALYSIS;
KINETICS; GOLD; STABILIZATION; NANOPARTICLES
AB New Pt monolayer electrocatalysts were prepared using galvanic displacement of a copper monolayer deposited at underpotentials on a Pd core. By performing underpotential deposition twice, two monolayers were deposited forming a core-shell structure with double shells. The double shells consist of an outermost shell of Pt monolayer and a sublayer shell of Pd-Au alloy. It was found that by adjusting the compositions of the alloy sublayer, it is possible to mediate the oxygen reduction reaction (ORR) activity of the Pt catalysts. An alloy with 10% (atomic) Au was found to be the most active among the catalysts tested. Furthermore the catalysts showed good cycling stability that may be due to stabilizing effect of Au. Since different alloys can be used as the sublayer for mediation, this work may open up various opportunities to tailor electrocatalysts for best ORR activity.
C1 [Xing, Yangchuan; Cai, Yun; Vukmirovic, Miomir B.; Zhou, Wei-Ping; Karan, Hiroko; Wang, Jia X.; Adzic, Radoslav R.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
RP Xing, YC (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
EM xingy@mst.edu; adzic@bnl.gov
RI zhou, weiping/C-6832-2012; Wang, Jia/B-6346-2011; cai, yun/G-2689-2013;
OI zhou, weiping/0000-0002-8058-7280; Xing, Yangchuan/0000-0002-5985-3222
FU U.S. Department of Energy (DOE), Divisions of Chemical and Material
Sciences [DE-AC02-98CH10886]
FX This work is supported by the U.S. Department of Energy (DOE), Divisions
of Chemical and Material Sciences, under Contract No. DE-AC02-98CH10886.
NR 37
TC 90
Z9 93
U1 9
U2 84
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1948-7185
J9 J PHYS CHEM LETT
JI J. Phys. Chem. Lett.
PD NOV 4
PY 2010
VL 1
IS 21
BP 3238
EP 3242
DI 10.1021/jz101297r
PG 5
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary; Physics, Atomic, Molecular & Chemical
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 676FT
UT WOS:000283897100016
ER
PT J
AU Glazkov, VN
Smirnov, AI
Zheludev, A
Sales, BC
AF Glazkov, V. N.
Smirnov, A. I.
Zheludev, A.
Sales, B. C.
TI Modes of magnetic resonance of the S=1 dimer chain compound NTENP
SO PHYSICAL REVIEW B
LA English
DT Article
ID BOSE-EINSTEIN CONDENSATION; ALTERNATING CHAIN; FIELD; ANTIFERROMAGNET;
TLCUCL3
AB The spin dynamics of a quasi-one-dimensional S = 1 bond alternating spin-gap antiferromagnet Ni(C9H24N4)NO2(ClO4) (abbreviated as NTENP) is studied by means of electron-spin-resonance (ESR) technique. Five modes of ESR transitions are observed and identified: transitions between singlet ground state and excited triplet states, three modes of transitions between spin sublevels of collective triplet states and antiferromagnetic resonance absorption in the field-induced antiferromagnetically ordered phase. Singlet-triplet and intratriplet modes demonstrate a doublet structure which is due to two maxima in the density of magnon states in the low-frequency range. A joint analysis of the observed spectra and other experimental results allows to test the applicability of the fermionic and bosonic models. We conclude that the fermionic approach is more appropriate for the particular case of NTENP.
C1 [Glazkov, V. N.; Smirnov, A. I.] Kapitza Inst Phys Problems, Moscow 119334, Russia.
[Smirnov, A. I.] Russia & Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Russia.
[Zheludev, A.] ETH, Festkorperphys Lab, CH-8093 Zurich, Switzerland.
[Sales, B. C.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Glazkov, VN (reprint author), Kapitza Inst Phys Problems, Kosygin Str 2, Moscow 119334, Russia.
EM glazkov@kapitza.ras.ru
RI Glazkov, Vasiliy/L-9645-2015; Smirnov, Alexander/S-2974-2016
FU Russian Foundation for Basic Research [09-02-12341, 09-02-00736-a];
Material Sciences and Engineering Division, Office of Basic Energy
Sciences, U. S. Department of Energy; [MK-4569.2008.2]
FX The work was supported by grants of Russian Foundation for Basic
Research (Projects No. 09-02-12341 and No. 09-02-00736-a). One of the
authors (V.N.G.) was supported by Presidential Grant for Young
Scientists under Grant No. MK-4569.2008.2. Research at Oak Ridge
sponsored by the Material Sciences and Engineering Division, Office of
Basic Energy Sciences, U. S. Department of Energy. Authors thank M.
Zhitomirsky, I. Zaliznyak, and O. Petrenko for their interest to the
work and useful discussions.
NR 23
TC 6
Z9 6
U1 1
U2 4
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 4
PY 2010
VL 82
IS 18
AR 184406
DI 10.1103/PhysRevB.82.184406
PG 10
WC Physics, Condensed Matter
SC Physics
GA 675OE
UT WOS:000283839200005
ER
PT J
AU Thiele, R
Sperling, P
Chen, M
Bornath, T
Faustlin, RR
Fortmann, C
Glenzer, SH
Kraeft, WD
Pukhov, A
Toleikis, S
Tschentscher, T
Redmer, R
AF Thiele, R.
Sperling, P.
Chen, M.
Bornath, Th
Faeustlin, R. R.
Fortmann, C.
Glenzer, S. H.
Kraeft, W. -D.
Pukhov, A.
Toleikis, S.
Tschentscher, Th
Redmer, R.
TI Thomson scattering on inhomogeneous targets
SO PHYSICAL REVIEW E
LA English
DT Article
ID X-RAY-SCATTERING; DENSE MATTER; PLASMAS; LASER; RELAXATION; IONIZATION;
TRANSPORT; CODE
AB The introduction of brilliant free-electron lasers enables new pump-probe experiments to characterize warm dense matter states. For instance, a short-pulse optical laser irradiates a liquid hydrogen jet that is subsequently probed with brilliant soft x-ray radiation. The strongly inhomogeneous plasma prepared by the optical laser is characterized with particle-in-cell simulations. The interaction of the soft x-ray probe radiation for different time delays between pump and probe with the inhomogeneous plasma is also taken into account via radiative hydrodynamic simulations. We calculate the respective scattering spectrum based on the Born-Mermin approximation for the dynamic structure factor considering the full density and temperature-dependent Thomson scattering cross section throughout the target. We can identify plasmon modes that are generated in different target regions and monitor their temporal evolution. Therefore, such pump-probe experiments are promising tools not only to measure the important plasma parameters density and temperature but also to gain valuable information about their time-dependent profile through the target. The method described here can be applied to various pump-probe scenarios by combining optical lasers and soft x ray, as well as x-ray sources.
C1 [Thiele, R.; Sperling, P.; Bornath, Th; Kraeft, W. -D.; Redmer, R.] Univ Rostock, Inst Phys, D-18051 Rostock, Germany.
[Chen, M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Chen, M.; Pukhov, A.] Univ Dusseldorf, Inst Theoret Phys 1, D-40225 Dusseldorf, Germany.
[Faeustlin, R. R.; Toleikis, S.] DESY, D-22607 Hamburg, Germany.
[Fortmann, C.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA.
[Fortmann, C.; Glenzer, S. H.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Tschentscher, Th] European XFEL GmbH, D-22761 Hamburg, Germany.
RP Thiele, R (reprint author), Univ Rostock, Inst Phys, D-18051 Rostock, Germany.
EM robert.thiele@uni-rostock.de
RI Chen, Min/A-9955-2010; Redmer, Ronald/F-3046-2013; pukhov,
alexander/C-8082-2016;
OI Chen, Min/0000-0002-4290-9330; Thiele, Robert/0000-0001-8350-9942
FU Federal Ministry for Education and Science (BMBF) [FSP 301-FLASH,
05KS7HRA]; Department of Energy by Lawrence Livermore National
Laboratory [DE-AC52-07NA27344]; Alexander von Humboldt-Foundation; DFG
[SFB 652]; [GrK 1355]
FX We thank E. Forster, G. Gregori, H. Reinholz, G. Ropke, and U. Zastrau
for helpful discussions. This work was supported by the DFG within the
SFB 652 "Strong correlations and collective effects in radiation fields:
Coulomb systems, clusters, and particles" and the Federal Ministry for
Education and Science (BMBF) under Grant No. FSP 301-FLASH and Project
No. 05KS7HRA. The work by S.H.G. was performed under the auspices of the
Department of Energy by Lawrence Livermore National Laboratory under
Contract No. DE-AC52-07NA27344. M.C. and C.F. acknowledge support by the
Alexander von Humboldt-Foundation. R.R.F. acknowledges support by GrK
1355.
NR 47
TC 18
Z9 18
U1 0
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
J9 PHYS REV E
JI Phys. Rev. E
PD NOV 4
PY 2010
VL 82
IS 5
AR 056404
DI 10.1103/PhysRevE.82.056404
PN 2
PG 7
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 675QR
UT WOS:000283846000003
PM 21230599
ER
PT J
AU Chisholm, MF
Luo, WD
Oxley, MP
Pantelides, ST
Lee, HN
AF Chisholm, Matthew F.
Luo, Weidong
Oxley, Mark P.
Pantelides, Sokrates T.
Lee, Ho Nyung
TI Atomic-Scale Compensation Phenomena at Polar Interfaces
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID FERROELECTRIC-FILMS; THIN-FILMS; POLARIZATION; ENHANCEMENT; NANOSCALE;
LAYER
AB The interfacial screening charge that arises to compensate electric fields of dielectric or ferroelectric thin films is now recognized as the most important factor in determining the capacitance or polarization of ultrathin ferroelectrics. Here we investigate using aberration-corrected electron microscopy and density-functional theory to show how interfaces cope with the need to terminate ferroelectric polarization. In one case, we show evidence for ionic screening, which has been predicted by theory but never observed. For a ferroelectric film on an insulating substrate, we found that compensation can be mediated by an interfacial charge generated, for example, by oxygen vacancies.
C1 [Chisholm, Matthew F.; Luo, Weidong; Oxley, Mark P.; Pantelides, Sokrates T.; Lee, Ho Nyung] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Luo, Weidong; Oxley, Mark P.; Pantelides, Sokrates T.] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA.
RP Chisholm, MF (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM chisholmmf@ornl.gov
RI Lee, Ho Nyung/K-2820-2012; Luo, Weidong/A-8418-2009
OI Lee, Ho Nyung/0000-0002-2180-3975; Luo, Weidong/0000-0003-3829-1547
FU Division of Materials Sciences and Engineering, Office of Basic Energy
Sciences, U.S. Department of Energy [DE-AC05-00OR22725,
DE-FG02-09ER46554]; McMinn Endowment at Vanderbilt University; ORNL
FX We thank J. T. Luck and A. R. Lupini for important contributions. This
research was sponsored by the Division of Materials Sciences and
Engineering, Office of Basic Energy Sciences, U.S. Department of Energy
through Contracts No. DE-AC05-00OR22725 (M. F. C., H. N. L.) and No.
DE-FG02-09ER46554 (W. L., M. O., S. T. P.), by the McMinn Endowment at
Vanderbilt University (S. T. P.), and by the ORNL Laboratory Directed
Research and Development Program (M. F. C., H. N. L.).
NR 39
TC 52
Z9 52
U1 13
U2 73
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 4
PY 2010
VL 105
IS 19
AR 197602
DI 10.1103/PhysRevLett.105.197602
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 675RO
UT WOS:000283848800011
PM 21231196
ER
PT J
AU Gobbin, M
Spizzo, G
Marrelli, L
White, RB
AF Gobbin, M.
Spizzo, G.
Marrelli, L.
White, R. B.
TI Neoclassical Transport in the Helical Reversed-Field Pinch
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID SELF-ORGANIZATION; STELLARATORS; OPTIMIZATION; CONFINEMENT; PLASMAS; RFX
AB Test particle evaluation of the diffusion coefficient in a fusion plasma in the reversed-field pinch (RFP) configuration shows distinct similarities with stellarators when the plasma spontaneously evolves towards a helical shape. The almost total absence of superbanana particles at the levels of helical deformation seen in experiment (B(h)/B = 10%) causes transport to be proportional to collision frequency (at low collisions). This fact excludes the possibility that the minimum conceivable transport could be inversely proportional to collision frequency, which is typical of unoptimized stellarators. This result strengthens the perspectives of the helical RFP as a fusion configuration.
C1 [Gobbin, M.; Spizzo, G.; Marrelli, L.] Euratom ENEA Assoc, Consorzio RFX, I-35127 Padua, Italy.
[White, R. B.] Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Gobbin, M (reprint author), Euratom ENEA Assoc, Consorzio RFX, Corso Stati Uniti 4, I-35127 Padua, Italy.
EM marco.gobbin@igi.cnr.it; gianluca.spizzo@igi.cnr.it
RI Marrelli, Lionello/G-4451-2013; White, Roscoe/D-1773-2013; Spizzo,
Gianluca/B-7075-2009
OI Marrelli, Lionello/0000-0001-5370-080X; White,
Roscoe/0000-0002-4239-2685; Spizzo, Gianluca/0000-0001-8586-2168
NR 23
TC 10
Z9 10
U1 0
U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 4
PY 2010
VL 105
IS 19
AR 195006
DI 10.1103/PhysRevLett.105.195006
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 675RO
UT WOS:000283848800010
PM 21231177
ER
PT J
AU Tanner, K
Boudreau, A
Bissell, MJ
Kumar, S
AF Tanner, Kandice
Boudreau, Aaron
Bissell, Mina J.
Kumar, Sanjay
TI Dissecting Regional Variations in Stress Fiber Mechanics in Living Cells
with Laser Nanosurgery
SO BIOPHYSICAL JOURNAL
LA English
DT Article
ID FOCAL ADHESIONS; RHO-KINASE; EXTRACELLULAR-MATRIX; SIGNAL-TRANSDUCTION;
ACTIN; ORGANIZATION; FORCES; FIBROBLASTS; MORPHOGENESIS; MIGRATION
AB The ability of a cell to distribute contractile stresses across the extracellular matrix in a spatially heterogeneous fashion underlies many cellular behaviors, including motility and tissue assembly. Here we investigate the biophysical basis of this phenomenon by using femtosecond laser nanosurgery to measure the viscoelastic recoil and cell-shape contributions of contractile stress fibers (SFs) located in specific compartments of living cells. Upon photodisruption and recoil, myosin light chain kinase-dependent SFs located along the cell periphery display much lower effective elasticities and higher plateau retraction distances than Rho-associated kinase-dependent SFs located in the cell center, with severing of peripheral fibers uniquely triggering a dramatic contraction of the entire cell within minutes of fiber irradiation. Image correlation spectroscopy reveals that when one population of SFs is pharmacologically dissipated, actin density flows toward the other population. Furthermore, dissipation of peripheral fibers reduces the elasticity and increases the plateau retraction distance of central fibers, and severing central fibers under these conditions triggers cellular contraction. Together, these findings show that SFs regulated by different myosin activators exhibit different mechanical properties and cell shape contributions. They also suggest that some fibers can absorb components and assume mechanical roles of other fibers to stabilize cell shape.
C1 [Tanner, Kandice; Boudreau, Aaron; Bissell, Mina J.; Kumar, Sanjay] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Kumar, S (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
EM skumar@berkeley.edu
FU National Science Foundation [CMMI0727420]; NIH Physical Science-Oncology
Center [IU54CA143836]; Arnold and Mabel Beckman Young Investigator
Award; NIH [IDP2OD004213]; U.S. Department of Defense Breast Cancer
[W81XWH-09-1-0666]; California Breast Cancer Research Program
[14GB-0007]; U.S. Department of Energy, Office of Biological and
Environmental Research; Low Dose Radiation Program [DE-AC02-05CH1123];
National Cancer Institute [R37CA064786, U54CA126552, R01CA057621,
U54CA112970, U01CA143233, NCI U54CA143836-Bay]; U.S. Department of
Defense [W81XWH0810736]
FX S.K. received grants from the National Science Foundation (CMMI0727420)
and the NIH Physical Science-Oncology Center (IU54CA143836), an Arnold
and Mabel Beckman Young Investigator Award, and an NIH Director's New
Innovator Award (IDP2OD004213), a part of the NIH Roadmap for Medical
Research. K.T. received a postdoctoral fellowship from the U.S.
Department of Defense Breast Cancer Research Program (W81XWH-09-1-0666).
A.B. received a dissertation award from the California Breast Cancer
Research Program (14GB-0007). The work from M.J.B.'s laboratory is
supported by grants from the U.S. Department of Energy, Office of
Biological and Environmental Research, a Distinguished Fellow Award to
M.J.B.. and Low Dose Radiation Program (contract No. DE-AC02-05CH1123);
by the National Cancer Institute (awards R37CA064786, U54CA126552,
R01CA057621, U54CA112970, U01CA143233, and NCI U54CA143836-Bay Area
Physical Sciences-Oncology Center, University of California, Berkeley,
CA); and by the U.S. Department of Defense (W81XWH0810736).
NR 33
TC 47
Z9 47
U1 1
U2 8
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0006-3495
J9 BIOPHYS J
JI Biophys. J.
PD NOV 3
PY 2010
VL 99
IS 9
BP 2775
EP 2783
DI 10.1016/j.bpj.2010.08.071
PG 9
WC Biophysics
SC Biophysics
GA 676LJ
UT WOS:000283912600011
PM 21044574
ER
PT J
AU Mei, DH
Du, JC
Neurock, M
AF Mei, Donghai
Du, Jincheng
Neurock, Matthew
TI First-Principles-Based Kinetic Monte Carlo Simulation of Nitric Oxide
Reduction over Platinum Nanoparticles under Lean-Burn Conditions
SO INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
LA English
DT Article; Proceedings Paper
CT 21st International Symposium on Chemical Reaction Engineering (ISCRE 21)
CY JUN 13-16, 2010
CL Philadelphia, PA
ID SELECTIVE REDUCTION; CATALYST PARTICLES; NO ADSORPTION; ETHYLENE
HYDROGENATION; LATERAL INTERACTIONS; PT/AL2O3 CATALYSTS; EXCESS OXYGEN;
DECOMPOSITION; OXIDATION; SURFACES
AB The kinetics for NO reduction over supported platinum under lean condition were investigated by first-principles-based kinetic Monte Carlo simulation over three-dimensional Pt nanoparticles. Model platinum nanoparticles with diameters ranging from 2.3 to 4.6 nm were constructed using a truncated octahedral cluster consisting of a two (100) facets and eight (111) facets. First-principles density functional theory (DFT) calculations were used to calculate the intrinsic kinetic parameters including the binding energies for all of the surface intermediates as well as the activation barriers and reaction energies that comprise the reaction mechanism over the (100) and (111) facets, as well as the (111)/(100) edge sites on the three-dimensional nanoparticle. Both intra- and inter-facet diffusion of adsorbates were included to model surface diffusion effects over the particle surface. The simulation results show that under lean conditions where there is excess oxygen, NO reduction to N(2) occurs solely on the (100) facets. The oxidation of NO to NO(2), while much more favored on the (111) facets, can occur on both (100) and (111) facets. Only small amounts of N(2)O form over the (100) facets. The simulated apparent activation energies for N(2) and NO(2) formation over the entire particle are 45 and 42 kJ/mol, respectively. The latter is in agreement with experimentally measured value of 39 kJ/mol [Mulla, S. S., et al., Catal. Lett. 2005, 100, 267]. The effects of particle size on the activities of NO reduction to N(2) and NO oxidation to NO(2) depend upon the ratios of exposed surface sites. For the three-dimensional model Pt nanoparticles examined here, the fractions of the (100) terrace sites are similar while the fraction of the (111) terrace sites increases with increasing particle size. As a result, the activity for NO reduction is somewhat insensitive to the particle size which symmetrically increases the numbers of (111) and (100) facets as the size increases. NO reduction, however, increases much more dramatically when the number of the (100) sites increases over the (111) sites. NO oxidation activity, on the other hand, appears to increase with increasing particle size regardless of the symmetry or shape of the particle as the reaction occurs predominantly over the (111) sites but can also take place on the (100) terrace sites. The structure insensitivity for NO oxidation is consistent with experimental results.
C1 [Mei, Donghai; Du, Jincheng; Neurock, Matthew] Univ Virginia, Dept Chem Engn, Charlottesville, VA 22904 USA.
[Mei, Donghai] Pacific NW Natl Lab, Inst Interfacial Catalysis, Richland, WA 99352 USA.
[Neurock, Matthew] Univ Virginia, Dept Chem, Charlottesville, VA 22904 USA.
RP Neurock, M (reprint author), Univ Virginia, Dept Chem Engn, Charlottesville, VA 22904 USA.
EM mn4n@virginia.edu
RI Du, Jincheng/A-8052-2011; Mei, Donghai/D-3251-2011; Mei,
Donghai/A-2115-2012
OI Mei, Donghai/0000-0002-0286-4182
NR 53
TC 16
Z9 16
U1 6
U2 46
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0888-5885
J9 IND ENG CHEM RES
JI Ind. Eng. Chem. Res.
PD NOV 3
PY 2010
VL 49
IS 21
BP 10364
EP 10373
DI 10.1021/ie100999e
PG 10
WC Engineering, Chemical
SC Engineering
GA 670XO
UT WOS:000283463600025
ER
PT J
AU Zheng, XL
Veith, GM
Redekop, E
Lo, CS
Yablonsky, GS
Gleaves, JT
AF Zheng, Xiaolin
Veith, Gabriel M.
Redekop, Evgeniy
Lo, Cynthia S.
Yablonsky, Gregory S.
Gleaves, John T.
TI Oxygen and CO Adsorption on Au/SiO2 Catalysts Prepared by Magnetron
Sputtering: The Role of Oxygen Storage
SO INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
LA English
DT Article; Proceedings Paper
CT 21st International Symposium on Chemical Reaction Engineering (ISCRE 21)
CY JUN 13-16, 2010
CL Philadelphia, PA
ID SUPPORTED GOLD CATALYSTS; CARBON-MONOXIDE OXIDATION; ZONE TAP-REACTOR;
TEMPERATURE OXIDATION; SUBSURFACE OXYGEN; AU NANOPARTICLES;
ACTIVE-SITES; TRANSIENT; PRETREATMENT; EPOXIDATION
AB Temporal Analysis of Products (TAP) reactor system was used to investigate CO oxidation behavior on Au/SiO2 catalysts prepared via the physical vapor deposition method of magnetron sputtering. Au/SiO2 catalysts are a valuable model system for studying the reactivity of Au nanoparticles, as the SiO2 support plays little role in the reaction. The adsorption of CO on the catalyst was studied at different temperatures under TAP vacuum conditions. The heat of CO adsorption estimated from TAP results by moment analysis is -24.39 +/- 3.70 kJ/mol. Multipulse TAP experiments showed the important dependency between the oxygen pretreatment pressure (UHV to 33.66 psia) and catalytic activity for CO oxidation. The observed kinetic behavior indicates that oxygen consumed by CO can be replenished by oxygen stored in a reservoir, which is filled during pretreatment. The oxygen pretreatment pressure determines the amount of oxygen stored in the reservoir. The kinetic behavior indicates that oxygen is stored in the gold subsurface or at the Au/SiO2 interface, and that the active oxygen species is atomically adsorbed oxygen.
C1 [Zheng, Xiaolin; Redekop, Evgeniy; Lo, Cynthia S.; Yablonsky, Gregory S.; Gleaves, John T.] Washington Univ St Louis, Dept Energy Environm & Chem Engn, St Louis, MO 63130 USA.
[Veith, Gabriel M.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Yablonsky, Gregory S.] St Louis Univ, Parks Coll Engn, St Louis, MO 63103 USA.
RP Gleaves, JT (reprint author), Washington Univ St Louis, Dept Energy Environm & Chem Engn, 1 Brookings Dr, St Louis, MO 63130 USA.
EM jgleaves@seas.wustl.edu
RI Lo, Cynthia/B-5441-2008; Redekop, Evgeniy/H-9112-2016
OI Lo, Cynthia/0000-0003-2873-4869; Redekop, Evgeniy/0000-0001-6430-8811
NR 47
TC 11
Z9 11
U1 0
U2 19
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0888-5885
J9 IND ENG CHEM RES
JI Ind. Eng. Chem. Res.
PD NOV 3
PY 2010
VL 49
IS 21
BP 10428
EP 10437
DI 10.1021/ie100547f
PG 10
WC Engineering, Chemical
SC Engineering
GA 670XO
UT WOS:000283463600031
ER
PT J
AU Benyahia, S
Galvin, JE
AF Benyahia, Sofiane
Galvin, Janine E.
TI Estimation of Numerical Errors Related to Some Basic Assumptions in
Discrete Particle Methods
SO INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
LA English
DT Article; Proceedings Paper
CT 21st International Symposium on Chemical Reaction Engineering (ISCRE 21)
CY JUN 13-16, 2010
CL Philadelphia, PA
ID IN-CELL MODEL; GRANULAR-MATERIALS; PARTICULATE FLOWS; FLUIDIZED-BEDS;
SIMULATION; FLIP
AB Discrete particle methods that track the motion of individual particles and their collisions are computationally very expensive. To accelerate these numerical simulations, some basic assumptions have been introduced and reported in the literature. This study investigates two of these common assumptions: (1) the use of computational parcels, or clouds, wherein many particles are lumped together so that only parcels and their collisions are tracked, and (2) the multiphase particle-in-cell, or MP-PIC, wherein the collision forces are replaced by a solids pressure term with the main purpose to avoid exceeding the maximum packing of the granular assembly. Using several cases relevant to the fluidization community, errors associated with these assumptions are computed. For these cases the magnitude of error in the time-averaged flow variables indicates that further research on the validity of these assumptions is warranted.
C1 [Benyahia, Sofiane; Galvin, Janine E.] Natl Energy Technol Lab, Morgantown, WV 26507 USA.
RP Benyahia, S (reprint author), Natl Energy Technol Lab, Morgantown, WV 26507 USA.
EM sofiane.benyahia@netl.doe.gov
NR 40
TC 20
Z9 21
U1 2
U2 10
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0888-5885
J9 IND ENG CHEM RES
JI Ind. Eng. Chem. Res.
PD NOV 3
PY 2010
VL 49
IS 21
BP 10588
EP 10605
DI 10.1021/ie100662z
PG 18
WC Engineering, Chemical
SC Engineering
GA 670XO
UT WOS:000283463600049
ER
PT J
AU Li, TW
Gel, A
Syamlal, M
Guenther, C
Pannala, S
AF Li, Tingwen
Gel, Aytekin
Syamlal, Madhava
Guenther, Chris
Pannala, Sreekanth
TI High-Resolution Simulations of Coal Injection in A Gasifier
SO INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
LA English
DT Article; Proceedings Paper
CT 21st International Symposium on Chemical Reaction Engineering (ISCRE 21)
CY JUN 13-16, 2010
CL Philadelphia, PA
ID FLUIDIZED-BED; NUMERICAL-SIMULATION; GASIFICATION; DEVOLATILIZATION;
REACTOR
AB This study demonstrates an approach to effectively combine high- and low-resolution simulations for design studies of industrial coal gasifier. The flow-field data from a 10 million cell full-scale simulation of a commercial-scale gasifier were used to construct a reduced configuration to economically study the coal injection in detail. High-resolution numerical simulations of the coal injection were performed using the open-source code MFIX running on a high performance computing system. Effects of grid resolution and numerical discretization scheme on the predicted behavior of coal injection and gasification kinetics were analyzed. Pronounced differences were predicted in the devolatilization and steam gasification rates because of different discretization schemes, implying that a high-order numerical scheme is required to predict well the unsteady gasification process on an adequately resolved grid. Computational costs for simulations of varying resolutions are presented to illustrate the trade-off between the accuracy of solution and the time-to-solution, an important consideration when engineering simulations are used for the design of commercial-scale units.
C1 [Li, Tingwen; Gel, Aytekin; Syamlal, Madhava; Guenther, Chris] Natl Energy Technol Lab, Morgantown, WV 26505 USA.
[Gel, Aytekin] ALPEMI Consulting LLC, Phoenix, AZ 85044 USA.
[Pannala, Sreekanth] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Syamlal, M (reprint author), Natl Energy Technol Lab, Morgantown, WV 26505 USA.
EM madhava.syamlal@netl.doe.gov
RI Pannala, Sreekanth/F-9507-2010; Li, Tingwen/D-2173-2012;
OI Li, Tingwen/0000-0002-1900-308X; GEL, Aytekin/0000-0002-1661-2859
NR 42
TC 7
Z9 7
U1 0
U2 13
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0888-5885
J9 IND ENG CHEM RES
JI Ind. Eng. Chem. Res.
PD NOV 3
PY 2010
VL 49
IS 21
BP 10767
EP 10779
DI 10.1021/ie100519s
PG 13
WC Engineering, Chemical
SC Engineering
GA 670XO
UT WOS:000283463600067
ER
PT J
AU Solunke, RD
Veser, G
AF Solunke, Rahul D.
Veser, Goetz
TI Hydrogen Production via Chemical Looping Steam Reforming in a
Periodically Operated Fixed-Bed Reactor
SO INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
LA English
DT Article; Proceedings Paper
CT 21st International Symposium on Chemical Reaction Engineering (ISCRE 21)
CY JUN 13-16, 2010
CL Philadelphia, PA
ID REVERSE-FLOW REACTOR; CATALYTIC COMBUSTION; OXYGEN CARRIERS; REDOX;
OXIDE; SUPPORTS; METHANE
AB Chemical-looping steam reforming (CLSR) is a chemical-looping combustion (CLC) derived technology in which air is replaced by steam as oxidant. CLSR combines the inherent CO(2) capture of CLC with the production of PEMFC-ready hydrogen streams without further purification steps. CLSR thus results in strong process intensification in hydrogen production. Here, we present results from a proof-of-concept study of CLSR of synthesis gas which combines thermodynamic screening for carrier selection, with synthesis and reactive test of highly active and high-temperature stable nanostructured oxygen carriers, and a reactor modeling study in order to demonstrate the feasibility of CLSR in a periodically operated fixed-bed reactor.
C1 [Veser, Goetz] US DOE, Natl Energy Technol Lab, Pittsburgh, PA USA.
Univ Pittsburgh, Dept Chem Engn, Pittsburgh, PA 15261 USA.
RP Veser, G (reprint author), US DOE, Natl Energy Technol Lab, Pittsburgh, PA USA.
