Publications

• Article dans une revue

Coplanar liquid crystal reconfigurable phase-shifters

Fehim Sahbani, Nicolas Tentillier, Christian Legrand, Karine Blary, A. Gharsallah, A. Gharbi

A coplanar liquid crystal phase-shifter is presented and characterized in the frequency range of 5–40 GHz. The interest of this structure lies in the technological realization which is very simple. The phase-shift variation is of 0.2°/cm/GHz for an attenuation of 2.5 dB/cm at 40 GHz. These…

Molecular Crystals and Liquid Crystals, 2011, Issue 1: Proceedings of the 23rd International Liquid Crystal Conference (ILCC 2010) Part III of VIII Submit an article, 542, pp.204-212. ⟨10.1080/15421406.2011.570587⟩. ⟨hal-00795916⟩

• Article dans une revue

A 45° silicon mirror for acoustic propagation parallel to the plane of the substrate

S. Wang, Julien Carlier, Pierre Campistron, Wei-Jiang Xu, Dorothée Debavelaere-Callens, Bertrand Nongaillard, Assane Ndieguene, X. Zhao

The interest of a thin silicon oxide layer on a {110} silicon crystal planes used as 45° acoustical mirrors for reflection has been demonstrated. Passive mirror-like planes (groove depth ∼ 150 μm) were fabricated by wet chemical etching of (100) silicon. High frequency acoustical longitudinal waves…

Journal of Physics: Conference Series, 2011, 269, pp.012009-1-10. ⟨10.1088/1742-6596/269/1/012009⟩. ⟨hal-00572671⟩

• Autre publication scientifique

Fabrication et caractérisation de transistor à base de graphène nano ruban en vue d'application haute fréquence

Nan Meng

2011. ⟨hal-00574524⟩

• Communication dans un congrès

Electromagnetism in multicoaxial negative-index metamaterial cables

Bahram Djafari-Rouhani, M. Kushwaha

American Physical Society March Meeting, APS March Meeting 2011, 2011, Dallas, TX, United States. ⟨hal-00579034⟩

• Communication dans un congrès

Scanning gate transconductance microscopy and spectroscopy of a mesoscopic ring

B. Hackens, F. Martins, S. Faniel, V. Bayot, M. Pala, H. Sellier, S. Huant, L. Desplanque, X. Wallart

American Physical Society March Meeting, APS March Meeting 2011, 2011, Dallas, TX, United States. ⟨hal-00579035⟩

• Communication dans un congrès

Gallium nitride approach for MEMS resonators with highly tunable piezo-amplified transducers

Marc Faucher, Yvon Cordier, Fabrice Semond, Virginie Brandli, Bertrand Grimbert, Achraf Ben Amar, Matthieu Werquin, Christophe Boyaval, Christophe Gaquière, Didier Theron, Lionel Buchaillot

The properties of a new class of electromechanical resonators based on GaN are presented. By using the two-dimensional electron gas (2-DEG) present at the AlGaN/GaN interface and the piezoelectric properties of this heterostructure, we use the R-HEMT (Resonant High Electron Mobility Transistor) as…

24th International Conference on Micro Electro Mechanical Systems, MEMS 2011, Jan 2011, Cancun, Mexico. pp.581-584, ⟨10.1109/MEMSYS.2011.5734491⟩. ⟨hal-00579046⟩

• Communication dans un congrès

Fabrication et caractérisation de MOSFET In0.53Ga0.47As de type N en technologie auto-aligné et de longueur de grille de 300nm

J. Mo, A. Olivier, Nicolas Wichmann, Yannick Roelens, L. Desplanque, X. Wallart, Francois Danneville, Gilles Dambrine, F. Martin, O. Desplats, S. Bollaert

17èmes Journées Nationales Micro-ondes, JNM 2011, 2011, France. papier 122, 2C3, 1-4. ⟨hal-00597145⟩

• Communication dans un congrès

Systèmes radiofréquences avancés pour communication inter-puces multi-gigabits à 60GHz

S. Foulon, Christophe Loyez, S. Pruvost, N. Rolland

17èmes Journées Nationales Micro-ondes, JNM 2011, 2011, France. papier 274, 2E8, 1-3. ⟨hal-00597147⟩

• Article dans une revue

Above 600 mS/mm transconductance with 2.3 A/mm drain current density AlN/GaN high electron mobility transistors grown on silicon

F Medjdoub, Malek Zegaoui, Nicolas Waldhoff, B. Grimbert, N. Rolland, Paul-Alain Rolland

AlN/GaN high-electron-mobility transistors (HEMTs) capped with an in-situ grown SiN have been successfully developed on 100mm Si substrates. A unique combination of maximum output current density exceeding 2A/mm and a record extrinsic transconductance above 600 mS/mm has been reached, which is well…

Japanese Journal of Applied Physics, part 2 : Letters, 2011, 4 (6), pp.064106-1-3. ⟨10.1143/APEX.4.064106⟩. ⟨hal-00603010⟩

• Article dans une revue

Subterahertz hypersound attenuation in silica glass studied via picosecond acoustics

Simon Ayrinhac, Marie Foret, Arnaud Devos, Benoit Ruffle, Eric Courtens, René Vacher

We report picosecond acoustic measurements in silica-glass films grown by wet thermal oxidation on a (111) silicon substrate. The longitudinal acoustic phonons are observed over the range from 150 to 300 GHz using an infrared pump and a second harmonic blue probe. The transducer is an aluminum thin…

Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2011, 83 (1), pp.014204. ⟨10.1103/PhysRevB.83.014204⟩. ⟨hal-00567412⟩