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Affichage de 3521 à 3530 sur 16553

  • Communication dans un congrès

Nanoprobe study of the electric field driven insulator-to-metal transition in GaMo4S8

H. Koussir, Isabelle Lefebvre, Maxime Berthe, B. Grandidier, Pascale Diener, J. Tranchant, Benoit Corraze, Etienne Janod, Laurent Cario

The resistive switching observed under electric pulses in Mott materials has a high potential for micro and nanoelectronics. Here we report on the study of the resistive switching observed at the surface of single crystals of the canonical Mott semiconductor GaMo4S8. The study is made using a…

Journées du GDR Nanosciences with near-field microscopy under ultra high vacuum 2021, Nov 2021, Toulouse, France. ⟨hal-03606122⟩

  • Article dans une revue

Heuristically accelerated reinforcement learning for channel assignment in wireless sensor networks

Mohamed Sahraoui, Azeddine Bilami, Abdelmalik Taleb-Ahmed

In wireless sensor networks (WSNs), multi-channel communication represents an attractive field due to its advantage in improving throughput and delivery rate. However, the major challenge that faces WSNs is the energy constraint. To overcome the channel assignment problem in an energy-efficient way…

International Journal of Sensor Networks, 2021, 37 (3), pp.159. ⟨10.1504/IJSNET.2021.118877⟩. ⟨hal-03501786⟩

  • Communication dans un congrès

Cavity flow controlled with an array of magneto-mechanical micro-valves

Thomas Arnoult, Cécile Ghouila-Houri, Colin Leclercq, Aurélien Mazzamurro, Romain Viard, Eric Garnier, Denis Sipp, Alain Merlen, Abdelkrim Talbi, Philippe Pernod

This paper presents and discusses micro-magneto-mechanical valves designed for cavity flow control. Realized using microfabrication techniques and rapid prototyping, the micro-valves exhibit a small footprint and adequate performances for low-speed cavity flow control. An array of 15 micro-valves…

2021 IEEE Sensors, Oct 2021, Sydney, Australia. pp.1-4, ⟨10.1109/SENSORS47087.2021.9639871⟩. ⟨hal-03501259⟩

  • Article dans une revue

Optimization of Reactive-Ion Etching (RIE) parameters to maximize the lateral etch rate of silicon using SF6/N2 gas mixture: An alternative to etching Si in MEMS with Au components

Munique Kazar Mendes, Cécile Ghouila-Houri, Serria Hammami, Thomas Arnoult, Philippe Pernod, Abdelkrim Talbi

In this work, the effects of the N2 addition to the SF6 plasma used in the isotropic silicon etching of Microelectromechanical systems (MEMS) with Au components are investigated. A four-variables Doehlert design was implemented for optimizing the etching parameters (power, pressure, gas flow rate,…

Materials Letters, 2021, 285, pp.129058. ⟨10.1016/j.matlet.2020.129058⟩. ⟨hal-03330078⟩

  • Article dans une revue

Oxygen vacancy engineering of TaO$_x$-based resistive memories by Zr doping for improved variability and synaptic behavior

João Palhares, Yann Beilliard, F. Alibart, Everton Bonturim, Daniel de Florio, Fabio Fonseca, Dominique Drouin, Andre Ferlauto

Resistive switching (RS) devices are promising forms of non-volatile memory. However, one of the biggest challenges for RS memory applications is the device-to-device (D2D) variability, which is related to the intrinsic stochastic formation and configuration of oxygen vacancy (V$_O$) conductive…

Nanotechnology, 2021, 32 (40), pp.405202. ⟨10.1088/1361-6528/ac0e67⟩. ⟨hal-03539056⟩

  • Article dans une revue

Cobalt sulfide-reduced graphene oxide: An efficient catalyst for the degradation of rhodamine B and pentachlorophenol using peroxymonosulfate

Lylia Amirache, Fatiha Barka-Bouaifel, Priyakshree Borthakur, Manash R. Das, Hania Ahouari, Herve Vezin, Alexandre Barras, Baghdad Ouddane, Sabine Szunerits, Rabah Boukherroub

In this study, cobalt sulfide-reduced graphene oxide (CoS-rGO) nanocomposite was prepared by a solvothermal route and its structure, morphology and composition were assessed using various techniques, including transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR),…

Journal of Environmental Chemical Engineering, 2021, 9 (5), pp.106018. ⟨10.1016/j.jece.2021.106018⟩. ⟨hal-03332354⟩

  • Article dans une revue

Aggregated Euclidean Distances for a Fast and Robust Real-Time 3D-MOT

Rahmad Sadli, Mohamed Afkir, Abdenour Hadid, Atika Rivenq, Abdelmalik Taleb-Ahmed

Autonomous driving systems must have the ability to monitor the kinematic behaviour of multiple obstacles. Therefore, 3D multi-object tracking (3D-MOT) is one of the crucial modules in autonomous driving to detect the presence of potential hazard movements such as human operated vehicles and…

IEEE Sensors Journal, 2021, 21 (19), pp.21872-21884. ⟨10.1109/JSEN.2021.3104390⟩. ⟨hal-03442267⟩

  • Article dans une revue

Bandpass NGD function design for 5G microwave signal delay synchronization application

Sébastien Lalléchère, Lala Rajaoarisoa, Laurent Clavier, Raul Sanchez Galan, Blaise Ravelo

This paper introduces a design method of simple bandpass (BP) negative group delay (NGD) topology. The fundamental specifications of BP NGD function are defined. The NGD passive topology consists of parallel resistance associated with an open-ended microstrip stub. The NGD properties and…

Comptes Rendus. Physique, 2021, 22 (S1), pp.53-71. ⟨10.5802/crphys.68⟩. ⟨hal-03274859⟩

  • Article dans une revue

Design and Full Characterization of a 3-D-Printed Hyperbolic Pyramidal Wideband Microwave Absorber

Xhoandri Lleshi, Thi Quynh van Hoang, Brigitte Loiseaux, Didier Lippens

A fully 3-D-printed wideband metamaterial absorber, characterized by an absorptivity above 0.95 in the X and Ku-bands and with a fractional bandwidth of 0.71, is presented in this letter. A 250 mm × 250 mm sample, with a total thickness of 6.3 mm (0.26λ 0 ), is fabricated exploiting the fused…

IEEE Antennas and Wireless Propagation Letters, 2021, 20 (1), pp.28-32. ⟨10.1109/LAWP.2020.3037718⟩. ⟨hal-03545040⟩

  • Article dans une revue

H-Band Substrate-Integrated Discrete-Lens Antenna for High Data Rate Communication Systems

Kossaila Medrar, Loïc Marnat, Laurent Dussopt, Cybelle Belem-Gonçalves, Guillaume Ducournau, Cyril Luxey, Frédéric Gianesello

A substrate-integrated discrete-lens antenna manufactured in standard printed-circuit-board (PCB) technology is demonstrated in H-band (225-325 GHz). The arrays composed of phase-shifting unit cells and a waveguide-fed planar focal source are designed on a single PCB stack with five metal layers…

IEEE Transactions on Antennas and Propagation, 2021, 69 (7), pp.3677-3688. ⟨10.1109/TAP.2020.3044382⟩. ⟨hal-03546303⟩