EM gveser@pitt.edu
RI Veser, Goetz/I-5727-2013
NR 21
TC 46
Z9 49
U1 3
U2 43
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0888-5885
J9 IND ENG CHEM RES
JI Ind. Eng. Chem. Res.
PD NOV 3
PY 2010
VL 49
IS 21
BP 11037
EP 11044
DI 10.1021/ie100432j
PG 8
WC Engineering, Chemical
SC Engineering
GA 670XO
UT WOS:000283463600096
ER
PT J
AU Smerdon, JA
AF Smerdon, J. A.
TI The various modes of growth of metals on quasicrystals
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Review
ID AL-PD-MN; EPITAXIAL FILM GROWTH; SURFACE-STRUCTURE; TENFOLD SYMMETRY;
FCC COBALT; PHASE; AU; ADSORPTION; NUCLEATION; INTERFACES
AB Quasicrystals are fascinating intermetallic compounds composed of two or more elements. They differ from conventional crystals in that they possess long-range order, but no translational symmetry-that is, they are aperiodic. Much effort has been expended on identifying routes towards exploiting and exploring the properties of such systems due to their aperiodic nature. One such route is concerned with the deposition of thin films, particularly of metals, to investigate how their growth progresses in this inherently frustrated scenario. This topical review will examine the various epitaxial relationships observed in quasicrystal research with particular emphasis on single-element metallic films deposited under ultrahigh-vacuum conditions.
C1 [Smerdon, J. A.] Univ Liverpool, Surface Sci Res Ctr, Liverpool L69 3BX, Merseyside, England.
RP Smerdon, JA (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM jsmerdon@anl.gov
NR 53
TC 4
Z9 4
U1 0
U2 12
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD NOV 3
PY 2010
VL 22
IS 43
AR 433002
DI 10.1088/0953-8984/22/43/433002
PG 11
WC Physics, Condensed Matter
SC Physics
GA 661SW
UT WOS:000282749400002
PM 21403322
ER
PT J
AU Jin, Z
Sun, ZZ
Simpson, LJ
O'Neill, KJ
Parilla, PA
Li, Y
Stadie, NP
Ahn, CC
Kittrell, C
Tour, JM
AF Jin, Zhong
Sun, Zhengzong
Simpson, Lin J.
O'Neill, Kevin J.
Parilla, Philip A.
Li, Yan
Stadie, Nicholas P.
Ahn, Channing C.
Kittrell, Carter
Tour, James M.
TI Solution-Phase Synthesis of Heteroatom-Substituted Carbon Scaffolds for
Hydrogen Storage
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID ACTIVATED CARBONS; ADSORPTION; NANOTUBES; TEMPERATURE; CAPACITY;
EQUATION; HEAT; BC3
AB This paper reports a bottom-up solution-phase process for the preparation of pristine and heteroatom (boron, phosphorus, or nitrogen)-substituted carbon scaffolds that show good surface areas and enhanced hydrogen adsorption capacities and binding energies. The synthesis method involves heating chlorine-containing small organic molecules with metallic sodium at reflux in high-boiling solvents. For heteroatom incorporation, heteroatomic electrophiles are added to the reaction mixture. Under the reaction conditions, micrometer-sized graphitic sheets assembled by 3-5 nm-sized domains of graphene nanoflakes are formed, and when they are heteroatom-substituted, the heteroatoms are uniformly distributed. The substituted carbon scaffolds enriched with heteroatoms (boron similar to 7.3%, phosphorus similar to 8.1%, and nitrogen similar to 28.1%) had surface areas as high as 900 m(2) g(-1) and enhanced reversible hydrogen physisorption capacities relative to pristine carbon scaffolds or common carbonaceous materials. In addition, the binding energies of the substituted carbon scaffolds, as measured by adsorption isotherms, were 8.6, 8.3, and 5.6 kJ mol(-1) for the boron-, phosphorus-, and nitrogen-enriched carbon scaffolds, respectively.
C1 [Stadie, Nicholas P.; Ahn, Channing C.] CALTECH, WM Keck Lab, Pasadena, CA 91125 USA.
[Jin, Zhong; Sun, Zhengzong; Kittrell, Carter; Tour, James M.] Rice Univ, Dept Chem, Dept Mech Engn & Mat Sci, Houston, TX 77005 USA.
[Jin, Zhong; Sun, Zhengzong; Kittrell, Carter; Tour, James M.] Rice Univ, Richard E Smalley Inst Nanoscale Sci & Technol, Houston, TX 77005 USA.
[Simpson, Lin J.; O'Neill, Kevin J.; Parilla, Philip A.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Li, Yan] Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China.
RP Ahn, CC (reprint author), CALTECH, WM Keck Lab, Pasadena, CA 91125 USA.
EM cca@caltech.edu; kittrell@rice.edu; tour@rice.edu
RI Li, Yan/D-5497-2009; Stadie, Nicholas/F-3535-2012; Sun,
Zhengzong/C-5292-2014; Stadie, Nick/F-8831-2013; Jin, Zhong/D-1742-2012;
OI Li, Yan/0000-0002-3828-8340; Jin, Zhong/0000-0001-8860-8579; Tour,
James/0000-0002-8479-9328; Stadie, Nicholas/0000-0002-1139-7846
FU U.S. Department of Energy's Office of Energy Efficiency and Renewable
Energy within the Hydrogen Sorption Center of Excellence at the National
Renewable Energy Laboratory [DEFC-36-050015073]
FX Financial support was provided by the U.S. Department of Energy's Office
of Energy Efficiency and Renewable Energy within the Hydrogen Sorption
Center of Excellence at the National Renewable Energy Laboratory
(DEFC-36-050015073).
NR 32
TC 26
Z9 26
U1 7
U2 50
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD NOV 3
PY 2010
VL 132
IS 43
BP 15246
EP 15251
DI 10.1021/ja105428d
PG 6
WC Chemistry, Multidisciplinary
SC Chemistry
GA 672XT
UT WOS:000283621700037
PM 20929219
ER
PT J
AU Ballesteros, B
Faust, TB
Lee, CF
Leigh, DA
Muryn, CA
Pritchard, RG
Schultz, D
Teat, SJ
Timco, GA
Winpenny, REP
AF Ballesteros, Beatriz
Faust, Thomas B.
Lee, Chin-Fa
Leigh, David A.
Muryn, Christopher A.
Pritchard, Robin G.
Schultz, David
Teat, Simon J.
Timco, Grigore A.
Winpenny, Richard E. P.
TI Synthesis, Structure, and Dynamic Properties of Hybrid Organic-Inorganic
Rotaxanes
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID MOLECULAR SHUTTLES; TEMPLATE SYNTHESIS; WHEELS; ASSEMBLIES; CATENANES;
CLUSTER; RINGS
AB The synthesis and characterization of a series of hybrid organic inorganic [2]rotaxanes is described. The ring components are heterometallic octa- ([Cr(7)MF(8)(O(2)C(t)Bu)(16)]; M = Co, Ni, Fe, Mn, Cu, Zn, and Cd) nuclear cages in which the metal centers are bridged by fluoride and pivalate ((t)BuCO(2)(-)) anions; the thread components feature dialkylammonium units that template the formation of the heterometallic rings about the axle to form the interlocked structures in up to 92% yield in conventional macrocyclization or one-pot 'stoppering-plus-macrocyclization' strategies. The presence in the reaction mixture of additives (secondary or tertiary amines or quaternary ammonium salts), and the nature of the stoppering groups (3,5-(t)Bu(2)C(6)H(3)CO(2) or (t)BuCONH-), can have a significant effect on the rotaxane yield. The X-ray crystal structures of 11 different [2]rotaxanes, a pseudorotaxane, and a two-station molecular shuttle show two distinct types of intercomponent hydrogen bond motifs between the ammonium groups of the organic thread and the fluoride groups of the inorganic ring. The different hydrogen bonding motifs account for the very different rates of dynamics observed for the heterometallic ring on the thread (shuttling slow; rotation fast).
C1 [Ballesteros, Beatriz; Lee, Chin-Fa; Leigh, David A.; Schultz, David] Univ Edinburgh, Sch Chem, Edinburgh EH9 3JJ, Midlothian, Scotland.
[Faust, Thomas B.; Muryn, Christopher A.; Pritchard, Robin G.; Timco, Grigore A.; Winpenny, Richard E. P.] Univ Manchester, Sch Chem, Manchester M13 9PL, Lancs, England.
[Faust, Thomas B.; Muryn, Christopher A.; Pritchard, Robin G.; Timco, Grigore A.; Winpenny, Richard E. P.] Univ Manchester, Photon Sci Inst, Manchester M13 9PL, Lancs, England.
[Teat, Simon J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Leigh, DA (reprint author), Univ Edinburgh, Sch Chem, Kings Bldg,W Mains Rd, Edinburgh EH9 3JJ, Midlothian, Scotland.
EM david.leigh@ed.ac.uk; richard.winpenny@man.ac.uk
RI Faust, Thomas/C-7096-2011; Leigh, David/K-5965-2015
OI Faust, Thomas/0000-0003-0715-4419; Leigh, David/0000-0002-1202-4507
FU European Commission; EPSRC; Office of Science, Office of Basic Energy
Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]; Swiss
National Science Foundation; Ministerio de Ciencia e Innovacion; Royal
Society-Wolfson
FX We thank Juraj Bella for the EXSY NMR experiments and the EPSRC National
Mass Spectrometry Service Centre (Swansea, U.K.) for high resolution
mass spectrometry. This research was funded by the European Commission
(through the NoE 'MAGMANet') and the EPSRC. The Advanced Light Source is
supported by the Director, Office of Science, Office of Basic Energy
Sciences, of the U.S. Department of Energy under Contract No.
DE-AC02-05CH11231. We are grateful to the Swiss National Science
Foundation for a postdoctoral fellowship to D.S. and the Ministerio de
Ciencia e Innovacion for a postdoctoral fellowship to B.B. D.A.L. is an
EPSRC Senior Research Fellow. R.E.P.W. and D.A.L. hold Royal
Society-Wolfson Research Merit Awards.
NR 38
TC 32
Z9 32
U1 5
U2 42
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD NOV 3
PY 2010
VL 132
IS 43
BP 15435
EP 15444
DI 10.1021/ja1074773
PG 10
WC Chemistry, Multidisciplinary
SC Chemistry
GA 672XT
UT WOS:000283621700059
PM 20929228
ER
PT J
AU Das, A
AF Das, Arnab
TI Exotic freezing of response in a quantum many-body system
SO PHYSICAL REVIEW B
LA English
DT Article
ID PHASE-TRANSITION; COSMOLOGICAL EXPERIMENTS; FIELD; MODEL; HYSTERESIS;
DYNAMICS
AB We show that when a quantum many-body system is subjected to coherent periodic driving, the response may exhibit exotic freezing behavior in high driving frequency (omega) regime. In a periodically driven classical thermodynamic system, freezing at high omega occurs when 1/omega is much smaller than the characteristic relaxation time of the system and hence the freezing always increases there as omega is increased. Here, in the contrary, we see surprising nonmonotonic freezing behavior of the response with omega, showing curious peak-valley structure. Quite interestingly, the entire system tends to freeze almost absolutely (the freezing peaks) when driven with a certain combination of driving parameters values (amplitude and omega) due to coherent suppression of dynamics of the quantum many-body modes, which has no classical analog. We demonstrate this new freezing phenomenon analytically (supported by large-scale numerics) for a general class of integrable quantum spin systems.
C1 [Das, Arnab] Abdus Salam Int Ctr Theoret Phys ICTP, I-34151 Trieste, Italy.
[Das, Arnab] LANL, Theoret Div T4, Los Alamos, NM 87545 USA.
RP Das, A (reprint author), Abdus Salam Int Ctr Theoret Phys ICTP, I-34151 Trieste, Italy.
NR 41
TC 42
Z9 42
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 3
PY 2010
VL 82
IS 17
AR 172402
DI 10.1103/PhysRevB.82.172402
PG 4
WC Physics, Condensed Matter
SC Physics
GA 674SO
UT WOS:000283770300001
ER
PT J
AU Oppeneer, PM
Rusz, J
Elgazzar, S
Suzuki, MT
Durakiewicz, T
Mydosh, JA
AF Oppeneer, P. M.
Rusz, J.
Elgazzar, S.
Suzuki, M. -T.
Durakiewicz, T.
Mydosh, J. A.
TI Electronic structure theory of the hidden-order material URu2Si2
SO PHYSICAL REVIEW B
LA English
DT Article
ID POINT-CONTACT SPECTROSCOPY; FERMION SYSTEM URU2SI2; TEMPERATURE
PHASE-DIAGRAM; VAN-ALPHEN OSCILLATION; HIGH MAGNETIC-FIELDS;
SUPERCONDUCTOR URU2SI2; ANTIFERROMAGNETIC STATE; QUANTUM OSCILLATIONS;
COMPOUND URU2SI2; BAND-STRUCTURE
AB We report a comprehensive electronic structure investigation of the paramagnetic (PM), the large moment antiferromagnetic (LMAF), and the hidden order (HO) phases of URu2Si2. We have performed relativistic full-potential calculations on the basis of the density-functional theory, employing different exchange-correlation functionals to treat electron correlations within the open 5f shell of uranium. Specifically, we investigate-through a comparison between calculated and low-temperature experimental properties-whether the 5f electrons are localized or delocalized in URu2Si2. The local spin-density approximation (LSDA) and generalized gradient approximation (GGA) are adopted to explore itinerant 5f behavior, the GGA plus additional strong Coulomb interaction (GGA+U approach) is used to approximate moderately localized 5f states, and the 5f-core approximation is applied to probe potential properties of completely localized uranium 5f states. We also performed local-density approximation plus dynamical mean-field theory calculations (DMFT) to investigate the temperature evolution of the quasiparticle states at 100 K and above, unveiling a progressive opening of a quasiparticle gap at the chemical potential when temperature is reduced. A detailed comparison of calculated properties with known experimental data demonstrates that the LSDA and GGA approaches, in which the uranium 5f electrons are treated as itinerant, provide an excellent explanation of the available low-temperature experimental data of the PM and LMAF phases. We show furthermore that due to a material-specific Fermi-surface instability a large, but partial, Fermi-surface gapping of up to 750 K occurs upon antiferromagnetic symmetry breaking. The occurrence of the HO phase is explained through dynamical symmetry breaking induced by a mode of long-lived antiferromagnetic spin fluctuations. This dynamical symmetry breaking model explains why the Fermi-surface gapping in the HO phase is similar but smaller than that in the LMAF phase and it also explains why the HO and LMAF phases have the same Fermi surfaces yet different order parameters. A suitable order parameter for the HO is proposed to be the Fermi-surface gap, and the dynamic spin-spin correlation function is further suggested as a secondary order parameter.
C1 [Oppeneer, P. M.; Rusz, J.; Elgazzar, S.; Suzuki, M. -T.] Uppsala Univ, Dept Phys & Astron, S-75120 Uppsala, Sweden.
[Durakiewicz, T.] Los Alamos Natl Lab, Condensed Matter & Thermal Phys Grp, Los Alamos, NM 87545 USA.
[Mydosh, J. A.] Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands.
RP Oppeneer, PM (reprint author), Uppsala Univ, Dept Phys & Astron, POB 516, S-75120 Uppsala, Sweden.
RI Rusz, Jan/A-3324-2008; Suzuki, Michi-To/G-6298-2013;
OI Rusz, Jan/0000-0002-0074-1349; Durakiewicz, Tomasz/0000-0002-1980-1874
FU Swedish Research Council; STINT; EU-JRC ITU; Swedish National
Infrastructure for Computing (SNIC)
FX During the course of this work we have benefited from discussions with
J. W. Allen, H. Amitsuka, A. Balatsky, N. Bernhoeft, M. Biasini, F.
Bourdarot, W. J. L. Buyers, R. Caciuffo, P. Chandra, P. Coleman, N. J.
Curro, J. D. Denlinger, J. Flouquet, M. Graf, H. Harima, V. Janis, J. R.
Jeffries, G. H. Lander, N. Magnani, M. B. Maple, Y. Matsuda, K. McEwen,
Y. Onuki, R. Osborn, A. Santander-Syro, and J. Schoenes. We also
gratefully acknowledge a discussion on Fermi-surface orbits with E.
Hassinger and G. Knebel. This work has been support through the Swedish
Research Council (VR), STINT, EU-JRC ITU, and the Swedish National
Infrastructure for Computing (SNIC).
NR 155
TC 66
Z9 66
U1 4
U2 28
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 3
PY 2010
VL 82
IS 20
AR 205103
DI 10.1103/PhysRevB.82.205103
PG 21
WC Physics, Condensed Matter
SC Physics
GA 674TD
UT WOS:000283771900001
ER
PT J
AU Asner, DM
Cunningham, M
Dejong, S
Randrianarivony, K
Santamarina, C
Schram, M
AF Asner, D. M.
Cunningham, M.
Dejong, S.
Randrianarivony, K.
Santamarina, C.
Schram, M.
TI Prospects for observing the standard model Higgs boson decaying into
b(b)over-bar final states produced in weak boson fusion with an
associated photon at the LHC
SO PHYSICAL REVIEW D
LA English
DT Article
ID MASSLESS PARTICLES; BROKEN SYMMETRIES; GAUGE; PHYSICS
AB One of the primary goals of the Large Hadron Collider is to understand the electroweak symmetry breaking mechanism. In the standard model, electroweak symmetry breaking is described by the Higgs mechanism which includes a scalar Higgs boson. Electroweak measurements constrain the standard model Higgs boson mass to be in the 114.4 to 157 GeV/c(2) range. For m(h) < 135 GeV/c(2), the Higgs predominantly decays into two b-quarks. As such, we investigate the prospect of observing the standard model Higgs decaying to b<(b)over bar> produced in weak-boson-fusion with an associated central photon. An isolated, high p(T), central photon trigger is expected to be available at the ATLAS and CMS experiments. In this study, we investigated the effects originating from showering, hadronization, the underlying event model, and jet performance including b-jet calibration on the sensitivity of this channel. We found that the choice of Monte Carlo simulation and its tune has a large effect on the efficacy of the central jet veto and consequently the signal significance. A signal significance of 1.6(-0.3)(+0.5) can be achieved for m(h) = 115 GeV/c(2) with 100 fb(-1) of integrated luminosity which correspond to 1 yr at design luminosity at 14 TeV pp collisions.
C1 [Asner, D. M.; Cunningham, M.; Dejong, S.; Randrianarivony, K.] Carleton Univ, Ottawa, ON K1S 5B6, Canada.
[Asner, D. M.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Santamarina, C.; Schram, M.] McGill Univ, Montreal, PQ H3A 2TS, Canada.
RP Asner, DM (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
RI lebert, thomas/H-4032-2011; Santamarina Rios, Cibran/K-4686-2014
OI Santamarina Rios, Cibran/0000-0002-9810-1816
FU Natural Sciences and Engineering Research Council of Canada; Fonds de
recherche sur la nature et les technologies; Canada Research Chairs
FX We wish to thank Aleandro Nisati, Barbara Mele and Fulvio Piccinini for
the discussions which initiated this analysis. Additionally, we wish to
thank Michelangelo Mangano (ALPGEN) and Torbjorn Sjostrand (PYTHIA) for
providing us guidance, advice, and support regarding the use of their
Monte Carlo generators. This research was funded by Natural Sciences and
Engineering Research Council of Canada, Fonds de recherche sur la nature
et les technologies, and Canada Research Chairs.
NR 27
TC 2
Z9 2
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 3
PY 2010
VL 82
IS 9
AR 093002
DI 10.1103/PhysRevD.82.093002
PG 16
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 674TS
UT WOS:000283773400004
ER
PT J
AU Kayser, B
Kopp, J
Robertson, RGH
Vogel, P
AF Kayser, Boris
Kopp, Joachim
Robertson, R. G. Hamish
Vogel, Petr
TI Theory of neutrino oscillations with entanglement
SO PHYSICAL REVIEW D
LA English
DT Article
ID QUANTUM-MECHANICS
AB We show that, despite appearances, a theoretical approach to neutrino oscillation in which the neutrino and its interaction partners are entangled yields the standard result for the neutrino oscillation wavelength. We also shed some light on the question of why plane-wave approaches to the neutrino oscillation problem can yield the correct oscillation wavelength even though they do not explicitly account for the localization of the neutrino source and the detector.
C1 [Kayser, Boris; Kopp, Joachim] Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA.
[Robertson, R. G. Hamish] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Robertson, R. G. Hamish] Univ Washington, Ctr Expt Nucl Phys & Astrophys, Seattle, WA 98195 USA.
[Vogel, Petr] CALTECH, Kellogg Radiat Lab, Pasadena, CA 91125 USA.
[Vogel, Petr] CALTECH, Dept Phys, Pasadena, CA 91125 USA.
RP Kayser, B (reprint author), Fermilab Natl Accelerator Lab, Dept Theoret Phys, POB 500, Batavia, IL 60510 USA.
EM boris@fnal.gov; jkopp@fnal.gov; rghr@uw.edu; pxv@caltech.edu
RI Kopp, Joachim/B-5866-2013
FU U.S. Department of Energy [DE-FG02-88ER40397, DE-FG02-97ER41020,
DE-AC02-07CH11359]
FX We would like to thank S. Parke for organizing a very fruitful
discussion session about entanglement in neutrino oscillations at
Fermilab. We are also indebted to E. Akhmedov, J. Conrad, G. Garvey, T.
Goldman, M. Goodman, B. Keister, J. Lowe, M. Messier, M. Shaevitz, A.
Smirnov, R. Volkas, W. Winter, and L. Wolfenstein for inspiring and
useful discussions. The work of P. V. was partially supported by the
U.S. Department of Energy under Contract No. DE-FG02-88ER40397. The work
of R. G. H. R. was supported by the U.S. Department of Energy under
Contract No. DE-FG02-97ER41020. Fermilab is operated by Fermi Research
Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S.
Department of Energy.
NR 27
TC 9
Z9 9
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 3
PY 2010
VL 82
IS 9
AR 093003
DI 10.1103/PhysRevD.82.093003
PG 6
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 674TS
UT WOS:000283773400005
ER
PT J
AU Sanchez, PD
Lees, JP
Poireau, V
Prencipe, E
Tisserand, V
Tico, JG
Grauges, E
Martinelli, M
Palano, A
Pappagallo, M
Eigen, G
Stugu, B
Sun, L
Battaglia, M
Brown, DN
Hooberman, B
Kerth, LT
Kolomensky, YG
Lynch, G
Osipenkov, IL
Tanabe, T
Hawkes, CM
Watson, AT
Koch, H
Schroeder, T
Asgeirsson, DJ
Hearty, C
Mattison, TS
McKenna, JA
Khan, A
Randle-Conde, A
Blinov, VE
Buzykaev, AR
Druzhinin, VP
Golubev, VB
Onuchin, AP
Serednyakov, SI
Skovpen, YI
Solodov, EP
Todyshev, KY
Yushkov, AN
Bondioli, M
Curry, S
Kirkby, D
Lankford, AJ
Mandelkern, M
Martin, EC
Stoker, DP
Atmacan, H
Gary, JW
Liu, F
Long, O
Vitug, GM
Campagnari, C
Hong, TM
Kovalskyi, D
Richman, JD
Eisner, AM
Heusch, CA
Kroseberg, J
Lockman, WS
Martinez, AJ
Schalk, T
Schumm, BA
Seiden, A
Winstrom, LO
Cheng, CH
Doll, DA
Echenard, B
Hitlin, DG
Ongmongkolkul, P
Porter, FC
Rakitin, AY
Andreassen, R
Dubrovin, MS
Mancinelli, G
Meadows, BT
Sokoloff, MD
Bloom, PC
Ford, WT
Gaz, A
Nagel, M
Nauenberg, U
Smith, JG
Wagner, SR
Ayad, R
Toki, WH
Karbach, TM
Merkel, J
Petzold, A
Spaan, B
Wacker, K
Kobel, MJ
Schubert, KR
Schwierz, R
Bernard, D
Verderi, M
Clark, PJ
Playfer, S
Watson, JE
Andreotti, M
Bettoni, D
Bozzi, C
Calabrese, R
Cecchi, A
Cibinetto, G
Fioravanti, E
Franchini, P
Luppi, E
Munerato, M
Negrini, M
Petrella, A
Piemontese, L
Baldini-Ferroli, R
Calcaterra, A
de Sangro, R
Finocchiaro, G
Nicolaci, M
Pacetti, S
Patteri, P
Peruzzi, IM
Piccolo, M
Rama, M
Zallo, A
Contri, R
Guido, E
Lo Vetere, M
Monge, MR
Passaggio, S
Patrignani, C
Robutti, E
Tosi, S
Bhuyan, B
Prasad, V
Lee, CL
Morii, M
Adametz, A
Marks, J
Uwer, U
Bernlochner, FU
Ebert, M
Lacker, HM
Lueck, T
Volk, A
Dauncey, PD
Tibbetts, M
Behera, PK
Mallik, U
Chen, C
Cochran, J
Crawley, HB
Dong, L
Meyer, WT
Prell, S
Rosenberg, EI
Rubin, AE
Gritsan, AV
Guo, ZJ
Arnaud, N
Davier, M
Derkach, D
da Costa, JF
Grosdidier, G
Le Diberder, F
Lutz, AM
Malaescu, B
Perez, A
Roudeau, P
Schune, MH
Serrano, J
Sordini, V
Stocchi, A
Wang, L
Wormser, G
Lange, DJ
Wright, DM
Bingham, I
Chavez, CA
Coleman, JP
Fry, JR
Gabathuler, E
Gamet, R
Hutchcroft, DE
Payne, DJ
Touramanis, C
Bevan, AJ
Di Lodovico, F
Sacco, R
Sigamani, M
Cowan, G
Paramesvaran, S
Wren, AC
Brown, DN
Davis, CL
Denig, AG
Fritsch, M
Gradl, W
Hafner, A
Alwyn, KE
Bailey, D
Barlow, RJ
Jackson, G
Lafferty, GD
West, TJ
Anderson, J
Cenci, R
Jawahery, A
Roberts, DA
Simi, G
Tuggle, JM
Dallapiccola, C
Salvati, E
Cowan, R
Dujmic, D
Sciolla, G
Zhao, M
Lindemann, D
Patel, PM
Robertson, SH
Schram, M
Biassoni, P
Lazzaro, A
Lombardo, V
Palombo, F
Stracka, S
Cremaldi, L
Godang, R
Kroeger, R
Sonnek, P
Summers, DJ
Nguyen, X
Simard, M
Taras, P
De Nardo, G
Monorchio, D
Onorato, G
Sciacca, C
Raven, G
Snoek, HL
Jessop, CP
Knoepfel, KJ
LoSecco, JM
Wang, WF
Corwin, LA
Honscheid, K
Kass, R
Morris, JP
Blount, NL
Brau, J
Frey, R
Igonkina, O
Kolb, JA
Rahmat, R
Sinev, NB
Strom, D
Strube, J
Torrence, E
Castelli, G
Feltresi, E
Gagliardi, N
Margoni, M
Morandin, M
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Ben-Haim, E
Bonneaud, GR
Briand, H
Calderini, G
Chauveau, J
Hamon, O
Leruste, P
Marchiori, G
Ocariz, J
Prendki, J
Sitt, S
Biasini, M
Manoni, E
Rossi, A
Angelini, C
Batignani, G
Bettarini, S
Carpinelli, M
Casarosa, G
Cervelli, A
Forti, F
Giorgi, MA
Lusiani, A
Neri, N
Paoloni, E
Rizzo, G
Walsh, JJ
Pegna, DL
Lu, C
Olsen, J
Smith, AJS
Telnov, AV
Anulli, F
Baracchini, E
Cavoto, G
Faccini, R
Ferrarotto, F
Ferroni, F
Gaspero, M
Gioi, LL
Mazzoni, MA
Piredda, G
Renga, F
Hartmann, T
Leddig, T
Schroder, H
Waldi, R
Adye, T
Franek, B
Olaiya, EO
Wilson, FF
Emery, S
de Monchenault, GH
Vasseur, G
Yeche, C
Zito, M
Allen, MT
Aston, D
Bard, DJ
Bartoldus, R
Benitez, JF
Cartaro, C
Convery, MR
Dorfan, J
Dubois-Felsmann, GP
Dunwoodie, W
Field, RC
Sevilla, MF
Fulsom, BG
Gabareen, AM
Graham, MT
Grenier, P
Hast, C
Innes, WR
Kelsey, MH
Kim, H
Kim, P
Kocian, ML
Leith, DWGS
Li, S
Lindquist, B
Luitz, S
Luth, V
Lynch, HL
MacFarlane, DB
Marsiske, H
Muller, DR
Neal, H
Nelson, S
O'Grady, CP
Ofte, I
Perl, M
Pulliam, T
Ratcliff, BN
Roodman, A
Salnikov, AA
Santoro, V
Schindler, RH
Schwiening, J
Snyder, A
Su, D
Sullivan, MK
Sun, S
Suzuki, K
Thompson, JM
Va'vra, J
Wagner, AP
Weaver, M
West, CA
Wisniewski, WJ
Wittgen, M
Wright, DH
Wulsin, HW
Yarritu, AK
Young, CC
Ziegler, V
Chen, XR
Park, W
Purohit, MV
White, RM
Wilson, JR
Sekula, SJ
Bellis, M
Burchat, PR
Edwards, AJ
Miyashita, TS
Ahmed, S
Alam, MS
Ernst, JA
Pan, B
Saeed, MA
Zain, SB
Guttman, N
Soffer, A
Lund, P
Spanier, SM
Eckmann, R
Ritchie, JL
Ruland, AM
Schilling, CJ
Schwitters, RF
Wray, BC
Izen, JM
Lou, XC
Bianchi, F
Gamba, D
Pelliccioni, M
Bomben, M
Lanceri, L
Vitale, L
Lopez-March, N
Martinez-Vidal, F
Milanes, DA
Oyanguren, A
Albert, J
Banerjee, S
Choi, HHF
Hamano, K
King, GJ
Kowalewski, R
Lewczuk, MJ
Nugent, IM
Roney, JM
Sobie, RJ
Gershon, TJ
Harrison, PF
Latham, TE
Puccio, EMT
Band, HR
Dasu, S
Flood, KT
Pan, Y
Prepost, R
Vuosalo, CO
Wu, SL
AF Sanchez, P. del Amo
Lees, J. P.
