Publications

• Communication dans un congrès

MIMO and diversity techniques in tunnels

M. Lienard, Pierre Degauque, J.M. Molina-Garcia-Pardo, C. Sanchis-Borras

To improve the performances of a communication link, both in terms of capacity and bit error rate, MIMO technique is a solution which has been widely studied. However, in road or railway tunnels, the waves are guided by the structure and the angular spread of the rays, both at the transmitting side…

2nd International Conference on Computing, Management and Telecommunications, ComManTel 2014, 2014, Da Nang, Vietnam. paper 1569882487, 75-79, ⟨10.1109/ComManTel.2014.6825582⟩. ⟨hal-01005130⟩

• Communication dans un congrès

Etude expérimentale du phénomène d'auto-collimation d'une source cylindrique ultrasonore insérée dans un cristal phononique

B. Morvan, A. Tinel, Jerome O. Vasseur, R. Sainidou, P. Rembert, N. Swinteck, P. Deymier

12ème Congrès Français d'Acoustique, CFA 2014, 2014, Poitiers, France. ⟨hal-00978396⟩

• Communication dans un congrès

Description statistique du comportement de la fonction de Green dans un milieu réverbérant : applications à la localisation de source

Hossep Achdjian, Emmanuel Moulin, Farouk Benmeddour, Jamal Assaad

12ème Congrès Français d'Acoustique, CFA 2014, 2014, Poitiers, France. Session APUG1 : Acoustique physique et propagation, papier CFA2014/187, 46-51. ⟨hal-00978409⟩

• 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⟩

• Communication dans un congrès

Scale effects induced by imperfect interfaces in nanomaterials transport properties

Fabio Pavanello, F. Manca, Pier Luca Palla, Evelyne Lampin, Fabrizio Cleri, Stefano Giordano

One of the crucial factors governing the physical properties of nanomaterials is the complex behavior of the interfaces[1]. While at the macroscopic level their specific role is usually neglected, in nanostructured systems the properties of the contact between phases have to be carefully defined.…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium E - Defect-induced effects in nanomaterials, 2014, Lille, France. ⟨hal-00964099⟩

• Communication dans un congrès

Distributional upper bound on the interference in spatial wireless multiuser ultrawideband communication systems

Gareth W. Peters, Ido Nevat, Laurent Clavier, François Septier

We develop a novel distributional upper bound on the interference created in an ultra-wideband wireless communication systems under two general assumptions: the first is that there is an unknown number of interferers who are distributed according to a homogeneous Poisson point process randomly in…

IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2014, 2014, Florence, Italy. pp.5764-5768, ⟨10.1109/ICASSP.2014.6854708⟩. ⟨hal-01056963⟩

• Article dans une revue

Near-self-imaging cavity for three-mode optoacoustic parametric amplifiers using silicon microresonators

J. Liu, F. A. Torres, Y. Ma, C. Zhao, L. Ju, D. G. Blair, S. Chao, I. Roch-Jeune, R. Flaminio, C. Michel, K.Y. Liu

Three-mode optoacoustic parametric amplifiers (OAPAs), in which a pair of photon modes are strongly coupled to an acoustic mode, provide a general platform for investigating self-cooling, parametric instability and very sensitive transducers. Their realization requires an optical cavity with…

Applied optics, 2014, 53, pp.841-849. ⟨10.1364/AO.53.000841⟩. ⟨hal-00966071⟩

• Article dans une revue

Dielectric relaxation analysis of Pb(Zr_0.54,Ti_0.46)O₃ thin films: electric field dependence

Freddy Ponchel, N. Sama, Denis Remiens, T. Lasri

350 nm-thick Perovskite PbZr0.54Ti0.46O3 (PZT) thin films were deposited on Al2O3 substrates by sputtering with and without an additional 10-nm-thick TiOx buffer layer. X-ray diffraction patterns showed that in presence of TiOx buffer layer, PZT film was highly oriented along the (111) direction…

• Article dans une revue

Cross-talk artefacts in Kelvin probe force microscopy imaging : a comprehensive study

Sophie Barbet, Michka Popoff, Heinrich Diesinger, D. Deresmes, Didier Theron, Thierry Melin

We provide in this article a comprehensive study of the role of ac cross-talk effects in Kelvin Probe Force Microscopy (KPFM), and their consequences onto KPFM imaging. The dependence of KPFM signals upon internal parameters such as the cantilever excitation frequency and the projection angle of…

Journal of Applied Physics, 2014, 115 (14), pp.144313. ⟨10.1063/1.4870710⟩. ⟨hal-00981142⟩

• Communication dans un congrès

Matériaux lithiés obtenus par dépôt physique et chimique en phase vapeur pour microbatterie Li-ion

Manon Letiche, Etienne Eustache, Pascal Roussel, Christophe Lethien

Journées Nord-Ouest Européennes des Jeunes Chercheurs, JNOEJC 2014, 2014, Villeneuve d'Ascq, France. ⟨hal-01009970⟩