Publications

• Article dans une revue

Trapped-mode-induced Fano resonance and acoustical transparency in a one-dimensional solid-fluid phononic crystal

Ilyasse Quotane, El Houssaine El Boudouti, Bahram Djafari-Rouhani

We investigate theoretically and numerically the possibility of existence of Fano and acoustic-induced transparency (AIT) resonances in a simple though realistic one-dimensional acoustic structuremade of solid-fluid layers inserted between two fluids. These resonances are obtained by combining…

Physical Review B, 2018, 97 (2), ⟨10.1103/PhysRevB.97.024304⟩. ⟨hal-03183494⟩

• Article dans une revue

Compact Waveguide and Guided Beam Pattern Based on the Whispering-Gallery Mode of a Hollow Pillar in a Phononic Crystal Plate

Weitao Yuan, Jinfeng Zhao, Bernard Bonello, Bahram Djafari-Rouhani, Xiaoqing Zhang, Yongdong Pan, Zheng Zhong

We report on the experimental evidence of the guiding of the lowest order antisymmetric Lamb mode (A0) through a compact waveguide consisting of aligned hollow pillars in between a square-latticed array of solid pillars on a thin slab. We analyze both numerically and experimentally the guiding…

Physical Review Applied, 2018, 10 (3), pp.034010. ⟨10.1103/PhysRevApplied.10.034010⟩. ⟨hal-01905839⟩

• Article dans une revue

Addressing the exciton fine structure in colloidal nanocrystals: the case of CdSe nanoplatelets

Elena V Shornikova, Louis Biadala, Dmitri R Yakovlev, Victor F Sapega, Yuri G Kusrayev, Anatolie Mitioglu, Mariana V Ballottin, Peter C M Christianen, Vasilii V Belykh, Mikhail V Kochiev, Nikolai N Sibeldin, Aleksandr A Golovatenko, Anna V Rodina, Nikolay A Gippius, Alexis Kuntzmann, Ye Jiang, Michel Nasilowski, Benoit Dubertret, Manfred Bayer

We study the band-edge exciton fine structure and in particular its bright-dark splitting in colloidal semiconductor nanocrystals by four different optical methods based on fluorescence line narrowing and time-resolved measurements at various temperatures down to 2 K. We demonstrate that all these…

Nanoscale, 2018, 10 (2), pp.646-656. ⟨10.1039/C7NR07206F⟩. ⟨hal-02394900⟩

• Article dans une revue

Digital complex delta-sigma modulators with highly configurable notches for multi-standard coexistence in wireless transmitters

Razvan-Cristian Marin, Antoine Frappé, Andreas Kaiser

This paper presents a complex delta-sigma modu-lator (CDSM) designed for integration in a digital transmitter chain targeting multi-standard coexistence with nearby receivers. The use of a DSM has the advantage of increased performance in terms of signal-to-noise-ratio in the band of interest.…

IEEE Transactions on Circuits and Systems I: Regular Papers, 2018, 65 (1), pp.343-352. ⟨10.1109/TCSI.2017.2711035⟩. ⟨hal-02314482⟩

• Communication dans un congrès

Test de susceptibilité de communication LTE face aux interférences produites par le contact caténaire-pantographe

Olivier Stienne, Virginie Deniau, Eric Pierre Simon, Mohamed Raouf Kousri

Les transports ferroviaires doivent continuellement évoluer pour conserver une bonne attractivité. En particulier, les services offerts à bord des trains doivent apporter un bon niveau de confort aux passagers. Dans ce contexte, les opérateurs veulent permettre un accès à internet de qualité à bord…

CEM 2018, 19ème Colloque International et Exposition sur la Compatibilité ÉlectroMagnétique, Jul 2018, Paris, France. 6p. ⟨hal-02315743⟩

• Article dans une revue

Voltage controlled sub-THz detection with gated planar asymmetric nanochannels

H. Sanchez-Martin, J. Mateos, J. A. Novoa, J. A. Delgado-Notario, Y. M. Meziani, S. Perez, H. Theveneau, Guillaume Ducournau, Christophe Gaquière, T. Gonzalez, I. Iniguez-De-La-Torre

This letter reports on room temperature sub-THz detection using self-switching diodes based on an AlGaN/GaN heterostructure on a Si substrate. By means of free-space measurements at 300 GHz, we demonstrate that the responsivity and noise equivalent power (NEP) of sub-THz detectors based on planar…

Applied Physics Letters, 2018, 113 (4), ⟨10.1063/1.5041507⟩. ⟨hal-03183499⟩

• Article dans une revue

Ferroelastic relaxation at 20 GHz evidenced by large frequency range picosecond acoustics

Arnaud Devos, F. Casset, G. Le Rhun, P. Emery, S. Fanget, E. Defay

We present a method to perform elastic measurements on a thin-film as a function of frequency between a few GHz and a few hundred GHz. The technique is mainly based on Picosecond Acoustics (PA), which is an ultrafast optical technique that realizes pulse-echo measurements in the hypersonic range.…

Applied Physics Letters, 2018, 112 (26), ⟨10.1063/1.5035479⟩. ⟨hal-03183473⟩

• Article dans une revue

Influence of capillarity and gravity on confined Faraday waves

S. Diwakar, Vibhor Jajoo, Sakir Amiroudine, Satoshi Matsumoto, Ranga Narayanan, Farzam Zoueshtiagh

Experiments characterizing the influence of gravity and interfacial tension on Faraday instability in immiscible, confined fluid layers are presented. The variation in interfacial tension was obtained by controlling the temperature of a suitable binary fluid pair while the influence of gravity was…

Physical Review Fluids, 2018, 3 (7), ⟨10.1103/PhysRevFluids.3.073902⟩. ⟨hal-03185122⟩

• Article dans une revue

Pressure-driven dynamics of liquid plugs in rectangular microchannels: influence of the transition between quasi-static and dynamic film deposition regimes

Stéphanie Signe Mamba, Farzam Zoueshtiagh, Michael Baudoin

In this paper, we study experimentally and theoretically the dynamics of liquid plugs in rectangular microchannels for both unidirectional and cyclic pressure forcing. In both cases, it is shown that the transition between quasi-static and dynamic film deposition behind the liquid plug leads to a…

International Journal of Multiphase Flow, 2018, ⟨10.1016/j.ijmultiphaseflow.2018.10.019⟩. ⟨hal-01700295v2⟩

• Article dans une revue

Monte Carlo studies of thermalization of electron–hole pairs in spin-polarized degenerate electron gas in monolayer graphene

Piotr Borowik, Jean-Luc Thobel, Leszek Adamowicz

Applied physics. A, Materials science & processing, 2018, 124 (2), ⟨10.1007/s00339-018-1611-8⟩. ⟨hal-02341209⟩