Poireau, V.
Prencipe, E.
Tisserand, V.
Garra Tico, J.
Grauges, E.
Martinelli, M.
Palano, A.
Pappagallo, M.
Eigen, G.
Stugu, B.
Sun, L.
Battaglia, M.
Brown, D. N.
Hooberman, B.
Kerth, L. T.
Kolomensky, Yu. G.
Lynch, G.
Osipenkov, I. L.
Tanabe, T.
Hawkes, C. M.
Watson, A. T.
Koch, H.
Schroeder, T.
Asgeirsson, D. J.
Hearty, C.
Mattison, T. S.
McKenna, J. A.
Khan, A.
Randle-Conde, A.
Blinov, V. E.
Buzykaev, A. R.
Druzhinin, V. P.
Golubev, V. B.
Onuchin, A. P.
Serednyakov, S. I.
Skovpen, Yu. I.
Solodov, E. P.
Todyshev, K. Yu.
Yushkov, A. N.
Bondioli, M.
Curry, S.
Kirkby, D.
Lankford, A. J.
Mandelkern, M.
Martin, E. C.
Stoker, D. P.
Atmacan, H.
Gary, J. W.
Liu, F.
Long, O.
Vitug, G. M.
Campagnari, C.
Hong, T. M.
Kovalskyi, D.
Richman, J. D.
Eisner, A. M.
Heusch, C. A.
Kroseberg, J.
Lockman, W. S.
Martinez, A. J.
Schalk, T.
Schumm, B. A.
Seiden, A.
Winstrom, L. O.
Cheng, C. H.
Doll, D. A.
Echenard, B.
Hitlin, D. G.
Ongmongkolkul, P.
Porter, F. C.
Rakitin, A. Y.
Andreassen, R.
Dubrovin, M. S.
Mancinelli, G.
Meadows, B. T.
Sokoloff, M. D.
Bloom, P. C.
Ford, W. T.
Gaz, A.
Nagel, M.
Nauenberg, U.
Smith, J. G.
Wagner, S. R.
Ayad, R.
Toki, W. H.
Karbach, T. M.
Merkel, J.
Petzold, A.
Spaan, B.
Wacker, K.
Kobel, M. J.
Schubert, K. R.
Schwierz, R.
Bernard, D.
Verderi, M.
Clark, P. J.
Playfer, S.
Watson, J. E.
Andreotti, M.
Bettoni, D.
Bozzi, C.
Calabrese, R.
Cecchi, A.
Cibinetto, G.
Fioravanti, E.
Franchini, P.
Luppi, E.
Munerato, M.
Negrini, M.
Petrella, A.
Piemontese, L.
Baldini-Ferroli, R.
Calcaterra, A.
de Sangro, R.
Finocchiaro, G.
Nicolaci, M.
Pacetti, S.
Patteri, P.
Peruzzi, I. M.
Piccolo, M.
Rama, M.
Zallo, A.
Contri, R.
Guido, E.
Lo Vetere, M.
Monge, M. R.
Passaggio, S.
Patrignani, C.
Robutti, E.
Tosi, S.
Bhuyan, B.
Prasad, V.
Lee, C. L.
Morii, M.
Adametz, A.
Marks, J.
Uwer, U.
Bernlochner, F. U.
Ebert, M.
Lacker, H. M.
Lueck, T.
Volk, A.
Dauncey, P. D.
Tibbetts, M.
Behera, P. K.
Mallik, U.
Chen, C.
Cochran, J.
Crawley, H. B.
Dong, L.
Meyer, W. T.
Prell, S.
Rosenberg, E. I.
Rubin, A. E.
Gritsan, A. V.
Guo, Z. J.
Arnaud, N.
Davier, M.
Derkach, D.
da Costa, J. Firmino
Grosdidier, G.
Le Diberder, F.
Lutz, A. M.
Malaescu, B.
Perez, A.
Roudeau, P.
Schune, M. H.
Serrano, J.
Sordini, V.
Stocchi, A.
Wang, L.
Wormser, G.
Lange, D. J.
Wright, D. M.
Bingham, I.
Chavez, C. A.
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Morandin, M.
Posocco, M.
Rotondo, M.
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Stroili, R.
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Bonneaud, G. R.
Briand, H.
Calderini, G.
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Leruste, Ph.
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Manoni, E.
Rossi, A.
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Batignani, G.
Bettarini, S.
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Paoloni, E.
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de Monchenault, G. Hamel
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Soffer, A.
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Spanier, S. M.
Eckmann, R.
Ritchie, J. L.
Ruland, A. M.
Schilling, C. J.
Schwitters, R. F.
Wray, B. C.
Izen, J. M.
Lou, X. C.
Bianchi, F.
Gamba, D.
Pelliccioni, M.
Bomben, M.
Lanceri, L.
Vitale, L.
Lopez-March, N.
Martinez-Vidal, F.
Milanes, D. A.
Oyanguren, A.
Albert, J.
Banerjee, Sw.
Choi, H. H. F.
Hamano, K.
King, G. J.
Kowalewski, R.
Lewczuk, M. J.
Nugent, I. M.
Roney, J. M.
Sobie, R. J.
Gershon, T. J.
Harrison, P. F.
Latham, T. E.
Puccio, E. M. T.
Band, H. R.
Dasu, S.
Flood, K. T.
Pan, Y.
Prepost, R.
Vuosalo, C. O.
Wu, S. L.
CA BaBaR Collaboration
TI Search for B+ meson decay to a(1)(+)(1260)K*(0)(892)
SO PHYSICAL REVIEW D
LA English
DT Article
ID POLARIZATION
AB We present a search for the decay B+ -> a(1)(+)(1260)K*(0)(892). The data, collected with the BABAR detector at the SLAC National Accelerator Laboratory, represent 465 X 10(6)B (B) over bar pairs produced in e(+)e(-) annihilation at the energy of the gamma(4S). We find no significant signal and set an upper limit at 90% confidence level on the product of branching fractions B(B+ -> a(1)(+) (1260)K*(0)(892)) X B(a(1)(+)(1260) -> pi(+) pi(-) pi(+)) of 1.8 X 10(-6).
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RI dong, liaoyuan/A-5093-2015; Rizzo, Giuliana/A-8516-2015; Martinez Vidal,
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Maurizio/J-5049-2012; Lusiani, Alberto/N-2976-2015; Morandin,
Mauro/A-3308-2016; Lusiani, Alberto/A-3329-2016; Stracka,
Simone/M-3931-2015; Di Lodovico, Francesca/L-9109-2016; Pappagallo,
Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Frey,
Raymond/E-2830-2016; Calabrese, Roberto/G-4405-2015; Neri,
Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo,
Marcello/I-6043-2012; de Sangro, Riccardo/J-2901-2012; Saeed, Mohammad
Alam/J-7455-2012; Negrini, Matteo/C-8906-2014; Patrignani,
Claudia/C-5223-2009; Monge, Maria Roberta/G-9127-2012; Oyanguren,
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OI dong, liaoyuan/0000-0002-4773-5050; Pacetti, Simone/0000-0002-6385-3508;
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Chen, Chunhui /0000-0003-1589-9955; Raven, Gerhard/0000-0002-2897-5323;
Bellis, Matthew/0000-0002-6353-6043; Martinelli,
Maurizio/0000-0003-4792-9178; Carpinelli, Massimo/0000-0002-8205-930X;
Lanceri, Livio/0000-0001-8220-3095; Sciacca,
Crisostomo/0000-0002-8412-4072; Ebert, Marcus/0000-0002-3014-1512;
Paoloni, Eugenio/0000-0001-5969-8712; Corwin, Luke/0000-0001-7143-3821;
Bettarini, Stefano/0000-0001-7742-2998; Cibinetto,
Gianluigi/0000-0002-3491-6231; Martinez Vidal, F*/0000-0001-6841-6035;
Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere,
Maurizio/0000-0002-6520-4480; Lusiani, Alberto/0000-0002-6876-3288;
Morandin, Mauro/0000-0003-4708-4240; Lusiani,
Alberto/0000-0002-6876-3288; Stracka, Simone/0000-0003-0013-4714; Di
Lodovico, Francesca/0000-0003-3952-2175; Pappagallo,
Marco/0000-0001-7601-5602; Calcaterra, Alessandro/0000-0003-2670-4826;
Frey, Raymond/0000-0003-0341-2636; Hamel de Monchenault,
Gautier/0000-0002-3872-3592; Lafferty, George/0000-0003-0658-4919;
Calabrese, Roberto/0000-0002-1354-5400; Neri,
Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965;
Rotondo, Marcello/0000-0001-5704-6163; de Sangro,
Riccardo/0000-0002-3808-5455; Saeed, Mohammad Alam/0000-0002-3529-9255;
Negrini, Matteo/0000-0003-0101-6963; Patrignani,
Claudia/0000-0002-5882-1747; Monge, Maria Roberta/0000-0003-1633-3195;
Oyanguren, Arantza/0000-0002-8240-7300; Luppi,
Eleonora/0000-0002-1072-5633; White, Ryan/0000-0003-3589-5900
FU SLAC; U.S. Department of Energy; National Science Foundation; Natural
Sciences and Engineering Research Council (Canada); Commissariat a
l'Energie Atomique; Institut National de Physique Nucleaire et de
Physique des Particules (France); Bundesministerium fur Bildung und
Forschung; Deutsche Forschungsgemeinschaft (Germany); Istituto Nazionale
di Fisica Nucleare (Italy); Foundation for Fundamental Research on
Matter (The Netherlands); Research Council of Norway; Ministry of
Education and Science of the Russian Federation; Ministerio de Ciencia e
Innovacion (Spain); Science and Technology Facilities Council (United
Kingdom); European Union; A. P. Sloan Foundation (USA); Binational
Science Foundation (USA-Israel)
FX We are grateful for the extraordinary contributions of our PEP-II
colleagues in achieving the excellent luminosity and machine conditions
that have made this work possible. The success of this project also
relies critically on the expertise and dedication of the computing
organizations that support BABAR. The collaborating institutions wish to
thank SLAC for its support and the kind hospitality extended to them.
This work is supported by the U.S. Department of Energy and National
Science Foundation, the Natural Sciences and Engineering Research
Council (Canada), the Commissariat a l'Energie Atomique and Institut
National de Physique Nucleaire et de Physique des Particules (France),
the Bundesministerium fur Bildung und Forschung and Deutsche
Forschungsgemeinschaft (Germany), the Istituto Nazionale di Fisica
Nucleare (Italy), the Foundation for Fundamental Research on Matter (The
Netherlands), the Research Council of Norway, the Ministry of Education
and Science of the Russian Federation, Ministerio de Ciencia e
Innovacion (Spain), and the Science and Technology Facilities Council
(United Kingdom). Individuals have received support from the Marie-Curie
IEF program (European Union), the A. P. Sloan Foundation (USA) and the
Binational Science Foundation (USA-Israel).
NR 37
TC 1
Z9 1
U1 1
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 3
PY 2010
VL 82
IS 9
AR 091101
DI 10.1103/PhysRevD.82.091101
PG 8
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 674TS
UT WOS:000283773400001
ER
PT J
AU Desilets, D
Zreda, M
Ferre, TPA
AF Desilets, Darin
Zreda, Marek
Ferre, Ty P. A.
TI Nature's neutron probe: Land surface hydrology at an elusive scale with
cosmic rays
SO WATER RESOURCES RESEARCH
LA English
DT Article
ID SOIL-MOISTURE; SNOW
AB [1] Fast neutrons are generated naturally at the land surface by energetic cosmic rays. These "background" neutrons respond strongly to the presence of water at or near the land surface and represent a hitherto elusive intermediate spatial scale of observation that is ideal for land surface studies and modeling. Soil moisture, snow, and biomass each have a distinct influence on the spectrum, height profile, and directional intensity of neutron fluxes above the ground, suggesting that different sources of water at the land surface can be distinguished with neutron data alone. Measurements can be taken at fixed sites for long-term monitoring or in a moving vehicle for mapping over large areas. We anticipate applications in many previously problematic contexts, including saline environments, wetlands and peat bogs, rocky soils, the active layer of permafrost, and water and snow intercepted by vegetation, as well as calibration and validation of data from spaceborne sensors.
C1 [Desilets, Darin] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Zreda, Marek; Ferre, Ty P. A.] Univ Arizona, Dept Hydrol & Water Resources, Tucson, AZ 85721 USA.
RP Desilets, D (reprint author), Sandia Natl Labs, Albuquerque, NM 87185 USA.
EM ddesile@sandia.gov
FU National Science Foundation [AGS-0838491, EAR-0126241, EAR-0636110,
EAR-0345440, ATM-0339527]; Army Research Office [43857-EV]; David and
Lucile Packard Foundation [951832]; Laboratory Directed Research and
Development; United States Department of Energy's National Nuclear
Security Administration [DE-AC04-94AL85000]
FX Work at the University of Arizona was supported by the COSMOS project
(National Science Foundation grant AGS-0838491); NSF grants EAR-0126241,
EAR-0636110, and EAR-0345440, Army Research Office grant 43857-EV; and
the David and Lucile Packard Foundation (Fellowship for Science and
Engineering 951832). Work at Sandia National Laboratories was supported
by a Laboratory Directed Research and Development grant. Sandia National
Laboratories is a multiprogram laboratory operated by Sandia
Corporation, a Lockheed Martin company, for the United States Department
of Energy's National Nuclear Security Administration under contract
DE-AC04-94AL85000. The Climax neutron monitor was supported by the
National Science Foundation grant ATM-0339527 to the University of
Chicago.
NR 22
TC 55
Z9 57
U1 3
U2 24
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0043-1397
J9 WATER RESOUR RES
JI Water Resour. Res.
PD NOV 3
PY 2010
VL 46
AR W11505
DI 10.1029/2009WR008726
PG 7
WC Environmental Sciences; Limnology; Water Resources
SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water
Resources
GA 676XH
UT WOS:000283951500004
ER
PT J
AU Roubinet, D
Liu, HH
de Dreuzy, JR
AF Roubinet, Delphine
Liu, Hui-Hai
de Dreuzy, Jean-Raynald
TI A new particle-tracking approach to simulating transport in
heterogeneous fractured porous media
SO WATER RESOURCES RESEARCH
LA English
DT Article
ID MATRIX DIFFUSION-COEFFICIENT; CONTAMINANT TRANSPORT; FLOW; ROCK
AB [1] Particle-tracking methods are often used to model contaminant transport in fractured porous media because they are straightforward to implement for fracture networks and are able to take into account the matrix effect without mesh generation. While classical methods assume infinite matrix or regularly spaced fractures, we have developed a stochastic method adapted to solute transport in complex fracture networks associated with irregular matrix blocks. Diffusion times in the matrix blocks are truncated by the finite size of the blocks. High ratios of matrix diffusion to fracture advection, small fracture apertures, and small blocks favor the transfer of particles to nearby fractures through matrix diffusion. Because diffusion occurs on both sides of the originating fracture before particles reach one of the neighboring fractures, transfer times to both neighboring fractures are strongly affected by the network configurations on both sides of the fracture. This new particle-tracking method is able to deal with complex fracture networks by considering heterogeneous configurations on both sides of the fracture. We finally show on simple Sierpinski lattice structures that neglecting the finite size of the matrix blocks may lead to orders of magnitude overestimations of the transfer times.
C1 [Roubinet, Delphine; de Dreuzy, Jean-Raynald] Univ Rennes 1, CNRS, UMR 6118, F-35042 Rennes, France.
[Liu, Hui-Hai] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Roubinet, D (reprint author), Univ Rennes 1, CNRS, UMR 6118, F-35042 Rennes, France.
EM delphine.roubinet@univ-rennes1.fr
RI de Dreuzy, Jean-Raynald/B-1417-2012; Experiences,
Modelisation/A-2664-2013; Roubinet, Delphine/O-5303-2016
OI Roubinet, Delphine/0000-0002-1757-9173
FU French National Research Agency ANR [ANR-07-CIS7-004]; The Brittany
council
FX This project has been funded by the French National Research Agency ANR
through the MICAS project (ANR-07-CIS7-004). The Brittany council is
acknowledged for its financial contribution through a mobility grant.
NR 24
TC 17
Z9 17
U1 3
U2 13
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0043-1397
J9 WATER RESOUR RES
JI Water Resour. Res.
PD NOV 3
PY 2010
VL 46
AR W11507
DI 10.1029/2010WR009371
PG 6
WC Environmental Sciences; Limnology; Water Resources
SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water
Resources
GA 676XH
UT WOS:000283951500006
ER
PT J
AU Mun, E
Bud'ko, SL
Canfield, PC
AF Mun, Eundeok
Bud'ko, Sergey L.
Canfield, Paul C.
TI Thermoelectric power investigations of YbAgGe across the quantum
critical point
SO PHYSICAL REVIEW B
LA English
DT Article
ID INELASTIC NEUTRON-SCATTERING; HEAVY-FERMION COMPOUNDS; ZERO-TEMPERATURE
LIMIT; PHASE-TRANSITION; LIQUID BEHAVIOR; COMPOUND YBAGGE; THERMOPOWER;
METALS; FIELD; YBRH2SI2
AB The magnetic field and temperature dependences of the thermoelectric power (TEP) of the antiferromagnetically ordered heavy fermion compound YbAgGe are measured across the field-induced quantum critical point. These TEP measurements reproduce the earlier H-T phase diagram and identify an additional domelike phase between similar to 45 and similar to 70 kOe. On the low-field side of this region, H > H(c) similar to 45 kOe, the sign of the TEP changes from negative to positive; on the high-field side of this region, H approximate to 70 kOe, a non-Fermi-liquid state is evidenced as the logarithmic temperature dependence of S(T)/T, in agreement with previous specific heat results C(T)/T alpha-log(T). For higher fields, H > 70 kOe, the observed large value of alpha, S(T) = alpha T, is indicative of the heavy fermion state and shows a correlation with C(T)/T.
C1 [Mun, Eundeok] Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA.
Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
RP Mun, E (reprint author), Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA.
RI Canfield, Paul/H-2698-2014
FU Basic Energy Sciences, U.S. Department of Energy [DE-AC02-07CH11358]
FX We would like to acknowledge G. M. Schmiedeshoff for useful discussions.
We also acknowledge our former group members, Y. Janssen and E. Morosan,
for previous sample growths. Work at Ames Laboratory was supported by
the Basic Energy Sciences, U.S. Department of Energy under Contract No.
DE-AC02-07CH11358.
NR 44
TC 8
Z9 8
U1 0
U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 2
PY 2010
VL 82
IS 17
AR 174403
DI 10.1103/PhysRevB.82.174403
PG 10
WC Physics, Condensed Matter
SC Physics
GA 674BN
UT WOS:000283708600003
ER
PT J
AU Torrey, JD
Vasko, SE
Kapetanovic, A
Zhu, ZH
Scholl, A
Rolandi, M
AF Torrey, Jessica D.
Vasko, Stephanie E.
Kapetanovic, Adnan
Zhu, Zihua
Scholl, Andreas
Rolandi, Marco
TI Scanning Probe Direct-Write of Germanium Nanostructures
SO ADVANCED MATERIALS
LA English
DT Article
ID DIP-PEN NANOLITHOGRAPHY; TUNNELING MICROSCOPE; LITHOGRAPHY; RESIST;
NANOFABRICATION; OXIDATION; DECOMPOSITION; FABRICATION; DEPOSITION;
MONOLAYER
AB Atomic force microscope direct-write of carbon-free germanium nanostructures is easily accomplished via high-field reaction of liquid diphenylgermane precursor. Sub-30 nm features are written in arbitrary patterns at velocities as high as 100 mu m s(-1).
C1 [Torrey, Jessica D.; Vasko, Stephanie E.; Kapetanovic, Adnan; Rolandi, Marco] Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA.
[Vasko, Stephanie E.] Univ Washington, Dept Chem, Seattle, WA 98195 USA.
[Zhu, Zihua] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
[Scholl, Andreas] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Rolandi, M (reprint author), Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA.
EM rolandi@u.washington.edu
RI Zhu, Zihua/K-7652-2012; Scholl, Andreas/K-4876-2012
FU University of Washington; University of Washington Center for
Nanotechnology; NSF- IGERT [DGE-050457]; Office of Science, Office of
Basic Energy Sciences, of the U. S. Department of Energy
[DE-AC02-05CH11231]; Department of Energy's Office of Biological and
Environmental Research and located at Pacific Northwest National
Laboratory
FX Financial support by the University of Washington New Faculty Seed
Funds, the University of Washington Center for Nanotechnology (S.E.V.)
NSF- IGERT(# DGE-050457), the Director, Office of Science, Office of
Basic Energy Sciences, of the U. S. Department of Energy under Contract
No. DE-AC02-05CH11231 (Advanced Light Source) is gratefully
acknowledged. A portion of the research was performed using EMSL, a
national scientific user facility sponsored by the Department of
Energy's Office of Biological and Environmental Research and located at
Pacific Northwest National Laboratory. The authors also thank Peter
Morse for assistance with some of the preliminary experiments, Scott
Dunham for insightful discussions, and Minnie Bredouw for TOC design
revisions.
NR 42
TC 22
Z9 22
U1 1
U2 13
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0935-9648
J9 ADV MATER
JI Adv. Mater.
PD NOV 2
PY 2010
VL 22
IS 41
BP 4639
EP 4642
DI 10.1002/adma.201001987
PG 4
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 677OV
UT WOS:000284002600013
PM 20872407
ER
PT J
AU Tan, W
Madduri, R
Nenadic, A
Soiland-Reyes, S
Sulakhe, D
Foster, I
Goble, CA
AF Tan, Wei
Madduri, Ravi
Nenadic, Alexandra
Soiland-Reyes, Stian
Sulakhe, Dinanath
Foster, Ian
Goble, Carole A.
TI CaGrid Workflow Toolkit: A taverna based workflow tool for cancer grid
SO BMC BIOINFORMATICS
LA English
DT Article
ID SERVICE; ENVIRONMENT; SYSTEMS; SCIENCE; DESIGN
AB Background: In biological and medical domain, the use of web services made the data and computation functionality accessible in a unified manner, which helped automate the data pipeline that was previously performed manually. Workflow technology is widely used in the orchestration of multiple services to facilitate in-silico research. Cancer Biomedical Informatics Grid (caBIG) is an information network enabling the sharing of cancer research related resources and caGrid is its underlying service-based computation infrastructure. CaBIG requires that services are composed and orchestrated in a given sequence to realize data pipelines, which are often called scientific workflows.
Results: CaGrid selected Taverna as its workflow execution system of choice due to its integration with web service technology and support for a wide range of web services, plug-in architecture to cater for easy integration of third party extensions, etc. The caGrid Workflow Toolkit (or the toolkit for short), an extension to the Taverna workflow system, is designed and implemented to ease building and running caGrid workflows. It provides users with support for various phases in using workflows: service discovery, composition and orchestration, data access, and secure service invocation, which have been identified by the caGrid community as challenging in a multi-institutional and cross-discipline domain.
Conclusions: By extending the Taverna Workbench, caGrid Workflow Toolkit provided a comprehensive solution to compose and coordinate services in caGrid, which would otherwise remain isolated and disconnected from each other. Using it users can access more than 140 services and are offered with a rich set of features including discovery of data and analytical services, query and transfer of data, security protections for service invocations, state management in service interactions, and sharing of workflows, experiences and best practices. The proposed solution is general enough to be applicable and reusable within other service-computing infrastructures that leverage similar technology stack.
C1 [Tan, Wei; Madduri, Ravi; Sulakhe, Dinanath; Foster, Ian] Univ Chicago, Computat Inst, Chicago, IL 60637 USA.
[Tan, Wei; Madduri, Ravi; Sulakhe, Dinanath; Foster, Ian] Argonne Natl Lab, Chicago, IL USA.
[Madduri, Ravi; Foster, Ian] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA.
[Nenadic, Alexandra; Soiland-Reyes, Stian; Goble, Carole A.] Univ Manchester, Sch Comp Sci, Manchester, Lancs, England.
RP Tan, W (reprint author), Univ Chicago, Computat Inst, Chicago, IL 60637 USA.
EM wtan@mcs.anl.gov
RI Tan, Wei/A-8144-2009; Soiland-Reyes, Stian/I-3743-2013;
OI Soiland-Reyes, Stian/0000-0001-9842-9718; Goble,
Carole/0000-0003-1219-2137
FU Google Summer of Code program; National Cancer Institute, National
Institutes of Health [N01-CO-12400]
FX We thank caBIG community for their help in various use cases, the
caArray team from the National Cancer Institute for the help in using
caArray Grid service, and the genePattern team from the Broad Institute
of MIT and Harvard for the help in using genePattern Grid services. We
also thank Ms. Monika Machunik's contribution to cql-builder, and the
Google Summer of Code program for the sponsorship. This project has been
funded in part with Federal funds from the National Cancer Institute,
National Institutes of Health, under Contract No. N01-CO-12400.
NR 28
TC 12
Z9 13
U1 0
U2 6
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1471-2105
J9 BMC BIOINFORMATICS
JI BMC Bioinformatics
PD NOV 2
PY 2010
VL 11
AR 542
DI 10.1186/1471-2105-11-542
PG 12
WC Biochemical Research Methods; Biotechnology & Applied Microbiology;
Mathematical & Computational Biology
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
Mathematical & Computational Biology
GA 682JX
UT WOS:000284399900001
PM 21044328
ER
PT J
AU Somorjai, GA
Aliaga, C
AF Somorjai, Gabor A.
Aliaga, Cesar
TI Molecular Studies of Model Surfaces of Metals from Single Crystals to
Nanoparticles under Catalytic Reaction Conditions. Evolution from
Prenatal and Postmortem Studies of Catalysts
SO LANGMUIR
LA English
DT Article
ID SUM-FREQUENCY GENERATION; SCANNING-TUNNELING-MICROSCOPY; ENERGY
ELECTRON-DIFFRACTION; SILICA-SUPPORTED MONODISPERSE; BLODGETT MONOLAYER
FORMATION; MESOPOROUS SBA-15 SILICA; VIBRATIONAL SPECTROSCOPY; PLATINUM
NANOPARTICLES; HIGH-PRESSURE; STRUCTURE SENSITIVITY
AB Molecular level studies of metal crystal and nanoparticle surfaces under catalytic reaction conditions at ambient pressures during turnover were made possible by the use of instruments developed at the University of California at Berkeley. Sum frequency generation vibrational spectroscopy (SFGVS), owing to its surface specificity and sensitivity, is able to identify the vibrational features of adsorbed monolayers of molecules. We identified reaction intermediates, different from reactants and products, under reaction conditions and for multipath reactions on metal single crystals and nanoparticles of varying size and shape. The high-pressure scanning tunneling microscope (HP-STM) revealed the dynamics of a catalytically active metallic surface by detecting the mobility of the adsorbed species during catalytic turnover. It also demonstrated the reversible and adsorbate-driven surface restructuring of platinum when exposed to molecules such as CO and ethylene. Ambient pressure X-ray photoelectron spectroscopy (AP-XPS) detected the reversible changes of surface composition in rhodium-palladium, platinum-palladium, and other bimetallic nanoparticles as the reactant atmosphere changed from oxidizing to reducing. It was found that metal nanoparticles of less than 2 nm in size are present in higher oxidation states, which alters and enhances their catalytic activity. The catalytic nanodiode (CND) confirmed that a catalytic reaction-induced current flow exists at oxide-metal interfaces, which correlates well with the reaction turnover.
C1 [Somorjai, Gabor A.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Somorjai, GA (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM somorjai@socrates.berkeley.edu
FU Office of Science, Office of Basic Energy Sciences, of the U.S.
Department of Energy [DE-AC02-05CH11231]
FX The work was supported by the Director, Office of Science, Office of
Basic Energy Sciences, of the U.S. Department of Energy under Contract
No. DE-AC02-05CH11231.
NR 105
TC 31
Z9 31
U1 2
U2 35
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD NOV 2
PY 2010
VL 26
IS 21
BP 16190
EP 16203
DI 10.1021/la101884s
PG 14
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 671PO
UT WOS:000283519300002
PM 20860409
ER
PT J
AU Barnette, AL
Asay, DB
Ohlhausen, JA
Dugger, MT
Kim, SH
AF Barnette, Anna L.
Asay, David B.
Ohlhausen, James A.
Dugger, Michael T.
Kim, Seong H.
TI Tribochemical Polymerization of Adsorbed n-Pentanol on SiO2 during
Rubbing: When Does It Occur and Is It Responsible for Effective Vapor
Phase Lubrication?
SO LANGMUIR
LA English
DT Article
ID ION MASS-SPECTROMETRY; SILICON-NITRIDE; INFRARED-SPECTROSCOPY;
ADSORPTION-ISOTHERM; AMBIENT CONDITIONS; WEAR; CERAMICS; SURFACES;
POLYMERS; CONTACTS
AB The origin and role of tribochemical reaction products formed while sliding silicon oxide surfaces in the presence of adsorbed alcohol molecules in equilibrium with the vapor phase were studied. Wear and friction coefficient studies with varying contact loads and n-pentanol vapor environments were used to determine under what operating conditions the tribochemical reaction species was produced. Imaging time-of-flight secondary ion mass spectrometry and microinfrared spectroscopy found that hydrocarbon species with a molecular weight higher than the starting vapor molecules are produced when there is wear of the SiO2 surface. When the n-pentanol vapor lubrication is effective and the silicon oxide surface does not wear, then the tribochemical polymerization products are negligible. These results imply that the tribochemical polymerization is associated with the substrate wear process occurring due to insufficient adsorbate supply or high mechanical load. The tribochemical reactions do not seem to be the primary lubrication mechanism for vapor phase lubrication of SiO2 surfaces with alcohol, although they may lubricate the substrate momentarily upon failure of the alcohol vapor delivery to the sliding contact.
C1 [Barnette, Anna L.; Asay, David B.; Kim, Seong H.] Penn State Univ, Dept Chem Engn, University Pk, PA 16802 USA.
[Ohlhausen, James A.; Dugger, Michael T.] Sandia Natl Labs, Ctr Mat Sci & Engn, Albuquerque, NM 87185 USA.
RP Kim, SH (reprint author), Penn State Univ, Dept Chem Engn, University Pk, PA 16802 USA.
EM shkim@engr.psu.edu
FU National Science Foundation [CMMI-0625493]; Sandia National
Laboratories; United States Department of Energy's National Nuclear
Security Administration [DE-AC04-94AL85000]
FX This work was supported by the National Science Foundation (Grant No.
