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Affichage de 11 à 20 sur 16170

Article dans une revue

Wide-Angle Reflective Terahertz Beam Steering Metasurface Based on Cross-Polarization Conversion

Mengyao Li, Zhonghua Gu, Cheemalamarri Hemanth Kumar, Nanhan Liu, Frédéric Dutin, Pascal Szriftgiser, Guillaume Ducournau, Prakash Pitchappa

The terahertz (THz) frequency range is considered an important spectrum for future six-generation communication. However, the high propagation losses and poor penetration inherent to THz waves restricted its development. Wavefront manipulation techniques for beam steering to redirect the…

IEEE Transactions on Terahertz Science and Technology, 2026, 16 (3), pp.307-317. ⟨10.1109/TTHZ.2025.3626144⟩. ⟨hal-05548954⟩

Article dans une revue

Dynamics of the harmonic acoustic pneumatic source for active control of time-varying tonal noise

Alexandre Schiavini, Philippe Micheau, Pierre Grandjean, Gwénaël Gabard, Thomas Humbert

The Harmonic Acoustic Pneumatic Source (HAPS), a mechanical airflow modulator, is a promising alternative to loudspeakers as secondary sources for the active control of harmonic noise, thanks to its ability to generate high sound pressure levels and to precisely control signal frequency, phase, and…

Applied Acoustics, 2026, 245, pp.111219. ⟨10.1016/j.apacoust.2025.111219⟩. ⟨hal-05441126⟩

Thèse

Microcavités pour composants RF-SOI-CMOS ultra-rapides pour application 5G et delà, Microcavities for ultra-fast RF-SOI-CMOS components for 5G applications and beyond

Daniel Gheysens

Le développement des standards de communication mobile impose des exigences toujours plus strictes aux commutateurs radiofréquence (RF), notamment en termes de bande passante, pertes, linéarité et bruit. La technologie RF SOI-CMOS partiellement déplétée s’est imposée comme la solution dominante…, The development of mobile communication standards imposes increasingly stringent requirements on radio frequency (RF) switches, particularly in terms of bandwidth, losses, linearity, and noise. Partially depleted SOI-CMOS RF technology has emerged as the dominant solution thanks to an optimal…

Physique [physics]. Université de Lille, 2026. Français. ⟨NNT : ⟩. ⟨tel-05525162⟩

Article dans une revue

Quantum Coherent Transport of 1D Ballistic States in Second-Order Topological Insulator Bi4⁢Br4

Jules Lefeuvre, Masaru Kobayashi, Gilles Patriarche, Nathaniel Findling, David Troadec, Meydi Ferrier, Sophie Guéron, Hélène Bouchiat, Takao Sasagawa, Richard Deblock

We investigate quantum transport in micrometer-sized single crystals of Bi$_4$Br$_4$, a material predicted to be a second-order topological insulator. 1D topological states with long phase coherence times are revealed via the modulation of quantum interferences with magnetic field and gate voltage…

Physical Review X, 2026, 16 (1), pp.011031. ⟨10.1103/2bqq-t7ml⟩. ⟨hal-04970280⟩

Article dans une revue

Synthesis and characterization of vertical diode based on organic P-N heterojunction with rectification behavior

Khaldi Wassim, Chatbouri Samir, Ferchichi Khaoula, Boubaker Aimen, Kalboussi Adel, Kamal Lmimouni

In this paper, we report a combined experimental and theoretical study on an organic diode heterostructure based on n-type polymer, N2200, and p-type, pentacene, junction. First the device under investigation was fabricated and characterized. The structure exhibits rectifying diode behavior with a…

Applied physics. A, Materials science & processing, 2026, 132 (3), pp.178. ⟨10.1007/s00339-026-09292-w⟩. ⟨hal-05524929⟩

Thèse

Étude et développement d’un réseau véhiculaire hybride pour la perception augmentée des Véhicules Autonomes, Study and development of hybrid vehicular network to increase the perception of Autonomous Vehicles

Mohamed Amine BOUZAIDI TIALI

Avec l’essor des véhicules autonomes dans l’industrie automobile, les exigences en matière de perception embarquée ont considérablement évolué. Les systèmes de localisation par GPS et les capteurs multimodaux embarqués (Caméras, Radars, LIDARs) ne suffisent plus à garantir une perception fiable et…, With the growing presence of autonomous vehicles in the automotive market, the demands on perception systems have significantly evolved. Traditional GPS-based localization and onboard multimodal perception (Cameras, Radars, LIDARs) are no longer sufficient to ensure reliable and comprehensive…

Systèmes embarqués. Université Polytechnique Hauts-de-France; Institut national des sciences appliquées Hauts-de-France, 2026. Français. ⟨NNT : 2026UPHF0010⟩. ⟨tel-05514475⟩

HDR

[HDR] Jets, Bulles, Films et Particules : quelques problèmes aux interfaces libres, [HDR] Jets, Bubbles, Films and Particles: some problems at free interfaces

Alexis Duchesne

Les travaux présentés dans ce mémoire d’HDR sont la synthèse de sept années de recherche centrées sur la compréhension expérimentale de phénomènes impliquant des interfaces libres, des interactions fluide/solide, ainsi que des effets thermiques. Ce manuscrit développe une approche fondée sur des…, The work presented in this HDR manuscript is the synthesis of seven years of research focused on the experimental understanding of phenomena involving free interfaces, fluid/solid interactions, and thermal effects. This manuscript develops an approach based on simple yet revealing experiments,…

Physique [physics]. Université de Lille, 2026. ⟨tel-05480238⟩

Article dans une revue

The Role of Absolute Space in Newton's Physics

Raffaele Pisano, Paolo Bussotti

In this paper, we examine Newton’s concept of absolute space. We aim at clarifying: (1) the reasons that led Newton to introduce this notion; (2) the arguments he used to justify its existence; (3) the relationship between absolute space and the principle of inertia; and (4) the role of absolute…

Foundations of Science, 2026, IDTC Special Issue. Newton's Principia & Newtonian Mechanics: Foundations, Heritage, Methodology, Editions, Popularization and Nature of Science Teaching Newton, ⟨10.1007/s10699-025-10023-2⟩. ⟨hal-05071124⟩

Article dans une revue

Torricelli’s Opera Geometrica (1644): Methods, Procedures, and the Structure of Mathematical Proof

Raffaele Pisano, Paolo Bussotti

This historical–scientific essay is written in the context of the scholarly celebrations marking the 380th anniversary of the publication of Evangelista Torricelli’s Opera Geometrica (1644–2024), and forms part of recent international initiatives devoted to a renewed historical and…

Torricelliana , In press, ⟨10.1007/s10699-025-10023-2⟩. ⟨hal-05523713⟩

Article dans une revue

Microfabricated alkali-vapor cells with tunable He - Ne buffer-gas mixture using reservoirs with laser-actuated break seals

Clément Carlé, Andrei Mursa, Gabriel Faure, Shervin Keshavarzi, Quentin Tanguy, Emmanuel Klinger, Vincent Maurice, Rodolphe Boudot, Nicolas Passilly

We report on the generation of a tunable buffer-gas mixture within microfabricated alkali-vapor cells. We show that the combination of low-permeation windows with sequential openings of laser-actuated break seals enables adjustment of a He -Ne noble gas mixture, fully compatible with alkali-metal…

Physical Review Applied, 2026, 25 (2), pp.024017. ⟨10.1103/wyz6-rntk⟩. ⟨hal-05524751⟩