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Publications: Articles

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References

Articles:

Derkaoui, N., Rond, C., Gries, T., Henrion, G. and Gicquel, A.
Journal of Physics D: Applied Physics, 47:205201
2014

Resume: The electron temperature and electron density are measured in a microwave (MW) plasma-assisted chemical vapour diamond deposition reactor for different experimental conditions by varying the substrate temperature, methane content and MW power density. Optical emission spectroscopy (OES) and MW interferometry are used to probe the discharge generated in a stainless steel resonant cavity excited at a frequency of 2.45 GHz. Changing the substrate temperature from 630 to 900 ?C does not show any significant influence on the electron temperature or on the electron density. Increasing the methane content from 0 to 10% does not lead to any modification of the electron temperature or density. However between 10% and 20% CH, a decrease of the electron density is observed which may be attributed to soot particle formation. The electron density increases in the range of (1.2-10) x 1011 cm-3 from moderate power density conditions (50 hPa/1000 W) to high power density conditions (250 hPa/3500 W). OES measurements show that the electron temperature exhibits a flat axial profile in the plasma bulk and ranges from 14 000K at (25 hPa/600 W) to 10 500K at (400 hPa/3000 W).

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

Escande, Vincent, Garoux, Laetitia, Grison, Claire, Thillier, Yann, Debart, Francoise, Vasseur, Jean-Jacques, Boulanger, Clothilde and Grison, Claude
Applied Catalysis., B, 146:279-288
2014

Resume: Metallophyte plants derived from phytoextn. are used as starting materials to prep. novel polymetallic catalysts. Polymetallic catalyst activity is used in many Lewis acid catalyzed reactions according to the polymetallic catalyst prepn. The synergetic catalysis of these systems leads to efficient syntheses of complex biomols. such as dihydropyrimidinone, 5'-capped DNA and RNA, and glycosyl aminoacid. These new polymetallic catalysts also bring new possibilities in Green Catalysis, that we named "Ecol. Catalysis". [on SciFinder(R)]

Equipe: Département CP2S : Chimie et électrochimie des matériaux

Szymczak, Jonathan, Legeai, Sophie, Michel, Stéphanie, Diliberto, Sébastien, Stein, Nicolas and Boulanger, Clotilde
Electrochimica Acta, 137(0):586-594
2014

Mots clefs: Bismuth telluride Ionic liquid Electrodeposition Thermoelectricity

Resume: Abstract In this paper, we report the electrodeposition of stoichiometric Bi2Te3 compound using an ionic liquid binary mixture: 1-ethyl-1-octyl-piperidinium bis(trifluoromethylsulfonyl)imide: 1-ethyl-1-octyl-piperidinium bromide (EOPipTFSI:EOPipBr 95:5 (mol%)). The use of this mixture allows to reach a higher solubility of Bi(III) and Te(IV) precursors compared to pure EOPipTFSI ionic liquid in which Te(IV) salts are not soluble. Moreover, this electrolyte presents an extended cathodic stability, allowing the study of electrochemical processes that occur at high cathodic potential values. A detailed voltammetric study of electrochemical systems was performed for electrolytes containing different [Bi(III)]/[Te(IV)] ratio, allowing the attribution of cathodic signals to electrochemical processes. Experimental conditions leading to the deposition of stoichiometric Bi2Te3 were then determined by varying deposition potential and electrolyte composition, using potentiostatic experiments followed by XRD and SEM-EDX analysis. By varying the concentration of precursors in the electrolyte, mirror-like coatings, adherent and homogeneous, were obtained. Electroplated Bi2Te3 presents n-type conductivity with a Seebeck coefficient equal to ?70 ?V K?1 and an electrical resistivity of 133 ?? m.

Equipe: Département CP2S : Chimie et électrochimie des matériaux

Dubois, J. -M. and Belin-Ferré, E.
ACTA PHYSICA POLONICA A, 126(2):453-457
2014
ISSN: 0587-4246

Equipe: Département CP2S : Métallurgie et Surfaces

Baringhaus, Jens, Ruan, Ming, Edler, Frederik, Tejeda, Antonio, Sicot, Muriel, Taleb-Ibrahimi, Amina, Li, An-Ping, Jiang, Zhigang, Conrad, Edward H., Berger, Claire, Tegenkamp, Christoph and de Heer, Walt A.
NATURE, 506(7488):349-354
2014
ISSN: 0028-0836

Equipe: Département P2M : Surfaces et Spectroscopies

Dubois, Jean-Marie and Belin-Ferre, Esther
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS, 15(3)
2014
ISSN: 1468-6996

Equipe: Département CP2S : Métallurgie et Surfaces

Geandier, G., Dehmas, M., Mourot, M., Aeby-Gautier, E., Denis, S., Martin, O. and Karnatak, N.
Journal of heat treatments and materials, 69:54--59
2014

Equipe: Département SI2M : Microstructures et Contraintes

Esin, V.A., Denand, B., Le Bihan, Q., Dehmas, M., Teixeira, J., Geandier, G., Denis, S., Sourmail, T. and Aeby-Gautier, E.
Acta Materialia, 80:118--131
2014
ISSN: 1359-6454

Equipe: Département SI2M : Microstructures et Contraintes

Gangineni, R.B., Bellouard, C., Duluard, A., Negulescu, B., Baraduc, C., Gaudin, G. and Tiusan, C.
Applied Physics Letters, 104(18)
2014

Equipe: Département P2M : Nanomagnétisme et Electronique de Spin

Perevoshchikova, Nataliya, Appolaire, Benoit, Teixeira, Julien, Aeby-Gautier, Elisabeth and Denis, Sabine
Computational Materials Science, 82:151-158
2014

Equipe: Département SI2M : Microstructures et Contraintes

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