Publications

• 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

Optical waveguiding properties into porous gallium nitride structures investigated by prism coupling technique

Bandar Alshehri, Seung-Min Lee, Jin-Ho Kang, Su-Hyun Gong, Sang-Wan Ryu, Yong-Hoon Cho, El Hadj Dogheche

In order to modulate the refractive index and the birefringence of Gallium Nitride (GaN), we have developed a chemical etching method to perform porous structures. The aim of this research is to demonstrate that optical properties of GaN can be tuned by controlling the pores density. GaN films are…

Applied Physics Letters, 2014, 105, 051906, 4 p. ⟨10.1063/1.4892528⟩. ⟨hal-01056953⟩

• Article dans une revue

Young's modulus extraction of epitaxial heterostructure AlGaN/GaN for MEMS application

Achraf Ben Amar, Marc Faucher, Virginie Brandli, Yvon Cordier, Didier Theron

This paper presents a Young's modulus extraction method for thin film group III-nitrides materials such as GaN, AlN, and its ternary AlGaN. The AlGaN/GaN heterostructures are grown by molecular beam epitaxy on Si (111) substrate and designed for MEMS applications. Various cantilevers with a…

Physica Status Solidi A (applications and materials science), 2014, 211, pp.1655-1659. ⟨10.1002/pssa.201330339⟩. ⟨hal-01044844⟩

• Communication dans un congrès

Preparation and study of 2-D semiconductors with Dirac type bands due to the honeycomb nanogeometry

Efterpi Kalesaki, Mark Pieter Boneschanscher, Jaco J. Geuchies, Christophe Delerue, Cristiane Morais Smith, Wiel H. Evers, Guy Allan, Thomas Altantzis, Sara Bals, Daniel Vanmaekelbergh

The interest in 2-dimensional systems with a honeycomb lattice and related Dirac-type electronic bands has exceeded the prototype graphene. We show that atomically coherent honeycomb superlattices of rocksalt (PbSe, PbTe) and zincblende (CdSe, CdTe) semiconductors can be obtained by nanocrystal…

SPIE Photonics West, OPTO 2014, Conference 8981 - Physics, Simulation, and Photonic Engineering of Photovoltaic Devices III, 2014, San Francisco, CA, United States. ⟨10.1117/12.2042882⟩. ⟨hal-00964400⟩

• Communication dans un congrès

Effects of deposition parameters on the composition of Cu(In,Ga)Se2 thin films deposited by magnetron pulsed DC sputtering

Thomas Aviles, Jean-Pierre Vilcot

Industrial Cu(In,Ga)Se2 (CIGS) thin films formation process generally require two steps : 1) Cu-In-Ga precursors deposition 2) crystallization under selenium atmosphere (H2Se). Unfortunately, hydrogen selenide is very hazardous, being the most toxic selenium compound. Nevertheless, recent works…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium A - Thin film chalcogenide photovoltaic materials, 2014, Lille, France. ⟨hal-00964159⟩

• Communication dans un congrès

High performance CMOS with enhanced property of mechanical flexibility

Emmanuel Dubois, Aurélien Lecavelier Des Etangs-Levallois, Justine Philippe, Sylvie Lepilliet, Francois Danneville, J.F. Robillard, Daniel Gloria, Christine Raynaud

CMOS Emerging Technologies Research Symposium, 2014, Grenoble, France. ⟨hal-00976625⟩

• Communication dans un congrès

Estimation of 60-GHz channels based on energy detection

Stephane Mebaley-Ekome, Laurent Clavier, Antoine Frappé, Eric Pierre Simon, Ilias Sourikopoulos

Estimation of time-varying channels is a common challenge for receiver architectures in wireless communications. Coherent receivers may require good knowledge of the channel impulse response for demodulation of the received symbols, after equalization of a dense multipath channel. However, very few…

2014 IEEE International Conference on Ultra-WideBand (ICUWB), Sep 2014, Paris, France. pp.68-73, ⟨10.1109/ICUWB.2014.6958953⟩. ⟨hal-03377051⟩

• Communication dans un congrès

Highly tunable Fabry-Perot resonators using piezoelectric phononic crystals

Bertrand Dubus, Marie -Fraise Ponge, Anne-Christine Hladky, Jerome O. Vasseur, Mai Phamthi

Theoretical and experimental analyses of piezoelectric stacks submitted to periodical electrical boundary conditions via electrodes, are conducted. These structures are shown to exhibit Bragg band gaps which are switched on or off by setting electrodes in short or open circuit. Band gap frequency…

IEEE International Ultrasonics Symposium (IUS), Sep 2014, Chicago, United States. paper 5B-6, 154-157, ⟨10.1109/ULTSYM.2014.0039⟩. ⟨hal-03300131⟩

• Communication dans un congrès

Estimation des fonctions de Green par corrélation de bruit : application pour la localisation et l'imagerie de défauts dans des plaques minces réverbérantes

Lynda Chehami, Emmanuel Moulin, Julien de Rosny, C. Prada

12ème Congrès Français d'Acoustique, CFA 2014, Apr 2014, Poitiers, France. Session APUG1 : Acoustique physique et propagation, papier CFA2014/152, 26-30. ⟨hal-00978412⟩

• Article dans une revue

Multipath component distance-based fingerprinting technique for non-cooperative outdoor localization in NLOS scenarios

Isabelle Vin, Davy Gaillot, Pierre Laly, M. Lienard, Pierre Degauque

Accurate localization of mobile phone users is needed for search and rescue applications or for electronic surveillance in urban or suburban areas. Assuming that the mobile station (MS) has been roughly localized by the cellular network or by any other means, we propose an approach using dedicated…

IEEE Transactions on Antennas and Propagation, 2014, 62, pp.4794-4798. ⟨10.1109/TAP.2014.2327142⟩. ⟨hal-01063879⟩