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

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

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⟩

• Communication dans un congrès

Inkjet printed flexible transmission lines for high frequency applications up to 67 GHz

Mohamed Moez Belhaj, Wei Wei, Emiliano Pallecchi, Colin Mismer, Isabelle Roch-Jeune, Henri Happy

This letter introduces radio frequency(RF) characterization of ink-jet printed coplanar waveguides (CPW) with and without strain. Kapton is selected as flexible substrate with different sintering temperature. With optimized inkjet printing parameters, well defined patterns with high resolution…

44th European Microwave Conference and 9th European Microwave Integrated Circuits Conference, EuMC/EuMIC 2014, Oct 2014, Rome, Italy. pp.1528-1531, ⟨10.1109/EuMC.2014.6986740⟩. ⟨hal-03335828⟩

• Article dans une revue

Electrical method for crosstalk cancellation in transducer arrays

Abdelmajid Bybi, Christian Granger, Sébastien Grondel, Anne-Christine Hladky, Jamal Assaad

In this paper, we report a new and simple electrical method to cancel crosstalk in the acoustical arrays. This solution has several advantages compared with that proposed in a previous paper (Bybi et al 2013) [17] where adapted electrical voltages were applied to each neighboring element of the…

NDT & E International, 2014, 62, pp.115-121. ⟨10.1016/j.ndteint.2013.12.003⟩. ⟨hal-00934426⟩

• Communication dans un congrès

Microscopie champ proche micro-ondes pour la caractérisation de liquides

Sijia Gu, Kamel Haddadi, Tuami Lasri

Une plate-forme de microscopie champ proche micro-ondes pour la caractérisation de liquides est proposée. La technique est basée sur l'association d'un analyseur de réseau micro-ondes et d'une sonde coaxiale évanescente. Le principe du système proposé est basé sur le développement d…

17èmes Journées Nationales du Réseau Doctoral en Micro-Nanoélectronique, JNRDM 2014, 2014, Villeneuve d'Ascq, France. 4 p. ⟨hal-01020399⟩