Publications

• Communication dans un congrès

Flat THz launcher antenna

Unai Beaskoetxea, Miguel Beruete, Mokhtar Zehar, Amit Agrawal, Shuchang Liu, Karine Blary, Abdallah Chahadih, Xiang-Lei Han, David Etayo, Miguel Navarro-Cia, Ajay Nahata, Tahsin Akalin, Mario Sorolla

1D and 2D leaky-wave corrugated antennas working at terahertz frequencies are numerically and experimentally studied. These structures allow temporal-pulse and beam shaping by engineering the leakage rate of the surface waves induced by the corrugations

Conference on Lasers and Electro-Optics, CLEO 2014, Laser Science to Photonic Applications, 2014, San Jose, CA, United States. ⟨hal-00975796⟩

• Communication dans un congrès

On the correlation between kink effect and effective mobility in InAlN/GaN HEMTs

Philippe Altuntas, N. Defrance, Marie Lesecq, Alain Agboton, Rezki Ouhachi, Etienne Okada, Christophe Gaquière, Jean-Claude de Jaeger, Éric Frayssinet, Yvon Cordier

This paper reports on the kink effect observed in InAlN/GaN high electron mobility transistors. Electrical characterizations were carried out to point out the influence of this phenomenon on transistor behaviour. It is demonstrated that the kink effect is directly correlated to shallow traps…

9th European Microwave Integrated Circuit Conference (EuMIC), Oct 2014, Rome, Italy. pp.88-91, ⟨10.1109/EuMIC.2014.6997798⟩. ⟨hal-03276914⟩

• Article dans une revue

Experimental determination of temperature-dependent electron-electron collision frequency in isochorically heated warm dense gold

C. Fourment, F. Deneuville, D. Descamps, F. Dorchies, S. Petit, O. Peyrusse, B. Holst, V. Recoules

Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2014, 89 (16), ⟨10.1103/PhysRevB.89.161110⟩. ⟨hal-01561840⟩

• Communication dans un congrès

Theory and simulation of optomechanical effects in phoxonic crystals

Said El-Jallal, Mourad Oudich, Yan Pennec, Abdelkader Makhoute, Jordi Gomis-Bresco, Daniel Navarro-Urrios, Clivia M. Sotomayor Torres, Alejandro Martínez, Bahram Djafari-Rouhani

Phoxonic crystals are periodic structures that can exhibit dual phononic and photonic band gaps, thus allowing the simultaneous confinement of both acoustic and optical waves inside the same defect such as a cavity or a waveguide. Then, one can expect an enhancement of the phonon-photon interaction…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium D - Phonons and fluctuations in low dimensional structures, 2014, Lille, France. ⟨hal-00964102⟩

• Article dans une revue

Epitaxial hexagonal boron nitride on Ir(111) : a work function template

Fabian Schulz, Robert Drost, Sampsa K. Hämäläinen, Thomas Demonchaux, Ari P. Seitsonen, Peter Liljeroth

Hexagonal boron nitride (h-BN) is a prominent member in the growing family of two-dimensional materials with potential applications ranging from being an atomically smooth support for other two-dimensional materials to templating growth of molecular layers. We have studied the structure of…

Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2014, 89 (23), pp.2354293. ⟨10.1103/PhysRevB.89.235429⟩. ⟨hal-01044795⟩

• Communication dans un congrès

Tailoring thermal conductivity of graphene via defect-and-molecular engineering

Stefan Bringuier, J.F. Robillard, Pierre Deymier, Krishna Muralidharan

The exceptional thermal properties of graphene have attracted enormous interest over the past decade. Consequently, there is an increased push towards utilizing graphene in thermal-management systems such as thermal interface materials and thermoelectrics. While, many recent investigations have…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium D - Phonons and fluctuations in low dimensional structures, 2014, Lille, France. ⟨hal-00964528⟩

• Article dans une revue

Ferroelectric thin films working at microwave frequency for reconfigurable devices on silicon substrate: performances comparison between BST, PST

Freddy Ponchel, Denis Remiens, Areski Ghalem, Tuami Lasri

The dielectric microwave performance of BST and PST films is studied via tunability. The films are deposited onto silicon wafer with high resistivity using radio frequency magnetron sputtering with an in situ process for BST films and ex situ for PST films. In order to improve the crystalline…

International Journal of Materials Engineering Innovation, 2014, 5 (4), pp.327. ⟨10.1504/IJMATEI.2014.066857⟩. ⟨hal-03525889⟩

• Article dans une revue

GaN high electron mobility transistors on silicon substrates with MBE/PVD AlN seed layers

Yvon Cordier, Éric Frayssinet, Magdalena Chmielowska, Maud Nemoz, Aimeric Courville, Philippe Vennéguès, P. de Mierry, Sebastien Chenot, Julien Camus, Keltouma Aït Aïssa, Quentin Simon, Laurent Le Brizoual, Mohamed Abdou Djouadi, N. Defrance, Marie Lesecq, Philippe Altuntas, Adrien Cutivet, Alain Agboton, Jean-Claude de Jaeger

In the present paper, we describe the development of new AlN seed layers obtained by combining molecular beam epitaxy and low temperature physical vapour deposition (magnetron sputtering). It is shown that it is possible to grow thick AlN seed layers with a good in-plane crystal ordering. GaN based…

Physica Status Solidi C: Current Topics in Solid State Physics, 2014, 11 (3-4), pp.498-501. ⟨10.1002/pssc.201300453⟩. ⟨hal-00966112⟩

• Communication dans un congrès

A GaN Schottky diode-based analog phase shifter MMIC

Chong Jin, Etienne Okada, Marc Faucher, Damien Ducatteau, Mohammed Zaknoune, Dimitris Pavlidis

A GaN Schottky Diode-based Analog Phase Shifter MMIC of T-topology has been designed for 35 GHz operation. An all E-Beam technology was employed for MMIC realization. The measured, as well modeled small and large-signal diode characteristics were used for evaluating the phase-shifter performance in…

9th European Microwave Integrated Circuit Conference (EuMIC), Oct 2014, Rome, Italy. pp.96-99, ⟨10.1109/EuMIC.2014.6997800⟩. ⟨hal-03286170⟩

• Communication dans un congrès

Investigations into the dynamical properties of graphene on Ir(111)

Michael Endlich, Henrique Miranda, Alejandro Molina-Sanchez, Ludger Wirtz, Jörg Kröger

European Workshop on Epitaxial Graphene and 2D Materials, EWEG/2D 2014, 2014, Primosten, Croatia. ⟨hal-01009965⟩