Publications

• ART

Dielectric dispersion of BaSrTiO3 thin film from centimeter to submillimeter wavelengths

Grégory Houzet, Karine Blary, Sylvie Lepilliet, Didier Lippens, Ludovic Burgnies, Gabriel Vélu, Jean-Claude Carru, Edwin Nguema Agnandji, Patrick Mounaix

The dielectric dispersion of ferroelectric BaxSr1-xTiO3 (BST) thin film in a paraelectric phase was characterized from centimeter to submillimeter wavelengths. To this aim, interdigitated capacitors were patterned on a micrometer scale onto a BST layer with a barium concentration of 0.5 and were…

Journal of Applied Physics, 2011, 109 (1), pp.014116. ⟨10.1063/1.3531534⟩. ⟨hal-00572636⟩

• ART

Field-induced vortices in weakly anisotropic ferroelectrics

Anaïs Sené, Laurent Baudry, Igor A. Luk'Yanchuk, Laurent Delahoche, Y. El Amraoui

Superlattices and Microstructures, 2011, 49, pp.314-317. ⟨10.1016/j.spmi.2010.05.001⟩. ⟨hal-00574497⟩

• COMM

Nucleation of vortices structures in ferroelectrics

L. Baudry, A. Sene, Igor A. Luk'Yanchuk, L. Lahoche

Multifunctional Nanomaterials : Mediterranean - East Europe Meeting, NanoEuroMed 2011, 2011, Uzhgorod, Ukraine. ⟨hal-00807623⟩

• ART

Highly coherent terahertz wave generation with a dual-frequency Brillouin fiber laser and a 1.55 μm photomixer

Guillaume Ducournau, P. Szriftgiser, Tahsin Akalin, Alexandre Beck, Denis Bacquet, Emilien Peytavit, Jean-Francois Lampin

Thanks to a portable dual-frequency Brillouin fiber laser and a 1.55 μm photomixer, we report the generation of a highly coherent kilohertz level submillimeter wave emission. Low-cost telecommunications components are used to achieve very simple source architecture. The photomixer is composed of a…

Optics Letters, 2011, 36, pp.2044-2046. ⟨10.1364/OL.36.002044⟩. ⟨hal-00597082⟩

• ART

Simultaneous fabrication of superhydrophobic and superhydrophilic polyimide surfaces with low hysteresis

G. Scheen, K. Ziouche, Z. Bougrioua, P. Godts, D. Leclercq, T. Lasri

Langmuir, 2011, 27, pp.6490-6495. ⟨10.1021/la1050805⟩. ⟨hal-00597097⟩

• COMM

Visualisation de l'écoulement autour d'une aile d'insecte artificielle

Thomas Vanneste, Jean-Paul Bourez, Jean-Bernard Paquet, Sébastien Grondel, Eric Cattan

Le projet d'insecte artificiel IN-ART vise à la réalisation d'un nano-drone à ailes vibrantes de la taille d'un insecte en s'appuyant sur le biomimétisme pour reproduire ses battements d'ailes. Les prototypes, réalisés à l'aide des techniques de fabrication…

14ème Congrès Français de Visualisation et de Traitement d'Images en Mécanique des Fluides, FLUVISU 14, 2011, Lille, France. pp.1-9. ⟨hal-05028409⟩

• COMM

Tuning the Kohn anomaly in the phonon dispersion of graphene by interaction with the substrate and by doping

L. Wirtz, A. Allard, Claudio Attaccalite, M. Lazzeri, Francesco Mauri, A. Rubio

American Physical Society March Meeting, APS March Meeting 2011, 2011, Dallas, TX, United States. ⟨hal-00579043⟩

• ART

Variations in the work function of doped single- and few-layer graphene assessed by Kelvin probe force microscopy and density functional theory

D. Ziegler, P. Gava, J. Güttinger, F. Molitor, L. Wirtz, M. Lazzeri, A.M. Saitta, A. Stemmer, Francesco Mauri, C. Stampfer

Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2011, 83, pp.235434-1-7. ⟨10.1103/PhysRevB.83.235434⟩. ⟨hal-00639882⟩

• ART

Spin-dependent photoelectron tunneling from GaAs into magnetic cobalt

D. Vu, H. Jurca, F. Maroun, P. Allongue, N. Tournerie, A. Rowe, D. Paget, S. Arscott, Emilien Peytavit

The spin dependence of the photoelectron tunnel current from free standing GaAs films into outof-plane magnetized Cobalt films is demonstrated. The measured spin asymmetry (A) resulting from a change in light helicity, reaches ±6% around zero applied tunnel bias and drops to ±2% at a bias of -1.6 V…

Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2011, 83 (12), pp.121304(R). ⟨10.1103/PhysRevB.83.121304⟩. ⟨hal-02345792⟩

• ART

Low-noise microwave performance of AlN/GaN HEMTs grown on silicon substrate

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

Microwave noise performance of state-of-the-art AlN/GaN high-electron-mobility transistors (HEMTs) grown on 100-mm Si substrate has been investigated. DC and RF measurements show the outstanding potential of this structure for high-power millimeter-wave (mmW) applications. A maximum output current…

IEEE Electron Device Letters, 2011, 32 (9), pp.1230-1232. ⟨10.1109/LED.2011.2161261⟩. ⟨hal-00639806⟩