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Affichage de 4441 à 4450 sur 16170

Article dans une revue

An optical power divider based on mode coupling using GaN/Al2O3 for underwater communication

Retno Wigajatri Purnamaningsih, Nji Raden Poespawati, Tomy Abuzairi, El Hadj Dogheche

This paper details the design of a 1 \texttimes 8 optical power divider, using a gallium nitride (GaN) semiconductor on sapphire, which can be applied to underwater optical wireless communication. The design consists of nine parallel rectangular waveguides which are based on mode coupling phenomena…

Photonics, 2019, 6 (2), pp.63. ⟨10.3390/photonics6020063⟩. ⟨hal-03140501⟩

Communication dans un congrès

Multiple antenna receiver under impulsive SαS noise

Nicolas de Araujo Moreira, Laurent Clavier

In a usual MIMO framework when noise is assumed Gaussian, the channel matrix can be estimated with a Least Square approach. In addition, the Euclidean distance is optimal to detect the transmitted symbol. However, in dynamic interference, the Gaussian assumption is no longer valid. In this case,…

WCNC 2019, 17th IEEE Wireless Communications and Networking Conference, Apr 2019, Marrakech, Morocco. 6 p., ⟨10.1109/WCNC.2019.8885790⟩. ⟨hal-03270115⟩

Communication dans un congrès

Plasmon induced transparency in graphene-based side coupled two rectangular nano-cavities-like structures

A. Noual, M. Amrani, E.H. El Boudouti, Yan Pennec, Bahram Djafari-Rouhani

We investigate numerically the plasmon analogue of electromagnetic induced transparency (EIT) in a compact graphene-based waveguide coupled to two rectangular nano-cavities-like structures made out of graphene nanoribbons. The cavities are placed symmetrically on each side of the bus waveguide,…

2018 International Conference on Materials and Environmental Science, ICMES 2018, Apr 2018, Saidia, Morocco. pp.1076-1083, ⟨10.1016/j.matpr.2019.04.074⟩. ⟨hal-03508191⟩

Communication dans un congrès

Développement de solutions hyperfréquences pour la société moderne: bio-radar et microscopie électromagnétique

Kamel Haddadi, D. Szymik, Virginie Hoel, Gilles Dambrine

Cet article décrit le projet de fin d’étude mis au point au sein du Master Réseaux et Télécommunications parcours SYSCOM (Systèmes Communicants) de l’Université de Lille. Le projet vise à développer des solutions hyperfréquences pour la ville intelligente (Smart City). Les développements techniques…

15èmes Journées Pédagogiques du CNFM, JPCNFM 2018, Nov 2018, Saint-Malo, France. 1013, 9 p., ⟨10.1051/j3ea/20191013⟩. ⟨hal-03340538⟩

Communication dans un congrès

22nm ultra-thin body and buried oxide FDSOI RF noise performance

Ousmane Kane, Luca Lucci, Pascal Scheiblin, Sylvie Lepilliet, Francois Danneville

The drastic downscaling of the transistor size along with advances in material sciences allowed the development of low power CMOS technologies with competitive RF figure of merits suitable for millimeter applications. In this context, this paper presents the RF and noise characterization (up to 110…

IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Jun 2019, Boston, United States. ⟨10.1109/RFIC.2019.8701740⟩. ⟨hal-03272699⟩

Article dans une revue

Tunneling Atomic Layer-Deposited Aluminum Oxide: a Correlated Structural/ Electrical Performance Study for the Surface Passivation of Silicon Junctions

Kangping Liu, Odile Cristini-Robbe, Omar Ibrahim Elmi, Shuang Long Wang, Bin Wei, Ing-Song Yu, Xavier Portier, Fabrice Gourbilleau, Didier Stiévenard, Tao Xu

Passivation is a key process for the optimization of silicon p-n junctions. Among the different technologies used to passivate the surface and contact interfaces, alumina is widely used. One key parameter is the thickness of the passivation layer that is commonly deposited using atomic layer…

Nanoscale Research Letters, 2019, ⟨10.1186/s11671-019-3160-2⟩. ⟨hal-02406192⟩

Communication dans un congrès

FTIR and X-ray micro-tomography on Itokawa particles and carbonaceous chondrites

Rosario Brunetto, Zélia Dionnet, Alice Aléon-Toppani, Donia Baklouti, Ferenc Borondics, Zahia Djouadi, Andrew King, Tomoki Nakamura, Stefano Rubino, Christophe Sandt, David Troadec, Akira Tsuchiyama

We report a combined IR and X micro-tomography analysis of five particles from asteroid Itokawa and a few selected fragments of several carbonaceous chondrites. These techniques are an efficient first-step in a multi-technique analytical sequence to be applied on small Solar System bodies samples,…

EPSC-DPS Joint Meeting, 2019, Geneva, Switzerland. ⟨hal-03090422⟩

Article dans une revue

A Comparative Investigation of Plasmonic Properties between Tunable Nanoobjects and Metallized Nanoprobes for Optical Spectroscopy

Damien Eschimese, Patrick Hsia, Francois Vaurette, D. Deresmes, De Philippe Bettignies, Joachim Schreiber, Marc Chaigneau, S. Arscott, Gaëtan Lévêque, Thierry Melin

In order to evaluate the optical efficiency of tip-based probes for future tip-enhanced optical spectroscopy applications, we developed an experimental setup based on the coupling of an achromatic inverted microscope equipped with a total internal reflection objective and an atomic force microscopy…

Journal of Physical Chemistry C, 2019, 123 (46), pp.28392-28400. ⟨10.1021/acs.jpcc.9b09977⟩. ⟨hal-02349635⟩

Article dans une revue

High performance and highly robust AlN/GaN HEMTs for millimeter-wave operation

Kathia Harrouche, Riad Kabouche, Etienne Okada, F Medjdoub

We report on a 3 nm AlN/GaN HEMT technology for millimeter-wave applications. Electrical characteristics for a 110 nm gate length show a maximum drain current density of 1.2 A/mm, an excellent electron confinement with a low leakage current below 10 μA/mm, a high breakdown voltage and a F T /F max…

IEEE Journal of the Electron Devices Society, 2019, 7, pp.1145-1150. ⟨10.1109/JEDS.2019.2952314⟩. ⟨hal-02357492⟩

Article dans une revue

Conversion between surface acoustic waves and guided modes of a quasi-periodic structured nanobeam

Alexander V Korovin, Yan Pennec, Matteo Stocchi, Davide Mencarelli, Luca Pierantoni, Tapani Makkonen, Jouni Ahopelto, Bahram Djafari-Rouhani

The generation of acoustic waves in structured nanobeams containing optomechanic cavities is a topic of current interest. In this paper, we theoretically study the efficient conversion of surface acoustic waves (SAW) generated on a substrate by an RF electric signal into the acoustic waves of a…

Journal of Physics D: Applied Physics, 2019, 52 (32), pp.32LT01. ⟨10.1088/1361-6463/ab2297⟩. ⟨hal-03138042⟩