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2013

Articles:

Cortes, R., Tejeda, A., Lobo-Checa, J., Didiot, C., Kierren, B., Malterre, D., Merino, J., Flores, F., Michel, E. G. and Mascaraque, A.
PHYSICAL REVIEW B, 88(12)
2013
ISSN: 1098-0121

Equipe: Département P2M : Surfaces et Spectroscopies

Devolder, T., Tahmasebi, T., Eimer, S., Hauet, T. and Andrieu, S.
Applied Physics Letters, 103(24)
2013

Equipe: Département P2M : Nanomagnétisme et Electronique de Spin

Zhang, H.Y., Cleymand, F., Noel, C., Kahn, C.J.F., Linder, M., Dahoun, A., Henrion, G. and Arab-Tehrany, E.
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

Martin, J., Melhem, A., Shchedrina, I., Duchanoy, T., Nominé, A., Henrion, G., Czerwiec, T. and Belmonte, T.
Surface and Coatings Technology, 221:70
2013

Resume: The plasma electrolytic oxidation (PEO) of aluminium alloys is investigated for different electrical working conditions using a pulsed bipolar current supply. A particular attention is paid to the effect of the anodic current density (from 10 to 90 A dm-2) and current pulse frequency (from 100 to 900 Hz) on the resulting oxide layer. Micro-discharges are characterized during the process by means of fast video imaging with a time and a space resolution of 8 μs and 0.017 mm2, respectively. Correlations are established between themicro-discharge characteristics (surface density, lifetime and size) and the elaborated oxide layers (morphology, growth rate and surface roughness). The highest coating growth rate measured (2.1 μm min-1) is achieved with the combination of the highest current density (75.7 A dm-2) and the highest current pulse frequency (900 Hz). Within these specific current conditions it is concluded that the detrimental effects of numerous micro-discharges are minimized. The results also show that the surface roughness may be largely affected by the presence of long-lived and large micro-discharges which develop over the processed surface. The strongest micro-discharges (live duration up to 0.3 ms and cross-sectional area up to 1 mm2) are mainly observed with the combination of the highest current density (75.7 A dm-2) and the lowest current pulse frequency (100 Hz).

Equipe: Département CP2S : Expériences et Simulations des Plasmas Réactifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS

Drevlak, M., Brochard, F., Helander, P., Kisslinger, J., Mikhailov, M., Nührenberg, C., Nührenberg, J. and Turkin, Y.
Contributions to Plasma Physics, 53:459-468
2013

Resume: This work presents the physics design for a simple quasi-axially symmetric stellarator. A plasma configuration described by a modest number of Fourier coefficients was found to establish this symmetry with good accuracy. The low rotational transform results in a relatively simple coil set exhibiting low curvatures and comfortable clearance between adjacent coils. As another consequence, the maximum achievable plasma pressure will be limited to about 0.5%. An experiment along the lines proposed would allow an exploration of the confinement properties of a quasi-axially symmetric configuration. ((c) 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

Equipe: Département CP2S : Expériences et Simulations des Plasmas Réactifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS

Dulcy, J.
Techniques de lâ??ingénieur, M1223:46p
2013

Equipe: Département CP2S : Expériences et Simulations des Plasmas Réactifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS

Kozelj, P., Jazbec, S., Vrtnik, S., Jelen, A., Dolinsek, J., Jagodic, M., Jaglicic, Z., Boulet, P., de Weerd, M. C., Ledieu, J., Dubois, J. M. and Fournee, V.
PHYSICAL REVIEW B, 88(21)
2013
ISSN: 1098-0121

Equipe: Département CP2S : Métallurgie et Surfaces

Kozelj, P., Jazbec, S., Vrtnik, S., Jelen, A., Dolinsek, J., Jagodic, M., Jaglicic, Z., Boulet, P., de Weerd, M. C., Ledieu, J., Dubois, J. M. and Fournee, V.
PHYSICAL REVIEW B, 88
2013
ISSN: 1098-0121

Equipe: Centre de Compétences : X-Gamma rayons X et spectroscopie

Soukiassian, Patrick, Wimmer, Erich, Celasco, Edvige, Giallombardo, Claudia, Bonanni, Simon, Vattuone, Luca, Savio, Letizia, Tejeda, Antonio, Silly, Mathieu, D'angelo, Marie, Sirotti, Fausto and Rocca, Mario
NATURE COMMUNICATIONS, 4
2013
ISSN: 2041-1723

Equipe: Département P2M : Surfaces et Spectroscopies

Geandier, G., Dehmas, M., Mourot, M., Aeby-Gautier, E., Denis, S., Martin, O. and Karnatak, N.
Materials Science Forum, 768-769:313-320
2013

Equipe: Département SI2M : Microstructures et Contraintes

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