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Affichage de 1871 à 1880 sur 16261

Article dans une revue

Spin Seebeck effect and thermal properties of zigzag graphene nanoribbons with edge magnetism

Jing Li, Yann-Michel Niquet, Christophe Delerue

Zigzag graphene nanoribbons (GNRs), demonstrating edge magnetism, are fascinating materials for electronic and spintronic applications. In this paper, we investigate with explicit consideration of electron-phonon scattering the Seebeck effect and thermal conductivity at various carrier densities in...

Physical Review B, 2023, 107 (24), pp.245417. ⟨10.1103/PhysRevB.107.245417⟩. ⟨hal-04140310⟩

Communication dans un congrès

On exploiting the synaptic interaction properties to obtain frequency-specific neurons

Guillaume Marthe, Claire Goursaud, Romain Cazé, Laurent Clavier

Energy consumption remains the main limiting factors in many IoT applications. In particular, micro-controllers consume far too much power. In order to overcome this problem, new circuit designs have been proposed and the use of spiking neurons and analog computing has emerged as it allows a very...

DCAS 2023 - IEEE 16th Dallas Circuits and Systems Conference, Apr 2023, Denton, United States. pp.1-6, ⟨10.1109/DCAS57389.2023.10130264⟩. ⟨hal-04182362⟩

Pré-publication, Document de travail

A vision transformer-based framework for knowledge transfer from multi-modal to mono-modal lymphoma subtyping models, Un framework basé sur le vision transformer pour le transfert de connaissance multi-modal vers mono-modal de modèles de sous-typage de lymphome.

Bilel Guetarni, Feryal Windal, Halim Benhabiles, Marianne Petit, Romain Dubois, Emmanuelle Leteurtre, Dominique Collard

Determining lymphoma subtypes is a crucial step for better patient treatment targeting to potentially increase their survival chances. In this context, the existing gold standard diagnosis method, which relies on gene expression technology, is highly expensive and time-consuming, making it less...

2024. ⟨hal-04456283⟩

Article dans une revue

Fabrication of silicon nitride membrane nanoelectromechanical resonator

Hao Xu, Srisaran Venkatachalam, Christophe Boyaval, Pascal Tilmant, Francois Vaurette, Yves Deblock, Didier Theron, Xin Zhou

In this work, we present details of the nanofabrication process for achieving a silicon nitride nanoelectromechanical resonator, consisting of a membrane covered with a thin aluminium layer capacitively coupled to a suspended top gate. Critical nanofabrication steps have been discussed, including...

Microelectronic Engineering, 2023, 280, pp.112064. ⟨10.1016/j.mee.2023.112064⟩. ⟨hal-04172152⟩

Article dans une revue

Metal-based folded-thermopile for 2.5D micro-thermoelectric generators

Ibrahim Bel-Hadj, Zahia Bougrioua, Katir Ziouche

We report on the simulation and fabrication of 2.5D micro-thermoelectric generators (µTEGs) with a thermopile topology periodically folded and distributed on a multi-membrane template, capable of harvesting lost heat directly into useful electrical energy. The originality of the folded thermopile...

Sensors and Actuators A: Physical , 2023, 349, pp.114090. ⟨10.1016/j.sna.2022.114090⟩. ⟨hal-03899754⟩

Article dans une revue

Topological vortex mode for flexural waves in pillared plates

Zhihui Wen, Julio Andrés Iglesias Martínez, Yabin Jin, Yan Li, Bahram Djafari-Rouhani, Daniel Torrent, Jean-Louis Raynaud, Abdelkrim Khelif

Localized topological modes with high robustness to various perturbations are receiving increasing attention. Recently, zero-order topological vortex modes have been designed in phononic structures, in analogy with zero-energy fermionic states modulated by Jackiw-Rossi binding mechanism. Such...

Materials & Design, 2023, 233, pp.112209. ⟨10.1016/j.matdes.2023.112209⟩. ⟨hal-04188368⟩

Communication dans un congrès

THz topological Waveguides in 600 GHz frequency Region

Abdu Subahan Mohamed, Edouard Lebouvier, Gaëtan Lévêque, Yan Pennec, Marc Faucher, Alberto Amo, Pascal Szriftgiser, Guillaume Ducournau

We experimentally demonstrate a silicon-based valley photonic crystal (VPC) waveguide for the 590-620 GHz frequency region. We specifically conduct measurements on the transmission and group delay for normal silicon waveguides and Valley photonic crystal waveguides and state that topological valley...

2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Sep 2023, Montreal, Canada. ⟨10.1109/IRMMW-THz57677.2023.10298871⟩. ⟨hal-04277479⟩

Article dans une revue

One-channel time reversal focusing of ultra-high frequency acoustic waves on a MEMS

Hatem Dahmani, Nikolay Smagin, P. Campistron, J. Carlier, Malika Toubal, Bertrand Nongaillard

This Letter reports on a work performed to fabricate and characterize a silicon micro-machined cavity dedicated to micro-resolution Ultra-High Frequency imaging in microfluidics and microbiological applications using one-channel time reversal. Time reversal provides the means to spatially and...

Applied Physics Letters, 2023, 122 (10), pp.102201. ⟨10.1063/5.0142179⟩. ⟨hal-04215309⟩

Article dans une revue

Robust Al0.23Ga0.77N channel HFETs on bulk AlN for high voltage power electronics

J. Mehta, Idriss Abid, Reda Elwaradi, Yvon Cordier, F Medjdoub

AlxGa1-xN heterojunction FETs (HFETs) have been an eye catcher for high voltage power electronics with its potential to outperform the predecessors by virtue of high critical breakdown field of the material, which can be tuned by varying Al mole-fraction. In this work, we demonstrate Al0.23Ga0.77N...

e-Prime – Advances in Electrical Engineering, Electronics and Energy, 2023, 5, pp.100263. ⟨10.1016/j.prime.2023.100263⟩. ⟨hal-04194891⟩

Article dans une revue

Effect of electronic stopping in molecular dynamics simulations of collision cascades in gallium arsenide

Johannes L. Teunissen, Thomas Jarrin, Nicolas Richard, Natalia E. Koval, Daniel Muñoz Santiburcio, Jorge Kohanoff, Emilio Artacho, Fabrizio Cleri, Fabiana da Pieve

Understanding the generation and evolution of defects induced in matter by ion irradiation is of fundamental importance to estimate the degradation of functional properties of materials. Computational approaches used in different communities, from space radiation effects to nuclear energy...

Phys.Rev.Mater., 2023, 7 (2), pp.025404. ⟨10.1103/PhysRevMaterials.7.025404⟩. ⟨hal-04006144⟩