CMMI-0625493) and by Sandia National Laboratories. Sandia is a
multiprogram laboratory operated by Sandia Corporation, a Lockheed
Martin Company, for the United States Department of Energy's National
Nuclear Security Administration under contract DE-AC04-94AL85000.
NR 49
TC 27
Z9 27
U1 2
U2 12
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD NOV 2
PY 2010
VL 26
IS 21
BP 16299
EP 16304
DI 10.1021/la101481c
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 671PO
UT WOS:000283519300018
PM 20735117
ER
PT J
AU Grass, ME
Park, M
Aksoy, F
Zhang, YW
Kunz, M
Liu, Z
Mon, BS
AF Grass, Michael E.
Park, Mita
Aksoy, Fonda
Zhang, Yawen
Kunz, Martin
Liu, Zhi
Mon, Bongjin S.
TI Effect of O-2, CO, and NO on Surface Segregation in a Rh0.5Pd0.5 Bulk
Crystal and Comparison to Rh0.5Pd0.5 Nanoparticles
SO LANGMUIR
LA English
DT Article
ID RH-PD; OXIDATION; CATALYSTS; ADSORPTION; ALLOYS; SIZE
AB We present an in situ study of the interaction of a bimetallic Rh0.5Pd0.5 bulk crystal with O-2, CO, and NO using ambient pressure X-ray photoelectron spectroscopy (APXPS) and compare it to results for 15 nm nanoparticles with the same overall composition. The bulk crystal surface has less Rh present under both oxidizing and reducing conditions than the surface of nanoparticles under identical conditions. Segregation and oxidation/reduction proceeds faster and at lower temperature for nanoparticles than for the bulk crystal. The near surface of the Rh0.5Pd0.5 bulk crystal after high temperature vacuum annealing is ca. 9% Rh measured by APXPS. Heating in 0.1 Torr O-2 to 350 degrees C increases the Rh surface composition to ca. 40%. The surface can then be reduced by heating in H-2 at 150 degrees C, leading to a chemically reduced surface with 30% Rh. Titration of CO by gas-phase O-2 from this Rh-rich surface proceeds at a much lower pressure than that on the Rh-deficient starting surface.
C1 [Grass, Michael E.; Aksoy, Fonda; Kunz, Martin; Liu, Zhi] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Grass, Michael E.; Park, Mita; Mon, Bongjin S.] Hanyang Univ, ERICA, Dept Appl Phys, Seoul 426791, South Korea.
[Aksoy, Fonda] Cukurova Univ, Dept Phys, TR-01330 Adana, Turkey.
[Zhang, Yawen] Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China.
RP Liu, Z (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
EM zliu2@lbl.gov; bsmun@hanyang.ac.kr
RI Kunz, Martin/K-4491-2012; Liu, Zhi/B-3642-2009
OI Kunz, Martin/0000-0001-9769-9900; Liu, Zhi/0000-0002-8973-6561
FU Office of Science, Office of Basic Energy Sciences, of the U.S.
Department of Energy [DE-AC02-05CH11231]; Korea government (MEST)
[2009-0068720]; ALS Postdoctoral Fellowship program; Peking University
Education Foundation of China
FX Microdiffraction was performed at beamline 12.3.2 and APXPS at beamline
9.3.2 of the Advanced Light Source. SEM and XRD were performed at the
Molecular Foundry. The Advanced Light Source and the Molecular Foundry
are supported by the Director, Office of Science, Office of Basic Energy
Sciences, of the U.S. Department of Energy under Contract No.
DE-AC02-05CH11231. B.S.M. is thankful for the support by the Korea
Research Foundation (KRF) grant funded by the Korea government (MEST)
(No. 2009-0068720). M.E.G. is thankful for the support of the ALS
Postdoctoral Fellowship program. Y.W. Z. appreciates the financial aid
of the Huaxin Distinguished Scholar Award from Peking University
Education Foundation of China.
NR 24
TC 21
Z9 22
U1 1
U2 22
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD NOV 2
PY 2010
VL 26
IS 21
BP 16362
EP 16367
DI 10.1021/la101690y
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 671PO
UT WOS:000283519300026
PM 20575545
ER
PT J
AU Lobo-Lapidus, RJ
Gates, BC
AF Lobo-Lapidus, Rodrigo J.
Gates, Bruce C.
TI Supported Rhenium Complexes: Almost Uniform Rhenium Tricarbonyls
Synthesized from CH3Re(CO)(5) and HY Zeolite
SO LANGMUIR
LA English
DT Article
ID DEALUMINATED Y-ZEOLITE; ABSORPTION-SPECTROSCOPY; RHODIUM DICARBONYL;
MONONUCLEAR; SURFACE; CATALYSTS; TEMPERATURE; EXAFS; ADSORPTION;
CONVERSION
AB Supported rhenium complexes were prepared from CH3Re(CO)(5) and dealuminated HY zeolite or NaY zeolite, each with a Si/Al atomic ratio of 30. The samples were characterized with infrared (IR) and extended X-ray absorption fine structure (EXAFS) spectroscopies. EXAFS data characterizing the sample formed by the reaction of CH3Re(CO)(5) with dealuminated HY zeolite show that the rhenium complexes were bonded to the zeolite frame, incorporating, on average, three carbonyl ligands per Re atom (as shown by Re-C and multiple-scattering Re-O EXAFS contributions). The I R spectra, consistent with this result, show that the supported rhenium carbonyls were bonded near aluminum sites of the zeolite, as shown by the decrease in intensity of the I R bands characterizing the acidic silanol groups resulting from the reaction of the rhenium carbonyl with the zeolite. This supported metal complex was characterized by narrow peaks in the nu(CO) region of the I R spectrum, indicating highly uniform species. In contrast, the species formed from CH3Re(CO)(5) on NaY zeolite lost fewer carbonyl ligands than those formed on HY zeolite and were significantly less uniform, as indicated by the greater breadth of the nu(CO) bands in the I R spectra. The results show the importance of zeolite H+ sites for the formation of uniform supported rhenium carbonyls from CH3Re(CO)(5); the formation of such uniform complexes did not occur on the NaY zeolite.
C1 [Lobo-Lapidus, Rodrigo J.; Gates, Bruce C.] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA.
[Lobo-Lapidus, Rodrigo J.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
RP Gates, BC (reprint author), Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA.
EM bcgates@ucdavis.edu
FU U.S. Department of Energy, Office of Energy Research, Basic Energy
Sciences [FG02-87ER15600]; Argonne National Laboratory; U.S. Department
of Energy, Office of Science, Basic Energy Sciences [DE-AC02-06CH11357,
DE-AC02-98CH10886]; NSLS, through the Divisions of Materials and
Chemical Sciences of the DOE; Synchrotron Catalysis Consortium
[DE-FG02-05ER15688]
FX This research was supported by the U.S. Department of Energy, Office of
Energy Research, Basic Energy Sciences, Contract FG02-87ER15600, and the
LDRD program at Argonne National Laboratory. We thank A. Kulkarni and S.
Khabuanchalad for help with the experimentation. The research at the
Advanced Photon Source at Argonne National Laboratory was supported by
the U.S. Department of Energy, Office of Science, Basic Energy Sciences,
under Contract No. DE-AC02-06CH11357; the NSLS is supported by the U.S.
Department of Energy, Office of Science, Basic Energy Sciences, under
Contract No. DE-AC02-98CH10886. Beamline X18-B at the NSLS is supported
by the NSLS, through the Divisions of Materials and Chemical Sciences of
the DOE, and the Synchrotron Catalysis Consortium (DE-FG02-05ER15688).
We thank the beamline staffs for their assistance.
NR 40
TC 2
Z9 2
U1 0
U2 14
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD NOV 2
PY 2010
VL 26
IS 21
BP 16368
EP 16374
DI 10.1021/la101344t
PG 7
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 671PO
UT WOS:000283519300027
PM 20560580
ER
PT J
AU Cheong, WY
Huang, Y
Dangaria, N
Gellman, AJ
AF Cheong, Wai Yeng
Huang, Ye
Dangaria, Nikunj
Gellman, Andrew J.
TI Probing Enantioselectivity on Chirally Modified Cu(110), Cu(100), and
Cu(111) Surfaces
SO LANGMUIR
LA English
DT Article
ID RACEMIC ALANINE ADLAYERS; SINGLE-CRYSTAL SURFACES; ENANTIOPURE ALANINE;
ULTRAHIGH-VACUUM; PROPYLENE-OXIDE; METAL-SURFACES; ACETIC-ACID;
R-ALANINE; S-ALANINE; L-LYSINE
AB Temperature programmed desorption methods have been used to probe the enantioselectivity of achiral Cu(100), Cu(110), and Cu(111) single crystal surfaces modified by chiral organic molecules including amino acids, alcohols, alkoxides, and amino-alcohols. The following combinations of chiral probes and chiral modifiers on Cu surfaces were included in this study: propylene oxide (PO) on L-alanine modified Cu(110), PO on L-alaninol modified Cu(111), PO on 2-butanol modified Cu(111), PO on 2-butoxide modified Cu(100). PO on 2-butoxide modified Cu(111), R-3-methylcyclohexanone (R-3-MCHO) on 2-butoxide modified Cu(100), and R-3-MCHO on 2-butoxide modified Cu(111). In contrast with the fact that these and other chiral probe/modifier systems have exhibited enantioselectivity on Pd(111) and Pt(111) surfaces, none of these probe/modifier/Cu systems exhibit enantioselectivity at either low or high modifier coverages. The nature of the underlying substrate plays a significant role in the mechanism of hydrogen-bonding interactions and could be critical to observing enantioselectivity. While hydrogen-bonding interactions between modifier and probe molecule are believed to induce enantioselectivity on Pd surfaces (Gao, F.; Wang, Y.; Burkholder, L.; Tysoe, W. T. J. Am. Chem. Soc. 2007, 129, 15240-15249), such critical interactions may be missing on Cu surfaces where hydrogen-bonding interactions are believed to occur between adjacent modifier molecules, enabling them to form clusters or islands.
C1 [Cheong, Wai Yeng; Huang, Ye; Dangaria, Nikunj; Gellman, Andrew J.] Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA.
[Gellman, Andrew J.] Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
RP Gellman, AJ (reprint author), Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA.
EM gellman@cmu.edu
RI Gellman, Andrew/M-2487-2014
OI Gellman, Andrew/0000-0001-6618-7427
FU U.S. Department of Energy
FX This work has been supported by the U.S. Department of Energy.
NR 35
TC 12
Z9 12
U1 1
U2 23
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD NOV 2
PY 2010
VL 26
IS 21
BP 16412
EP 16423
DI 10.1021/la102074a
PG 12
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 671PO
UT WOS:000283519300033
PM 20973584
ER
PT J
AU Zhang, YW
Grass, ME
Huang, WY
Somorjai, GA
AF Zhang, Yawen
Grass, Michael E.
Huang, Wenyu
Somorjai, Gabor A.
TI Seedless Polyol Synthesis and CO Oxidation Activity of Monodisperse
(111)- and (100)-Oriented Rhodium Nanocrystals in Sub-10 nm Sizes
SO LANGMUIR
LA English
DT Article
ID SHAPE-CONTROLLED SYNTHESIS; BLODGETT MONOLAYER FORMATION; PLATINUM
NANOCRYSTALS; SELECTIVE SYNTHESIS; METAL NANOCRYSTALS;
CATALYTIC-ACTIVITY; GOLD NANOCRYSTALS; NANOPARTICLES; HYDROGENATION;
PALLADIUM
AB Monodisperse sub-10 nm (6.5 nm) sized Rh nanocrystals with (111) and (100) surface structures were synthesized by a seedless polyol reduction in ethylene glycol, with poly(vinylpyrrolidone) as a capping ligand. When using [Rh(Ac)(2)](2) as the metal precursor, (111)-oriented Rh nanopolyhedra containing 76% (111)-twinned hexagons (in 2D projection) were obtained; whereas, when employing RhCl(3) as the metal precursor in the presence of alkylammonium bromide, such as tetramethylammonium bromide and trimethyl(tetradecyl)ammonium bromide, (100)-oriented Rh nanocubes were obtained with 85% selectivity. The {100} faces of the Rh nanocrystals are stabilized by chemically adsorbed Br(-) ions from alkylammonium bromides, which led to (100)-oriented nanocubes. Monolayer films of the (111)-oriented Rh nanopolyhedra and (100)-oriented Rh nanocubes were deposited on silicon wafers in a Langmuir-Blodgett trough to make model 2D nanoarray catalysts. These nanocatalysts were active for CO oxidation by O(2), and the turnover frequency was independent of nanoparticle shape, consistent with that previously observed for Rh(111) and Rh(100) single crystals.
C1 [Zhang, Yawen] Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China.
[Zhang, Yawen] Peking Univ, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China.
[Zhang, Yawen] Peking Univ, PKU HKU Joint Lab Rare Earth Mat & Bioinorgan Che, Beijing 100871, Peoples R China.
[Zhang, Yawen; Grass, Michael E.; Huang, Wenyu; Somorjai, Gabor A.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Zhang, Yawen; Grass, Michael E.; Huang, Wenyu; Somorjai, Gabor A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem, Berkeley, CA 94720 USA.
[Zhang, Yawen; Grass, Michael E.; Huang, Wenyu; Somorjai, Gabor A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Zhang, YW (reprint author), Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China.
EM ywzhang@pku.edu.cn; somorjai@berkeley.edu
RI Huang, Wenyu/L-3784-2014
OI Huang, Wenyu/0000-0003-2327-7259
FU Office of Science, Office of Basic Energy Sciences, Division of Chemical
Sciences, Geological and Biosciences and Division of Materials Sciences
and Engineering of the U.S. Department of Energy [DE-AC02-05CH11231];
Peking University Education Foundation of China
FX This work was supported by the Director, Office of Science, Office of
Basic Energy Sciences, Division of Chemical Sciences, Geological and
Biosciences and Division of Materials Sciences and Engineering of the
U.S. Department of Energy under Contract No. DE-AC02-05CH11231. We thank
the Berkeley Electron Microscopy Lab and National Center for Electron
Microscopy for the use of their TEM and HRTEM facilities, and also thank
Prof. A. Paul Alivisatos for the use of the powder X-ray diffractometer.
Y.W.Z. appreciates the financial aid of Huaxin Distinguished Scholar
Award from Peking University Education Foundation of China.
NR 43
TC 22
Z9 22
U1 4
U2 53
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD NOV 2
PY 2010
VL 26
IS 21
BP 16463
EP 16468
DI 10.1021/la101213q
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 671PO
UT WOS:000283519300039
PM 20443537
ER
PT J
AU Lu, JL
Stair, PC
AF Lu, Junling
Stair, Peter C.
TI Nano/Subnanometer Pd Nanoparticles on Oxide Supports Synthesized by
AB-type and Low-Temperature ABC-type Atomic Layer Deposition: Growth and
Morphology
SO LANGMUIR
LA English
DT Article
ID CATALYSTS; PALLADIUM; SURFACE; SIZE; CLUSTERS; SCIENCE; FILMS
AB The synthesis of uniformly dispersed nano/subnanometer Pd nanoparticles on oxide supports with atomic layer deposition (ALD) has been studied in terms of growth and morphology. In situ quartz crystal microbalance (QCM) measurements showed that AB-type Pd ALD grew more favorably on TiO(2) than on Al(2)O(3) at 200 degrees C by the sequential exposure of Pd(II) hexafluoroacetylacetonate (Pd(hfac)(2)) and formalin. The growth rate of AB-type Pd ALD decreased on the Al(2)O(3) surface at a lower deposition temperature, and there was negligible growth at 110 degrees C. However, a new ABC-type Pd ALD, which we developed recently, operates at significantly lower temperature by growing both protected Pd nanoparticles and the support simultaneously. Additionally, these two types of Pd ALD demonstrated very different growth behaviors. Scanning transmission electron microscopy (STEM) studies showed that the size of the Pd nanoparticles could be well controlled by varying AB-type Pd ALD cycles at 200 degrees C, and low-temperature ABC-type Pd ALD provides a novel way to synthesize highly uniform, ultrafine, supported Pd nanoparticles directly on high-surface-area supports, regardless of loading. Both types of Pd ALD indicate that ALD is a promising technique for synthesizing advanced catalysts with precise control.
C1 [Lu, Junling; Stair, Peter C.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
[Lu, Junling; Stair, Peter C.] Northwestern Univ, Ctr Catalysis & Surface Sci, Evanston, IL 60208 USA.
[Stair, Peter C.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
RP Stair, PC (reprint author), Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA.
EM pstair@northwestern.edu
RI Lu, Junling/F-3791-2010
OI Lu, Junling/0000-0002-7371-8414
FU Dow Chemical Company; DOE [DE-FG02-03ER15457]; AFOSR [MURI
F49620-02-1-0381, DURIP FA-9550-07-1-0526]; DTRA JSTO [FA9550-06-1-0558]
FX This work was financially supported by Dow Chemical Company under the
Dow methane challenge project. The ALD system construction was funded by
DOE (DE-FG02-03ER15457), AFOSR (MURI F49620-02-1-0381 and DURIP
FA-9550-07-1-0526), and DTRA JSTO FA9550-06-1-0558. We thank Jeffrey W.
Elam, Jeffrey T. Miller, Neng Guo, and Kathryn M. Kosuda for technical
assistance and David D. Graf and Lin Luo for constructive discussions.
NR 29
TC 41
Z9 41
U1 7
U2 61
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD NOV 2
PY 2010
VL 26
IS 21
BP 16486
EP 16495
DI 10.1021/la101378s
PG 10
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 671PO
UT WOS:000283519300043
PM 20550163
ER
PT J
AU Qi, YB
Liu, XS
Hendriksen, BLM
Navarro, V
Park, JY
Ratera, I
Klopp, JM
Edder, C
Himpsel, FJ
Frechet, JMJ
Haller, EE
Salmeron, M
AF Qi, Yabing
Liu, Xiaosong
Hendriksen, B. L. M.
Navarro, V.
Park, Jeong Y.
Ratera, Imma
Klopp, J. M.
Edder, C.
Himpsel, Franz J.
Frechet, J. M. J.
Haller, Eugene E.
Salmeron, Miquel
TI Influence of Molecular Ordering on Electrical and Friction Properties of
omega-(trans-4-Stilbene)Alkylthiol Self-Assembled Monolayers on Au (111)
SO LANGMUIR
LA English
DT Article
ID ATOMIC-FORCE MICROSCOPY; CHARGE-TRANSPORT PROPERTIES; FINE-STRUCTURE
SPECTROSCOPY; CHAIN-LENGTH DEPENDENCE; ALKANETHIOL MONOLAYERS;
STRUCTURAL-CHARACTERIZATION; ORGANIC MONOLAYERS; AU(111); JUNCTIONS;
SURFACE
AB The electrical and friction properties of omega-(trans-4-stilbene)alkylthiol self-assembled monolayers (SAMs) on Au(111) were investigated using atomic force microscopy (AFM) and near edge X-ray absorption One structure spectroscopy (NEXAFS). The sample surface was uniformly covered with a molecular film consisting of very small grains. Well-ordered and flat monolayer islands were formed after the sample was heated in nitrogen at 120 degrees C for 1 h. While lattice resolved A FM images revealed a crystalline phase in the islands, the area between islands showed no order. The islands exhibit substantial reduction (50%) in friction, supporting the existence of good ordering. NEXAFS measurements revealed an average upright molecular orientation in the film, both before and after heating, with a narrower tilt-angle distribution for the heated fim. Conductance-A FM measurements revealed a 2 orders of magnitude higher conductivity on the ordered islands than on the disordered phase. We propose that the conductance enhancement is a result of a better pi-pi stacking between the trans-stilbene molecular units as a result of improved ordering in islands.
C1 [Qi, Yabing; Hendriksen, B. L. M.; Navarro, V.; Park, Jeong Y.; Ratera, Imma; Haller, Eugene E.; Salmeron, Miquel] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Qi, Yabing] Univ Calif Berkeley, Appl Sci & Technol Grad Grp, Berkeley, CA 94720 USA.
[Liu, Xiaosong; Himpsel, Franz J.] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
[Klopp, J. M.; Edder, C.; Frechet, J. M. J.; Salmeron, Miquel] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA.
[Frechet, J. M. J.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Haller, Eugene E.; Salmeron, Miquel] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
RP Salmeron, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RI Liu, Xiaosong/D-7564-2011; Qi, Yabing/A-9243-2010; Park, Jeong
Young/A-2999-2008; Hendriksen, Bas/B-8427-2013; Ratera,
Imma/E-2353-2014; Qi, Yabing/O-7807-2014
OI Ratera, Imma/0000-0002-1464-9789; Qi, Yabing/0000-0002-4876-8049
FU Office of Science, Office of Basic Energy Sciences, Materials Science
and Engineering of the U.S. Department of Energy [DE-AC02-05CH11231];
NSF [DMR-0520527]; Berkeley Advanced Light Source
FX This work was performed at the Molecular Foundry, Lawrence Berkeley
National Laboratory, and was supported by the Office of Science, Office
of Basic Energy Sciences, Materials Science and Engineering of the U.S.
Department of Energy under Contract No. DE-AC02-05CH11231. X. L. and
F.J.H. were supported by MRSEC at the University of Wisconsin Madison
funded by NSF under DMR-0520527. X.L. is thankful for the support of a
Doctoral Fellowship from the Berkeley Advanced Light Source.
NR 60
TC 13
Z9 14
U1 0
U2 19
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD NOV 2
PY 2010
VL 26
IS 21
BP 16522
EP 16528
DI 10.1021/la100837g
PG 7
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 671PO
UT WOS:000283519300048
PM 20415505
ER
PT J
AU Yung, MM
Kuhn, JN
AF Yung, Matthew M.
Kuhn, John N.
TI Deactivation Mechanisms of Ni-Based Tar Reforming Catalysts As Monitored
by X-ray Absorption Spectroscopy
SO LANGMUIR
LA English
DT Article
ID BIOMASS GASIFICATION PROCESSES; NICKEL PHOSPHIDE CATALYSTS; OLIVINE
CATALYSTS; FINE-STRUCTURE; STEAM; EXAFS; ELIMINATION; STABILITY;
HYDROGEN; REMOVAL
AB Deactivation mechanisms of alumina-supported, Ni-based catalysts for tar reforming in biomass-derived syngas were evaluated using extended X-ray absorption One structure (EXAFS) spectroscopy. Catalysts were characterized before and after catalytic reaction cycles and regeneration procedures, which included oxidation by a mixture of steam and air, and reduction in hydrogen. Qualitative analysis of the EXAFS spectra revealed that oxidation of a portion of the Ni in the catalysts to form an oxide phase and/or it sulfide phase were likely scenarios that led to catalyst deactivation with time-on-stream and with increased reaction cycles, Deactivation through carbon deposition, phosphorus poisoning, or changes in particle size were deemed as unlikely causes. Quantitative analysis of the EXAFS spectra indicated sulfur poisoning occurred with time-on-stream, and the contaminating species could not be completely removed during the regeneration protocols. The results also verified that Ni-containing oxide phases (most likely a spinel also containing Mg and Al) formed and contributed to the deactivation. This study validates the need for developing catalyst systems that will protect Ni from sulfur poisoning and oxide formation at elevated reaction and regeneration temperatures.
C1 [Yung, Matthew M.] Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO 80401 USA.
[Kuhn, John N.] Univ S Florida, Dept Chem & Biomed Engn, Tampa, FL 33620 USA.
RP Yung, MM (reprint author), Natl Renewable Energy Lab, Natl Bioenergy Ctr, 1617 Cole Blvd, Golden, CO 80401 USA.
EM mattew_yung@nrel.gov; jnkuhn@usf.edu
FU U.S. Department of Energy [DE-AC36-99-GO-10337]; University of South
Florida; U.S. Department of Energy, Office of Science, Office of Basic
Energy Sciences [DE-AC02-06CH11357]
FX The authors thank Gabor A. Somorjai for his guidance and leadership in
many areas including surface science and catalysis. Funding for this
work, provided by the U.S. Department of Energy's Biomass Program
Contract DE-AC36-99-GO-10337 and from the University of South Florida,
is gratefully acknowledged. Portions of this work were performed at the
DuPont-Northwestern-Dow Collaborative Access Team (DND-CAT) located at
Sector 5 of the Advanced Photon Source (APS). DND-CAT is supported by
El. DuPont de Nemours & Co., The Dow Chemical Company and the State of
Illinois. Use of the APS was supported by the U.S. Department of Energy,
Office of Science, Office of Basic Energy Sciences, under Contract
Number DE-AC02-06CH11357. Assistance from the DND-CAT beamline
scientists, especially Qing Ma, is greatly appreciated.
NR 32
TC 14
Z9 14
U1 4
U2 30
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD NOV 2
PY 2010
VL 26
IS 21
BP 16589
EP 16594
DI 10.1021/la1016593
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 671PO
UT WOS:000283519300056
PM 20586431
ER
PT J
AU Wu, ZL
Li, MJ
Howe, J
Meyer, HM
Overbury, SH
AF Wu, Zili
Li, Meijun
Howe, Jane
Meyer, Harry M., III
Overbury, Steven H.
TI Probing Defect Sites on CeO2 Nanocrystals with Well-Defined Surface
Planes by Raman Spectroscopy and O-2 Adsorption
SO LANGMUIR
LA English
DT Article
ID OXYGEN STORAGE CAPACITY; LOW-INDEX SURFACES; CERIUM OXIDE;
ELECTRONIC-STRUCTURE; MIXED OXIDES; CEO2(111) SURFACES; CO OXIDATION;
X-RAY; REDUCTION; NANORODS
AB Defect sites play an essential role in ceria catalysis. In this study, ceria nanocrystals with well-defined surface planes have been synthesized and utilized for studying defect sites with both Raman spectroscopy and O-2 adsorption. Ceria nanorods ({110} + {100}), nanocubcs ({100}), and nano-octahedra ({111}) are employed to analyze the quantity and quality of defect sites on different ceria surfaces. On oxidized surfaces, nanorods have the most abundant intrinsic defect sites, followed by nanocubcs and nano-octahedra. When reduced, the induced defect sites are more clustered on nanorods than on nanocubes, although similar amounts (based on surface area) of such defect sites are produced on the two surfaces. Very few defect sites can be generated on the nano-octahedra due to the least reducibility. These differences can be rationalized by the crystallographic surface terminations of the ceria nanocrystals. The different defect sites on these nanocrystals lead to the adsorption of different surface dioxygen species. Superoxide on one-electron defect sites and peroxide on two-electron defect sites with different clustering degree are identified on the ceria nanocrystals depending on their morphology, Furthermore, the stability and reactivity of these oxygen species are also found to be surface-dependent, which is of significance for ceria-catalyzed oxidation reactions.
C1 [Wu, Zili; Li, Meijun; Overbury, Steven H.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
[Wu, Zili; Overbury, Steven H.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
[Howe, Jane; Meyer, Harry M., III] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RP Wu, ZL (reprint author), Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
EM wuzl@ornl.gov; overburysh@ornl.gov
RI Wu, Zili/F-5905-2012; Howe, Jane/G-2890-2011; Overbury,
Steven/C-5108-2016
OI Wu, Zili/0000-0002-4468-3240; Overbury, Steven/0000-0002-5137-3961
FU Division of Chemical Sciences, Geosciences, and Biosciences, Office of
Basic Energy Sciences, U.S. Department of Energy; Division of Scientific
User Facilities, U.S. Department of Energy
FX Research sponsored by the Division of Chemical Sciences, Geosciences,
and Biosciences, Office of Basic Energy Sciences, U.S. Department of
Energy. Raman and part of the TEM measurements were conducted at the
Center for Nanophase Materials Sciences, which is sponsored at Oak Ridge
National Laboratory, by the Division of Scientific User Facilities, U.S.
Department of Energy. XIS and HRTEM measurements were conducted using
the SHaRE facilities, which is sponsored at Oak Ridge National
Laboratory, by the Division of Scientific User Facilities, U.S.
Department of Energy. The research was supported in part by the
appointment for M.J.L. to the ORNL Postdoctoral Research Associates
Program, administered jointly by ORNL and the Oak Ridge Associated
Universities.
NR 53
TC 240
Z9 243
U1 45
U2 253
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD NOV 2
PY 2010
VL 26
IS 21
BP 16595
EP 16606
DI 10.1021/la101723w
PG 12
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 671PO
UT WOS:000283519300057
PM 20617854
ER
PT J
AU Singh, DJ
AF Singh, David J.
TI Electronic structure calculations with the Tran-Blaha modified
Becke-Johnson density functional
SO PHYSICAL REVIEW B
LA English
DT Article
ID GENERALIZED GRADIENT APPROXIMATION; SWITCHABLE OPTICAL-PROPERTIES;
QUASI-PARTICLE; BAND-STRUCTURE; METAL; PHOTOEMISSION; YH3;
SUPERCONDUCTORS; STATE; GD
AB We report a series of calculations testing the predictions of the Tran-Blaha functional for the electronic structure and magnetic properties of condensed systems. We find a general improvement in the properties of semiconducting and insulating systems, relative to calculations with standard generalized gradient approximations, although this is not always by the same mechanism as other approaches such as the quasiparticle GW method. In ZnO the valence bands are narrowed and the band gap is increased to a value in much better agreement with experiment. The Zn d states do not move to higher binding energy as they do in local-density approximation+U calculations. The functional is effective for systems with hydride anions, where correcting self-interaction errors in the 1s state is important. Similarly, it correctly opens semiconducting gaps in the alkaline-earth hexaborides. It correctly stabilizes an antiferromagnetic insulating ground state for the undoped cuprate parent CaCuO2, but seriously degrades the agreement with experiment for ferromagnetic Gd relative to the standard local-spin-density approximation and generalized gradient approximations. This is due to positioning of the minority-spin 4f states at too low an energy. Conversely, the position of the La 4f conduction bands of La2O3 is in reasonable accord with experiment as it is with standard functionals. The functional narrows the Fe d bands of the parent compound LaFeAsO of the iron high-temperature superconductors while maintaining the high Fe spectral weight near the Fermi energy.
C1 Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Singh, DJ (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RI Singh, David/I-2416-2012
FU Department of Energy, ORNL; Office of Basic Energy Sciences, Materials
Sciences and Engineering Division
FX Work at ORNL was supported by the Department of Energy, ORNL LDRD
Program (insulators) and the Office of Basic Energy Sciences, Materials
Sciences and Engineering Division (metals).
