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Affichage de 6081 à 6090 sur 16120

Article dans une revue

Nickel Decorated on Phosphorous-Doped Carbon Nitride as an Efficient Photocatalyst for Reduction of Nitrobenzenes

Anurag Kumar, Pawan Kumar, Chetan Joshi, Manvi Manchanda, Rabah Boukherroub, Suman L Jain

Nickel nanoparticle-decorated phosphorous-doped graphitic carbon nitride (Ni@g-PC 3 N 4) was synthesized and used as an efficient photoactive catalyst for the reduction of various nitrobenzenes under visible light irradiation. Hydrazine monohydrate was used as the source of protons and electrons…

Nanomaterials, 2016, 6 (4), pp.59. ⟨10.3390/nano6040059⟩. ⟨hal-01456554⟩

Communication dans un congrès

Characterization and modeling of traps and RF frequency dispersion in AlGaN/AlN/GaN HEMTs

Hector Sanchez-Martin, Oscar Garcia-Perez, Ignacio Íñiguez-De-La-Torre, Susana Perez, Tomás González, Javier Mateos, Philippe Altuntas, N. Defrance, Marie Lesecq, Virginie Hoel, Yvon Cordier, Stephanie Rennesson

The performance of GaN transistors is still limited by physical and fabrication problems, mainly related to different kinds of traps. In this work, virgin transistors reveals strong low frequency dispersion both in the transconductance and output conductance, that we attribute to the presence of…

11th European Microwave Integrated Circuits Conference (EuMIC), Oct 2016, London, United Kingdom. paper EuMIC10-03, 153-156, ⟨10.1109/EuMIC.2016.7777513⟩. ⟨hal-03270103⟩

Communication dans un congrès

A Digital Delay Line with Coarse/Fine tuning through Gate/Body biasing in 28nm FDSOI

Ilias Sourikopoulos, Antoine Frappé, Andreia Cathelin, Laurent Clavier, Andreas Kaiser

This paper discusses the design and characterization of a programmable digital delay line. The core of the proposed architecture is a thyristor-type delay element featuring the capability for coarse/fine tuning without using any additional hardware. This is made possible by taking advantage of body…

46th European Solid-State Device Research Conference (ESSDERC) / 42nd European Solid-State Circuits Conference (ESSCIRC), Sep 2016, Lausanne, Switzerland. pp.145-148, ⟨10.1109/ESSCIRC.2016.7598263⟩. ⟨hal-03270099⟩

Communication dans un congrès

Personal radio-frequency exposimeters in indoor diffuse environments: Measurement and simulation

Reza Aminzadeh, Arno Thielens, Aliou Bamba, Lamine Kone, Davy Gaillot, M. Lienard, Luc Martens, Wout Joseph

The response of personal exposimeters (PEMs) is studied under diffuse field exposure in indoor environments. A numerical model and a setup for on-body calibration measurements in a reverberation chamber (RC) is proposed for 897–5500 MHz. The proposed numerical simulations are in good agreement with…

10th European Conference on Antennas and Propagation, EuCAP 2016, Apr 2016, Davos, Switzerland. Session A23 - Dosimetry, exposure and SAR assessment, 5 p., ⟨10.1109/EuCAP.2016.7481668⟩. ⟨hal-03346232⟩

Communication dans un congrès

A co-design space exploration tool for avionic high performance heterogeneous embedded architectures

Geoffroy Pertuisot, Nicolas Belanger, Yassin El Hillali, Smail Niar, Atika Rivenq

Avionics in the helicopter manufacturers' landscape faces new challenges. Whereas customers raise continuously their needs in terms of new functions and embedded systems performances, certification authorities maintain complex rules to fulfill for parallel computing. This constraining…

11th International Design and Test Symposium, IDT 2016, Dec 2016, Hammamet, Tunisia. pp.77-82, ⟨10.1109/IDT.2016.7843018⟩. ⟨hal-03528686⟩

Communication dans un congrès

Contact resistance study of “edge-contacted” metal-graphene interfaces

V. Passi, A. Gahoi, J. Ruhkopf, S. Kataria, Francois Vaurette, E. Pallecchi, H. Happy, M. C. Lemme

The contact resistance RC of "edge-contacted" metal-graphene interfaces is systematically studied. Our experiments demonstrate a reduction of contact resistance by intentional patterning of graphene to create "edge contacts". The parameter space for different hole patterns in…

46th European Solid-State Device Conference, ESSDERC 2016, Sep 2016, Lausanne, Switzerland. pp.236-239, ⟨10.1109/ESSDERC.2016.7599629⟩. ⟨hal-03335829⟩

Communication dans un congrès

Deep Trench Isolation and Through Silicon Via Wetting Characterization by High-Frequency Acoustic Reflectometry

Christophe Virgilio, Lucile Broussous, Philippe Garnier, Julien Carlier, Pierre Campistron, V. Thomy, Malika Toubal, Pascal Besson, Laurence Gabette, Bertrand Nongaillard

Wetting efficiency of microstructures or nanostructures patterned on Si wafers is a real concern in integrated circuits manufacturing. We present here a high-frequency acoustic method which enables the local determination of the wetting state of a liquid on real DTI and TSV structures. Partial…

13th International Symposium on Ultra Clean Processing of Semiconductor Surfaces (UCPSS), Sep 2016, Knokke, Belgium. ⟨10.4028/www.scientific.net/SSP.255.129⟩. ⟨hal-03280231⟩

Communication dans un congrès

Development of a patch antenna based on a Polyaniline/Carbon coated Cobalt composite

Z. Hamouda, J.-L. Wojkiewicz, A.A. Pud, Lamine Kone, C. Hamouda, S. Bergheul, T. Lasri

In this study, a patch antenna including a thick film made of a composite material based on Polyaniline (PANI) and Carbon coated Cobalt (CCo) is investigated. Conception, simulation, realization and characterization steps are presented. The morphology of the obtained composite was studied via…

10th European Conference on Antennas and Propagation, EuCAP 2016, Apr 2016, Davos, Switzerland. pp.7481557, ⟨10.1109/EuCAP.2016.7481557⟩. ⟨hal-03538361⟩

Article dans une revue

Enhanced ultraviolet luminescence of ZnO nanorods treated by high-pressure water vapor annealing (HWA)

Amer Al-Nafiey, Brigitte Sieber, B. Gelloz, Ahmed Addad, M. Moreau, Julien Barjon, Maria Girleanu, Ovidiu Ersen, Rabah Boukherroub

Zinc oxide nanorods (ZnO NRs), synthesized by a low temperature chemical method, were postannealed at 260°C in air and under high pressure water vapor (HWA) at 1.3-3.9 MPa. We found that the UV luminescence intensity increased by a factor of 2-3 after HWA annealing compared to that observed after…

Journal of Physical Chemistry C, 2016, 120, pp.4571 - 4580. ⟨10.1021/acs.jpcc.5b09201⟩. ⟨hal-01348817⟩

Article dans une revue

Investigations on the mechanical properties of the elementary thin films composing a CuIn1−xGaxSe2 solar cell using the nano indentation technique.

Hocine Abib, Alain Iost, Alex Montagne, Khadidja Rahmoun, Boubakeur Ayachi, Jean-Pierre Vilcot

The aim of this work is to assess the mechanical properties of the different layers composing a CIGS based solar cell. Fabrication uses the magnetron sputtering deposition technique (except for the CdS layer which was deposited using chemical bath deposition process). We performed several…

Thin Solid Films, 2016, pp.1-5. ⟨10.1016/j.tsf.2016.11.013⟩. ⟨hal-03166870⟩