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Affichage de 2641 à 2650 sur 16428

  • Communication dans un congrès

Active holographic tweezers based on spiraling interdigitated transducers

Michael Baudoin, Roudy Al Sahely, Zhixiong Gong, Olivier Bou Matar, J-C Gerbedoen, Nikolay Smagin, Ravinder Chutani

Recently, our team demonstrated the selective manipulations of microparticles [Baudoin et al., Sci. Adv. 5, eaav1967 (2019)] and cells [Baudoin et al., Nat. Commun. 11, 4244 (2020)] in a standard microscopy environment with active holographic tweezers based on spiraling interdigitated transducers.…

182nd Meeting of the Acoustical Society of America, May 2022, Denver, United States. pp.A121-A121, ⟨10.1121/10.0010844⟩. ⟨hal-03675834⟩

  • Article dans une revue

Deep learning based face beauty prediction via dynamic robust losses and ensemble regression

Fares Bougourzi, F. Dornaika, Abdelmalik Taleb-Ahmed

In the last decade, several studies have shown that facial attractiveness can be learned by machines. In this paper, we address Facial Beauty Prediction from static images. The paper contains three main contributions. First, we propose a two-branch architecture (REX-INCEP) based on merging the…

Knowledge-Based Systems, 2022, 242, pp.108246. ⟨10.1016/j.knosys.2022.108246⟩. ⟨hal-03666367⟩

  • Article dans une revue

GaN Schottky diode on sapphire substrate for THz frequency multiplier applications

Giuseppe Di Gioia, Mohammed Samnouni, Vinay Kumar Chinni, Priyanka Mondal, Jeanne Treuttel, Malek Zegaoui, Guillaume Ducournau, Mohammed Zaknoune, Yannick Roelens

Gallium Nitride, because of its high breakdown field, and peak and saturated electron drift velocity, high chemical stability and high thermal conductivity, is a very promising material as candidate for Schottky varactor diodes for next-generation high-power frequency multipliers. Similarly to the…

Superlattices and Microstructures, 2022, 164, pp.107116. ⟨10.1016/j.spmi.2021.107116⟩. ⟨hal-03542163⟩

  • Article dans une revue

2.45 GHz natural polymer‐based flexible bandpass filter exploiting laser structuring

Abdelghafour Sid, Pierre-Yves Cresson, Nicolas Joly, Flavie Braud, Benoit Genestie, Tuami Lasri

This article presents the realization of a bandpass filter on a flexible biopolymer substrate with a suitable fabrication process. We used copper adhesive tape and laser structuring to fabricate the filter based on a quasi-lumped microstrip structure. The filter characteristics are a central…

Microwave and Optical Technology Letters, 2022, 64 (4), pp.727-732. ⟨10.1002/mop.33194⟩. ⟨hal-03587344⟩

  • Thèse

Acoustical tweezers based on acoustical vortices, for selective, 3D and contactless manipulation of micrometric particles and cells, Pinces acoustiques basées sur les vortex acoustiques pour la manipulation sélective, 3D et sans contact de particules micrométriques et de cellules

Roudy Al Sahely

Acoustical tweezers based on focused acoustical vortices open some tremendous perspectives for the in vitro and in vivo remote and selective manipulation of millimetric down to micrometric objects, with combined selectivity and applied forces out of reach with any other contactless manipulation…, Les pinces acoustiques basées sur les vortex acoustiques focalisées ouvrent de nouvelles perspectives pour la manipulation sans contact et sélective d’objets millimétriques à micrométriques, avec une sélectivité et des forces appliquées difficilement atteignables avec les autres méthodes. La…

Micro and nanotechnologies/Microelectronics. Université de Lille, 2022. English. ⟨NNT : 2022ULILN004⟩. ⟨tel-03892750⟩

  • Article dans une revue

360° polarization control of terahertz spintronic emitters using uniaxial FeCo/TbCo 2 /FeCo trilayers

Pierre Koleják, Geoffrey Lezier, Kamil Postava, Jean-Francois Lampin, Nicolas Tiercelin, Mathias Vanwolleghem

Polarization control of THz light is of paramount interest for the numerous applications offered in this frequency range. Recent developments in THz spintronic emitters allow for a very efficient broadband emission, and especially unique is their ability of THz polarization switching through…

ACS photonics, 2022, 9 (4), pp.1274-1285. ⟨10.1021/acsphotonics.1c01782⟩. ⟨hal-03475335⟩

  • Article dans une revue

Thermal and electrical cross-plane conductivity at the nanoscale in poly(3,4-ethylenedioxythiophene):trifluoromethanesulfonate thin films

Kirill Kondratenko, David Guérin, Xavier Wallart, Stéphane Lenfant, Dominique Vuillaume

Cross-plane electrical and thermal transport in thin films of a conducting polymer (poly(3,4-ethylenedioxythiophene), PEDOT) stabilized with trifluoromethanesulfonate (OTf) is investigated in this study. We explore their electrical properties by conductive atomic force microscopy (C-AFM), which…

Nanoscale, 2022, 14 (16), pp.6075-6084. ⟨10.1039/D2NR00819J⟩. ⟨hal-03625465⟩

  • Thèse

Etude de membranes photoniques dans le MIR pour le confort thermique individuel, Study of photonic membranes in the MIR for individual thermal comfort

Mohamed Boutghatin

Les vêtements sont des acteurs essentiels de notre quotidien afin de satisfaire le confort thermique du corps humain. Cependant, les vêtements conventionnels présentent généralement des performances thermiques médiocres et peu contrôlées. En effet, une variation brutale de la température de la…, Clothing is an essential part of our daily life in order to satisfy the thermal comfort of the human body. However, conventional clothing generally exhibits poor thermal performance and weakly controlled. Indeed, a sudden change in the temperature of the room considerably affects the thermal…

Micro et nanotechnologies/Microélectronique. Université de Lille, 2022. Français. ⟨NNT : 2022ULILN007⟩. ⟨tel-04112769⟩

  • Article dans une revue

Transport properties of a thin GaN channel formed in an Al0.9Ga0.1N/GaN heterostructure grown on AlN/sapphire template

Julien Bassaler, Rémi Comyn, Catherine Bougerol, Yvon Cordier, Farid Medjdoub, Philippe Ferrandis

Despite a high lateral breakdown voltage above 10 kV for large contact distances and a breakdown field of 5 MV cm −1 for short contact distances, an Al 0.9 Ga 0.1 N/GaN heterostructure with an 8 nm strained GaN channel grown on an AlN/sapphire template suffers from a low and anisotropic mobility.…

Journal of Applied Physics, 2022, 131 (12), pp.124501. ⟨10.1063/5.0077107⟩. ⟨hal-03619060⟩

  • Thèse

Antennes et métamatériaux textiles pour la récupération de l'énergie électromagnétique ambiante, Textile antennas and metamaterials for the recovery of ambient electromagnetic energy

Amine Rami Djouadi

Ce travail de thèse vise à réaliser des structures à base des métamatériaux et de métasurfaces sur des substrats flexibles (Kapton et textile) pour la récupération d’énergie électromagnétique indépendante de la polarisation de l’onde incidente. Des antennes à anneaux fendus (SRRs) et des…, This thesis work aims to produce structures based on metamaterials and metasurfaces fabricated on flexible substrates (Kapton and textile) for electromagnetic energy harvesting invariant with the incident wave polarization. Split Ring Resonators (SRRs) and metasurfaces with crossed dipoles have…

Micro et nanotechnologies/Microélectronique. Université de Lille, 2022. Français. ⟨NNT : 2022ULILN009⟩. ⟨tel-03892780⟩