NR 69
TC 155
Z9 157
U1 6
U2 30
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD NOV 2
PY 2010
VL 82
IS 20
AR 205102
DI 10.1103/PhysRevB.82.205102
PG 10
WC Physics, Condensed Matter
SC Physics
GA 674BT
UT WOS:000283709200001
ER
PT J
AU Aaltonen, T
Gonzalez, BA
Amerio, S
Amidei, D
Anastassov, A
Annovi, A
Antos, J
Apollinari, G
Appel, JA
Apresyan, A
Arisawa, T
Artikov, A
Asaadi, J
Ashmanskas, W
Auerbach, B
Aurisano, A
Azfar, F
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Barria, P
Bartos, P
Bauce, M
Bauer, G
Bedeschi, F
Beecher, D
Behari, S
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Bhatti, A
Binkley, M
Bisello, D
Bizjak, I
Bland, KR
Blocker, C
Blumenfeld, B
Bocci, A
Bodek, A
Bortoletto, D
Boudreau, J
Boveia, A
Brau, B
Brigliadori, L
Brisuda, A
Bromberg, C
Brucken, E
Bucciantonio, M
Budagov, J
Budd, HS
Budd, S
Burkett, K
Busetto, G
Bussey, P
Buzatu, A
Cabrera, S
Calancha, C
Camarda, S
Campanelli, M
Campbell, M
Canelli, F
Canepa, A
Carls, B
Carlsmith, D
Carosi, R
Carrillo, S
Carron, S
Casal, B
Casarsa, M
Castro, A
Catastini, P
Cauz, D
Cavaliere, V
Cavalli-Sforza, M
Cerri, A
Cerrito, L
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Cho, K
Chokheli, D
Chou, JP
Chung, WH
Chung, YS
Ciobanu, CI
Ciocci, MA
Clark, A
Clark, D
Compostella, G
Convery, ME
Conway, J
Corbo, M
Cordelli, M
Cox, CA
Cox, DJ
Crescioli, F
Almenar, CC
Cuevas, J
Culbertson, R
Dagenhart, D
d'Ascenzo, N
Datta, M
de Barbaro, P
De Cecco, S
De Lorenzo, G
Dell'Orso, M
Deluca, C
Demortier, L
Deng, J
Deninno, M
Devoto, F
d'Errico, M
Di Canto, A
Di Ruzza, B
Dittmann, JR
D'Onofrio, M
Donati, S
Dong, P
Dorigo, T
Ebina, K
Elagin, A
Eppig, A
Erbacher, R
Errede, D
Errede, S
Ershaidat, N
Eusebi, R
Fang, HC
Farrington, S
Feindt, M
Fernandez, JP
Ferrazza, C
Field, R
Flanagan, G
Forrest, R
Frank, MJ
Franklin, M
Freeman, JC
Furic, I
Gallinaro, M
Galyardt, J
Garcia, JE
Garfinkel, AF
Garosi, P
Gerberich, H
Gerchtein, E
Giagu, S
Giakoumopoulou, V
Giannetti, P
Gibson, K
Ginsburg, CM
Giokaris, N
Giromini, P
Giunta, M
Giurgiu, G
Glagolev, V
Glenzinski, D
Gold, M
Goldin, D
Goldschmidt, N
Golossanov, A
Gomez, G
Gomez-Ceballos, G
Goncharov, M
Gonzalez, O
Gorelov, I
Goshaw, AT
Goulianos, K
Gresele, A
Grinstein, S
Grosso-Pilcher, C
Group, RC
da Costa, JG
Gunay-Unalan, Z
Haber, C
Hahn, SR
Halkiadakis, E
Hamaguchi, A
Han, JY
Happacher, F
Hara, K
Hare, D
Hare, M
Harr, RF
Hatakeyama, K
Hays, C
Heck, M
Heinrich, J
Herndon, M
Hewamanage, S
Hidas, D
Hocker, A
Hopkins, W
Horn, D
Hou, S
Hughes, RE
Hurwitz, M
Husemann, U
Hussain, N
Hussein, M
Huston, J
Introzzi, G
Iori, M
Ivanov, A
James, E
Jang, D
Jayatilaka, B
Jeon, EJ
Jha, MK
Jindariani, S
Johnson, W
Jones, M
Joo, KK
Jun, SY
Junk, TR
Kamon, T
Karchin, PE
Kato, Y
Ketchum, W
Keung, J
Khotilovich, V
Kilminster, B
Kim, DH
Kim, HS
Kim, HW
Kim, JE
Kim, MJ
Kim, SB
Kim, SH
Kim, YK
Kimura, N
Klimenko, S
Kondo, K
Kong, DJ
Konigsberg, J
Korytov, A
Kotwal, AV
Kreps, M
Kroll, J
Krop, D
Krumnack, N
Kruse, M
Krutelyov, V
Kuhr, T
Kurata, M
Kwang, S
Laasanen, AT
Lami, S
Lammel, S
Lancaster, M
Lander, RL
Lannon, K
Lath, A
Latino, G
Lazzizzera, I
LeCompte, T
Lee, E
Lee, HS
Lee, JS
Lee, SW
Leo, S
Leone, S
Lewis, JD
Lin, CJ
Linacre, J
Lindgren, M
Lipeles, E
Lister, A
Litvintsev, DO
Liu, C
Liu, Q
Liu, T
Lockwitz, S
Lockyer, NS
Loginov, A
Lucchesi, D
Lueck, J
Lujan, P
Lukens, P
Lungu, G
Lys, J
Lysak, R
Madrak, R
Maeshima, K
Makhoul, K
Maksimovic, P
Malik, S
Manca, G
Manousakis-Katsikakis, A
Margaroli, F
Marino, C
Martinez, M
Martinez-Ballarin, R
Mastrandrea, P
Mathis, M
Mattson, ME
Mazzanti, P
McFarland, KS
McIntyre, P
McNulty, R
Mehta, A
Mehtala, P
Menzione, A
Mesropian, C
Miao, T
Mietlicki, D
Mitra, A
Miyake, H
Moed, S
Moggi, N
Mondragon, MN
Moon, CS
Moore, R
Morello, MJ
Morlock, J
Fernandez, PM
Mukherjee, A
Muller, T
Murat, P
Mussini, M
Nachtman, J
Nagai, Y
Naganoma, J
Nakano, I
Napier, A
Nett, J
Neu, C
Neubauer, MS
Nielsen, J
Nodulman, L
Norniella, O
Nurse, E
Oakes, L
Oh, SH
Oh, YD
Oksuzian, I
Okusawa, T
Orava, R
Ortolan, L
Griso, SP
Pagliarone, C
Palencia, E
Papadimitriou, V
Paramonov, AA
Patrick, J
Pauletta, G
Paulini, M
Paus, C
Pellett, DE
Penzo, A
Phillips, TJ
Piacentino, G
Pianori, E
Pilot, J
Pitts, K
Plager, C
Pondrom, L
Potamianos, K
Poukhov, O
Prokoshin, F
Pronko, A
Ptohos, F
Pueschel, E
Punzi, G
Pursley, J
Rahaman, A
Ramakrishnan, V
Ranjan, N
Redondo, I
Renton, P
Rescigno, M
Rimondi, F
Ristori, L
Robson, A
Rodrigo, T
Rodriguez, T
Rogers, E
Rolli, S
Roser, R
Rossi, M
Ruffini, F
Ruiz, A
Russ, J
Rusu, V
Safonov, A
Sakumoto, WK
Santi, L
Sartori, L
Sato, K
Saveliev, V
Savoy-Navarro, A
Schlabach, P
Schmidt, A
Schmidt, EE
Schmidt, MP
Schmitt, M
Schwarz, T
Scodellaro, L
Scribano, A
Scuri, F
Sedov, A
Seidel, S
Seiya, Y
Semenov, A
Sforza, F
Sfyrla, A
Shalhout, SZ
Shears, T
Shepard, PF
Shimojima, M
Shiraishi, S
Shochet, M
Shreyber, I
Simonenko, A
Sinervo, P
Sissakian, A
Sliwa, K
Smith, JR
Snider, FD
Soha, A
Somalwar, S
Sorin, V
Squillacioti, P
Stanitzki, M
St Denis, RS
Stelzer, B
Stelzer-Chilton, O
Stentz, D
Strologas, J
Strycker, GL
Sudo, Y
Sukhanov, A
Suslov, I
Takemasa, K
Takeuchi, Y
Tang, J
Tecchio, M
Teng, PK
Thom, J
Thome, J
Thompson, GA
Thomson, E
Ttito-Guzman, P
Tkaczyk, S
Toback, D
Tokar, S
Tollefson, K
Tomura, T
Tonelli, D
Torre, S
Torretta, D
Totaro, P
Trovato, M
Tu, Y
Turini, N
Ukegawa, F
Uozumi, S
Varganov, A
Vataga, E
Vazquez, F
Velev, G
Vellidis, C
Vidal, M
Vila, I
Vilar, R
Vogel, M
Volpi, G
Wagner, P
Wagner, RL
Wakisaka, T
Wallny, R
Wang, SM
Warburton, A
Waters, D
Weinberger, M
Wester, WC
Whitehouse, B
Whiteson, D
Wicklund, AB
Wicklund, E
Wilbur, S
Wick, F
Williams, HH
Wilson, JS
Wilson, P
Winer, BL
Wittich, P
Wolbers, S
Wolfe, H
Wright, T
Wu, X
Wu, Z
Yamamoto, K
Yamaoka, J
Yang, T
Yang, UK
Yang, YC
Yao, WM
Yeh, GP
Yi, K
Yoh, J
Yorita, K
Yoshida, T
Yu, GB
Yu, I
Yu, SS
Yun, JC
Zanetti, A
Zeng, Y
Zucchelli, S
AF Aaltonen, T.
Alvarez Gonzalez, B.
Amerio, S.
Amidei, D.
Anastassov, A.
Annovi, A.
Antos, J.
Apollinari, G.
Appel, J. A.
Apresyan, A.
Arisawa, T.
Artikov, A.
Asaadi, J.
Ashmanskas, W.
Auerbach, B.
Aurisano, A.
Azfar, F.
Badgett, W.
Barbaro-Galtieri, A.
Barnes, V. E.
Barnett, B. A.
Barria, P.
Bartos, P.
Bauce, M.
Bauer, G.
Bedeschi, F.
Beecher, D.
Behari, S.
Bellettini, G.
Bellinger, J.
Benjamin, D.
Beretvas, A.
Bhatti, A.
Binkley, M.
Bisello, D.
Bizjak, I.
Bland, K. R.
Blocker, C.
Blumenfeld, B.
Bocci, A.
Bodek, A.
Bortoletto, D.
Boudreau, J.
Boveia, A.
Brau, B.
Brigliadori, L.
Brisuda, A.
Bromberg, C.
Brucken, E.
Bucciantonio, M.
Budagov, J.
Budd, H. S.
Budd, S.
Burkett, K.
Busetto, G.
Bussey, P.
Buzatu, A.
Cabrera, S.
Calancha, C.
Camarda, S.
Campanelli, M.
Campbell, M.
Canelli, F.
Canepa, A.
Carls, B.
Carlsmith, D.
Carosi, R.
Carrillo, S.
Carron, S.
Casal, B.
Casarsa, M.
Castro, A.
Catastini, P.
Cauz, D.
Cavaliere, V.
Cavalli-Sforza, M.
Cerri, A.
Cerrito, L.
Chen, Y. C.
Chertok, M.
Chiarelli, G.
Chlachidze, G.
Chlebana, F.
Cho, K.
Chokheli, D.
Chou, J. P.
Chung, W. H.
Chung, Y. S.
Ciobanu, C. I.
Ciocci, M. A.
Clark, A.
Clark, D.
Compostella, G.
Convery, M. E.
Conway, J.
Corbo, M.
Cordelli, M.
Cox, C. A.
Cox, D. J.
Crescioli, F.
Almenar, C. Cuenca
Cuevas, J.
Culbertson, R.
Dagenhart, D.
d'Ascenzo, N.
Datta, M.
de Barbaro, P.
De Cecco, S.
De Lorenzo, G.
Dell'Orso, M.
Deluca, C.
Demortier, L.
Deng, J.
Deninno, M.
Devoto, F.
d'Errico, M.
Di Canto, A.
Di Ruzza, B.
Dittmann, J. R.
D'Onofrio, M.
Donati, S.
Dong, P.
Dorigo, T.
Ebina, K.
Elagin, A.
Eppig, A.
Erbacher, R.
Errede, D.
Errede, S.
Ershaidat, N.
Eusebi, R.
Fang, H. C.
Farrington, S.
Feindt, M.
Fernandez, J. P.
Ferrazza, C.
Field, R.
Flanagan, G.
Forrest, R.
Frank, M. J.
Franklin, M.
Freeman, J. C.
Furic, I.
Gallinaro, M.
Galyardt, J.
Garcia, J. E.
Garfinkel, A. F.
Garosi, P.
Gerberich, H.
Gerchtein, E.
Giagu, S.
Giakoumopoulou, V.
Giannetti, P.
Gibson, K.
Ginsburg, C. M.
Giokaris, N.
Giromini, P.
Giunta, M.
Giurgiu, G.
Glagolev, V.
Glenzinski, D.
Gold, M.
Goldin, D.
Goldschmidt, N.
Golossanov, A.
Gomez, G.
Gomez-Ceballos, G.
Goncharov, M.
Gonzalez, O.
Gorelov, I.
Goshaw, A. T.
Goulianos, K.
Gresele, A.
Grinstein, S.
Grosso-Pilcher, C.
Group, R. C.
da Costa, J. Guimaraes
Gunay-Unalan, Z.
Haber, C.
Hahn, S. R.
Halkiadakis, E.
Hamaguchi, A.
Han, J. Y.
Happacher, F.
Hara, K.
Hare, D.
Hare, M.
Harr, R. F.
Hatakeyama, K.
Hays, C.
Heck, M.
Heinrich, J.
Herndon, M.
Hewamanage, S.
Hidas, D.
Hocker, A.
Hopkins, W.
Horn, D.
Hou, S.
Hughes, R. E.
Hurwitz, M.
Husemann, U.
Hussain, N.
Hussein, M.
Huston, J.
Introzzi, G.
Iori, M.
Ivanov, A.
James, E.
Jang, D.
Jayatilaka, B.
Jeon, E. J.
Jha, M. K.
Jindariani, S.
Johnson, W.
Jones, M.
Joo, K. K.
Jun, S. Y.
Junk, T. R.
Kamon, T.
Karchin, P. E.
Kato, Y.
Ketchum, W.
Keung, J.
Khotilovich, V.
Kilminster, B.
Kim, D. H.
Kim, H. S.
Kim, H. W.
Kim, J. E.
Kim, M. J.
Kim, S. B.
Kim, S. H.
Kim, Y. K.
Kimura, N.
Klimenko, S.
Kondo, K.
Kong, D. J.
Konigsberg, J.
Korytov, A.
Kotwal, A. V.
Kreps, M.
Kroll, J.
Krop, D.
Krumnack, N.
Kruse, M.
Krutelyov, V.
Kuhr, T.
Kurata, M.
Kwang, S.
Laasanen, A. T.
Lami, S.
Lammel, S.
Lancaster, M.
Lander, R. L.
Lannon, K.
Lath, A.
Latino, G.
Lazzizzera, I.
LeCompte, T.
Lee, E.
Lee, H. S.
Lee, J. S.
Lee, S. W.
Leo, S.
Leone, S.
Lewis, J. D.
Lin, C. -J.
Linacre, J.
Lindgren, M.
Lipeles, E.
Lister, A.
Litvintsev, D. O.
Liu, C.
Liu, Q.
Liu, T.
Lockwitz, S.
Lockyer, N. S.
Loginov, A.
Lucchesi, D.
Lueck, J.
Lujan, P.
Lukens, P.
Lungu, G.
Lys, J.
Lysak, R.
Madrak, R.
Maeshima, K.
Makhoul, K.
Maksimovic, P.
Malik, S.
Manca, G.
Manousakis-Katsikakis, A.
Margaroli, F.
Marino, C.
Martinez, M.
Martinez-Ballarin, R.
Mastrandrea, P.
Mathis, M.
Mattson, M. E.
Mazzanti, P.
McFarland, K. S.
McIntyre, P.
McNulty, R.
Mehta, A.
Mehtala, P.
Menzione, A.
Mesropian, C.
Miao, T.
Mietlicki, D.
Mitra, A.
Miyake, H.
Moed, S.
Moggi, N.
Mondragon, M. N.
Moon, C. S.
Moore, R.
Morello, M. J.
Morlock, J.
Fernandez, P. Movilla
Mukherjee, A.
Muller, Th.
Murat, P.
Mussini, M.
Nachtman, J.
Nagai, Y.
Naganoma, J.
Nakano, I.
Napier, A.
Nett, J.
Neu, C.
Neubauer, M. S.
Nielsen, J.
Nodulman, L.
Norniella, O.
Nurse, E.
Oakes, L.
Oh, S. H.
Oh, Y. D.
Oksuzian, I.
Okusawa, T.
Orava, R.
Ortolan, L.
Griso, S. Pagan
Pagliarone, C.
Palencia, E.
Papadimitriou, V.
Paramonov, A. A.
Patrick, J.
Pauletta, G.
Paulini, M.
Paus, C.
Pellett, D. E.
Penzo, A.
Phillips, T. J.
Piacentino, G.
Pianori, E.
Pilot, J.
Pitts, K.
Plager, C.
Pondrom, L.
Potamianos, K.
Poukhov, O.
Prokoshin, F.
Pronko, A.
Ptohos, F.
Pueschel, E.
Punzi, G.
Pursley, J.
Rahaman, A.
Ramakrishnan, V.
Ranjan, N.
Redondo, I.
Renton, P.
Rescigno, M.
Rimondi, F.
Ristori, L.
Robson, A.
Rodrigo, T.
Rodriguez, T.
Rogers, E.
Rolli, S.
Roser, R.
Rossi, M.
Ruffini, F.
Ruiz, A.
Russ, J.
Rusu, V.
Safonov, A.
Sakumoto, W. K.
Santi, L.
Sartori, L.
Sato, K.
Saveliev, V.
Savoy-Navarro, A.
Schlabach, P.
Schmidt, A.
Schmidt, E. E.
Schmidt, M. P.
Schmitt, M.
Schwarz, T.
Scodellaro, L.
Scribano, A.
Scuri, F.
Sedov, A.
Seidel, S.
Seiya, Y.
Semenov, A.
Sforza, F.
Sfyrla, A.
Shalhout, S. Z.
Shears, T.
Shepard, P. F.
Shimojima, M.
Shiraishi, S.
Shochet, M.
Shreyber, I.
Simonenko, A.
Sinervo, P.
Sissakian, A.
Sliwa, K.
Smith, J. R.
Snider, F. D.
Soha, A.
Somalwar, S.
Sorin, V.
Squillacioti, P.
Stanitzki, M.
St Denis, R.
Stelzer, B.
Stelzer-Chilton, O.
Stentz, D.
Strologas, J.
Strycker, G. L.
Sudo, Y.
Sukhanov, A.
Suslov, I.
Takemasa, K.
Takeuchi, Y.
Tang, J.
Tecchio, M.
Teng, P. K.
Thom, J.
Thome, J.
Thompson, G. A.
Thomson, E.
Ttito-Guzman, P.
Tkaczyk, S.
Toback, D.
Tokar, S.
Tollefson, K.
Tomura, T.
Tonelli, D.
Torre, S.
Torretta, D.
Totaro, P.
Trovato, M.
Tu, Y.
Turini, N.
Ukegawa, F.
Uozumi, S.
Varganov, A.
Vataga, E.
Vazquez, F.
Velev, G.
Vellidis, C.
Vidal, M.
Vila, I.
Vilar, R.
Vogel, M.
Volpi, G.
Wagner, P.
Wagner, R. L.
Wakisaka, T.
Wallny, R.
Wang, S. M.
Warburton, A.
Waters, D.
Weinberger, M.
Wester, W. C., III
Whitehouse, B.
Whiteson, D.
Wicklund, A. B.
Wicklund, E.
Wilbur, S.
Wick, F.
Williams, H. H.
Wilson, J. S.
Wilson, P.
Winer, B. L.
Wittich, P.
Wolbers, S.
Wolfe, H.
Wright, T.
Wu, X.
Wu, Z.
Yamamoto, K.
Yamaoka, J.
Yang, T.
Yang, U. K.
Yang, Y. C.
Yao, W. -M.
Yeh, G. P.
Yi, K.
Yoh, J.
Yorita, K.
Yoshida, T.
Yu, G. B.
Yu, I.
Yu, S. S.
Yun, J. C.
Zanetti, A.
Zeng, Y.
Zucchelli, S.
TI Search for the supersymmetric partner of the top quark in p(p)over-bar
collisions at root s = 1.96 TeV
SO PHYSICAL REVIEW D
LA English
DT Article
ID SCALAR TOP; ROOT-S=1.96 TEV; PARTICLE PHYSICS; HADRON COLLIDERS; 2
LEPTONS; EVENTS
AB We present a search for the lightest supersymmetric partner of the top quark in proton-antiproton collisions at a center-of-mass energy root s = 1: 96 TeV. This search was conducted within the framework of the R parity conserving minimal supersymmetric extension of the standard model, assuming the stop decays dominantly to a lepton, a sneutrino, and a bottom quark. We searched for events with two oppositely-charged leptons, at least one jet, and missing transverse energy in a data sample corresponding to an integrated luminosity of 1 fb(-1) collected by the Collider Detector at Fermilab experiment. No significant evidence of a stop quark signal was found. Exclusion limits at 95% confidence level in the stop quark versus sneutrino mass plane are set. Stop quark masses up to 180 GeV/c(2) are excluded for sneutrino masses around 45 GeV/c(2), and sneutrino masses up to 116 GeV/c(2) are excluded for stop quark masses around 150 GeV/c(2).
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RP Aaltonen, T (reprint author), Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
RI Piacentino, Giovanni/K-3269-2015; Martinez Ballarin,
Roberto/K-9209-2015; Gorelov, Igor/J-9010-2015; Prokoshin,
Fedor/E-2795-2012; Canelli, Florencia/O-9693-2016; Moon,
Chang-Seong/J-3619-2014; Scodellaro, Luca/K-9091-2014; Paulini,
Manfred/N-7794-2014; Russ, James/P-3092-2014; unalan,
zeynep/C-6660-2015; Lazzizzera, Ignazio/E-9678-2015; vilar,
rocio/P-8480-2014; Cabrera Urban, Susana/H-1376-2015; Garcia, Jose
/H-6339-2015; ciocci, maria agnese /I-2153-2015; Cavalli-Sforza,
Matteo/H-7102-2015; Chiarelli, Giorgio/E-8953-2012; Introzzi,
Gianluca/K-2497-2015; Lysak, Roman/H-2995-2014; Ruiz,
Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco,
Sandro/B-1016-2012; St.Denis, Richard/C-8997-2012; manca,
giulia/I-9264-2012; Amerio, Silvia/J-4605-2012; Punzi,
Giovanni/J-4947-2012; Zeng, Yu/C-1438-2013; Annovi, Alberto/G-6028-2012;
Ivanov, Andrew/A-7982-2013; Warburton, Andreas/N-8028-2013; Kim,
Soo-Bong/B-7061-2014
OI Piacentino, Giovanni/0000-0001-9884-2924; Martinez Ballarin,
Roberto/0000-0003-0588-6720; Gorelov, Igor/0000-0001-5570-0133;
Prokoshin, Fedor/0000-0001-6389-5399; Canelli,
Florencia/0000-0001-6361-2117; Moon, Chang-Seong/0000-0001-8229-7829;
Scodellaro, Luca/0000-0002-4974-8330; Paulini,
Manfred/0000-0002-6714-5787; Russ, James/0000-0001-9856-9155; unalan,
zeynep/0000-0003-2570-7611; Lazzizzera, Ignazio/0000-0001-5092-7531;
ciocci, maria agnese /0000-0003-0002-5462; Chiarelli,
Giorgio/0000-0001-9851-4816; Introzzi, Gianluca/0000-0002-1314-2580;
Ruiz, Alberto/0000-0002-3639-0368; Punzi, Giovanni/0000-0002-8346-9052;
Annovi, Alberto/0000-0002-4649-4398; Ivanov, Andrew/0000-0002-9270-5643;
Warburton, Andreas/0000-0002-2298-7315;
FU U.S. Department of Energy; National Science Foundation; Italian Istituto
Nazionale di Fisica Nucleare; Ministry of Education, Culture, Sports,
Science and Technology of Japan; Natural Sciences and Engineering
Research Council of Canada; National Science Council of the Republic of
China; Swiss National Science Foundation; A.P. Sloan Foundation;
Bundesministerium fur Bildung und Forschung, Germany; National Research
Foundation of Korea; Science and Technology Facilities Council; Royal
Society, UK; Institut National de Physique Nucleaire et Physique des
Particules/CNRS; Russian Foundation for Basic Research; Ministerio de
Ciencia e Innovacion, Spain; Slovak RD Agency; Academy of Finland
FX We thank the Fermilab staff and the technical staffs of the
participating institutions for their vital contributions. This work was
supported by the U.S. Department of Energy and National Science
Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the
Ministry of Education, Culture, Sports, Science and Technology of Japan;
the Natural Sciences and Engineering Research Council of Canada; the
National Science Council of the Republic of China; the Swiss National
Science Foundation; the A.P. Sloan Foundation; the Bundesministerium fur
Bildung und Forschung, Germany; the World Class University Program, the
National Research Foundation of Korea; the Science and Technology
Facilities Council and the Royal Society, UK; the Institut National de
Physique Nucleaire et Physique des Particules/CNRS; the Russian
Foundation for Basic Research; the Ministerio de Ciencia e Innovacion,
and Programa Consolider-Ingenio 2010, Spain; the Slovak R&D Agency; and
the Academy of Finland.
NR 38
TC 14
Z9 14
U1 2
U2 16
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 2
PY 2010
VL 82
IS 9
AR 092001
DI 10.1103/PhysRevD.82.092001
PG 16
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 674BY
UT WOS:000283709700001
ER
PT J
AU Cumberbatch, DT
Guzik, JA
Silk, J
Watson, LS
West, SM
AF Cumberbatch, Daniel T.
Guzik, Joyce. A.
Silk, Joseph
Watson, L. Scott
West, Stephen M.
TI Light WIMPs in the Sun: Constraints from helioseismology
SO PHYSICAL REVIEW D
LA English
DT Article
ID SUPERSYMMETRIC DARK-MATTER; SOLAR-NEUTRINO FLUX; DEGREE P-MODES; MASSIVE
PARTICLES; CHEMICAL-COMPOSITION; ELEMENT DIFFUSION; SEPARATION RATIOS;
STELLAR EVOLUTION; ENERGY-TRANSPORT; MAIN SEQUENCE
AB We calculate solar models including dark matter (DM) weakly interacting massive particles (WIMPs) of mass 5-50 GeV and test these models against helioseismic constraints on sound speed, convection-zone depth, convection-zone helium abundance, and small separations of low-degree p-modes. Our main conclusion is that both direct detection experiments and particle accelerators may be complemented by using the Sun as a probe for WIMP DM particles in the 5-50 GeV mass range. The DM most sensitive to this probe has suppressed annihilations and a large spin-dependent elastic scattering cross section. For the WIMP cross section parameters explored here, the lightest WIMP masses <10 GeV are ruled out by constraints on core sound speed and low-degree frequency spacings. For WIMP masses 30-50 GeV, the changes to the solar structure are confined to the inner 4% of the solar radius and so do not significantly affect the solar p-modes. Future helioseismology observations, most notably involving g-modes, and future solar neutrino experiments may be able to constrain the allowable DM parameter space in a mass range that is of current interest for direct detection.
C1 [Cumberbatch, Daniel T.] Univ Sheffield, Dept Phys & Astron, Astroparticle Theory & Cosmol Grp, Sheffield S3 7RH, S Yorkshire, England.
[Guzik, Joyce. A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Silk, Joseph] Univ Oxford, Dept Phys, Oxford OX1 3RH, England.
[Watson, L. Scott] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[West, Stephen M.] Univ London, Egham TW20 0EX, Surrey, England.
[West, Stephen M.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
RP Cumberbatch, DT (reprint author), Univ Sheffield, Dept Phys & Astron, Astroparticle Theory & Cosmol Grp, Hicks Bldg,Hounsfield Rd, Sheffield S3 7RH, S Yorkshire, England.
EM D.Cumberbatch@sheffield.ac.uk; joy@lanl.gov; j.silk1@physics.ox.ac.uk;
LSWATSO@SANDIA.GOV.USA; stephen.west@rhul.ac.uk
OI West, Stephen/0000-0002-1666-9417; silk, joe/0000-0002-1566-8148
FU Science and Technology Facilities Council; Higher Education Funding
Council for England under the SEPNet Initiative; Science and Technology
Facilities Council under the SEPNet Initiative
FX D. T. C. is supported by the Science and Technology Facilities Council.
S. M. W. thanks the Oxford Physics Department for hospitality, and the
Higher Education Funding Council for England and the Science and
Technology Facilities Council for financial support under the SEPNet
Initiative.
NR 81
TC 40
Z9 40
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 2
PY 2010
VL 82
IS 10
AR 103503
DI 10.1103/PhysRevD.82.103503
PG 9
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 674CA
UT WOS:000283709900004
ER
PT J
AU Holsclaw, T
Alam, U
Sanso, B
Lee, H
Heitmann, K
Habib, S
Higdon, D
AF Holsclaw, Tracy
Alam, Ujjaini
Sanso, Bruno
Lee, Herbert
Heitmann, Katrin
Habib, Salman
Higdon, David
TI Nonparametric reconstruction of the dark energy equation of state
SO PHYSICAL REVIEW D
LA English
DT Article
ID MATTER POWER SPECTRUM; DIGITAL SKY SURVEY; IA SUPERNOVA DATA;
COSMOLOGICAL CONSTANT; ACCELERATING UNIVERSE; LIGHT CURVES; CONSTRAINTS;
REDSHIFT; QUINTESSENCE; EXPANSION
AB A basic aim of ongoing and upcoming cosmological surveys is to unravel the mystery of dark energy. In the absence of a compelling theory to test, a natural approach is to better characterize the properties of dark energy in search of clues that can lead to a more fundamental understanding. One way to view this characterization is the improved determination of the redshift-dependence of the dark energy equation of state parameter, w(z). To do this requires a robust and bias-free method for reconstructing w(z) from data that does not rely on restrictive expansion schemes or assumed functional forms for w(z). We present a new nonparametric reconstruction method that solves for w(z) as a statistical inverse problem, based on a Gaussian process representation. This method reliably captures nontrivial behavior of w(z) and provides controlled error bounds. We demonstrate the power of the method on different sets of simulated supernova data; the approach can be easily extended to include diverse cosmological probes.
