Publications

• 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⟩

• Article dans une revue

Electrical characterization of traps in AlGaN/GaN FAT-HEMT's on silicon substrate by C-V and DLTS measurements

M. Charfeddine, M. Gassoumi, H. Mosbahi, Christophe Gaquière, M.A. Zaidi, H. Maaref

Journal of Modern Physics, 2011, 2, pp.1229-1234. ⟨10.4236/jmp.2011.210152⟩. ⟨hal-00783410⟩

• Article dans une revue

Germanium adsorption and initial growth on SrTiO3 (001) surface : a first principles investigation

J.J. Wang, I. Lefebvre

Journal of Physical Chemistry C, 2011, 115, pp.22893-22900. ⟨10.1021/jp205074w⟩. ⟨hal-00783408⟩

• 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⟩

• Communication dans un congrès

Classification de poudres laitières selon leur pouvoir de solvatation estimé par méthode acoustique

Bruno Richard, Malika Toubal, Jean-François Le Page, Georges Nassar, Edouard Radziszewski, Bertrand Nongaillard, Pascal Debreyne, Romain Jeantet, Pierre Schuck, Guillaume Delaplace

L'objectif de ce travail est de valider l’aptitude d’un test non invasif ultrasonore à caractériser la réhydratation (cinétique, mécanisme) de poudres de protéines laitières. Le test consiste à générer une onde ultrasonore et à observer sa transmission à travers la suspension solide/liquide…

XIIIe Congrès de la Société Française du Génie des Procédés, SFGP 2011, Nov 2011, Lille, France. ⟨hal-00807669⟩

• Article dans une revue

Anisotropic excitonic effects in the energy loss function of hexagonal boron nitride

S. Galambosi, L. Wirtz, J.A. Soininen, J. Serrano, A. Marini, K. Watanabe, T. Taniguchi, S. Huotari, A. Rubio, K. Hamalainen

The anisotropy of the valence energy-loss function of hexagonal boron nitride (hBN) is shown to be largely enhanced by the highly inhomogeneous character of the excitonic states. The energy loss with momentum transfer parallel to the BN layers is dominated by strongly bound, quasi-two-dimensional…

Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2011, 83 (8), pp.081413. ⟨10.1103/PhysRevB.83.081413⟩. ⟨hal-00579067⟩

• Communication dans un congrès

Cristaux phononiques à résonances locales

Yan Pennec, H. Larabi, Bahram Djafari-Rouhani, Abdellatif Akjouj, Gaëtan Lévêque

Colloque National Métamatériaux, CNM 2011, 2011, Orsay, France. ⟨hal-00807582⟩

• Communication dans un congrès

Band-gap operating in the gigahertz frequencies for a bi-layer phononic crystal slab

Abdelkrim Talbi, A. Soltani, Y. El Hassouani, Yan Pennec, Bahram Djafari-Rouhani, Abdellatif Akjouj

1st International Conference on Phononic Crystals, Metamaterials and Optomechanics, PHONONICS 2011, 2011, Santa Fe, NM, United States. ⟨hal-00807176⟩

• Article dans une revue

Band gap engineering in simultaneous phononic and photonic crystal slabs

Bahram Djafari-Rouhani, Yan Pennec, El Houssaine El Boudouti, Jerome O. Vasseur, Youssef El Hassouani, C. Li, Abdellatif Akjouj, Driss Bria

We discuss the simultaneous existence of phononic and photonic band gaps in two types of phononic crystals slabs, namely periodic arrays of nanoholes in a Si membrane and of Si nanodots on a SiO2 membrane. In the former geometry, we investigate in detail both the boron nitride lattice and the…

Applied physics. A, Materials science & processing, 2011, 103, pp.735-739. ⟨10.1007/s00339-010-6207-x⟩. ⟨hal-00603012⟩

• Article dans une revue

Mechanical characterization of aluminium nanofilms

Gregory Guisbiers, Etienne Herth, L. Buchaillot

The mechanical properties (Young’s modulus, hardness, wear resistance) of aluminium nanofilms on silicon substrate are studied. Size effect on these mechanical properties are exhibited. Young’s modulus, hardness and wear resistance increases when the thickness is reduced. Experimental…

Microelectronic Engineering, 2011, 88 (5), pp.844-847. ⟨10.1016/j.mee.2010.06.028⟩. ⟨hal-00579052⟩