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Affichage de 4741 à 4750 sur 16232

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⟩

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

Plasmon-Induced Electrocatalysis with Multi-Component Nanostructures

Palaniappan Subramanian, Dalila Meziane, Robert Wojcieszak, Franck Dumeignil, Rabah Boukherroub, Sabine Szunerits

Noble metal nanostructures are exceptional light absorbing systems, in which electron–hole pairs can be formed and used as “hot” charge carriers for catalytic applications. The main goal of the emerging field of plasmon-induced catalysis is to design a novel way of finely tuning the activity and...

Materials, 2019, Materials, 12 (1), pp.43. ⟨10.3390/ma12010043⟩. ⟨hal-02309136⟩

Article dans une revue

Electromagnetic physical modeling of a gallium nitride distributed transferred electron device based planar waveguide structure THz oscillator

Christophe Dalle

The potential of a planar waveguide structure terahertz oscillator based on a gallium nitride distributed transferred electron device is theoretically investigated. The circuit numerical physical modeling relies on a two-dimensional time-domain electromagnetism/transport simulator. It is based on...

Advanced Electromagnetics, 2019, 8 (4), pp.89-102. ⟨10.7716/aem.v8i4.1214⟩. ⟨hal-02395343⟩

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

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

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

Sensitivity to Dispersion Forces in First-Principles Modeling of Disordered Chalcogenides

Carlo Massobrio, Évelyne Martin, Ziyad Chaker, Mauro Boero, Assil Bouzid, Sébastien Le Roux, Guido Ori

The inclusion of dispersion (van der Waals, vdW) forces in first-principles modeling of disordered chalcogenides is analyzed and critically discussed in view of their impact on the atomic structure. To this purpose we considered the case of glassy GeTe4. We selected a vdW correction (termed vdWG...

Frontiers in Materials. Computational Materials Science section, 2018, 5, ⟨10.3389/fmats.2018.00078⟩. ⟨hal-02312708⟩

Thèse

Structures périodiques et désordonnées pour l’absorption des ondes électromagnétiques, Periodic and disordered structures for the absorption of electromagnetics waves

Nicolas Fernez

L’absorption des ondes électromagnétiques est un objectif suscitant beaucoup d’intérêt de nos jours notamment pour les applications en furtivité dans le domaine militaire, mais également dans le domaine civil pour limiter l’exposition aux signaux de communication sans fil et pour préserver l’..., Absorption of electromagnetic power arouses a lot of interest not solely for stealth applications in military domain, but also in civil life to reduce the exposure to wireless communication signals and to preserve the totality of exchanged information. Absorbers designing for low frequency domain...

Micro et nanotechnologies/Microélectronique. Université de Lille, 2018. Français. ⟨NNT : 2018LILUI081⟩. ⟨tel-03621958⟩

Thèse

Étude par microscopie à sonde locale des propriétés électriques de monocouches auto-assemblées de molécules photo-commutables sur substrats ferromagnétiques, C-AFM study of photoswitchable Self-Assembled Monolayers on ferromagnetic substrates

Louis Thomas

Ce manuscrit traite du transport à travers des monocouches auto-assemblées (self-assembled monolayers, SAMs) de molécules photoisomérisables greffées sur des matériaux ferromagnétiques (FMs) pour des applications à la frontière de l'électronique moléculaire et de la spintronique. Ces systèmes..., This thesis focuses on electrical transport through self-assembled monolayers (SAMs) of photoisomerisable compounds grafted on ferromagnetic materials (FMs) for applications at the frontier between molecular electronics and spintronics. These systems have been characterized by conductive atomic...

Micro et nanotechnologies/Microélectronique. Université de Lille, 2018. Français. ⟨NNT : 2018LILUI086⟩. ⟨tel-02771798v2⟩