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Affichage de 5301 à 5310 sur 16232

Communication dans un congrès

A fully flexible circuit implementation of clique-based neural networks in 65-nm CMOS

Benoit Larras, Paul Chollet, Cyril Lahuec, Fabrice Seguin, Matthieu Arzel

Clique-based neural networks implement low- complexity functions working with a reduced connectivity be- tween neurons. Thus, they address very specific applications operating with a very low energy budget. This paper proposes a flexible and iterative neural architecture able to implement multiple...

ISCAS 2018 : IEEE International Symposium on Circuits and Systems (ISCAS), May 2018, Firenze, Italy. ⟨10.1109/ISCAS.2018.8350954⟩. ⟨hal-01849349⟩

Article dans une revue

Suppression of contact noise in a study on 1/ f noise as a function of film thickness in Al-doped ZnO

Abicha Achahour, Gérard Leroy, L.K.J. Vandamme, Boubakeur Ayachi, Benoît Duponchel, Nicolas Waldhoff, Karine Blary, Jean-Pierre Vilcot

Aluminum doped-zinc oxide (AZO) thin films were prepared on glass substrate by radio-frequency (RF) sputtering at room temperature. The sheet resistance, Rsh [Ω] the resistivity, ρ [Ω·cm] and the 1/f noise were studied as a function of thickness, t from 50 nm to 450 nm. The eddy current...

Thin Solid Films, 2018, 645, pp.70-76. ⟨10.1016/j.tsf.2017.10.035⟩. ⟨hal-02409513⟩

Communication dans un congrès

Wireless Sensor Network used to improve the energy efficiency in connected railway vehicles

Ulrich Biaou, Michael Bocquet, Atika Rivenq, Sara Iben Jellal, S. Baranowski

This paper presents a solution using Zigbee network for improving energy efficiency inside railway vehicles, especially for suburban train and metro. We present firstly a comparison between existing wireless technologies and the choice for our platform. The simulation tools simuEM3D has been used...

30th International Conference on Microelectronics, ICM 2018, Dec 2018, Sousse, Tunisia. pp.72-75, ⟨10.1109/ICM.2018.8704086⟩. ⟨hal-03528695⟩

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⟩