Publications

• Communication dans un congrès

UWB channel modeling for objects evolving in impulsive environnements

Nourddine Azzaoui, Laurent Clavier

We consider channel modeling issues in the context where communicating objects are evolving in impulsive environments. It was shown recently that α-stable random processes are attractive solution for representing the ultra wide band communication channel in relatively large spatial areas. In this…

Wireless Communications and Networking Conference Workshops (WCNCW), 2012 IEEE, 2012, France. pp.191 - 195, ⟨10.1109/GLOCOMW.2010.5700305⟩. ⟨hal-00732995⟩

• Article dans une revue

Phonons in Slow Motion: Dispersion Relations in Ultra-Thin Si Membranes

John Cuffe, Emigdio Chavez, Andrey Shchepetov, Pierre-Olivier Chapuis, El Houssaine El Boudouti, Francesc Alzina, Timothy Kehoe, Jordi Gomis-Bresco, Damian Dudek, Yan Pennec, Bahram Djafari-Rouhani, Mika Prunnila, Jouni Ahopelto, Clivia. M. Sotomayor Torres

We report the changes in dispersion relations of hypersonic acoustic phonons in free-standing silicon membranes as thin as \sim 8 nm. We observe a reduction of the phase and group velocities of the fundamental flexural mode by more than one order of magnitude compared to bulk values. The…

Nano Letters, 2012, 12 (7), pp.3569-3573. ⟨10.1021/nl301204u⟩. ⟨hal-00732480⟩

• Article dans une revue

Top electrode size effect on hysteresis loops in piezoresponse force microscopy of Pb(Zr,Ti)O3-film on silicon structures

S.L. Bravina, N.V. Morozovsky, E.A. Eliseev, A.N. Morozovska, J. Costecalde, Caroline Soyer, Denis Remiens, D. Deresmes

• Article dans une revue

Low frequency dielectric loss of metal/insulator/organic semiconductor junctions in ambient conditions

Romuald Ledru, Stéphane Pleutin, Bruno Grouiez, Damien Zander, H. Bejbouji, Kamal Lmimouni, Dominique Vuillaume

The complex admittance of metal/oxide/pentacene thin film junctions is investigated under ambient conditions. At low frequencies, a contribution attributed to proton diffusion through the oxide is seen. This diffusion is shown to be anomalous and is believed to be also at the origin of the bias…

Organic Electronics, 2012, 13 (10), pp.1916-1924. ⟨10.1016/j.orgel.2012.04.035⟩. ⟨hal-00787369⟩

• Article dans une revue

Combinatorial approaches to understanding polytypism in III-V nanowires

J. Johansson, J. Bolinsson, M. Ek, P. Caroff, K.A. Dick

ACS Nano, 2012, 6, pp.6142-6149. ⟨10.1021/nn301477x⟩. ⟨hal-00786988⟩

• Article dans une revue

Mechanism of ohmic Cr/Ni/Au contact formation on p-GaN

L. Magdenko, G. Patriarche, David Troadec, O. Mauguin, E. Morvan, M.A. Di Forte-Poisson, K. Pantzas, A. Ougazzaden, A. Martinez, A. Ramdane

Journal of Vacuum Science and Technology, 2012, 30, pp.022205-1-5. ⟨10.1116/1.3688486⟩. ⟨hal-00788195⟩

• Communication dans un congrès

Le PbxSr1-xTiO3 : une alternative au BaxSr1-xTiO3 pour applications microondes accordables

Freddy Ponchel, X. Lei, Denis Remiens, Jean-François Legier, T. Lasri, Gang Wang, X. Dong

12èmes Journées de Caractérisation Microondes et Matériaux, JCMM 2012, 2012, Chambéry, France. session S2, papier ID69, 1-4. ⟨hal-00806630⟩

• Communication dans un congrès

Experimental demonstration of waveguiding in honeycomb and square-lattice silicon photonic crystal membranes

Daniel Puerto, A. Griol, J.M. Escalante, Bahram Djafari-Rouhani, Yan Pennec, Vincent Laude, J.C. Beugnot, Alejandro Martínez

SPIE Conference on Photonic Crystal Materials and Devices X, Apr 2012, France. pp.84250X, ⟨10.1117/12.921689⟩. ⟨hal-00759374⟩

• Article dans une revue

UWB short range radar for road applications

Laila Sakkila, Charles Tatkeu, Atika Rivenq, Yassin El Hillali, Jean-Michel Rouvaen

In this paper, a short range radar system based on UWB -Ultra-Wide-Band- technology for road safety application is presented. During a long time, the radar and its applications were reserved to national defence, air security domains or weather services. Since a few years, with the emergence of new…

Physical and Chemical News, 2012, 64, p20-29. ⟨hal-00992106⟩

• Article dans une revue

Comment on ''Observation of anomalous acoustic phonon dispersion in SrTiO3 by broadband stimulated Brillouin scattering'' [Appl. Phys. Lett. 98, 211907 (2011)]

Arnaud Devos, Y.C. Wen, P.A. Mante, C.K. Sun

Applied Physics Letters, 2012, 100, pp.206101-1. ⟨10.1063/1.4717244⟩. ⟨hal-00787469⟩