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

Electro-optic and converse piezoelectric coefficients of epitaxial thin films : GaN grown on Si, and (Sr,Ba)Nb2O6 (SBN) grown on Pt coated MgO (poster)

Mireille Cuniot-Ponsard, Irma Saraswati, Suk-Min Ko, Mathieu Halbwax, Yong-Hoon Cho, El Hadj Dogheche

We report the first measurement of the (r13, r33) Pockels electro-optic coefficients in a SBN thin film and in a GaN thin film grown on silicon. The converse-piezoelectric and electro-absorptive coefficients are simultaneously determined.

Conference on Lasers and Electro-Optics, CLEO 2014, Laser Science to Photonic Applications, 2014, San Jose, CA, United States. ⟨hal-00975792⟩

• Article dans une revue

Electro-optic and converse-piezoelectric properties of epitaxial GaN grown on silicon by metal-organic chemical vapor deposition

Mireille Cuniot-Ponsard, Irma Saraswati, S.M. Ko, Mathieu Halbwax, Y.H. Cho, El Hadj Dogheche

We report the measurement of the (r13, r33) Pockels electro-optic coefficients in a GaN thin film grown on a Si(111) substrate. The converse piezoelectric (d33) and electro-absorptive coefficients are simultaneously determined. Single crystalline GaN epitaxial layers were grown with a AlGaN buffer…

Applied Physics Letters, 2014, 104, 101908, 4 p. ⟨10.1063/1.4868427⟩. ⟨hal-00964286⟩

• Article dans une revue

Sub-THz characterisation of multi-walled carbon nanotube thin films using vector network analyser

S. Puthukodan, E. Dadrasnia, V.K.T. Vinod, H.K. Nguendon, H. Lamela, Guillaume Ducournau, Jean-Francois Lampin, F. Garet, J.L. Coutaz, D.M. Lee, S. Baik

A vector network analyser is used to study the electrical properties of multi-walled carbon nanotube (MWCNT) thin films deposited on a fused quartz substrate in the sub-terahertz (THz) frequency ranges of 220-325 GHz (WR3.4) and 325-500 GHz (WR2.2). The experiment is performed in free space. The…

Electronics Letters, 2014, 50, pp.297-299. ⟨10.1049/el.2013.4136⟩. ⟨hal-00954474⟩

• 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⟩