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Journal of Nuclear Materials,
438:S846-S851
2013
Equipe: Département CP2S : Expériences et Simulations des Plasmas Réactifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS |
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NATURE PHYSICS,
9(1):49-54
2013
ISSN: 1745-2473
DOI: 10.1038/NPHYS2487
Equipe: Département P2M : Surfaces et Spectroscopies |
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Bias dependence of tunneling magnetoresistance in magnetic tunnel junctions with asymmetric barriers
Journal of Physics Condensed Matter,
25(49)
2013
Equipe: Département P2M : Nanomagnétisme et Electronique de Spin |
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PHYSICAL REVIEW B,
88(12)
2013
ISSN: 1098-0121
Equipe: Département P2M : Surfaces et Spectroscopies |
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Journal of the Acoustical Society fo America,
134:991
2013
Resume: The determination of the initial pressure at the bubble wall created by a discharge in heptane for micro-gap conditions cannot be determined straightforwardly by modeling the time-oscillations of the bubble. The resolution of the Gilmore equation gives the same solutions beyond 1 mu s typically for various sets of initial parameters, making impossible the determination of the initial pressure at the bubble wall. Furthermore, the very first instant of the bubble formation is not easily accessible at very short time scales because of the plasma emission. Since the pressure waves propagate in the liquid, it is much easier to gain information on the first instants of the bubble formation by studying the pressure field far from the emission source. Then, it is possible to deduce by modeling what happened at the beginning of the emission of the pressure waves. The proposed solution consists in looking at the oscillations affecting another bubble located at least twice farther from the interelectrode gap than the maximum radius reached by the discharge bubble. The initial plasma pressure can be determined by this method. (C) 2013 Acoustical Society of America. Equipe: Département CP2S : Expériences et Simulations des Plasmas Réactifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS |
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JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA,
134(2, 1):991-1000
Belmonte, T (Reprint Author), Univ Lorraine, Inst Jean Lamour, UMR CNRS 7198, Parc Saurupt,CS 14234, F-54042 Nancy, France. Hamdan, A.; Noel, C.; Kosior, F.; Henrion, G.; Belmonte, T., Univ Lorraine, Inst Jean Lamour, UMR CNRS 7198, F-54042 Nancy, France.
2013
ISSN: 0001-4966
DOI: 10.1121/1.4812255
Resume: The determination of the initial pressure at the bubble wall created by a discharge in heptane for micro-gap conditions cannot be determined straightforwardly by modeling the time-oscillations of the bubble. The resolution of the Gilmore equation gives the same solutions beyond 1 mu s typically for various sets of initial parameters, making impossible the determination of the initial pressure at the bubble wall. Furthermore, the very first instant of the bubble formation is not easily accessible at very short time scales because of the plasma emission. Since the pressure waves propagate in the liquid, it is much easier to gain information on the first instants of the bubble formation by studying the pressure field far from the emission source. Then, it is possible to deduce by modeling what happened at the beginning of the emission of the pressure waves. The proposed solution consists in looking at the oscillations affecting another bubble located at least twice farther from the interelectrode gap than the maximum radius reached by the discharge bubble. The initial plasma pressure can be determined by this method. (C) 2013 Acoustical Society of America. Equipe: Centre de Compétences : ERMIONE informatique et calcul |
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8626
2013
ISSN: 0277-786X
DOI: 10.1117/12.2010105
Equipe: Centre de Compétences : X-Gamma rayons X et spectroscopie |
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SYMMETRY-BASEL,
5(4):344-354
2013
ISSN: 2073-8994
DOI: 10.3390/sym5040344
Equipe: Département P2M : Surfaces et Spectroscopies |
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Carbohydrate Polymers,
93(2):401-411
2013
Resume: This work addresses the functionalization of chitosan thin films and its nanoliposomes blend films by a microwave-excited Ar/N2/H2 surface-wave plasma treatment which was found an effective tool to modify surface properties. Changes in the film properties (wettability, chemical composition, morphology) induced by the plasma treatment are studied using water contact angle measurements, X-ray photoelectron spectroscopy and scanning probe microscopy. The results suggest that hydrophilicity of the films is improved by plasma treatment in a plasma condition dependency manner. Water contact angle of chitosan films before and after plasma treatment are, respectively, 101° and 27°. Besides chemical changes on the surface, the nanoliposomes incorporation and plasma treatment also induce morphological modifications. Moreover, a correlation is found between the nanoliposomes composition and size, and the effects of plasma treatment. It is shown that the plasma treatment significantly improves the chitosan film functionalization. The effect of N2 content (88% and 100%) in the plasma gas mixture on the film etching is also pointed out. Equipe: Département CP2S : Expériences et Simulations des Plasmas Réactifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS |
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PHYSICAL REVIEW B,
87(7)
2013
ISSN: 1098-0121
Equipe: Département P2M : Surfaces et Spectroscopies |