Publications

• Article dans une revue

Tilted columnar metal film as transducer of transverse coherent acoustic phonons in picosecond acoustics

A. Chargui, N. Martin, G. Ferro, Arnaud Devos

Picosecond acoustics has been widely used to study thin film elasticity, hypersound attenuation, and adhesion of thin films to substrates. A major limitation of the technique is its restriction to only longitudinal waves. Although work has been reported on the ultrafast generation and detection of…

Applied Physics Letters, 2024, 125 (19), pp.192202. ⟨10.1063/5.0228331⟩. ⟨hal-04774895⟩

• Communication dans un congrès

A New Nano-Generator-Photovoltaic Cell Platform for Transforming Motion on Earth to Electrical Energy: Theoretical Study

Adda Boualem, Marwane Ayaida, Cyril de Runz

2023 International Conference on Electrical, Communication and Computer Engineering (ICECCE), Dec 2023, Dubai, United Arab Emirates. pp.1-9, ⟨10.1109/ICECCE61019.2023.10442362⟩. ⟨hal-04517283⟩

• Article dans une revue

Surface acoustic wave confinement inside uncorrelated distributions of subwavelength scatterers

Thibault Deletang, Adnane Noual, Bernard Bonello, Roman Buisine, Yan Pennec, Bahram Djafari-Rouhani

We report an experimental study of surface acoustic wave (SAW) localization and propagation in random metasurfaces composed of Al scatters using pump–probe spectroscopy. Thanks to this technique, wideband high frequency acoustic modes are generated, and their dynamical propagation directly from…

Journal of Applied Physics, 2023, 134 (24), pp.134, 243102-1. ⟨10.1063/5.0173970⟩. ⟨hal-04435488⟩

• Article dans une revue

Terahertz molecular water laser using quantum cascade laser pumping

L. Juppet, Alexandra Khabbaz, J. Lampin, O. Pirali

Molecular lasers pumped by quantum cascade laser (QCL) open new possibilities for THz generation and its numerous applications, in particular, for high resolution molecular spectroscopy. In this article, a THz water laser pumped by a mid-infrared QCL was demonstrated using the broad tunability of…

Journal of Applied Physics, 2023, 134 (24), pp.243101. ⟨10.1063/5.0177191⟩. ⟨hal-04374579⟩

• Article dans une revue

Demonstration of avalanche capability in 800 V vertical GaN-on-Silicon diodes

Youssef Hamdaoui, Idriss Abid, Sondre Michler, Katir Ziouche, F Medjdoub

High-quality pseudo-vertical p-n diodes using a GaN-on-silicon heterostructure are reported. An optimized fabrication process including a beveled deep mesa as edge termination and reduced ohmic contact resistances enabled high on-state current density and low onresistance. A uniform breakdown…

Applied Physics Express, 2023, 17 (1), pp.016503. ⟨10.35848/1882-0786/ad106c⟩. ⟨hal-04313786⟩

• Communication dans un congrès

[Invited] Contribution aux techniques avancées de contrôle non destructif (CND) et du contrôle santé intégré (CSI)

Farouk Benmeddour

Journée scientifique des chercheurs, CRTI Chéraga, Dec 2023, Alger, Algeria. ⟨hal-04570112⟩

• Article dans une revue

Towards Explainable AI for Channel Estimation in Wireless Communications

Abdul Karim Gizzini, Yahia Medjahdi, Ali Ghandour, Laurent Clavier

Research into 6G networks has been initiated to support a variety of critical artificial intelligence (AI) assisted applications such as autonomous driving. In such applications, AI-based decisions should be performed in a real-time manner. These decisions include resource allocation, localization…

IEEE Transactions on Vehicular Technology, 2023, pp.1-6. ⟨10.1109/TVT.2023.3345632⟩. ⟨hal-04387274⟩

• Thèse

An approach based on the µ-vibration concept contributes to the characterization and objective analysis of physiological fluids, Une approche basée sur un concept µ-vibratoire pour contribuer à la caractérisation et l’analyse objective des fluides physiologiques

Victory Elias

In a world of continuous technological evolution, micro-electromechanical system (MEMS) sensors are becoming increasingly prominent in various fields such as biomedicine, the aerospace industry,and information and communication technologies. At the heart of this revolution, cantilever microbeams…, Dans un monde en constante évolution technologique, les capteurs micro électromécaniques (MEMS) prennent une place prépondérante dans divers domaines tels que la biomédecine, l’industrie aérospatiale et les technologies de l’information et de la communication. Au cœur de cette révolution, les micro…

Micro and nanotechnologies/Microelectronics. Université Polytechnique Hauts-de-France, 2023. English. ⟨NNT : 2023UPHF0044⟩. ⟨tel-04453566⟩

• Article dans une revue

Real-time, chirped-pulse heterodyne detection at room-temperature with 100GHz 3dB-bandwidth mid-infrared quantum-well photodetectors

Quyang Lin, Michael Hakl, Sylvie Lepilliet, Hua Li, Jean-Francois Lampin, Emilien Peytavit, Stefano Barbieri

Thanks to intrinsically short electronic relaxation on the ps time scale, III-V semiconductor unipolar devices are ideal candidates for ultrahigh-speed operation at mid-infrared frequencies. In this work, antenna-coupled, GaAs-based multi quantum-well photodetectors operating in the 10-11`m range…

Optica, 2023, 10 (12), pp.1700-1708. ⟨10.1364/OPTICA.505745⟩. ⟨hal-04291689⟩

• Thèse

Interaction of ultrasonic waves with frictional defects in the context of nondestructive testing of materials, Interaction des ondes ultrasonores avec les défauts de frottement dans le contexte du contrôle non destructif des matériaux, Interactie van ultrasone golven met wrijvingsdefecten in de context van niet-destructief materiaalonderzoek

Ravi Verma

This thesis concerns theoretical concepts, models, and experiments for elastic wave propagation and vibrations in solids containing internal contacts (cracks, delaminations, etc.) having frictional nature. The study is oriented to nondestructive testing and therefore focuses on the case where the…, Cette thèse porte sur les concepts théoriques, les modèles et les expériences concernant la propagation des ondes élastiques et les vibrations dans les solides contenant des contacts internes (fissures, délaminations, etc.) ayant une nature frictionnelle.Une partie essentielle du travail est liée…

Acoustics [physics.class-ph]. Université de Lille; Katholieke Universiteit Leuven (Brabant flamand, Belgique ; 1970-..), 2023. English. ⟨NNT : 2023ULILN063⟩. ⟨tel-04618908⟩