C1 [Holsclaw, Tracy; Sanso, Bruno; Lee, Herbert] Univ Calif Santa Cruz, Dept Appl Math & Stat, Santa Cruz, CA 95064 USA.
[Alam, Ujjaini; Heitmann, Katrin; Habib, Salman; Higdon, David] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Holsclaw, T (reprint author), Univ Calif Santa Cruz, Dept Appl Math & Stat, Santa Cruz, CA 95064 USA.
FU Los Alamos National Laboratory (LANL) Institute for Scalable Scientific
Data Management; DOE [W-7405-ENG-36]; Los Alamos National Laboratory;
NASA
FX The authors acknowledge support from the Los Alamos National Laboratory
(LANL) Institute for Scalable Scientific Data Management. Part of this
research was supported by the DOE under Contract No. W-7405-ENG-36. U.
A., S. H., K. H., and D. H. acknowledge support from the Laboratory
Directed Research and Development (LDRD) program at the Los Alamos
National Laboratory. K. H. acknowledges support from NASA. S. H. and K.
H. acknowledge the hospitality of the Aspen Center for Physics, where
part of this work was carried out. We are indebted to Andreas Albrecht,
Eric Linder, Adrian Pope, Martin White, and Michael Wood-Vasey for
several useful discussions.
NR 54
TC 32
Z9 32
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD NOV 2
PY 2010
VL 82
IS 10
AR 103502
DI 10.1103/PhysRevD.82.103502
PG 16
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 674CA
UT WOS:000283709900003
ER
PT J
AU Lindemuth, IR
Siemon, RE
Bauer, BS
Angelova, MA
Atchison, WL
AF Lindemuth, Irvin R.
Siemon, Richard E.
Bauer, Bruno S.
Angelova, Milena A.
Atchison, Walter L.
TI Computational Interpretation of Megagauss-Magnetic-Field-Induced
Metallic Surface Plasma Initiation and Evolution
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
AB Numerical simulations of experiments in which plasma is formed on an aluminum surface by megagauss magnetic fields provide the first computational demonstration of a magnetic-field threshold that must be reached for aluminum plasma to begin to form. The computed times of plasma initiation agree reasonably well with the observations across the full range of rod diameters, leading to the conclusion that plasma formation is a thermal process. Computationally, plasma forms first in low-density material that is resistive enough to expand across the magnetic field and yet conductive enough that Ohmic heating exceeds expansion cooling.
C1 [Lindemuth, Irvin R.; Siemon, Richard E.; Bauer, Bruno S.; Angelova, Milena A.] Univ Nevada, Reno, NV 89557 USA.
[Atchison, Walter L.] Los Alamos Natl Lab, Los Alamos, NM USA.
RP Lindemuth, IR (reprint author), Univ Nevada, Reno, NV 89557 USA.
FU DOE [DE-FG02-04ER54752, DE-FG02-06ER54892, DE-FC52-01NV14050]
FX We acknowledge informative discussions and/or communications with T.
Awe, S. Fuelling, S. Garanin, R. Reinovsky, V. Makhin, M. Frese, S.
Kuznetsov, S. Rosenthal, and J. Chittenden. This research was supported
by DOE Grants No. DE-FG02-04ER54752, No. DE-FG02-06ER54892, and No.
DE-FC52-01NV14050.
NR 10
TC 5
Z9 6
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD NOV 2
PY 2010
VL 105
IS 19
AR 195004
DI 10.1103/PhysRevLett.105.195004
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 674CJ
UT WOS:000283711000004
PM 21231175
ER
PT J
AU Angel, TE
Luft, BJ
Yang, XH
Nicora, CD
Camp, DG
Jacobs, JM
Smith, RD
AF Angel, Thomas E.
Luft, Benjamin J.
Yang, Xiaohua
Nicora, Carrie D.
Camp, David G., II
Jacobs, Jon M.
Smith, Richard D.
TI Proteome Analysis of Borrelia burgdorferi Response to Environmental
Change
SO PLOS ONE
LA English
DT Article
ID LYME-DISEASE SPIROCHETE; OUTER SURFACE PROTEIN; HOST-SPECIFIC SIGNALS;
GENE-EXPRESSION; MAMMALIAN HOST; INFECTIOUS CYCLE; FACTOR-H; BINDING;
TRANSCRIPTOME; REGULATOR
AB We examined global changes in protein expression in the B31 strain of Borrelia burgdorferi, in response to two environmental cues (pH and temperature) chosen for their reported similarity to those encountered at different stages of the organism's life cycle. Multidimensional nano-liquid chromatographic separations coupled with tandem mass spectrometry were used to examine the array of proteins (i.e., the proteome) of B. burgdorferi for different pH and temperature culture conditions. Changes in pH and temperature elicited in vitro adaptations of this spirochete known to cause Lyme disease and led to alterations in protein expression that are associated with increased microbial pathogenesis. We identified 1,031 proteins that represent 59% of the annotated genome of B. burgdorferi and elucidated a core proteome of 414 proteins that were present in all environmental conditions investigated. Observed changes in protein abundances indicated varied replicon usage, as well as proteome functional distributions between the in vitro cell culture conditions. Surprisingly, the pH and temperature conditions that mimicked B. burgdorferi residing in the gut of a fed tick showed a marked reduction in protein diversity. Additionally, the results provide us with leading candidates for exploring how B. burgdorferi adapts to and is able to survive in a wide variety of environmental conditions and lay a foundation for planned in situ studies of B. burgdorferi isolated from the tick midgut and infected animals.
C1 [Angel, Thomas E.; Nicora, Carrie D.; Camp, David G., II; Jacobs, Jon M.; Smith, Richard D.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA.
[Luft, Benjamin J.; Yang, Xiaohua] SUNY Stony Brook, Sch Med, Div Infect Dis, Stony Brook, NY 11794 USA.
RP Angel, TE (reprint author), Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA.
EM rds@pnl.gov
RI Smith, Richard/J-3664-2012;
OI Smith, Richard/0000-0002-2381-2349; Luft, Benjamin/0000-0001-9008-7004
FU National Institutes of Health (NIH) [U01-AI56480]; National Center for
Research Resources [RR18522]
FX Portions of this research were supported by National Institutes of
Health (NIH) grant U01-AI56480 (to BJL) and the National Center for
Research Resources (RR18522 to RDS). The funders had no role in study
design, data collection and analysis, decision to publish, or
preparation of the manuscript.
NR 38
TC 18
Z9 18
U1 1
U2 9
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA
SN 1932-6203
J9 PLOS ONE
JI PLoS One
PD NOV 2
PY 2010
VL 5
IS 11
AR e13800
DI 10.1371/journal.pone.0013800
PG 9
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 674VY
UT WOS:000283779700012
PM 21072190
ER
PT J
AU Nakajo, K
Ulbrich, MH
Kubo, Y
Isacoff, EY
AF Nakajo, Koichi
Ulbrich, Maximilian H.
Kubo, Yoshihiro
Isacoff, Ehud Y.
TI Stoichiometry of the KCNQ1-KCNE1 ion channel complex
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE GFP; single molecule fluorescence; potassium channel; subunit counting;
gating
ID KCNQ1 POTASSIUM CHANNEL; DEPENDENT K+ CHANNEL; VOLTAGE SENSOR;
CRYSTAL-STRUCTURE; MEMBRANE-PROTEIN; MOLECULAR-BASIS; KCNE1; SUBUNIT;
MODULATION; TRAFFICKING
AB The KCNQ1 voltage-gated potassium channel and its auxiliary subunit KCNE1 play a crucial role in the regulation of the heartbeat. The stoichiometry of KCNQ1 and KCNE1 complex has been debated, with some results suggesting that the four KCNQ1 subunits that form the channel associate with two KCNE1 subunits (a 4: 2 stoichiometry), while others have suggested that the stoichiometry may not be fixed. We applied a single molecule fluorescence bleaching method to count subunits in many individual complexes and found that the stoichiometry of the KCNQ1 - KCNE1 complex is flexible, with up to four KCNE1 subunits associating with the four KCNQ1 subunits of the channel (a 4: 4 stoichiometry). The proportion of the various stoichiometries was found to depend on the relative expression densities of KCNQ1 and KCNE1. Strikingly, both the voltage-dependence and kinetics of gating were found to depend on the relative densities of KCNQ1 and KCNE1, suggesting the heart rhythm may be regulated by the relative expression of the auxiliary subunit and the resulting stoichiometry of the channel complex.
C1 [Nakajo, Koichi; Ulbrich, Maximilian H.; Isacoff, Ehud Y.] Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA.
[Nakajo, Koichi; Kubo, Yoshihiro] Natl Inst Physiol Sci, Div Biophys & Neurobiol, Okazaki, Aichi 4448585, Japan.
[Nakajo, Koichi; Kubo, Yoshihiro] Grad Univ Adv Studies SOKENDAI, Dept Physiol Sci, Kanagawa 2400193, Japan.
[Isacoff, Ehud Y.] Univ Calif Berkeley, Helen Wills Neurosci Inst, Berkeley, CA 94720 USA.
[Isacoff, Ehud Y.] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
RP Isacoff, EY (reprint author), Univ Calif Berkeley, Dept Mol & Cell Biol, 229 Stanley Hall, Berkeley, CA 94720 USA.
EM ehud@berkeley.edu
RI Nakajo, Koichi/H-4104-2011
FU Ministry of Education, Culture, Sports, Science, and Technology of Japan
[20790184]; National Institutes of Health [R01 NS35549]
FX We thank S. Wiese and Y. Asai for valuable technical assistance. We
thank T. Takumi (Hiroshima University) for the cDNA of rat KCNE1 and T.
Hoshi (University of Pennsylvania) for the cDNA of human KCNQ1 channel.
This work was supported by research grants from the Ministry of
Education, Culture, Sports, Science, and Technology of Japan (20790184
to K.N.) and the National Institutes of Health (R01 NS35549 to E.Y.I).
NR 44
TC 78
Z9 80
U1 1
U2 19
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD NOV 2
PY 2010
VL 107
IS 44
BP 18862
EP 18867
DI 10.1073/pnas.1010354107
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 674MJ
UT WOS:000283749000026
PM 20962273
ER
PT J
AU Miller, MB
Luebke, DR
Enick, RM
AF Miller, Matthew B.
Luebke, David R.
Enick, Robert M.
TI CO2-philic Oligomers as Novel Solvents for CO2 Absorption
SO ENERGY & FUELS
LA English
DT Article
ID SUPERCRITICAL CARBON-DIOXIDE; HIGH-PRESSURE CO2; PHASE-BEHAVIOR;
SOLUBILITY; MIXTURES; POLYMERS; RHEOLOGY; GLYCOL); WATER
AB Desirable properties for an oligomenc CO2-capture solvent in an integrated gasification combined cycle (IGCC) plant include high selectivity for CO2 over H-2 and water, low viscosity, low vapor pressure low cost, and minimal environmental, health, and safety Impacts The neat solvent viscosity and solubility of CO2, measured via bubble point loci and presented on a pressure-composition diagram (weight basis), and water miscibility in CO2-philic solvents have been determined and compared to results obtained with Selexol, a commercial oligomenc CO2 solvent The solvents tested include polyethyleneglycol dimethyl ether (PEGDME), polypropyleneglycol dimethylether (PPGDME), polypropyleneglycol diacetate (PPG DAc), polybutyleneglycol diacetate (PBGDAc), polytetramethyleneetherglycol chacetate (PTMEGDAc), glyceryl tnacetate (GTA), polychmethyl siloxane (PDMS), and perfluorpolyether (PFPE) that has a perfluonnated propyleneglycol monomer unit Overall, PDMS and PPGDME are the best oligomenc solvents tested and exhibit properties that make them very promising alternatives for the selective absorption of CO2 from a mixed gas stream, especially if the absorption of water is undesirable
C1 [Miller, Matthew B.; Luebke, David R.; Enick, Robert M.] Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
[Miller, Matthew B.; Enick, Robert M.] Univ Pittsburgh, Dept Chem Engn, Pittsburgh, PA 15261 USA.
RP Miller, MB (reprint author), Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
FU National Energy Technology Laboratory [DE AC26 04NT41817]
FX The authors thank Bayer Material Science and GE Global for assistance
with synthesis work assisted by them and Huntsman International LLC for
supplying samples of PBG used as a starting material This work was
performed in support of the ongoing research in the area of carbon
management by the National Energy Technology Laboratory under the RDS
contract DE AC26 04NT41817
NR 29
TC 26
Z9 26
U1 2
U2 33
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0887-0624
J9 ENERG FUEL
JI Energy Fuels
PD NOV
PY 2010
VL 24
BP 6214
EP 6219
DI 10.1021/ef101123e
PG 6
WC Energy & Fuels; Engineering, Chemical
SC Energy & Fuels; Engineering
GA 694AE
UT WOS:000285265800048
ER
PT J
AU Wilson, AG
Anderson-Cook, CM
AF Wilson, Alyson G.
Anderson-Cook, Christine M.
TI Reliability Growth Management Metrics and Statistical Methods for
Discrete-Use Systems Comment
SO TECHNOMETRICS
LA English
DT Editorial Material
ID RESOURCE-ALLOCATION
C1 [Wilson, Alyson G.] Iowa State Univ, Dept Stat, Ames, IA 50011 USA.
[Anderson-Cook, Christine M.] Los Alamos Natl Lab, Stat Sci Grp, Los Alamos, NM 87545 USA.
RP Wilson, AG (reprint author), Iowa State Univ, Dept Stat, Ames, IA 50011 USA.
EM agw@iastate.edu; c-and-cook@lanl.gov
OI Wilson, Alyson/0000-0003-1461-6212
NR 6
TC 0
Z9 0
U1 0
U2 0
PU AMER STATISTICAL ASSOC
PI ALEXANDRIA
PA 732 N WASHINGTON ST, ALEXANDRIA, VA 22314-1943 USA
SN 0040-1706
J9 TECHNOMETRICS
JI Technometrics
PD NOV
PY 2010
VL 52
IS 4
BP 397
EP 400
DI 10.1198/TECH.2010.09178
PG 4
WC Statistics & Probability
SC Mathematics
GA 698BB
UT WOS:000285565400007
ER
PT J
AU Weyens, N
Schellingen, K
Dupae, J
Croes, S
van der Lelie, D
Vangronsveld, J
AF Weyens, N.
Schellingen, K.
Dupae, J.
Croes, S.
van der Lelie, D.
Vangronsveld, J.
TI Can bacteria associated with willow explain differences in
Cd-accumulation capacity between different cultivars?
SO JOURNAL OF BIOTECHNOLOGY
LA English
DT Meeting Abstract
CT 14th International Biotechnology Symposium and Exhibition (IBS-2008)
CY SEP 14-18, 2010
CL Rimini, ITALY
DE phytoremediation; Cadmium; willow; plant-associated bacteria
C1 [Weyens, N.; Schellingen, K.; Dupae, J.; Croes, S.; Vangronsveld, J.] Hasselt Univ, Hasselt, Belgium.
[van der Lelie, D.] Brookhaven Natl Labs, Upton, NY USA.
NR 0
TC 0
Z9 0
U1 0
U2 16
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-1656
J9 J BIOTECHNOL
JI J. Biotechnol.
PD NOV
PY 2010
VL 150
SU 1
BP S291
EP S292
DI 10.1016/j.jbiotec.2010.09.237
PG 2
WC Biotechnology & Applied Microbiology
SC Biotechnology & Applied Microbiology
GA 741OQ
UT WOS:000288873401415
ER
PT J
AU Weyens, N
Dupae, J
van der Lelie, D
Newman, L
Taghavi, S
Vangronsveld, J
AF Weyens, N.
Dupae, J.
van der Lelie, D.
Newman, L.
Taghavi, S.
Vangronsveld, J.
TI Endophytic bacteria strongly reduce TCE evapotranspiration during
phytoremediation in the field
SO JOURNAL OF BIOTECHNOLOGY
LA English
DT Meeting Abstract
CT 14th International Biotechnology Symposium and Exhibition (IBS-2008)
CY SEP 14-18, 2010
CL Rimini, ITALY
DE Phytoremediation; TCE; Poplar; Endophytes
C1 [Weyens, N.; Dupae, J.; Vangronsveld, J.] Hasselt Univ, Hasselt, Belgium.
[van der Lelie, D.; Newman, L.; Taghavi, S.] Brookhaven Natl Labs, Upton, NY USA.
NR 0
TC 1
Z9 1
U1 2
U2 22
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-1656
J9 J BIOTECHNOL
JI J. Biotechnol.
PD NOV
PY 2010
VL 150
SU 1
BP S51
EP S51
DI 10.1016/j.jbiotec.2010.08.136
PG 1
WC Biotechnology & Applied Microbiology
SC Biotechnology & Applied Microbiology
GA 741OQ
UT WOS:000288873400120
ER
PT J
AU Widder, S
AF Widder, Sarah
TI Benefits and concerns of a closed nuclear fuel cycle
SO JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY
LA English
DT Article
ID ENERGY
AB Nuclear power can play an important role in our energy future, helping to meet increasing electricity demand while at the same time decreasing carbon dioxide emissions. However, the nuclear fuel cycle in the United States today is unsustainable. The 1982 Nuclear Waste Policy Act establishes the U. S. Department of Energy as responsible for disposing of spent nuclear fuel (SNF) generated by commercial nuclear power plants operating in a "once-through" fuel cycle in a deep geologic repository located at Yucca Mountain, NV. However, unyielding political opposition to the Yucca Mountain site has hindered the commissioning process to the extent that the current administration has recently declared the site unsuitable. In light of this, the DOE is exploring other options, including closing the fuel cycle through reprocessing and recycling of spent nuclear fuel. The possibility of closing the fuel cycle is receiving special attention because of its ability to minimize the final high level waste package by separating and isolating the most long-lived components, as well as recovering additional energy value from the original fuel. Reprocessing and recycling of SNF can decrease the volume of waste stored by a factor of 4 and reduce the timeframe of storage from hundreds of thousands of years to thousands of years. Reprocessing and recycling technologies are, however, still very controversial because of the increased cost and proliferation risk reprocessing can present. Estimates of increases in the levelized cost of electricity with reprocessing range from about 10% to 50% due to large uncertainties in the financing, construction, and licensing of a new plant. Ultimately, the U. S. will need to compare each of these fuel cycle options with respect to sustainability, proliferation risk, commercial viability, waste management, and energy security to define the future of nuclear power. c 2010 American Institute of Physics. [doi:10.1063/1.3506839]
C1 Pacific NW Natl Lab, Energy & Environm Directorate, Richland, WA 99354 USA.
RP Widder, S (reprint author), Pacific NW Natl Lab, Energy & Environm Directorate, 902 Battelle Blvd,POB 999,MSIN K6-05, Richland, WA 99354 USA.
NR 31
TC 3
Z9 3
U1 2
U2 16
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1941-7012
J9 J RENEW SUSTAIN ENER
JI J. Renew. Sustain. Energy
PD NOV 1
PY 2010
VL 2
IS 6
AR 062801
DI 10.1063/1.3506839
PG 10
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels
SC Science & Technology - Other Topics; Energy & Fuels
GA 729CW
UT WOS:000287926900001
ER
PT J
AU Szabo, P
Girovsky, J
Pribulova, Z
Samuely, T
Bud'ko, SL
Canfield, PC
Samuely, P
AF Szabo, P.
Girovsky, J.
Pribulova, Z.
Samuely, T.
Bud'ko, S. L.
Canfield, P. C.
Samuely, P.
TI Point Contact Spectroscopy Measurements of Ba(Fe-0 Co-96(0) (04))(2)As-2
Single Crystals
SO ACTA PHYSICA POLONICA A
LA English
DT Article; Proceedings Paper
CT 14th Czech and Slovak Conference on Magnetism
CY JUN 06-09, 2010
CL Kosice, SLOVAKIA
SP Safarik Univ, Fac Sci, Inst Phys, Slovak Acad Sci, Slovak Phys Soc
AB Point contact spectroscopy results are presented on the electron underdoped Ba(Fe-0 Co-96(0) (04))(2)As-2 single crystals Two superconducting energy gaps with coupling values 2 Delta(1) similar to kT(c) approximate to 2 55 and 2 Delta(2) similar to kT(c) approximate to 11 at T-c = 15 5 K have been observed in the point contact spectra The temperature dependence of the normal state background of the point contact spectra observed between T-c and T-N indicates antiferromagnetic origin of the V-shaped minimum at zero bias
C1 [Szabo, P.; Girovsky, J.; Pribulova, Z.; Samuely, T.; Samuely, P.] IEP Slovak Acad Sci, Ctr Low Temp Phys, SK-04353 Kosice, Slovakia.
[Szabo, P.; Girovsky, J.; Pribulova, Z.; Samuely, T.; Samuely, P.] Safarik Univ, SK-04353 Kosice, Slovakia.
[Bud'ko, S. L.; Canfield, P. C.] Ames Lab, Ames, IA 50011 USA.
[Bud'ko, S. L.; Canfield, P. C.] Iowa State Univ, Ames, IA 50011 USA.
RP Szabo, P (reprint author), IEP Slovak Acad Sci, Ctr Low Temp Phys, Watsonova 47, SK-04353 Kosice, Slovakia.
RI Canfield, Paul/H-2698-2014; Samuely, Tomas/R-8563-2016
OI Samuely, Tomas/0000-0001-5618-6965
NR 8
TC 0
Z9 0
U1 0
U2 1
PU POLISH ACAD SCIENCES INST PHYSICS
PI WARSAW
PA AL LOTNIKOW 32-46, PL-02-668 WARSAW, POLAND
SN 0587-4246
J9 ACTA PHYS POL A
JI Acta Phys. Pol. A
PD NOV
PY 2010
VL 118
IS 5
BP 1045
EP 1046
PG 2
WC Physics, Multidisciplinary
SC Physics
GA 701EM
UT WOS:000285797100137
ER
PT J
AU Findeisen, F
Minor, DL
AF Findeisen, Felix
Minor, Daniel L., Jr.
TI Progress in the structural understanding of voltage-gated calcium
channel (Ca-V) function and modulation
SO CHANNELS
LA English
DT Article
DE voltage-gated calcium channel; X-ray crystallography; calcium-dependent
inactivation; calcium-dependent facilitation; voltage-dependent
inactivation; calmodulin; CaBP1; RGK proteins
ID MUSCLE DIHYDROPYRIDINE RECEPTOR; VISININ-LIKE PROTEIN-2; AUDITORY
HAIR-CELLS; BETA-SUBUNIT; DEPENDENT INACTIVATION; CRYSTAL-STRUCTURE;
CA(V)2.1 CHANNELS; CA2+-DEPENDENT INACTIVATION; ELECTRON CRYOMICROSCOPY;
3-DIMENSIONAL STRUCTURE
AB Voltage-gated calcium channels (Ca(V)s) are large, transmembrane multiprotein complexes that couple membrane depolarization to cellular calcium entry. These channels are central to cardiac action potential propagation, neurotransmitter and hormone release, muscle contraction and calcium-dependent gene transcription. Over the past six years, the advent of high-resolution structural studies of Ca-V components from different isoforms and Ca-V modulators has begun to reveal the architecture that underlies the exceptionally rich feedback modulation that controls Ca-V action. These descriptions of Ca-V molecular anatomy have provided new, structure-based insights into the mechanisms by which particular channel elements affect voltage-dependent inactivation (VDI), calcium-dependent inactivation (CDI) and calcium-dependent facilitation (CDF). The initial successes have been achieved through structural studies of soluble channel domains and modulator proteins and have proven most powerful when paired with biochemical and functional studies that validate ideas inspired by the structures. Here, we review the progress in this growing area and highlight some key open challenges for future efforts.
C1 [Findeisen, Felix; Minor, Daniel L., Jr.] Univ Calif San Francisco, Cardiovasc Res Inst, San Francisco, CA 94143 USA.
[Minor, Daniel L., Jr.] Univ Calif San Francisco, Dept Biochem & Biophys, San Francisco, CA 94143 USA.
[Minor, Daniel L., Jr.] Univ Calif San Francisco, Dept Cellular & Mol Pharmacol, San Francisco, CA 94143 USA.
[Minor, Daniel L., Jr.] Univ Calif San Francisco, Calif Inst Quantitat Biomed Res, San Francisco, CA 94143 USA.
[Minor, Daniel L., Jr.] Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA USA.
RP Minor, DL (reprint author), Univ Calif San Francisco, Cardiovasc Res Inst, San Francisco, CA 94143 USA.
EM Daniel.Minor@ucsf.edu
FU NIH [HL080050, NS065448]; American Heart Association [0740019N]
FX We thank A. Tolia for comments on the manuscript. This work was
supported by grants to Daniel L. Minor from NIH (HL080050, NS065448) and
the American Heart Association (0740019N). Daniel L. Minor is an AHA
Established Investigator.
NR 145
TC 12
Z9 12
U1 3
U2 6
PU LANDES BIOSCIENCE
PI AUSTIN
PA 1806 RIO GRANDE ST, AUSTIN, TX 78702 USA
SN 1933-6950
J9 CHANNELS
JI Channels
PD NOV-DEC
PY 2010
VL 4
IS 6
BP 459
EP 474
DI 10.4161/chan.4.6.12867
PG 16
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 725QO
UT WOS:000287661000006
PM 21139419
ER
PT J
AU Aydin, A
Berryman, JG
AF Aydin, Atilla
Berryman, James G.
TI Analysis of the growth of strike-slip faults using effective medium
theory
SO JOURNAL OF STRUCTURAL GEOLOGY
LA English
DT Article
DE Fault growth; Fault scaling; Fault linkage and coalescence; Fault damage
zone; Cataclastic deformation; Effective moduli; Effective medium model
ID SHEAR FRACTURE PROPAGATION; MOUNT ABBOT QUADRANGLE; EN-ECHELON FAULTS;
MECHANICAL INTERACTION; EARTHQUAKE RUPTURES; ELASTIC-CONSTANTS; SEGMENT
LINKAGE; SIERRA-NEVADA; DAMAGE ZONES; RELAY RAMPS
AB Increases in the dimensions of strike-slip faults including fault length, thickness of fault rock and the surrounding damage zone collectively provide quantitative definition of fault growth and are commonly measured in terms of the maximum fault slip. The field observations indicate that a common mechanism for fault growth in the brittle upper crust is fault lengthening by linkage and coalescence of neighboring fault segments or strands, and fault rock-zone widening into highly fractured inner damage zone via cataclastic deformation. The most important underlying mechanical reason in both cases is prior weakening of the rocks surrounding a fault's core and between neighboring fault segments by faulting-related fractures. In this paper, using field observations together with effective medium models, we analyze the reduction in the effective elastic properties of rock in terms of density of the fault-related brittle fractures and fracture intersection angles controlled primarily by the splay angles. Fracture densities or equivalent fracture spacing values corresponding to the vanishing Young's, shear, and quasi-pure shear moduli were obtained by extrapolation from the calculated range of these parameters. The fracture densities or the equivalent spacing values obtained using this method compare well with the field data measured along scan lines across the faults in the study area. These findings should be helpful for a better understanding of the fracture density/spacing distribution around faults and the transition from discrete fracturing to cataclastic deformation associated with fault growth and the related instabilities. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Aydin, Atilla] Stanford Univ, Dept Geol & Environm Sci, Rock Fracture Project, Stanford, CA 94305 USA.
[Berryman, James G.] Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA USA.
RP Aydin, A (reprint author), Stanford Univ, Dept Geol & Environm Sci, Rock Fracture Project, Stanford, CA 94305 USA.
EM aydin@stanford.edu
FU US DOE Basic Energy Science, Division of Chemical Sciences, Geosciences
and BioSciences [DE-FG03-94ER14462]; US DOE by the University of
California Lawrence Berkeley National Laboratory [DE-ACO2-05CH11231];
Valley of Fire State Park personnel
FX The works at the Valley of Fire State Park by many former graduate
students and postdocs who studied with A. Aydin at Stanford University
formed the foundation for establishing the conceptual models in this
paper. Among these, Ghislain de Joussineau's work has been heavily
relied upon. A partial list of other students and postdocs includes R.
Myers, E. Flodin, N. Davatzes, and P. Eichhubl. A. Aydin is supported by
the US DOE Basic Energy Science, Division of Chemical Sciences,
Geosciences and BioSciences, Grant no. DE-FG03-94ER14462. Work of J.G.
Berryman performed under auspices of the US DOE by the University of
California Lawrence Berkeley National Laboratory under contract no.
DE-ACO2-05CH11231. A. Aydin is grateful to the Valley of Fire State Park
personnel for their support of the field campaigns through many years.
Comments by Christopher Wibberley, Roy Schliche, Zoe Shipton, and Roger
Soliva improved the manuscript.
NR 89
TC 13
Z9 13
U1 3
U2 25
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0191-8141
J9 J STRUCT GEOL
JI J. Struct. Geol.
PD NOV
PY 2010
VL 32
IS 11
SI SI
BP 1629
EP 1642
DI 10.1016/j.jsg.2009.11.007
PG 14
WC Geosciences, Multidisciplinary
SC Geology
GA 707KJ
UT WOS:000286284900007
ER
PT J
AU Caster, AG
Kowarik, S
Schwartzberg, AM
Leone, SR
Tivanski, A
Gilles, MK
AF Caster, Allison G.
Kowarik, Stefan
Schwartzberg, Adam M.
Leone, Stephen R.
Tivanski, Alexei
Gilles, Mary K.
