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Article dans une revue

Optically Pumped Terahertz Molecular Laser: Gain Factor and Validation up to 5.5 THz

Marie-Helene Mammez, Zachary Buchanan, Olivier Pirali, Marie-Aline Martin-Drumel, Joan Turut, Guillaume Ducournau, Sophie Eliet, Francis Hindle, S Barbieri, Pascale Roy, Gaël Mouret, Jean-Francois Lampin

Quantum cascade laser-pumped terahertz (THz) gas lasers are at the edge ofrevolutionizing THz science where powerful yet tunable sources have long beenlacking. Maybe one of the last remaining drawbacks to a wider use of theseinstruments lies in the lack of available databases of potentially lasing…

Advanced Photonics Research, 2022, 3, pp.2100263. ⟨10.1002/adpr.202100263⟩. ⟨hal-03538905⟩

Article dans une revue

A survey of applied machine learning techniques for optical orthogonal frequency division multiplexing based networks

Hichem Mrabet, Elias Giacoumidis, Iyad Dayoub, Aymen Belghith

In this survey, we analyze the newest machine learning (ML) techniques applied in modern optical orthogonal frequency division multiplexing (O-OFDM) systems for access, core networks, and multi-channel transmission. From rudimentary to more advanced approaches, ML is proven to be a gold standard…

Transactions on emerging telecommunications technologies, 2022, 33, pp.e4400. ⟨10.1002/ett.4400⟩. ⟨hal-03507988⟩

Article dans une revue

Composite Multiferroic Terahertz Emitter: Polarization Control via an Electric Field

Dinar Khusyainov, Sergei Ovcharenko, Arseniy Buryakov, A. Klimov, Philippe Pernod, V. Nozdrin, E. Mishina, A. Sigov, Vladimir L. Preobrazhensky, Nicolas Tiercelin

Electrical control of conjugate degrees of freedom in multiferroics provides the advantage of reducing energy consumption to femto- and even attojoules per switch in spintronics and memory devices. This is achieved through the development of technologies that make it possible to fabricate…

Physical Review Applied, 2022, 17 (4), pp.044025. ⟨10.1103/PhysRevApplied.17.044025⟩. ⟨hal-03649158⟩

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⟩

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⟩

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⟩