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Plasma Sources Science and Technology,
20:024004
2011
Equipe: Département CP2S : Expériences et Simulations des Plasmas Réactifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS |
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PLASMA SOURCES SCIENCE & TECHNOLOGY,
20(2)
2011
ISSN: 0963-0252
Resume: This paper describes several specific aspects of atmospheric plasma deposition carried out with a microwave resonant cavity. Deposition over a wide substrate is first studied. We show that high deposition rates (several hundreds of mu m h(-1)) are due to localization of fluxes on the substrate by convection when slightly turbulent flows are used. Next, we describe possible routes to localize deposition over a nanometre-sized area. Scaling down atmospheric plasma deposition is possible and two strategies to reach nanometre scales are described. Finally, we study self-organization of SiO(2) nanodots deposited by chemical vapour deposition at atmospheric pressure enhanced by an Ar-O(2) micro-afterglow operating at high temperature (>1200 K). When the film being deposited is thin enough (similar to 500 nm) nanodots are obtained and they can be assembled into threads to create patterned surfaces. When the coating becomes thicker (similar to 1 mu m), and for relatively high content in HMDSO, SiO(2) walls forming hexagonal cells are obtained. Equipe: Centre de Compétences : ERMIONE informatique et calcul |
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Corrosion Science,
53(5):1639-1645
2011
Equipe: Département CP2S : Surface et Interface, réactivité chimique des matériaux |
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Physical Review B - Condensed Matter and Materials Physics,
83(18)
2011
Equipe: Département P2M : Nanomagnétisme et Electronique de Spin |
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IEEE Sensors Journal,
11(6):1458-1464
2011
Equipe: Centre de Compétences : MiNaLor micro et nanotechnologies |
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ACS Nano,
5:9052
2011
Equipe: Département CP2S : Matériaux à propriétés thermoélectriques |
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PHILOSOPHICAL MAGAZINE,
91(19-21, SI):2894-2903
2011
ISSN: 1478-6435
Equipe: Département CP2S : Métallurgie et Surfaces |
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Industrial & Engineering Chemistry Research,
50(9):5307-5315
2011
Equipe: Département CP2S : Chimie et électrochimie des matériaux |
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Acta Materialia,
59(9):3636-3645
2011
ISSN: 1359-6454
Resume: Two synchrotron diffraction techniques, three-dimensional X-ray diffraction and Laue microdiffraction, are applied to studying the deformation behaviour of individual grains embedded in a Cu(74)Al(23)Be(3) superelastic shape memory alloy. The average lattice rotation and the intragranular heterogeneity of orientations are measured during in situ tensile tests at room temperature for four grains of mean size similar to 1 mm. During mechanical loading, all four grains rotate and the mean rotation angle increases with austenite deformation. As the martensitic transformation occurs, the rotation becomes more pronounced, and the grain orientation splits into several sub-domains: the austenite orientation varies on both sides of the martensite variant. The mean disorientation is similar to 1 degrees. Upon unloading, the sub-domains collapse and reverse rotation is observed. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. Equipe: Département SI2M : Microstructures et Contraintes |
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PHILOSOPHICAL MAGAZINE,
91(19-21, SI):2870-2878
2011
ISSN: 1478-6435
Equipe: Département CP2S : Métallurgie et Surfaces |