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Affichage de 5361 à 5370 sur 16261

  • Communication dans un congrès

Magnonic analogue of electromagnetic induced transparency in detuned magnetic circuit

Abdelkader Mouadili, El Houssaine El Boudouti, Housni Al-Wahsh, Abdellatif Akjouj, Bahram Djafari-Rouhani, L. Dobrzynski

A simple magnetic device consisting of two dangling side stubs grafted at the same site along a waveguide is designed to obtain a magnonic analogue of electromagnetic induced transparency (EIT) resonance. By detuning the lengths of the two stubs, a resonance can be squeezed between two transmission…

3rd International Conference on Electrical and Information Technologies, ICEIT 2017, Nov 2017, Rabat, Morocco. pp.1-5, ⟨10.1109/EITech.2017.8255227⟩. ⟨hal-03508198⟩

  • 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

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⟩

  • 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

Surface acoustic waves in one-dimensional piezoelectric-metallic phononic crystal: Effect of a cap layer

M. Alami, E. H. El Boudouti, Bahram Djafari-Rouhani, Y. El Hassouani, Abdelkrim Talbi

We study the propagation of transverse acoustic waves associated with the surface of a semi-infinite superlattice (SL) composed of piezoelectric-metallic layers and capped with a piezoelectric layer. We present closed-form expressions for localized surface waves, the so-called Bleustein-Gulyaev (BG…

Ultrasonics, 2018, 90, pp.80-97. ⟨10.1016/j.ultras.2018.06.010⟩. ⟨hal-03183475⟩

  • Article dans une revue

Thin-film adhesion characterization by Colored Picosecond Acoustics

Arnaud Devos, P. Emery

This paper presents some applications of a recent technique so-called the Colored Picosecond Acoustics (APiC) to the characterization of complex stacks of thin films. The technique is a unique combination of optics and acoustics that implements an acoustic pulse-echo technique at the nanoscale…

Surface and Coatings Technology, 2018, 352, pp.406-410. ⟨10.1016/j.surfcoat.2018.07.097⟩. ⟨hal-03183488⟩

  • Chapitre d'ouvrage

Chapter 4 - One-dimensional phononic crystals

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

In this chapter we study the band gap structures as well as the effect of inhomogeneities within the perfect one-dimensional (1D) phononic crystal (PnC) such as a free surface, a PnC/substrate interface, and a defect layer embedded in these systems. Such inhomogeneities are usually present in…

Phononics: interface transmission tutorial book series, Elsevier, pp.139-270, 2018, ISBN 978-0-12-809948-3 ; e-ISBN 978-0-12-809931-5. ⟨10.1016/B978-0-12-809948-3.00004-1⟩. ⟨hal-03356297⟩

  • Communication dans un congrès

Characterization and Electrical Modeling Including Trapping Effects of AIN/GaN HEMT 4×50μm on Silicon Substrate

Mohamed Bouslama, Ahmad Al Hajjar, Raphaël Sommet, Jean-Christophe Nallatamby, F Medjdoub

This paper reports the full characterization and modeling of novel AlN/GaN HEMTs on silicon using a short gate length. This device has been optimized for high frequency analog circuits applications. The presented model includes DC and small-signal modeling steps taking into account the trapping…

13th European Microwave Integrated Circuits Conference (EuMIC 2018), Sep 2018, Madrid, Spain. pp.333-336, ⟨10.23919/EuMIC.2018.8539941⟩. ⟨hal-02356757⟩

  • Communication dans un congrès

A bidirectional short range low power and high data rate W-Band transceiver for network on chip

Dipal Ghosh, Antoine Frappé, Christophe Loyez, Andreia Cathelin

A low power wireless transceiver architecture is proposed along with full system integration for network on chip communication, operating in millimeter wave W Band (100 GHz) frequency. The transceiver is designed in 28 inn FDSOI CMOS technology for a data rate of nearly 20 Gbps, with an energy…

16th IEEE International New Circuits and Systems Conference (NEWCAS), Jun 2018, Montreal, Canada. pp.87-90, ⟨10.1109/NEWCAS.2018.8585459⟩. ⟨hal-03270085⟩

  • Article dans une revue

Structural determination of bilayer graphene on SiC(0001) using synchrotron radiation photoelectron diffraction

I. Razado-Colambo, J. Avila, D. Vignaud, S. Godey, X. Wallart, D P Woodruff, M.C. Asensio

In recent years there has been growing interest in the electronic properties of ‘few layer’ graphene films. Twisted layers, different stacking and register with the substrate result in remarkable unconventional couplings. These distinctive electronic behaviours have been attributed to structural…

Scientific Reports, 2018, 8 (1), pp.10190. ⟨10.1038/s41598-018-28402-0⟩. ⟨hal-04438362⟩