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Affichage de 6781 à 6790 sur 16174

Article dans une revue

Enhancement of thermoelectric power factor in NaxCoO2/Au multilayers

Xiaohui Zhao, Haifeng Wang, Shufang Wang, El Hadj Dogheche, Jianglong Wang, Guangsheng Fu

NaxCoO2/Au thin film multilayers, with a thickness of the Au layer of 0.5–12 nm, have been fabricated on c-Al2O3 by post annealing of the CoO/Au thin film multilayers in Na vapor at high temperature in air. X-ray diffraction measurements revealed that the resulting NaxCoO2 layer was c-axis oriented…

RSC Advances, 2014, 4 (100), pp.57148-57152. ⟨10.1039/C4RA07319C⟩. ⟨hal-03560771⟩

Article dans une revue

[Review] Generation of transversal envelope soliton in polymeric and wooden rods

M. de Billy, Anne-Christine Hladky

This paper is concerned with the probing of the transversal envelope solitons propagation in circular waveguides when a set of requirements (non-linearity and dispersion) are fulfilled in the waveguide and balanced. The basic idea is to analyze the shape of an acoustic pulse after it has traveled…

Ultrasonics, 2014, 54, pp.1281-1288. ⟨10.1016/j.ultras.2014.01.016⟩. ⟨hal-00969120⟩

Article dans une revue

Bragg band gaps tunability in an homogeneous piezoelectric rod with periodic electrical boundary conditions

Sébastien Degraeve, Christian Granger, Bertrand Dubus, Jerome O. Vasseur, Mai Pham Thi, Anne-Christine Hladky

An homogeneous piezoelectric rod is shown to exhibit Bragg band gaps when an electrical boundary condition is applied periodically with the help of metallic electrodes. An analytical model is developed which formulation depends on the applied electric boundary condition and reveals that Bragg band…

Journal of Applied Physics, 2014, 115, 194508, 8 p. ⟨10.1063/1.4876757⟩. ⟨hal-00995265⟩

Article dans une revue

From 'petal effect' to 'lotus effect' on the highly flexible Silastic S elastomer microstructured using a fluorine based reactive ion etching process

Christophe Frankiewicz, Farzam Zoueshtiagh, Abdelkrim Talbi, Jeremy Streque, Philippe Pernod, Alain Merlen

A fluorine-based reactive ion etching (RIE) process has been applied on a new family of silicone elastomers named 'Silastic S' for the first time. Excellent mechanical properties are the principal advantage of this elastomer. The main objective of this study was (i) to develop a new…

Journal of Micromechanics and Microengineering, 2014, 24 (11), ⟨10.1088/0960-1317/24/11/115008⟩. ⟨hal-03277849⟩

Article dans une revue

Electronic and physico-chemical properties of nanometric boron delta-doped diamond structures

Gauthier Chicot, Alexandre Fiori, P.N. Volpe, Thu Nhi Tran Thi, Jean-Claude Gerbedoen, Jessica Bousquet, M.P. Alegre, J.C. Pinero, D. Araujo, F. Jomard, Ali Soltani, Jean-Claude de Jaeger, J. Morse, J. Härtwig, Nicolas Tranchant, C. Mer-Calfati, Jean-Charles Arnault, Julien Delahaye, Thierry Grenet, David Eon, Franck Omnès, Julien Pernot, Etienne Bustarret

Heavily boron doped diamond epilayers with thicknesses ranging from 40 to less than 2 nm and buried between nominally undoped thicker layers have been grown in two different reactors. Two types of [100]-oriented single crystal diamond substrates were used after being characterized by X-ray white…

Journal of Applied Physics, 2014, 116, pp.083702. ⟨10.1063/1.4893186⟩. ⟨hal-01058487⟩

Communication dans un congrès

Image and many-body effects in ultra-thin gate insulator MOSFET with In0.53Ga0.47As channel material and their influence on gate leakage current

Gabriel Mugny, D. Rideau, F. Triozon, Yann-Michel Niquet, F.G. Pereira, A. Soussou, I. Duchemin, D. Garetto, C. Tavernier, H. Jaouen, Christophe Delerue

We study the influence of many-body and image force corrections on charge distribution, threshold voltage and tunnel current in fully-depleted silicon-on-insulator (FDSOI) ultra-thin gate insulator MOSFETs. We show that image correction slightly increases threshold voltage in Si MOSFETs and that…

17èmes Journées Nationales du Réseau Doctoral en Micro-Nanoélectronique, JNRDM 2014, 2014, Villeneuve d'Ascq, France. 5 p. ⟨hal-01020291⟩

Communication dans un congrès

Characterization of multi-layered nanopore structure

Xiaokun Ding, Nicolas Tiercelin, Philippe Pernod, Vladimir Preobrazhensly, Yujun Song, Alexey Klimov

Hybridization of nanostructures opens new avenues for the synthesis of nano-architectures with multi-function and novel physicochemical properties. In this paper, we developed nanosphere template assisted physical vapor deposition to fabricate ordered multi-layered nanostructures utilizing Ag/…

17èmes Journées Nationales du Réseau Doctoral en Micro-Nanoélectronique, JNRDM 2014, 2014, Villeneuve d'Ascq, France. 3 p. ⟨hal-01020258⟩

Article dans une revue

Simulation and measurement of the steady-state temperature in multi-core cables

Christophe Holyk, H.D. Liess, Sébastien Grondel, H. Kanbach, F. Loos

This paper reviews, adapts and compares two analytical models for computing the steady-state temperature in multi-core cables. Both models are based on the transformation of the complex geometry of a real cable into a new single-core cable having equivalent thermal properties and simplified…

Electric Power Systems Research, 2014, 116, pp.54-66. ⟨10.1016/j.epsr.2014.05.001⟩. ⟨hal-01005126⟩

Communication dans un congrès

A computational model for the investigation of phonon-limited charge transport in 2D systems

Jing Li, Christophe Delerue, Yann-Michel Niquet, François Triozon, Luigi Genovese

A computational model has been developed for phonon-limited charge transport in 2D systems. Currently, this model is used to study transport in graphene and silicon thin films. The results obtained so far show a good agreement with experiment

IWCE 2014 - 17th International Workshop on Computational Electronics, Jun 2014, Paris, France. pp.227-228. ⟨hal-01005699⟩

Article dans une revue

Physique des fluides aux échelles microscopiques pour l'ingénierie des microsystèmes : fabrication et caractérisation

Renaud Dufour, Simon Laurette, Thomas Dargent, Maxime Harnois, Nour Eddine Bourzgui, V. Thomy

Les notions principales rencontrées en microfluidique sont mises en lumières dans ce module. Après une introduction générale sous forme de cours magistraux, les étudiants sont confrontés à des problèmes de dimensionnement de microcanaux à l'aide du logiciel COMSOL Multiphysique®. La suite de l…

Journal sur l'enseignement des sciences et technologies de l'information et des systèmes, 2014, 13, 0002, 7 p. ⟨10.1051/j3ea/2014002⟩. ⟨hal-00996921⟩