TI Quantifying reaction spread and x-ray exposure sensitivity in hydrogen
silsesquioxane latent resist patterns with x-ray spectromicroscopy
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article
ID ELECTRON-BEAM LITHOGRAPHY; ABSORPTION FINE-STRUCTURE; ADVANCED
LIGHT-SOURCE; MEAN FREE PATHS; ZONE PLATES; STRUCTURE NEXAFS; POROUS
SILICON; FABRICATION; HSQ; CONTRAST
AB Direct-write soft x-ray lithography with an similar to 50 nm diameter beam is used to pattern features in hydrogen silsesquioxane (HSQ) thin films. Scanning transmission x-ray microscopy of the undeveloped patterns (latent patterns) at the oxygen K-edge reveals a two-stage cross-linking mechanism. Oxygen and silicon near edge x-ray absorption fine structure spectra of latent patterns show an increase in oxygen content and no change in silicon content within exposed regions. A dose and thickness dependent spatial spread of the cross-linking reaction beyond the exposure boundaries is observed and quantified in detail. Strong area-dependent exposure sensitivity (attributed to cross-linking beyond the exposed region) is observed in latent patterns. A lateral spread in the cross-linking of >70 nm (full width at half maximum) is observed on both sides of the lines created with 580 eV x-rays (lambda=2.14 nm) in 330 +/- 50 nm thick HSQ films at low dose (0.6 +/- 0.3 MGy, 27 +/- 12 mJ/cm(2)) (1 MGy=10(6) J/kg absorbed energy). At a higher dose (111 +/- 29 MGy, 5143 +/- 1027 mJ/cm(2)), this spread increased to 150 nm. Preliminary results indicate that latent line widths increased with increasing delay between film spin-coating and exposure. Sharper lines are observed after room temperature development of the latent HSQ patterns in NaOH/NaCl solution (onset dose of 3.9 +/- 1.0 MGy, 181 +/- 36 mJ/cm(2)) due to the removal of material below a critical degree of cross-linking. Given the short range of low energy secondary electrons in condensed media (<10 nm at <= 580 eV), the observed spread is likely due to the propagation of reactive ions or radicals beyond the exposed regions. (C) 2010 American Vacuum Society. [DOI: 10.1116/1.3514124]
C1 [Caster, Allison G.; Kowarik, Stefan; Schwartzberg, Adam M.; Leone, Stephen R.; Tivanski, Alexei; Gilles, Mary K.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
[Caster, Allison G.; Kowarik, Stefan; Schwartzberg, Adam M.; Leone, Stephen R.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Caster, Allison G.; Kowarik, Stefan; Schwartzberg, Adam M.; Leone, Stephen R.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RP Caster, AG (reprint author), Univ Colorado Denver, Dept Bioengn, Aurora, CO 80045 USA.
EM srl@berkeley.edu
RI Kowarik, Stefan/P-5059-2014; Kowarik, Stefan/C-7676-2014
FU Chemical Sciences Division; Laboratory Directed Research and
Development; Material Sciences Division of Lawrence Berkeley National
Laboratory; Director, Office of Science, Office of Basic Energy
Sciences, U.S. Department of Energy [DE-AC02-05CH11231]; NSF ERC
[EEC-0310717)]; Alexander von Humboldt Foundation
FX The authors sincerely thank Deirdre L. Olynick, Monika Fleischer, Adam
Leontowich, Adam P. Hitchcock, and T. Don Tilley for the discussion of
HSQ lithography and mechanisms. They also thank A. L. David Kilcoyne for
many hours of support in designing the STXM experiments, Chris J. Hahn
for SEM measurements, and Stefan Pastine for the discussion of
mechanisms and chemicals for inhibitor experiments. Salary support was
provided by the Chemical Sciences Division (M.K.G. and S.R.L.),
Laboratory Directed Research and Development (A.G.C.), and the Material
Sciences Division (A.G.C. and A.V.T.) of Lawrence Berkeley National
Laboratory. These divisions, as well as the Advanced Light Source, were
supported by the Director, Office of Science, Office of Basic Energy
Sciences, U.S. Department of Energy, under Contract No.
DE-AC02-05CH11231. X-ray materials research and S.K.'s salary were
supported by the NSF ERC for Extreme Ultraviolet Science and Technology
(Contract No. EEC-0310717) and the Alexander von Humboldt Foundation.
NR 65
TC 5
Z9 5
U1 0
U2 8
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD NOV
PY 2010
VL 28
IS 6
BP 1304
EP 1313
DI 10.1116/1.3514124
PG 10
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 690OX
UT WOS:000285015200167
ER
PT J
AU Burckel, DB
Washburn, CM
Koleske, DD
Polsky, R
AF Burckel, D. B.
Washburn, C. M.
Koleske, D. D.
Polsky, R.
TI Pyrolysis of two-dimensional and three-dimensional interferometrically
patterned resist structures
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article
ID CARBON; FABRICATION
AB Interferometric lithography was used to create a wide variety of two-dimensional and three-dimensional patterns in standard photoresist. The patterns were then converted to amorphous carbon structures through pyrolysis in a reducing atmosphere. The structures maintain their fundamental in-plane morphology despite undergoing significant shrinkage. As an indication of their functionality, the authors highlight their use in two diverse applications: (1) as a defect reduction mask in metal-organic chemical vapor deposition growth of gallium nitride (GaN) on sapphire and (2) as a nanoparticle decorated electrode for catalytic oxidation of methanol. (C) 2010 American Vacuum Society. [DOI: 10.1116/1.3495756]
C1 [Burckel, D. B.; Washburn, C. M.; Koleske, D. D.; Polsky, R.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Burckel, DB (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM dbburck@sandia.gov; rpolsky@sandia.gov
NR 8
TC 0
Z9 0
U1 1
U2 5
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD NOV
PY 2010
VL 28
IS 6
BP C6P14
EP C6P17
DI 10.1116/1.3495756
PG 4
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 690OX
UT WOS:000285015200106
ER
PT J
AU George, SA
Baclea-an, LM
Naulleau, PP
Chen, RJ
Liang, T
AF George, Simi A.
Baclea-an, Lorie Mae
Naulleau, Patrick P.
Chen, Robert J.
Liang, Ted
TI Extreme ultraviolet mask surface cleaning effects on lithography process
performance
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article
AB Extreme UV (EUV) masks are expected to undergo cleaning processes in order to maintain the lifetimes necessary for high volume manufacturing. For this study, the impact of repetitive cleaning of EUV masks on imaging performance is evaluated. Two high quality industry standard EUV masks are used, with one of the masks undergoing repeated cleaning and the other one kept as a reference. Lithographic performance, in terms of process window analysis and line edge roughness, was monitored after every two cleans and was compared to the reference mask performance. Surface analysis by atomic force microscopy did not show changes in the midspatial frequency roughness measured after each clean. After a total of eight cleans, minimal degradation is observed in the lithographic performance of the mask. From these observations, the authors conclude that the cleaning cycles completed thus far did not damage the mask multilayer or the absorber structures. The cleaning cycles will be continued until significant loss in imaging fidelity is found. (C) 2010 American Vacuum Society. [DOI: 10.1116/1.3501344]
C1 [George, Simi A.; Baclea-an, Lorie Mae; Naulleau, Patrick P.] Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Xray Opt, Berkeley, CA 94720 USA.
[Chen, Robert J.; Liang, Ted] Intel Corp, Santa Clara, CA 95052 USA.
RP George, SA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Xray Opt, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM sageorge@lbl.gov
NR 15
TC 2
Z9 2
U1 1
U2 1
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD NOV
PY 2010
VL 28
IS 6
BP C6E31
EP C6E35
DI 10.1116/1.3501344
PG 5
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 690OX
UT WOS:000285015200028
ER
PT J
AU George, SA
Naulleau, PP
Mochi, I
Salmassi, F
Gullikson, EM
Goldberg, KA
Anderson, EH
AF George, Simi A.
Naulleau, Patrick P.
Mochi, Iacopo
Salmassi, Farhad
Gullikson, Eric M.
Goldberg, Kenneth A.
Anderson, Erik H.
TI Extreme ultraviolet mask substrate surface roughness effects on
lithographic patterning
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article
ID LINE-EDGE ROUGHNESS; DEFECTS; SCATTERING; SYSTEM
AB In extreme ultraviolet lithography exposure systems, mask substrate roughness-induced scatter contributes to line edge roughness (LER) at the image plane. In this article, the impact of mask substrate roughness on image plane speckle is explicitly evaluated. A programed roughness mask was used to study the correlation between mask roughness metrics and wafer plane aerial image inspection. The authors find that the roughness measurements by the top surface topography profile do not provide complete information on the scatter related speckle that leads to LER at the image plane. They suggest at-wavelength characterization by imaging and/or scatter measurements into different frequencies as an alternative for a more comprehensive metrology of the mask substrate/multilayer roughness effects. (C) 2010 American Vacuum Society. [DOI:10.1116/1.3502436]
C1 [George, Simi A.; Naulleau, Patrick P.; Mochi, Iacopo; Salmassi, Farhad; Gullikson, Eric M.; Goldberg, Kenneth A.; Anderson, Erik H.] Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Xray Opt, Berkeley, CA 94720 USA.
RP George, SA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Xray Opt, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM sageorge@lbl.gov; pnaulleau@lbl.gov
NR 24
TC 5
Z9 5
U1 0
U2 0
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD NOV
PY 2010
VL 28
IS 6
BP C6E23
EP C6E30
DI 10.1116/1.3502436
PG 8
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 690OX
UT WOS:000285015200027
ER
PT J
AU Goldberg, KA
Mochi, I
AF Goldberg, K. A.
Mochi, I.
TI Wavelength-specific reflections: A decade of extreme ultraviolet actinic
mask inspection research
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article; Proceedings Paper
CT 54th International Conference on Electron, Ion and Photon Beam
Technology and Nanofabrication
CY JUN 01-04, 2010
CL Anchorage, AK
ID PHOTOEMISSION ELECTRON-MICROSCOPY; MULTILAYER DEFECTS; NATIVE DEFECTS;
BLANK DEFECTS; LITHOGRAPHY; LIGHT; LASER; NM; TOOLS
AB Mask inspection is essential for the success of any pattern transfer lithography technology, and extreme ultraviolet lithography (EUVL), in particular, faces unique challenges. EUV masks' resonant-reflective multilayer coatings have a narrow, wavelength-specific response that dramatically affects the way that defects appear, or disappear, at various illuminating wavelengths. Furthermore, the ever-shrinking size of "critical" defects limits the potential effectiveness of deep ultraviolet inspection techniques over time. Researchers pursuing numerous ways of finding and characterizing defects on extreme ultraviolet (EUV) masks and have met with varying degrees of success. Their lessons inform the current, urgent exploration to select the most effective techniques for high-volume manufacturing. Ranging from basic research and demonstration experiments to commercial inspection tool prototypes, the authors survey the recent history of work in this area, including sixteen projects in Europe, Asia, and America. Solutions range from scanning beams to microscopy, darkfield imaging to pattern transfer. (c) 2010 American Vacuum Society. [DOI: 10.1116/1.3498757]
C1 [Goldberg, K. A.; Mochi, I.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Goldberg, KA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Cyclotron Rd, Berkeley, CA 94720 USA.
EM KAGoldberg@lbl.gov
NR 68
TC 6
Z9 6
U1 0
U2 4
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD NOV
PY 2010
VL 28
IS 6
BP C6E1
EP C6E10
DI 10.1116/1.3498757
PG 10
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 690OX
UT WOS:000285015200024
ER
PT J
AU Makarova, O
Divan, R
Moldovan, N
Rosenmann, D
Tang, CM
AF Makarova, Olga
Divan, Ralu
Moldovan, Nicolaie
Rosenmann, Daniel
Tang, Cha-Mei
TI Nanoporous ultrananocrystalline diamond membranes
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article; Proceedings Paper
CT 54th International Conference on Electron, Ion and Photon Beam
Technology and Nanofabrication
CY JUN 01-04, 2010
CL Anchorage, AK
ID THIN-FILMS; HIGH-DENSITY; LITHOGRAPHY; FABRICATION
AB Micro- and nanoporous membranes have a wide range of applications in many fields, including medical diagnostics, drug delivery, and hemodialysis. Ultrananocrystalline diamond coatings are becoming more and more significant in medical applications because of the highest degree of biocompatibility, unmatched by other materials. The pores ranging in diameter from 100 to 2000 nm have been fabricated in a 1-mu m-thick ultrananocrystalline diamond film on silicon wafers using e-beam and optical lithography, reactive ion etching, and laser writing. (C) 2010 American Vacuum Society. [DOI: 10.1116/1.3501345]
C1 [Makarova, Olga; Tang, Cha-Mei] Creatv MicroTech Inc, Chicago, IL 60612 USA.
[Divan, Ralu; Rosenmann, Daniel] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Moldovan, Nicolaie] Adv Diamond Technol Inc, Romeoville, IL 60446 USA.
RP Makarova, O (reprint author), Creatv MicroTech Inc, 2242 W Harrison St, Chicago, IL 60612 USA.
EM olga@creatvmicrotech.com
NR 21
TC 2
Z9 2
U1 0
U2 5
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD NOV
PY 2010
VL 28
IS 6
BP C6P42
EP C6P47
DI 10.1116/1.3501345
PG 6
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 690OX
UT WOS:000285015200111
ER
PT J
AU Mochi, I
Goldberg, KA
Huh, S
AF Mochi, Iacopo
Goldberg, Kenneth A.
Huh, Sungmin
TI Actinic imaging and evaluation of phase structures on extreme
ultraviolet lithography masks
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article
ID ALGORITHMS; INSPECTION; RETRIEVAL
AB The authors describe the implementation of a phase-retrieval algorithm to reconstruct the phase and complex amplitude of structures on extreme ultraviolet (EUV) lithography masks. Many native defects commonly found on EUV reticles are difficult to detect and review accurately because they have a strong phase component. Understanding the complex amplitude of mask features is essential for predictive modeling of defect printability and defect repair. Besides printing in a stepper, the most accurate way to characterize such defects is with actinic inspection, performed at the design, EUV wavelength. Phase defect and phase structures show a distinct through-focus behavior that enables qualitative evaluation of the object phase from two or more high-resolution intensity measurements. For the first time, the phase of structures and defects on EUV masks were quantitatively reconstructed based on aerial image measurements, using a modified version of a phase-retrieval algorithm developed to test optical phase shifting reticles. (c) 2010 American Vacuum Society. [DOI: 10.1116/1.3498756]
C1 [Mochi, Iacopo; Goldberg, Kenneth A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Huh, Sungmin] Samsung Elect Co Ltd, Ban Wol, Hwasung 445701, Kyunggi, South Korea.
RP Mochi, I (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
EM imochi@lbl.gov
NR 12
TC 5
Z9 5
U1 0
U2 0
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD NOV
PY 2010
VL 28
IS 6
BP C6E11
EP C6E16
DI 10.1116/1.3498756
PG 6
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 690OX
UT WOS:000285015200025
ER
PT J
AU Palacios, E
Ocola, LE
Joshi-Imre, A
Bauerdick, S
Berse, M
Peto, L
AF Palacios, E.
Ocola, L. E.
Joshi-Imre, A.
Bauerdick, S.
Berse, M.
Peto, L.
TI Three-dimensional microfluidic mixers using ion beam lithography and
micromachining
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article
ID MICROMIXERS
AB In this article, the authors present microfluidic mixers containing three-dimensional (3D) geometries used to decrease mixing lengths in passive microfluidic systems. In order to create these 3D geometries, the authors use ion beam lithography and micromachining and address charging, redeposition, and stitching error effects that follow this type of fabrication. Prior to mixer fabrication, simulations were run and results were compared between a common straight mixer and two other mixers designed by the authors. The simulation results have shown that 3D geometries can generate lateral velocities and lower mixing lengths down to approximately 70 mu m. (C) 2010 American Vacuum Society. [DOI: 10.1116/1.3505128]
C1 [Palacios, E.] IIT, Dept Phys, BCPS, Chicago, IL 60616 USA.
[Palacios, E.] Univ Chicago, Dept Phys, Chicago, IL 60637 USA.
[Ocola, L. E.; Joshi-Imre, A.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Bauerdick, S.; Berse, M.; Peto, L.] Raith GmbH, D-44263 Dortmund, Germany.
RP Palacios, E (reprint author), IIT, Dept Phys, BCPS, Chicago, IL 60616 USA.
EM ocola@anl.gov
RI Joshi-Imre, Alexandra/A-2912-2010
OI Joshi-Imre, Alexandra/0000-0002-4271-1623
NR 11
TC 4
Z9 4
U1 3
U2 9
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD NOV
PY 2010
VL 28
IS 6
BP C6I1
EP C6I6
DI 10.1116/1.3505128
PG 6
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 690OX
UT WOS:000285015200045
ER
PT J
AU Shroff, YA
Leeson, M
Yan, PY
Gullikson, E
Salmassi, F
AF Shroff, Yashesh A.
Leeson, Michael
Yan, Pei-Yang
Gullikson, Eric
Salmassi, Farhad
TI High transmission pellicles for extreme ultraviolet lithography reticle
protection
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article
ID MASKS
AB The authors present the results of a full-field extreme ultraviolet (EUV) pellicle for reticle protection and defect mitigation. Based on novel microelectromechanical systems based fabrication, it comprises a 50 nm Si membrane attached to a wire-grid. Two types of pellicle fabrication techniques are described. The authors present the first actinic results of extreme ultraviolet lithography reticle with pellicle exposed on IMEC Advanced Demo Tool. The impact of different pellicle types on imaging is evaluated as a function of pellicle standoff distance and mesh geometry. A new prototype pellicle has been developed with a measured transmission of 82% in EUV. Actinic exposures are complemented with aerial image modeling, thermal analysis, vacuum cycling, resist outgas tests, and > 5 g repeated scan cycle robustness tests. (C) 2010 American Vacuum Society. [DOI: 10.1116/1.3505126]
C1 [Shroff, Yashesh A.; Leeson, Michael; Yan, Pei-Yang] Intel Corp, Santa Clara, CA 95054 USA.
[Gullikson, Eric; Salmassi, Farhad] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Shroff, YA (reprint author), Intel Corp, Santa Clara, CA 95054 USA.
EM yashesh.a.shroff@intel.com
NR 6
TC 13
Z9 13
U1 1
U2 5
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD NOV
PY 2010
VL 28
IS 6
BP C6E36
EP C6E41
DI 10.1116/1.3505126
PG 6
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 690OX
UT WOS:000285015200029
ER
PT J
AU Smolev, S
Ku, ZY
Brueck, SRJ
Brener, I
Sinclair, MB
Ten Eyck, GA
Langston, WL
Basilio, LI
AF Smolev, Svyatoslav
Ku, Zahyun
Brueck, S. R. J.
Brener, Igal
Sinclair, Michael B.
Ten Eyck, Gregory A.
Langston, W. L.
Basilio, Lorena I.
TI Resonant coupling to a dipole absorber inside a metamaterial:
Anticrossing of the negative index response
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article
AB The authors experimentally demonstrate a resonant hybridization between the magnetic dipole structural resonance in the permeability of a fishnet metamaterial and an electric dipole material resonance in the permittivity of the dielectric spacer layer. The hybrid resonances in the permeability and the negative index response exhibit an anticrossing behavior. A simple analytic model and numerical simulations using a rigorous coupled-wave analysis are in excellent qualitative agreement with the experiment. (C) 2010 American Vacuum Society. [DOI:10.1116/1.3503898]
C1 [Smolev, Svyatoslav; Ku, Zahyun; Brueck, S. R. J.] Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA.
[Brener, Igal; Sinclair, Michael B.; Ten Eyck, Gregory A.; Langston, W. L.; Basilio, Lorena I.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Smolev, S (reprint author), Univ New Mexico, Ctr High Technol Mat, 1313 Goddard, Albuquerque, NM 87106 USA.
EM smolev@chtm.unm.edu
RI Brener, Igal/G-1070-2010; Brueck, Steven/A-6383-2013;
OI Brener, Igal/0000-0002-2139-5182; Brueck, Steven/0000-0001-8754-5633
NR 11
TC 0
Z9 0
U1 1
U2 8
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD NOV
PY 2010
VL 28
IS 6
BP C6O16
EP C6O20
DI 10.1116/1.3503898
PG 5
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 690OX
UT WOS:000285015200093
ER
PT J
AU Srijanto, BR
Retterer, ST
Fowlkes, JD
Doktycz, MJ
AF Srijanto, Bernadeta R.
Retterer, Scott T.
Fowlkes, Jason D.
Doktycz, Mitchel J.
TI Nanostructured silicon membranes for control of molecular transport
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article
AB A membrane that allows selective transport of molecular species requires precise engineering on the nanoscale. Membrane permeability can be tuned by controlling the physical structure and surface chemistry of the pores. Here, a combination of electron beam and optical lithography, along with cryogenic deep reactive ion etching, has been used to fabricate silicon membranes that are physically robust, have uniform pore sizes, and are directly integrated into a microfluidic network. Additional reductions in pore size were achieved using plasma enhanced chemical vapor deposition and atomic layer deposition of silicon dioxide to coat membrane surfaces. Cross sectioning of the membranes using focused ion beam milling was used to determine the physical shape of the membrane pores before and after coating. Functional characterization of the membranes was performed by using quantitative fluorescence microscopy to document the transport of molecular species across the membrane. (C) 2010 American Vacuum Society. [DOI: 10.1116/1.3518911]
C1 [Srijanto, Bernadeta R.] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37831 USA.
Oak Ridge Natl Lab, Ctr Nanophase Mat Sci Div, Oak Ridge, TN 37831 USA.
RP Srijanto, BR (reprint author), Oak Ridge Natl Lab, Biosci Div, POB 2008, Oak Ridge, TN 37831 USA.
EM srijantobr@ornl.gov
RI Retterer, Scott/A-5256-2011; Srijanto, Bernadeta/D-4213-2016; Doktycz,
Mitchel/A-7499-2011
OI Retterer, Scott/0000-0001-8534-1979; Srijanto,
Bernadeta/0000-0002-1188-1267; Doktycz, Mitchel/0000-0003-4856-8343
FU NIBIB NIH HHS [R01 EB000657]
NR 20
TC 2
Z9 2
U1 0
U2 5
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD NOV
PY 2010
VL 28
IS 6
BP C6P48
EP C6P52
DI 10.1116/1.3518911
PG 5
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 690OX
UT WOS:000285015200112
PM 24932436
ER
PT J
AU Wendt, JR
Burckel, DB
Ten Eyck, GA
Ellis, AR
Brener, I
Sinclair, MB
AF Wendt, J. R.
Burckel, D. B.
Ten Eyck, G. A.
Ellis, A. R.
Brener, I.
Sinclair, M. B.
TI Fabrication techniques for three-dimensional metamaterials in the
midinfrared
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article
ID NEGATIVE REFRACTIVE-INDEX; PHOTONIC METAMATERIALS; RESONATORS;
LITHOGRAPHY; FREQUENCIES; RESONANCES
AB The authors have developed two versions of a flexible fabrication technique known as membrane projection lithography that can produce nearly arbitrary patterns in "21/2 D" and fully three-dimensional (3D) structures. The authors have applied this new technique to the fabrication of split ring resonator-based metamaterials in the midinfrared. The technique utilizes electron beam lithography for resolution, pattern design flexibility, and alignment. The resulting structures are nearly three orders of magnitude smaller than equivalent microwave structures that were first used to demonstrate a negative index material. The fully 3D structures are highly isotropic and exhibit both electrically and magnetically excited resonances for incident transverse electromagnetic waves. (C) 2010 American Vacuum Society. [DOI:10.1116/1.3504586]
C1 [Wendt, J. R.; Burckel, D. B.; Ten Eyck, G. A.; Ellis, A. R.; Brener, I.; Sinclair, M. B.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Wendt, JR (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM jrwendt@sandia.gov
RI Brener, Igal/G-1070-2010
OI Brener, Igal/0000-0002-2139-5182
NR 15
TC 0
Z9 0
U1 2
U2 6
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD NOV
PY 2010
VL 28
IS 6
BP C6O30
EP C6O33
DI 10.1116/1.3504586
PG 4
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 690OX
UT WOS:000285015200096
ER
PT J
AU Wojcik, MJ
Joshi, V
Sumant, AV
Divan, R
Ocola, LE
Lu, M
Mancini, DC
AF Wojcik, Michael J.
Joshi, Vishwanath
Sumant, Anirudha V.
Divan, Ralu
Ocola, Leonidas E.
Lu, Ming
Mancini, Derrick C.
TI Nanofabrication of x-ray zone plates using ultrananocrystalline diamond
molds and electroforming
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article; Proceedings Paper
CT 54th International Conference on Electron, Ion and Photon Beam
Technology and Nanofabrication
CY JUN 01-04, 2010
CL Anchorage, AK
ID E-BEAM LITHOGRAPHY; THIN-FILMS; NUCLEATION; DEVICES
AB X-ray zone plates are diffractive focusing optics composed of concentric rings of phase-shifting material with a changing period along their radii. Hard x-ray zone plates operate primarily in a range of photon energies from 3 to 30 keV. In order to achieve needed resolution and efficiency, high-aspect-ratio structures are typically patterned and fabricated by gold electroforming into a dielectric mold. Ideally, the molds would be mechanically stable and radiation resistant. Ultrananocrystalline diamond offers a solution with a set of physical properties that suggests that the material can be fabricated to desired requirements. The authors present here the first results for the fabrication of hard x-ray zone plates using an ultrananocrystalline diamond mold for electroforming gold and discuss future developments for creating an optimized focusing optic. (C) 2010 American Vacuum Society. [DOI: 10.1116/1.3501357]
C1 [Wojcik, Michael J.] IIT, Dept Biol Chem & Phys Sci, Chicago, IL 60616 USA.
[Joshi, Vishwanath; Sumant, Anirudha V.; Divan, Ralu; Ocola, Leonidas E.; Mancini, Derrick C.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Mancini, Derrick C.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Lu, Ming] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
RP Wojcik, MJ (reprint author), IIT, Dept Biol Chem & Phys Sci, Chicago, IL 60616 USA.
EM mancini@anl.gov
OI Ocola, Leonidas/0000-0003-4990-1064
NR 16
TC 1
Z9 1
U1 2
U2 7
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD NOV
PY 2010
VL 28
IS 6
BP C6P30
EP C6P35
DI 10.1116/1.3501357
PG 6
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 690OX
UT WOS:000285015200109
ER
PT J
AU Yang, EL
Liu, CC
Yang, CYP
Steinhaus, CA
Nealey, PF
Skinner, JL
AF Yang, E. L.
Liu, C. C.
Yang, C. Y. P.
Steinhaus, C. A.
Nealey, P. F.
Skinner, J. L.
TI Nanofabrication of surface-enhanced Raman scattering device by an
integrated block-copolymer and nanoimprint lithography method
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article; Proceedings Paper
CT 54th International Conference on Electron, Ion and Photon Beam
Technology and Nanofabrication
CY JUN 01-04, 2010
CL Anchorage, AK
AB The integration of block-copolymers (BCPs) and nanoimprint lithography (NIL) presents a novel and cost-effective approach to achieving nanoscale patterning capabilities. The authors demonstrate the fabrication of a surface-enhanced Raman scattering device using templates created by the BCP-NIL integrated method. The method utilizes a poly(styrene-block-methyl methacrylate) cylindrical-forming diblock-copolymer as a masking material to create a Si template, which is then used to perform a thermal imprint of a poly(methyl methacrylate) (PMMA) layer on a Si substrate. Au with a Cr adhesion layer was evaporated onto the patterned PMMA and the subsequent lift-off resulted in an array of nanodots. Raman spectra collected for samples of R6G on Si substrates with and without patterned nanodots showed enhancement of peak intensities due to the presence of the nanodot array. The demonstrated BCP-NIL fabrication method shows promise for cost-effective nanoscale fabrication of plasmonic and nanoelectronic devices. (C) 2010 American Vacuum Society. [DOI:10.1116/1.3501341]
C1 [Yang, E. L.; Yang, C. Y. P.; Steinhaus, C. A.; Skinner, J. L.] Sandia Natl Labs, Livermore, CA 94550 USA.
[Liu, C. C.; Nealey, P. F.] Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI 53706 USA.
RP Yang, EL (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA.
EM elai@sandia.gov
NR 26
TC 3
Z9 3
U1 0
U2 13
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD NOV
PY 2010
VL 28
IS 6
BP C6M93
EP C6M97
DI 10.1116/1.3501341
PG 5
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 690OX
UT WOS:000285015200085
ER
PT J
AU Rieken, JR
Anderson, IE
Kramer, MJ
AF Rieken, Joel R.
Anderson, Iver E.
Kramer, Matthew J.
TI MICROSTRUCTURE EVOLUTION OF GAS-ATOMIZED IRON-BASE ODS ALLOYS
SO INTERNATIONAL JOURNAL OF POWDER METALLURGY
LA English
DT Article
ID FERRITIC ALLOYS; STABILITY; STEELS; TI
AB In a simplified process to produce precursor powders for oxide dispersion-strengthened (ODS) alloys, gas-atomization reaction synthesis (GARS) was used to induce a surface oxide layer on molten droplets of three differing erritic stainless steel alloys during break-up and rapid solidification. The chemistry of the surface oxide was identified using auger electron spectroscopy (AES) and scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS). The precursor iron-base powders were consolidated at 850 C and 1,300 C using hot isostatic pressing (HIPing). Consolidation at the lower temperature resulted in a fully dense microstructure, while preventing substantial prior-particle-boundary-oxide dissociation. Microstructural analysis of the alloys consolidated at the higher temperature confirmed a significant reduction in prior-particle-boundary-oxide volume fraction, in comparison with the lower-temperature-consolidated sample. This provided evidence that a high-temperature internal oxygen-exchange reaction occurred between the metastable prior-particle-boundary-oxide phase (chromium oxide) and the yttrium contained within each prior particle. This internal oxygen-exchange reaction is shown to result in the formation of yttrium-enriched oxide dispersoids throughout the alloy microstructure. The evolving microstructure was characterized using transmission electron microscopy (TEM) and high-energy X-ray diffraction (HE-XRD).
C1 [Rieken, Joel R.] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA.
[Anderson, Iver E.; Kramer, Matthew J.] US DOE, Div Mat Sci & Engn, Ames Lab, Ames, IA 50011 USA.
RP Rieken, JR (reprint author), Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA.
EM jrieken@iastate.edu
FU Department of Energy, Office of Fossil Energy through the Ames
Laboratory [DE-AC02-07CH11358]; Department of Energy, Office of Science,
Basic Energy Sciences [DE-AC02-06CH11357]
FX Support from the Department of Energy, Office of Fossil Energy (ARM
program) through the Ames Laboratory (contract no. DE-AC02-07CH11358) is
gratefully acknowledged. The high-energy X-ray work at beamline 11-BM of
the APS was supported by the Department of Energy, Office of Science,
Basic Energy Sciences (contract no. DE-AC02-06CH11357). The authors also
thank Danny Shechtman, James Anderegg, David Byrd, and Hal Sailsbury for
their individual contributions to this paper.
