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References

Articles:

Gazeli, K., Noel, C., Clement, F., Daugé, C., Svarnas, P. and Belmonte, T.
Plasma Sources Science and Technology, 22:025020
2013

Resume: The origin of differences in the rotational temperatures of various molecules and ions (N-2(+)(B), OH(A) and N-2(C)) is studied in helium atmospheric-pressure guided streamers. The rotational temperature of N-2(+)(B) is room temperature. It is estimated from the emission band of the first negative system at 391.4 nm, and it is governed by the temperature of N-2(X) in the surrounding air. N-2(X) is ionized by direct electron impact in the outer part of the plasma. N-2(+)(B) is deactivated by collisions with N-2 and O-2. The rotational temperature of OH(A), estimated from the OH band at 306.4 nm, is slightly higher than that of N-2(+)(B). OH(A) is excited by electron impact with H2O during the first 100 ns of the applied voltage pulse. Next, OH(A) is produced by electron impact with OH(X) created by the quenching of OH(A) by N-2 and O-2. H2O diffuses deeper than N-2 into the plasma ring and the rotational temperature of OH(A) is slightly higher than that of N-2(+)(B). The rotational temperature of N-2(C), estimated from the emission of the second positive system at 315.9 nm, is governed by its collisions with helium. The gas temperature of helium at the beginning of the pulse is predicted to be several hundred kelvin higher than room temperature.

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

Hicks, J., Tejeda, A., Taleb-Ibrahimi, A., Nevius, M. S., Wang, F., Shepperd, K., Palmer, J., Bertran, F., Le Fèvre, P., Kunc, J., de Heer, W. A., Berger, C. and Conrad, E. H.
NATURE PHYSICS, 9(1):49-54
2013
ISSN: 1745-2473

Equipe: Département P2M : Surfaces et Spectroscopies

Pushkareva, I., Scott, C., Goune, M., Valle, N., Redjaïmia, A. and Moulin, A
ISIJ International, 53:1215-1223
2013

Equipe: Département SI2M : Microstructures et Contraintes

Margueron, Samuel, Bartasyte, Ausrine, Plausinaitiene, Valentina, Abrutis, Adulfas, Boulet, Pascal, Kubilius, Virgaudas and Saltyte, Zita
8626
2013
ISSN: 0277-786X

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

Vasseur, Guillaume, Fagot-Revurat, Yannick, Kierren, Bertrand, Sicot, Muriel and Malterre, Daniel
SYMMETRY-BASEL, 5(4):344-354
2013
ISSN: 2073-8994

Equipe: Département P2M : Surfaces et Spectroscopies

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

Melchior, P., Rollinger, M., Thielen, P., Alebrand, S., Bierbrauer, U., Schneider, C., Gottwald, M., Hehn, M., Mangin, S., Cinchetti, M. and Aeschlimann, M.
Physical Review B - Condensed Matter and Materials Physics, 88(10)
2013

Equipe: Département P2M : Nanomagnétisme et Electronique de Spin

Nguyen, V.S., Badie, L., Sénéchault, E., Blampain, E., Vincent, B., Venet, C., Elmazria, O. and Rouxel, D.
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 60(10):2039-2043
2013

Equipe: Centre de Compétences : MiNaLor micro et nanotechnologies

Ben Youssef, I., Alem, H., Sarry, F., Elmazria, O., Jimenez Rioboo, R., Arnal-Hérault, C. and Jonquières, A.
Sensors and Actuators, B: Chemical, 185:309-320
2013

Equipe: Centre de Compétences : MiNaLor micro et nanotechnologies

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

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