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Affichage de 5471 à 5480 sur 16455

Communication dans un congrès

Indoor 100 Gbit/s THz data link in the 300 GHz band using fast photodiodes

Vinay Kumar Chinni, Malek Zegaoui, Christophe Coinon, X. Wallart, Emilien Peytavit, Jean-Francois Lampin, P. Szriftgiser, Mohammed Zaknoune, Guillaume Ducournau

This paper presents recent achievements towards 100 Gbit/s data links for future 300 GHz communication systems with the new IEEE 802.15.3d standard. Resonant photodiodes structures, and their application for QAM-16 data links in the THz range are shown in indoor scenario.

25th International Conference on Telecommunications (ICT), Jun 2018, Saint Malo, France. pp.288-290, ⟨10.1109/ICT.2018.8464945⟩. ⟨hal-03286177⟩

Article dans une revue

Toward a better understanding of the doping mechanism involved in Mo(tfd-COCF3)(3) doped PBDTTT-c

J. Euvrard, A. Revaux, S. S. Nobre, A. Kahn, Dominique Vuillaume

In this study, we aim to improve our understanding of the doping mechanism involved in the polymer poly[(4,8-bis-(2-ethylhexyloxy)-benzo(1,2-b:4,5-b')dithiophene)-2,6-diyl-alt-(4-(2-ethylhexanoyl)-thieno[3,4-b]thiophene-)-2-6-diyl)] (PBDTTT-c) doped with tris[1-(trifluoroethanoyl)-2-(...

Journal of Applied Physics, 2018, 123 (22), pp.22550. ⟨10.1063/1.5029810⟩. ⟨hal-03183498⟩

Chapitre d'ouvrage

Chapter 5 - Transmission in 2D phononic crystals and acoustic metamaterials

Yan Pennec, Bahram Djafari-Rouhani, Abdellatif Akjouj, Gaëtan Lévêque, El Houssaine El Boudouti, Housni Al-Wahsh, L. Dobrzynski

In this chapter we describe the basic concepts of two-dimensional (2D) phononic crystals. We start with a detailed presentation of the elementary methods for the calculation of band structures and transmission phenomena which have proven their efficiency in the literature. We respectively present...

Phononics: interface transmission tutorial book series, Elsevier, pp.271-373, 2018, ISBN 978-0-12-809948-3 ; e-ISBN 978-0-12-809931-5. ⟨10.1016/B978-0-12-809948-3.00005-3⟩. ⟨hal-03356298⟩

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⟩