Publications

• ART

Dirac cones, topological edge states, and nontrivial flat bands in two-dimensional semiconductors with a honeycomb nanogeometry

Efterpi Kalesaki, Christophe Delerue, Cristiane Morais Smith, Wouter Beugeling, Guy Allan, Daniel Vanmaekelbergh

We study theoretically two-dimensional single-crystalline sheets of semiconductors that form a honeycomb lattice with a period below 10 nm. These systems could combine the usual semiconductor properties with Dirac bands. Using atomistic tight-binding calculations, we show that both the atomic…

Physical Review X, 2014, 4 (1), pp.0110101. ⟨10.1103/PhysRevX.4.011010⟩. ⟨hal-00939871⟩

• COMM

Current-voltage characteristics of (Mo/Au)/AlGaN/GaN/Si Schottky diodes

H. Mosbahi, M. Charfeddine, M. Gassoumi, Christophe Gaquière, M.A. Zaidi, H. Maaref

The AlGaN/GaN high electron mobility transistors (HEMTs) is a promising candidate for microwave applications due to its high power and high temperature. owing to their large and direct band gap, as well as favorable transport properties. Moreover, III-V nitrides could be suitable for the emitters…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium X - Materials research for group IV semiconductors : growth, characterization and technological developments, 2014, Lille, France. ⟨hal-00961393⟩

• ART

Improved efficiency by the effect of strain on the structure of a solar cell based on GaInP/GaAs

Abdelkader Aissat, Rachid Bestam, Jean-Pierre Vilcot

This work is aimed at the study of GaInP-based photovoltaic cell. The effects of In content, lattice parameter mismatch and thickness of the SiO2 insulating layer on the characteristics and efficiency of the GaInP structure were investigated. We noticed that for higher In concentrations, the band…

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering, 2014, 3, pp.7038-7046. ⟨hal-00947584⟩

• COMM

Approach-to-equilibrium molecular dynamics for thermal conductivies and boundary conductances

Pier Luca Palla, Evelyne Lampin, Pierre-Arnaud Francioso, Fabrizio Cleri

Thermal transport is simulated at the atomic scale by approach-to-equilibrium molecular dynamics simulations (AEMD) [1]. In this method, a hot and a cold regions are delimited, before the approach-to-equilibrium is simulated by releasing the thermal constraint. The temperature difference between…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium D - Phonons and fluctuations in low dimensional structures, 2014, Lille, France. ⟨hal-00966169⟩

• ART

UWB cooperatif radar for localization and communication dedicated to guided transport

Tarik Tahri, Yassin El Hillali, Laila Sakkila, Atika Rivenq

Wireless technology for communication and localization in train applications are widely used. Ultra wide band appears as a very suitable technology for this kind of application, due to its large bandwidth, also to its good resistance to the interference and to multipath. In this paper, a new system…

International Journal of Intelligent Systems and Applications, 2014, 6, pp.27-33. ⟨10.5815/ijisa.2014.10.04⟩. ⟨hal-01056958⟩

• ART

Demonstrating kHz frequency actuation for conducting polymer microactuators

Ali Maziz, Cedric Plesse, Caroline Soyer, Claude Chevrot, Dominique Teyssié, Eric Cattan, Frederic Vidal

This paper reports results on ionic EAP micromuscles converting electrical into micromechanical response in open-air. Translation of small ion motion into large deformation in bending microactuator and its amplifi cation by fundamental resonant frequency are used as tools to demonstrate that small…

Advanced Functional Materials, 2014, 24, pp.4851-4859. ⟨10.1002/adfm.201400373⟩. ⟨hal-01058060⟩

• COMM

Step-conformal deposition of TiO2 and MnO2 electrodes on advanced silicon microstructures for 3D Li-ion microbatteries and micro-supercapacitors

Étienne Eustache, Camille Douard, Pascal Tilmant, Laurence Morgenroth, Pascal Roussel, Thierry Brousse, Christophe Lethien

To get autonomous smart microsystem, a miniaturized power source should be integrated. As the device is surface limited, the energy and power performances of commercially available planar microbatteries and micro-supercapacitors are not sufficient to reach this goal. To improve their performances…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, 2014, Lille, France. ⟨hal-00976637⟩

• COMM

Acousto-optic couplings in two-dimensional lithium niobate phoxonic crystal

Quentin Rolland, Samuel Dupont, Joseph Gazalet, Jean-Claude Kastelik

We investigate the acousto-optic couplings in two-dimensional infinite piezoelectric phoXonic crystal cavities. The periodic structure considered consists in a square array of air inclusions drilled in Lithium Niobate matrix. This structure allows the simultaneous confinement of acoustic and optic…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium D - Phonons and fluctuations in low dimensional structures, 2014, Lille, France. ⟨hal-00976642⟩

• COMM

[Invited] MEMS research, applications and results

S. Arscott

Workshop on Nanoscale Processing for MEMS and NEMS, 2014, Villeneuve d'Ascq, France. ⟨hal-00976620⟩

• COMM

Conception, réalisation et test d'un micro-capteur de pression Pirani pour un fonctionnement au voisinage de la pression atmosphérique

Mohammed Moutaoukiel, Abdelkrim Talbi, Romain Viard, Jean-Claude Gerbedoen, O. Elmazria, Etienne Okada, Alain Merlen, Philippe Pernod

Cette étude concerne la conception, la réalisation et le test d'un micro-capteur de pression basé sur l'effet Pirani. La structure consiste en un fil chaud suspendu par des ponts d'oxyde de proche en proche sur des cavités de taille nanométrique. Cela permet d'obtenir une…

17èmes Journées Nationales du Réseau Doctoral en Micro-Nanoélectronique, JNRDM 2014, 2014, Villeneuve d'Ascq, France. 2 p. ⟨hal-01020259⟩