NR 33
TC 8
Z9 8
U1 1
U2 12
PU AMER POWDER METALLURGY INST
PI PRINCETON
PA 105 COLLEGE ROAD EAST, PRINCETON, NJ 08540 USA
SN 0888-7462
J9 INT J POWDER METALL
JI Int. J. Powder Metall.
PD NOV-DEC
PY 2010
VL 46
IS 6
BP 17
EP 31
PG 15
WC Metallurgy & Metallurgical Engineering
SC Metallurgy & Metallurgical Engineering
GA 696GO
UT WOS:000285430100006
ER
PT J
AU Kaita, R
Berzak, L
Boyle, D
Gray, T
Granstedt, E
Hammett, G
Jacobson, CM
Jones, A
Kozub, T
Kugel, H
Leblanc, B
Logan, N
Lucia, M
Lundberg, D
Majeski, R
Mansfield, D
Menard, J
Spaleta, J
Strickler, T
Timberlake, J
Yoo, J
Zakharov, L
Maingi, R
Soukhanovskii, V
Tritz, K
Gershman, S
AF Kaita, Robert
Berzak, Laura
Boyle, Dennis
Gray, Timothy
Granstedt, Erik
Hammett, Gregory
Jacobson, Craig M.
Jones, Andrew
Kozub, Thomas
Kugel, Henry
Leblanc, Benoit
Logan, Nicholas
Lucia, Matthew
Lundberg, Daniel
Majeski, Richard
Mansfield, Dennis
Menard, Jonathan
Spaleta, Jeffrey
Strickler, Trevor
Timberlake, John
Yoo, Jongsoo
Zakharov, L.
Maingi, Rajesh
Soukhanovskii, Vlad
Tritz, Kevin
Gershman, Sophia
TI Experiments with liquid metal walls: Status of the lithium tokamak
experiment
SO FUSION ENGINEERING AND DESIGN
LA English
DT Article
DE Low-aspect ratio tokamaks; Lithium plasma-facing components;
Low-recycling plasmas; Fusion reactor first walls; Plasma fueling
AB Liquid metal walls have been proposed to address the first wall challenge for fusion reactors. The lithium tokamak experiment (LTX) at the Princeton Plasma Physics Laboratory (PPPL) is the first magnetic confinement device to have liquid metal plasma-facing components (PFC's) that encloses virtually the entire plasma. In the current drive experiment-upgrade (CDX-U), a predecessor to LTX at PPPL, the highest improvement in energy confinement ever observed in ohmically heated tokamak plasmas was achieved with a toroidal liquid lithium limiter. The LTX extends this liquid lithium PFC by using a conducting conformal shell that almost completely surrounds the plasma. By heating the shell, a lithium coating on the plasma-facing side can be kept liquefied. A consequence of the low-recycling conditions from liquid lithium walls is the need for efficient plasma fueling. For this purpose, a molecular cluster injector is being developed. Future plans include the installation of a neutral beam for core plasma fueling, and also ion temperature measurements using charge-exchange recombination spectroscopy (CHERS). Low edge recycling is also predicted to reduce temperature gradients that drive drift wave turbulence. Gyrokinetic simulations are in progress to calculate fluctuation levels and transport for LTX plasmas, and new fluctuation diagnostics are under development to test these predictions. (C) 2010 Elsevier B.V. All rights reserved.
C1 [Kaita, Robert; Berzak, Laura; Boyle, Dennis; Gray, Timothy; Granstedt, Erik; Hammett, Gregory; Jacobson, Craig M.; Jones, Andrew; Kozub, Thomas; Kugel, Henry; Leblanc, Benoit; Logan, Nicholas; Lucia, Matthew; Lundberg, Daniel; Majeski, Richard; Mansfield, Dennis; Menard, Jonathan; Spaleta, Jeffrey; Strickler, Trevor; Timberlake, John; Yoo, Jongsoo; Zakharov, L.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
[Maingi, Rajesh] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Soukhanovskii, Vlad] Lawrence Livermore Natl Lab, Livermore, CA USA.
[Tritz, Kevin] Johns Hopkins Univ, Baltimore, MD USA.
[Gershman, Sophia] Watchung Hills Reg High Sch, Warren, NJ USA.
RP Kaita, R (reprint author), Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
EM kaita@pppl.gov
RI Hammett, Gregory/D-1365-2011; Boyle, Dennis/B-8676-2011;
OI Hammett, Gregory/0000-0003-1495-6647; Boyle, Dennis/0000-0001-8091-8169;
Jacobson, Craig/0000-0001-7852-6932; Yoo, Jongsoo/0000-0003-3881-1995;
Menard, Jonathan/0000-0003-1292-3286
FU US Department of Energy [DE-AC02-09CH11466, DE-AC04-94AL85000,
DE-AC52-07NA27344, DE-AC05-00OR22725]
FX Work supported by US Department of Energy Contracts DE-AC02-09CH11466,
DE-AC04-94AL85000, DE-AC52-07NA27344, and DE-AC05-00OR22725.
NR 16
TC 12
Z9 13
U1 1
U2 20
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0920-3796
J9 FUSION ENG DES
JI Fusion Eng. Des.
PD NOV
PY 2010
VL 85
IS 6
BP 874
EP 881
DI 10.1016/j.fusengdes.2010.04.005
PG 8
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 704UJ
UT WOS:000286080800008
ER
PT J
AU Binley, A
Kruschwitz, S
Lesmes, D
Kettridge, N
AF Binley, Andrew
Kruschwitz, Sabine
Lesmes, David
Kettridge, Nicholas
TI Exploiting the temperature effects on low frequency electrical spectra
of sandstone: A comparison of effective diffusion path lengths
SO GEOPHYSICS
LA English
DT Article
ID INDUCED POLARIZATION; POROUS-MEDIA; CONDUCTIVITY; TIME
AB A number of recent investigations have highlighted the potential value of using relaxation times derived from electrical spectra to infer key physical properties of permeable rocks. To date, most studies have assumed a grain size or pore throat as a measure of the length scale of the ionic diffusive process, although this has been challenged in recent experimental investigations. We compare the electrical spectra of three sandstones, adopting a new approach in which the temperature of the rock samples is perturbed and the relaxation time measured as a function of temperature. Our results suggest that, for the sandstones tested here, the effective diffusion coefficient should be considered as a function of the electrical tortuosity. These findings may help explain the apparent long relaxation times observed in low-permeability rocks in recent experimental studies. We also highlight the need to account for temperature in related studies of electrical spectra.
C1 [Binley, Andrew; Kettridge, Nicholas] Univ Lancaster, Lancaster Environm Ctr, Lancaster, England.
[Kruschwitz, Sabine] Fed Inst Mat Res & Testing, Berlin, Germany.
[Lesmes, David] US DOE, Washington, DC USA.
RP Binley, A (reprint author), Univ Lancaster, Lancaster Environm Ctr, Lancaster, England.
EM a.binley@lancaster.ac.uk; s.kruschwitz@gmx.de;
david.lesmes@science.doe.gov; n.kettridge@lancaster.ac.uk
RI Kettridge, Nicholas/G-5686-2015; Binley, Andrew/C-2487-2013
OI Kettridge, Nicholas/0000-0003-3995-0305; Binley,
Andrew/0000-0002-0938-9070
NR 15
TC 15
Z9 15
U1 0
U2 5
PU SOC EXPLORATION GEOPHYSICISTS
PI TULSA
PA 8801 S YALE ST, TULSA, OK 74137 USA
SN 0016-8033
J9 GEOPHYSICS
JI Geophysics
PD NOV-DEC
PY 2010
VL 75
IS 6
BP A43
EP A46
DI 10.1190/1.3483815
PG 4
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 700TT
UT WOS:000285767900001
ER
PT J
AU Doll, WE
Gamey, TJ
Holladay, JS
Sheehan, JR
Norton, J
Beard, LP
Lee, JLC
Hanson, AE
Lahti, RM
AF Doll, William E.
Gamey, T. Jeffrey
Holladay, J. Scott
Sheehan, Jacob R.
Norton, Jeannemarie
Beard, Les P.
Lee, James L. C.
Hanson, Andri E.
Lahti, Raye M.
TI Results of a high-resolution airborne TEM system demonstration for
unexploded ordnance detection
SO GEOPHYSICS
LA English
DT Article
AB Airborne geophysical sensor systems using boom-mounted configurations now play an important role in characterizing ordnance-contaminated defense sites. Most of the systems developed to date have been magnetometer systems. These have proven ineffective at sites where basalt or other magnetic geologic units or soils have caused unacceptable noise in the data. Electromagnetic (EM) systems have been developed as an alternative to magnetometer systems for such sites. Recent evaluation of New Mexico field results from the new TEM-8 time-domain EM system has shown successful detection of emplaced blind-seeded ordnance items. Overall, 109 of 110 items were detected, some as small as 81-mm mortars at an area with moderately magnetic geology. The TEM-8 system was also effective in mapping ordnance at a bombing target with severe geologic interference due to basalt, where a previous airborne magnetometer survey proved ineffective. Data and performance metrics for both survey areas are presented and evaluated.
C1 [Doll, William E.; Gamey, T. Jeffrey; Sheehan, Jacob R.; Norton, Jeannemarie; Beard, Les P.] Battelle Oak Ridge Operat, Oak Ridge, TN USA.
[Hanson, Andri E.; Lahti, Raye M.] AMEC Earth & Environm, Minneapolis, MN USA.
RP Doll, WE (reprint author), Battelle Oak Ridge Operat, Oak Ridge, TN USA.
EM dollw@battelle.org; gameytj@battelle.org; scott.holladay@geosensors.com;
jacob.sheehan@zonge.us; nortonj@battelle.org; lpbeard@comcast.net;
jlc.lee@sympatico.ca; andri.hanson@amec.com; raye.lahti@amec.com
NR 12
TC 4
Z9 4
U1 1
U2 2
PU SOC EXPLORATION GEOPHYSICISTS
PI TULSA
PA 8801 S YALE ST, TULSA, OK 74137 USA
SN 0016-8033
J9 GEOPHYSICS
JI Geophysics
PD NOV-DEC
PY 2010
VL 75
IS 6
BP B211
EP B220
DI 10.1190/1.3505817
PG 10
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 700TT
UT WOS:000285767900005
ER
PT J
AU Boozer, AH
Pomphrey, N
AF Boozer, Allen H.
Pomphrey, Neil
TI Current density and plasma displacement near perturbed rational surfaces
SO PHYSICS OF PLASMAS
LA English
DT Article
AB The current density in the vicinity of a rational surface of a force-free magnetic field subjected to an ideal perturbation is shown to be the sum of both a smooth and a delta-function distribution, which give comparable currents The maximum perturbation to the smooth current density is comparable to a typical equilibrium current density and the width of the layer in which the current flows is shown to be proportional to the perturbation amplitude In the standard linearized theory, the plasma displacement has an unphysical jump across the rational surface, but the full theory gives a continuous displacement A resolution of the paradox of a jump in the displacement is required for interpreting perturbed tokamak equilibria (C) 2010 American Institute of Physics [doi 10 1063/1 3507307]
C1 [Boozer, Allen H.] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA.
[Pomphrey, Neil] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Boozer, AH (reprint author), Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA.
FU U S Department of Energy [DE-FG02-03ER54696]
FX The authors would like to thank Francois Waelbroeck for pointing out an
oversight in the singular current in an earlier version of this
manuscript and Allan Reiman and Donald Monticello for useful discussions
The work was supported in part by the U S Department of Energy through
Grant No DE-FG02-03ER54696 to Columbia University
NR 9
TC 10
Z9 10
U1 0
U2 8
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD NOV
PY 2010
VL 17
IS 11
AR 110707
DI 10.1063/1.3507307
PG 4
WC Physics, Fluids & Plasmas
SC Physics
GA 697BB
UT WOS:000285486500007
ER
PT J
AU Edens, AD
Adams, RG
Rambo, P
Ruggles, L
Smith, IC
Porter, JL
Ditmire, T
AF Edens, A. D.
Adams, R. G.
Rambo, P.
Ruggles, L.
Smith, I. C.
Porter, J. L.
Ditmire, T.
TI Study of high Mach number laser driven blast waves in gases
SO PHYSICS OF PLASMAS
LA English
DT Article
ID RADIATIVE SHOCK; INSTABILITIES; HYDRODYNAMICS; ASTROPHYSICS; GROWTH;
MODELS; PLASMA
AB A senes of experiments were performed examining the evolution of blast waves produced by laser irradiation of a target immersed in gas Blast waves were produced by illumination of wires by 1 kJ, 1 ns laser pulses from the Z-Beamlet laser at Sandia National Laboratories The blast waves were imaged by probe laser pulses at various times to examine the trajectory, radiative precursor, and induced perturbations on the blast wave front Well defined perturbations were induced on the blast wave front with arrays of wires placed in the gas and the results of the experiments are compared to the theoretical predictions for the Vishniac overstabtlity It is found that the experimental results are in general agreement with these theoretical predictions on thin blast wave shells and are in quantitative agreement in the simplest case (C) 2010 American Institute of Physics [doi 101063/1 3491411]
C1 [Edens, A. D.; Adams, R. G.; Rambo, P.; Ruggles, L.; Smith, I. C.; Porter, J. L.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Ditmire, T.] Univ Texas Austin, Dept Phys, Texas Ctr High Intens Laser Sci, Austin, TX 78712 USA.
RP Edens, AD (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
FU Sandia National Laboratory; National Nuclear Security Administration
[DE-FC52-03NA00156]
FX We would like to acknowledge useful conversations with Paul Drake and
Bruce Remington This work was supported by a grant from Sandia National
Laboratory and by the National Nuclear Security Administration under
Cooperative Agreement No DE-FC52-03NA00156
NR 33
TC 7
Z9 7
U1 0
U2 2
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD NOV
PY 2010
VL 17
IS 11
AR 112104
DI 10.1063/1.3491411
PG 14
WC Physics, Fluids & Plasmas
SC Physics
GA 697BB
UT WOS:000285486500012
ER
PT J
AU Foster, JM
Rosen, PA
Wilde, BH
Hartigan, P
Perry, TS
AF Foster, J. M.
Rosen, P. A.
Wilde, B. H.
Hartigan, P.
Perry, T. S.
TI Mach reflection in a warm dense plasma
SO PHYSICS OF PLASMAS
LA English
DT Article
ID SHOCK-WAVE REFLECTIONS; SUPERSONIC JETS; SIMULATION; GAS; INSTABILITY;
BOUNDARIES; DYNAMICS; TARGETS; DOMAINS
AB The phenomenon of irregular shock-wave reflection is of importance in high-temperature gas dynamics, astrophysics, inertial-confinement fusion, and related fields of high-energy-density science However, most experimental studies of irregular reflection have used supersonic wind tunnels or shock tubes, and few or no data are available for Mach reflection phenomena in the plasma regime Similarly, analytic studies have often been confined to calorically perfect gases We report the first direct observation, and numerical modeling, of Mach stem formation for a warm, dense plasma Two ablatively driven aluminum disks launch oppositely directed, near-spherical shock waves into a cylindrical plastic block The interaction of these shocks results in the formation of a Mach-ring shock that is diagnosed by x-ray backlighting The data are modeled using radiation hydrocodes developed by AWE and LANL The experiments were carried out at the University of Rochester's Omega laser [J M Soures, R L McCrory, C P Verdon et al, Phys Plasmas 3, 2108 (1996)] and were inspired by modeling [A M Khokhlov, P A Hoflich, E S Oran et al, Astrophys J 524, L107 (1999)] of core-collapse supernovae that suggest that in asymmetric supernova explosion significant mass may be ejected in a Mach-ring formation launched by bipolar jets [doi:10.1063/1.3499690]
C1 [Foster, J. M.; Rosen, P. A.] Atom Weap Estab, Reading RG7 4PR, Berks, England.
[Wilde, B. H.] Los Alamos Natl Lab, Los Alamos, NM 87544 USA.
[Hartigan, P.] Rice Univ, Dept Phys & Astron, Houston, TX 77521 USA.
[Perry, T. S.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Foster, JM (reprint author), Atom Weap Estab, Reading RG7 4PR, Berks, England.
RI Perry, Theodore/K-3333-2014
OI Perry, Theodore/0000-0002-8832-2033
FU United States Department of Energy [DE-AC52-06NA25396]
FX It is a pleasure to acknowledge the guidance provided by Paul Drake and
Alexei Khokhlov in the design and interpretation of this experiment The
authors also gratefully acknowledge the technical expertise and
assistance of Vern Rikow and Sharon Alvarez, the staff and operations
team of the Omega laser facility, and the LLNL and AWE
target-fabrication groups This work was supported by the Los Alamos
National Laboratory under the auspices of the United States Department
of Energy under Contract No DE-AC52-06NA25396
NR 42
TC 6
Z9 7
U1 0
U2 6
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD NOV
PY 2010
VL 17
IS 11
AR 112704
DI 10.1063/1.3499690
PG 9
WC Physics, Fluids & Plasmas
SC Physics
GA 697BB
UT WOS:000285486500065
ER
PT J
AU Griswold, ME
Fisch, NJ
Wurtele, JS
AF Griswold, M. E.
Fisch, N. J.
Wurtele, J. S.
TI An upper bound to time-averaged space-charge limited diode currents
SO PHYSICS OF PLASMAS
LA English
DT Article
ID ONE-DIMENSIONAL DIODE; CHILD-LANGMUIR LAW; VACUUM; FLOW
AB The Child-Langmuir law limits the steady-state current density across a one-dimensional planar diode While it is known that the peak current density can surpass this limit when the boundary conditions vary in time, it remains an open question of whether the average current can violate the Child-Langmuir limit under time-dependent conditions For the case where the applied voltage is constant but the electric field at the cathode is allowed to vary in time, one-dimensional particle-in-cell simulations suggest that such a violation is impossible Although a formal proof is not given, an upper bound on the time-averaged current density is offered (C) 2010 American Institute of Physics [doi 10 1063/1 3503661]
C1 [Griswold, M. E.; Fisch, N. J.] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
[Wurtele, J. S.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RP Griswold, ME (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
RI wurtele, Jonathan/J-6278-2016
OI wurtele, Jonathan/0000-0001-8401-0297
FU Oak Ridge Institute for Science and Education; U S Department of Energy;
Oak Ridge Associated Universities; U S DOE [DE-AC02-76-CH03073,
DE-FG02-04ER41289]
FX The research was performed under appointment to the Fusion Energy
Sciences Fellowship Program administered by Oak Ridge Institute for
Science and Education under a contract between the U S Department of
Energy and the Oak Ridge Associated Universities This work was also
supported by the U S DOE under Contract Nos DE-AC02-76-CH03073 and
DE-FG02-04ER41289
NR 13
TC 18
Z9 18
U1 0
U2 4
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD NOV
PY 2010
VL 17
IS 11
AR 114503
DI 10.1063/1.3503661
PG 2
WC Physics, Fluids & Plasmas
SC Physics
GA 697BB
UT WOS:000285486500121
ER
PT J
AU Hudson, SR
AF Hudson, S. R.
TI A regularized approach for solving magnetic differential equations and a
revised iterative equilibrium algorithm
SO PHYSICS OF PLASMAS
LA English
DT Article
ID DESTRUCTION; TRANSPORT; SURFACES; ISLANDS
AB A method for approximately solving magnetic differential equations is described The approach is to include a small diffusion term to the equation, which regularizes the linear operator to be inverted The extra term allows a "source-correction" term to be defined, which is generally required in order to satisfy the solvability conditions The approach is described in the context of computing the pressure and parallel currents in the iterative approach for computing magnetohydrodynamic equilibria (C) 2010 American Institute of Physics [doi 10 1063/1 3506821]
C1 Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Hudson, SR (reprint author), Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
RI Hudson, Stuart/H-7186-2013
OI Hudson, Stuart/0000-0003-1530-2733
NR 20
TC 2
Z9 2
U1 0
U2 4
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD NOV
PY 2010
VL 17
IS 11
AR 114501
DI 10.1063/1.3506821
PG 4
WC Physics, Fluids & Plasmas
SC Physics
GA 697BB
UT WOS:000285486500119
ER
PT J
AU Krasheninnikova, NS
AF Krasheninnikova, Natalia S.
TI Analysis of particle penetration length into the wall crevices
SO PHYSICS OF PLASMAS
LA English
DT Article
ID TILTED MAGNETIC-FIELD; PLASMA CONVECTION; DIVERTOR PLATE; TILE GAPS;
SHEATH; SURFACE; DRIFTS
AB The present work investigates the effects of the surface roughness on the plasma-wall interactions via kinetic simulations of an initial value problem using the particle-in-cell code VPIC [K J Bowers et al, Phys Plasmas 15, 055703 (2008)] Collision less plasma immersed in parallel to the wall magnetic field is self-consistently interacting with a nonflat surface, whose roughness is varied relative to the thermal ion gyroradius The analysis of the numerical results and analytical estimates yields a scaling of the penetration length that can be described by an analytical formula (C) 2010 American Institute of Physics [doi 10 1063/1 3505306]
C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Krasheninnikova, NS (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
FU U S DOE/NNSA [DE-AC52-06NA25396]
FX This research was supported by U S DOE/NNSA, performed at LANL, operated
by LANS LLC under Contract No DE-AC52-06NA25396 The author is indebted
to Mark Schmitt of LANL for the support The author is extremely grateful
to Kevin Bowers, Brian Albright, and the rest of the VPIC team for
making their code available for this work The author also would like to
express her gratitude to the Institutional Computing team at LANL
Special thanks go to Vadim S Roytershteyn of LANL for the useful
discussions and help with using VPIC The author is also thankful to
Xianzhu Tang of LANL for the valuable input
NR 20
TC 0
Z9 0
U1 1
U2 6
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD NOV
PY 2010
VL 17
IS 11
AR 114504
DI 10.1063/1.3505306
PG 4
WC Physics, Fluids & Plasmas
SC Physics
GA 697BB
UT WOS:000285486500122
ER
PT J
AU Pino, J
Li, H
Mahajan, S
AF Pino, Jesse
Li, Hui
Mahajan, Swadesh
TI Relaxed states in relativistic multifluid plasmas
SO PHYSICS OF PLASMAS
LA English
DT Article
ID WINDS
AB The evolution equations for a plasma comprising multiple species of charged fluids with relativistic bulk and thermal motion are derived It is shown that a minimal fluid coupling model allows a natural casting of the evolution equations in terms of generalized vorticity, which treats the fluid motion and electromagnetic fields equally Equilibria can be found using a variational principle based on minimizing the total enstrophy subject to energy and helicity constraints A subset of these equilibria corresponds to minimum energy The equations for these states are presented with example solutions showing the structure of the relaxed states (C) 2010 American Institute of Physics [doi 10 1063/1 3505326]
C1 [Pino, Jesse; Li, Hui] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Mahajan, Swadesh] Univ Texas Austin, Inst Fus Studies, Austin, TX 78712 USA.
RP Pino, J (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
RI Pino, Jesse/C-9183-2014
NR 23
TC 12
Z9 12
U1 0
U2 2
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD NOV
PY 2010
VL 17
IS 11
AR 112112
DI 10.1063/1.3505326
PG 7
WC Physics, Fluids & Plasmas
SC Physics
GA 697BB
UT WOS:000285486500020
ER
PT J
AU Poli, FM
Ethier, S
Wang, W
Hahm, TS
Mazzucato, E
Smith, DR
AF Poli, F. M.
Ethier, S.
Wang, W.
Hahm, T. S.
Mazzucato, E.
Smith, D. R.
TI A synthetic diagnostic for validation of electron gyroradius scale
turbulence simulations against coherent scattering measurements
SO PHYSICS OF PLASMAS
LA English
DT Article
ID BEAM EMISSION-SPECTROSCOPY; DIII-D; EDGE TURBULENCE; PLASMAS; TOKAMAK;
MODES; FLUCTUATIONS; PROPAGATION; SYSTEM; WAVES
AB Comparison between spectra of short-scale density fluctuations measured with coherent electromagnetic scattering experiments and those extracted from space-resolved numerical simulations is affected by a number of systematic errors These include the locality of scattering measurements, the different domain covered (space-resolved simulations versus wavenumber resolved measurements), and the stationanty of simulated nonlinear spectra To bridge the gap between theory-simulations and experiments, a synthetic diagnostic for high-k scattering measurements has been developed This synthetic scattering predicts the propagation of the beam in an anisotropic, inhomogeneous plasma and accounts for the spatial variation of the instrumental transfer function The latter, in particular, is proven to provide an important calibration factor not only for the simulated spectra, but also for the measured ones, allowing the use of the synthetic diagnostic in predictive mode Results from a case study for National Spherical Torus Experiment plasmas using high-k tangential scattering system [Smith et al, Rev Sci Instrum 75, 3840 (2004)] and the gyrokinetic tokamak simulation code [Wang et at, Phys Plasmas 13, 092505 (2006)] are presented (C) 2010 American Institute of Physics [doi:10.1063/1.3492715]
C1 [Poli, F. M.] Univ Warwick, Coventry CV4 7AL, W Midlands, England.
[Ethier, S.; Wang, W.; Hahm, T. S.; Mazzucato, E.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
[Smith, D. R.] Univ Wisconsin, Dept Engn Phys, Madison, WI USA.
RP Poli, FM (reprint author), Univ Warwick, Gibbet Hill Rd, Coventry CV4 7AL, W Midlands, England.
RI poli, francesca/C-2226-2008
OI poli, francesca/0000-0003-3959-4371
FU U S DOE [DE-AC02-09-CH11466]; SciDAC GPS-TTBP project; Office of Science
of the U S Department of Energy [DE-AC05-00OR22725]; UK EPSRC
FX S Nowak is acknowledged for help on the computation of the complex
eikonal H Park and Y Ren are acknowledged for fruitful discussion on the
high-k scattering diagnostic This work is supported by U S DOE under
Contract No DE-AC02-09-CH11466 and by the SciDAC GPS-TTBP project This
research used resources of the Oak Ridge Leadership Facility at the Oak
Ridge National Laboratory, which is supported by the Office of Science
of the U S Department of Energy under Contract No DE-AC05-00OR22725 The
computer time was granted as part of the DOE Innovative and Novel
Computational Impact on Theory and Experiment (INCITE) program F M Poli
is supported by the UK EPSRC
NR 40
TC 2
Z9 2
U1 0
U2 4
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD NOV
PY 2010
VL 17
IS 11
AR 112514
DI 10.1063/1.3492715
PG 12
WC Physics, Fluids & Plasmas
SC Physics
GA 697BB
UT WOS:000285486500061
ER
PT J
AU Porter, GD
Petrie, TW
Rognlien, TD
Rensink, ME
AF Porter, G. D.
Petrie, T. W.
Rognlien, T. D.
Rensink, M. E.
TI UEDGE simulation of edge plasmas in DIII-D double null configurations
SO PHYSICS OF PLASMAS
LA English
DT Article
ID DIVERTOR MAGNETIC BALANCE; SCRAPE-OFF LAYER; REDUCTION; TRANSPORT;
TOKAMAKS; CODE
AB Analysis of plasma flow in the edge of double null hybrid mode DIII-D plasmas is reported The two dimension fluid plasma code UEDGE [T Rognlien et al, J Nucl Mater 196-198,347 (1992)] is used for the analysis The effect of impurity radiation from intrinsic carbon sputtered from plasma facing surfaces is included as is the effect of plasma drifts Two discharges in which the flux surfaces through the poloidal field nulls (X-points) are separated by 1 cm at the outer midplane are analyzed The discharges differ only in the direction of the ion del B drift It is shown that the flow of both primary ions and intrinsic impurities is dominated by the effect of plasma drifts Variations in the recycling of deuterium ions, as seen in D(alpha) emission profiles, are qualitatively consistent with experiment and are driven by the effect of E X B drifts associated with radial gradients of the electron temperature at the secondary separatrix Trace argon impurity is introduced to simulate the transport of argon used in the experiment to enhance divertor radiation power Penetration of the trace argon to the closed field lines depends on the direction of the ion del B drift, consistent with experiment The analysis described here includes the effect of a deuterium gas puff to establish the "puff and pump" configuration The poloidal flow of impurities is a balance between the projection of the parallel flow and poloidal drifts, primarily from E X B It is shown that the effect of the gas puff is primarily to alter the electron temperature profile and thus affects impurity flow via alteration of E X B drifts, not via entrainment in deuterium ion parallel flow (C) 2010 American Institute of Physics [doi 10 1063/1 3499666]
C1 [Porter, G. D.; Rognlien, T. D.; Rensink, M. E.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Petrie, T. W.] Gen Atom Co, San Diego, CA 92186 USA.
RP Porter, GD (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
NR 21
TC 4
Z9 4
U1 1
U2 3
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD NOV
PY 2010
VL 17
IS 11
AR 112501
DI 10.1063/1.3499666
PG 15
WC Physics, Fluids & Plasmas
SC Physics
GA 697BB
UT WOS:000285486500048
ER
PT J
AU Kelley, R
AF Kelley, Robert
TI Burma nuclear program highlights the need for a standing UN technical
body
SO BULLETIN OF THE ATOMIC SCIENTISTS
LA English
DT Article
DE Burma; IAEA; OPCW; structure; technical body; UN; weapons of mass
destruction; WMD
AB The author highlights Burma and recent events surrounding its nuclear program to present a case for the development of a UN technical body to investigate countries suspected of having weapons of mass destruction (WMD). International verification organizations such as the International Atomic Energy Agency (IAEA) and the Organization for the Prevention of Chemical Weapons (OPCW) have no expertise in evaluating technologies outside their core missions, which, he writes, means no international organization can assess the technology of missile delivery systems. Using Burma as a backdrop, the author makes the case for an international technical body, which he outlines in structure, function, and scope.
C1 [Kelley, Robert] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
NR 10
TC 0
Z9 0
U1 0
U2 2
PU SAGE PUBLICATIONS INC
PI THOUSAND OAKS
PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 USA
SN 0096-3402
J9 B ATOM SCI
JI Bull. Atom. Scient.
PD NOV-DEC
PY 2010
VL 66
IS 6
BP 67
EP 76
DI 10.1177/0096340210387045
PG 10
WC International Relations; Social Issues
SC International Relations; Social Issues
GA 697VZ
UT WOS:000285549200007
ER
EF