Publicaciones

Tipo de Documento

Palabras clave

Autor

De

Au

Affichage de 571 à 580 sur 16100

Communication dans un congrès

Étude expérimentale des modulations en régime sonique et de la génération d’interfaces temporelles dans un cristal phononique piézoélectrique contrôlable

Charles Croënne, Florian Allein, Sarah Tessier Brothelande, Jérome O Vasseur, Frédéric Giraud, Bertrand Dubus

Les propriétés de dispersion des ondes élastiques se propageant dans des cristaux phononiques piézoélectriques peuvent être modifiées grâce à de simples changements des conditions électriques imposées. Par exemple, pour un empilement d’anneaux piézoélectriques séparés par de fines électrodes, ces...

CFA 2025 - 17e Congrès Français d'Acoustique, Société Française d'Acoustique (SFA), Apr 2025, Paris, France. ⟨hal-05365931⟩

Article dans une revue

Signal estimation and uncertainties extraction in TeraHertz Time Domain Spectroscopy

Elsa Denakpo, Théo Hannotte, Noureddin Osseiran, François Orieux, Romain Peretti

<div><p>Terahertz Time Domain Spectroscopy (THz-TDS) systems have emerged as mature technologies with significant potential across various research fields and industries. However, the lack of standardized methods for signal and noise estimation and reduction hinders its full potential....

IEEE Transactions on Instrumentation and Measurement, 2025, 74, pp.1-13. ⟨10.1109/TIM.2025.3554287⟩. ⟨hal-04725491v2⟩

Article dans une revue

Ultrasound-actuated microfluidic flow focusing allows control of bubble size and production rate

Sarah Cleve, Tim Segers, Michel Versluis, Guillaume Lajoinie

Microfluidic flow focusing is a promising tool for the creation of monodisperse microbubbles, such as ultrasound contrast agents. However, industrial-scale bubble production remains elusive due to a lack of control over bubble size and production rate in devices with paralellized flow-focusing...

Physical Review Applied, 2025, 23 (5), pp.L051004. ⟨10.1103/PhysRevApplied.23.L051004⟩. ⟨hal-05233678⟩

Article dans une revue

Low-Profile Quad-Band AMC-Backed Antenna for Gain Enhancement

Z. Mordi, Z. Hamouda, M. Lagha, Pierre Laly, Tuami Lasri

The article details the design and performance of a compact, quad-band antenna that uses an artificial magnetic conductor to significantly enhance its gain for wireless applications. Topics include the antenna's structure and operating principle, the critical role of parametric studies in...

Microwave journal, 2025, 68 (8), pp.133. ⟨hal-05495690⟩

Article dans une revue

Using Synapse Saturation in Spiking Neural Networks for Wake Up Receivers in Internet of Things Networks

Guillaume Marthe, Claire Goursaud, Laurent Clavier

Energy consumption remains a predominant constraint in numerous Internet of Things (IoT) applications, as microcontrollers typically exhibit excessively high power consumption. To address this issue, novel circuit designs have been introduced, and the utilization of spiking neurons and analog...

IEEE Internet of Things Journal, 2025, pp.1-1. ⟨10.1109/JIOT.2025.3599668⟩. ⟨hal-05229337⟩

Article dans une revue

Thermal Enhancement of GaN Schottky Diodes Annealed at 600°C for High Power and High Temperature RF Applications

Beatriz Orfao, Amir Al Abdallah, Hugo Bouillaud, Guillaume Ducournau, Yannick Roelens, Malek Zegaoui, Mohammed Zaknoune

In this paper, we report the investigation of the thermal enhancement and the behavior of GaN Schottky diodes grown by metal organic chemical vapor deposition (MOCVD) on sapphire substrates for RF power applications and their potential to operate under extreme temperature. The Schottky barrier...

Electronics Letters, 2025, 61 (1), pp.e70307. ⟨10.1049/ell2.70307⟩. ⟨hal-05149241⟩

Article dans une revue

ScAlN/GaN-on-Si (111) HEMTs for RF applications

Seif El Whibi, Nagesh Bhat, Yassine Fouzi, Nicolas Defrance, Jean-Claude de Jaeger, Zahia Bougrioua, Florian Bartoli, Maxime Hugues, Yvon Cordier, Marie Lesecq

ScAlN is a promising barrier material for next generation RF high electron mobility transistors, outperforming AlGaN thanks a higher 2-dimensional electron gas (2DEG) density and a thinner barrier with a lower lattice mismatch with GaN. A sub-10 nm barrier ScAlN/GaN heterostructure, grown by...

Applied Physics Express, 2025, 18 (4), pp.046501. ⟨10.35848/1882-0786/adc5db⟩. ⟨hal-05008937⟩

Article dans une revue

Topological Berry Antenna on a Silicon Chip for Terahertz Wireless Communication

Sonu Kumar, Ridong Jia, Yi Ji Tan, Thomas Caiwei Tan, Pascal Szriftgiser, G Arun Kumar, Guillaume Ducournau, Arokiaswami Alphones, Ranjan Singh

Nonzero Berry curvature is central to the existence of topological edge states in electronic and photonic valley-Hall systems. While manipulating the Berry curvature in condensed matter systems is challenging, valley-Hall topological photonics offer unprecedented control, where the broken spatial...

Advanced Photonics Research, In press, ⟨10.1002/adpr.202500123⟩. ⟨hal-05131748⟩

Article dans une revue

Strategies to achieve efficiencies of over 19% for organic solar cells

Xingchi Xiao, Malika Chalh, Zhi Rong Loh, Esther Mbina, Tao Xu, Roger C. Hiorns, Yujia Li, Maloy Das, Kekeli N'Konou, Leonard W T Ng

Organic solar cells are a promising system for generating clean energy. Recent advancements, particularly in non-fullerene acceptors such as Y6 and its derivatives, along with the development of innovative polymer donors, have significantly enhanced the power conversion efficiency of organic solar...

Cell Reports Physical Science, 2025, 6 (1), pp.102390. ⟨10.1016/j.xcrp.2024.102390⟩. ⟨hal-04932307⟩

Communication dans un congrès

Analyse de corrélations temporelles entre différentes données météorologiques via la sonification

Arthur Paté, Pierre Henry

Les lacs et les mers fermées présentent des modes de résonance appelées seiches à des périodes de quelques minutes à quelques heures (intermédiaires entre la houle et les marées). La caractérisation de ces modes permet une meilleure modélisation des tsunamis. En dehors des évènements extrêmes, ces...

CFA 2025 - 17e Congrès Français d'Acoustique, Société Française d'Acoustique (SFA), Apr 2025, Paris, France. ⟨hal-05365107⟩