Publications

• Communication dans un congrès

Impact of Measurement Methods over the Characterization of Transient Electromagnetic (EM) Signals above 2 GHz in a Railway Environment

Grecia Romero, Virginie Deniau, Eric Pierre Simon

In order to offer on-board Internet access on trains a Wi-Fi and LTE connection are required. These communicationsystems have to take into account electromagnetic (EM) interferences present in the railway environment in the 2 GHz frequency band since this is a frequency band in which LTE and Wi-Fi…

URSI AP-RASC 2019, Asia Pacific Radio Science Conference, Mar 2019, New Delhi, India. 4p. ⟨hal-02315713⟩

• Communication dans un congrès

Étude par C-AFM de substrats magnétiques fonctionnalisés par des SAMs photo-commutables

Louis Thomas, David Guérin, D. Deresmes, Jean-Louis Codron, Xavier Wallart, Thierry Melin, Dominique Vuillaume, Stéphane Lenfant

SPIC 2019: Troisième congrès national Sciences et Technologies des systèmes pi-conjugués, Oct 2019, Arras, France. ⟨hal-02776445⟩

• Article dans une revue

Polarization-dependent and Valley-protected Lamb Waves in Asymmetric Pillared Phononic Crystals

Wei Wang, Bernard Bonello, Bahram Djafari-Rouhani, Yan Pennec

We present the realization of the topological valley-protected zero-order antisymmetric (A 0) or symmetric (S 0) and zero-order shear-horizontal (SH 0) Lamb waves at different domain walls based on topologically distinct asymmetric double-sided pillared phononic crystals. The elastic periodic…

Journal of Physics D: Applied Physics, 2019, 52 (50), pp.505302. ⟨10.1088/1361-6463/ab43f9⟩. ⟨hal-02302115⟩

• Article dans une revue

Massless Dirac fermions in III-V semiconductor quantum wells

Sergey S. Krishtopenko, W. Desrat, K. Spirin, C. Consejo, S. Ruffenach, F. Gonzalez-Posada, Benoit Jouault, W. Knap, K. Maremyanin, V. Gavrilenko, G. Boissier, J. Torres, M. Zaknoune, E. Tournié, F. Teppe

We report on the clear evidence of massless Dirac fermions in two-dimensional system based on III-V semiconductors. Using a gated Hall bar made on a three-layer InAs/GaSb/InAs quantum well, we restore the Landau level fan chart by magnetotransport and unequivocally demonstrate a gapless state in…

Physical Review B, 2019, 99 (12), pp.121405. ⟨10.1103/PhysRevB.99.121405⟩. ⟨hal-02072785⟩

• Article dans une revue

Medical video coding based on 2nd-generation wavelets: performance evaluation

Merzak Ferroukhi, Abdeldjalil Ouahabi, Mokhtar Attari, Yassine Habchi, Abdelmalik Taleb-Ahmed

The operations of digitization, transmission and storage of medical data, particularly images, require increasingly effective encoding methods not only in terms of compression ratio and flow of information but also in terms of visual quality. At first, there was DCT (discrete cosine transform) then…

Electronics, 2019, 8 (1), pp.88. ⟨10.3390/electronics8010088⟩. ⟨hal-03153239⟩

• Article dans une revue

Design of a four-branch optical power splitter based on gallium-nitride using rectangular waveguide coupling for telecommunication links

Retno Wigajatri Purnamaningsih, Nji Raden Poespawati, El Hadj Dogheche

This paper reports design of a simple four-branch optical power splitter using five parallel rectangular waveguides coupling in a gallium-nitride (GaN) semiconductor/sapphire for telecommunication links. The optimisation was conducted using the 3D FD-BPM method for long wavelength optical…

Journal of Engineering, 2019, 2019, pp.7285305. ⟨10.1155/2019/7285305⟩. ⟨hal-03138563⟩

• Communication dans un congrès

Hardware-in-the-loop and Software-in-the-loop platform for test and validation of adaptable radio communications systems for railways at IP layer

Juan Moreno, Maha Bouaziz, Marion Berbineau, Ying Yan, José Soler, Raul Torrego, Val Inaki, Alessandro Vizzarri, Laurent Clavier, Rédha Kassi, Yann Cocheril, Virginie Deniau, Christophe Gransart

this paper presents a description of a new emulation platform to help decrease expenses for the development of a new train-to-ground communication system for railways, which is one of the objectives of the Shift2Rail Joint Un- dertaking. This emulator will interface with the T2G communication…

Net4Rails, May 2019, Colmar, France. 9p. ⟨hal-02531051⟩

• Article dans une revue

The Influence of Microstructure on the Passive Layer Chemistry and Corrosion Resistance for Some Titanium-Based Alloys

Nader El-Bagoury, Sameh Ahmed, Ola Ahmed Abu Ali, Shimaa El-Hadad, Ahmed Fallatah, G. Mersal, Mohamed Ibrahim, Joanna Wysocka, Jacek Ryl, Rabah Boukherroub, Mohammed A. Amin

The effect of microstructure and chemistry on the kinetics of passive layer growth and passivity breakdown of some Ti-based alloys, namely Ti-6Al-4V, Ti-6Al-7Nb and TC21 alloys, was studied. The rate of pitting corrosion was evaluated using cyclic polarization measurements. Chronoamperometry was…

Materials, 2019, 12 (8), pp.1233. ⟨10.3390/ma12081233⟩. ⟨hal-02373220⟩

• Communication dans un congrès

Resonant Devices for Stealth and Discretion In Underwater Acoustics

Anne-Christine Hladky, Charles Croënne, Bertrand Dubus

5th International Conference on Phononic Crystals/Metamaterials, Phonon Transport, and Topological Phononics, PHONONICS 2019, Jun 2019, Tucson, United States. ⟨hal-04543964⟩

• Article dans une revue

Buffer breakdown in GaN-on-Si HEMTs: A comprehensive study based on a sequential growth experiment

Matteo Borga, Matteo Meneghini, Davide Benazzi, Eleonora Canato, Roland Püsche, Joff Derluyn, Idriss Abid, F Medjdoub, Gaudenzio Meneghesso, Enrico Zanoni

The aim of this work is to investigate the breakdown mechanisms of the layers constituting the vertical buffer of GaN-on-Si HEMTs; in addition, for the first time we demonstrate that the breakdown field of the AlN nucleation layer grown on a silicon substrate is equal to 3.2 MV/cm and evaluate its…

Microelectronics Reliability, 2019, 100-101, pp.113461. ⟨10.1016/j.microrel.2019.113461⟩. ⟨hal-02356751⟩