Quentin Pompidou, Juan Carlos Acosta Abanto, Mélanie Brouillard, Nicolas Bercu, Louis Giraudet, Rami Sheikh, Christophe Adessi, Samy Merabia, Séverine Gomés, Pierre-Olivier Chapuis, Jean-François Robillard, Mihai Chirtoc, Nicolas Horny

Recent experimental investigations have demonstrated that doping a semiconductor is a route to increase the thermal boundary conductance at metal/semiconductor interfaces. In this work, the influence of the electrical properties on heat transfer across metal/doped semiconductor junctions is…

Journal of Applied Physics, 2026, 139 (2), ⟨10.1063/5.0303997⟩. ⟨hal-05407095v2⟩

Communication dans un congrès

A HCN terahertz molecular laser pumped by a QCL

Alexandra Khabbaz, Roland Teissier, Gael Mouret, Jean-François Lampin

In this communication we show for the first time that the optical pumping of the HCN molecule allows THz generation. The pumping source is a quantum cascade laser with a wavelength around 14 μm. THz lasing is achieved on nine different transitions from 0.27 to 0.97 THz.

50th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2025), Aug 2025, Helsinki, Finland. pp.1-2, ⟨10.1109/IRMMW-THz61557.2025.11320050⟩. ⟨hal-05572107⟩

HDR

[HDR] Investigation of Electrode–Electrolyte Interfaces for Electrochemical Energy Storage Applications, [HDR] Étude des interfaces électrode-électrolyte pour les applications de stockage électrochimique de l'énergie

Wan-Yu Tsai

My HDR manuscript, titled “Investigation of Electrode–Electrolyte Interfaces for Electrochemical Energy Storage Applications,” summarizes my research over the past ten years on understanding electrode/electrolyte interfaces in supercapacitors and solid-state batteries using microscopic techniques., Mon manuscrit HDR, intitulé « Étude des interfaces électrode-électrolyte pour les applications de stockage électrochimique de l’énergie », résume mes recherches menées au cours des dix dernières années sur la compréhension des interfaces électrode/électrolyte dans les supercondensateurs et les…

Physics [physics]. Université de Lille, 2026. ⟨tel-05438552⟩

Article dans une revue

Unsupervised local learning based on voltage-dependent synaptic plasticity for resistive and ferroelectric synapses

Nikhil Garg, Ismael Balafrej, Joao Henrique Quintino Palhares, Laura Bégon-Lours, Davide Florini, Donato Francesco Falcone, Tommaso Stecconi, Valeria Bragaglia, Bert Jan Offrein, Jean-Michel Portal, Damien Querlioz, Yann Beilliard, Dominique Drouin, Fabien Alibart

The deployment of AI on edge computing devices faces significant challenges related to energy consumption and functionality. These devices could greatly benefit from brain-inspired learning mechanisms, allowing for real-time adaptation while using low-power. In-memory computing with nanoscale…

Communications Materials, 2026, 7, pp.19. ⟨10.1038/s43246-025-01033-5⟩. ⟨hal-05480282⟩

Article dans une revue

Kinematic and power analysis of a flapping-wing micro air vehicle using a Bond Graph approach

L Doan, E Cattan, S Grondel

Abstract Over the past few decades, the remarkable flight capabilities of insects have inspired extensive research into the development of flapping-wing micro air vehicles (FWMAVs). One of the primary challenges in this endeavor lies in navigating the vast spectrum of insect-inspired design options…

Engineering Research Express, 2026, 8 (1), pp.015518. ⟨10.1088/2631-8695/ae31d4⟩. ⟨hal-05473395⟩

Article dans une revue

On-chip topological leaky-wave antenna for full-space terahertz wireless connectivity

Wenhao Wang, Yi Ji Tan, Pascal Szriftgiser, Guillaume Ducournau, Ranjan Singh

The rise of topological valley photonics heralds a new era in photonic integrated circuits featuring low-loss, compact designs with robust light transport through sharp corners. However, most demonstrations of valley photonic devices only focus on the robust waveguiding of light with suppressed…

Nature Photonics, 2026, ⟨10.1038/s41566-025-01825-8⟩. ⟨hal-05473436⟩

Article dans une revue

Spectral colour changes: a promising parameter for smart flax dew retting monitoring solutions

Suvajit Mukherjee, Dmitry Galinousky, Anne- Sophie Blervacq, Lionel Buchaillot, Steve Arscott, Sébastien Grec

Natural fibres from plants such as flax (Linum usitatissimum) are gaining interest as possible green replacements of synthetic fibres to reduce textile pollution footprints. However, the extraction-facilitating process of bast fibres from the flax stem, i.e. dew retting, is still empirically…

Computers and Electronics in Agriculture, 2026, 243, pp.111407. ⟨10.1016/j.compag.2026.111407⟩. ⟨hal-05451451⟩

Article dans une revue

On the importance of Ni–Au–Ga interdiffusion in the formation of a Ni–Au/p-GaN ohmic contact

Jules Duraz, Hassen Souissi, Maksym Gromovyi, David Troadec, Téo Baptiste, Géraldine Hallais, Nathaniel Findling, Phuong Vuong, Rajat Gujrati, Thi May Tran, Jean-Paul Salvestrini, Maria Tchernycheva, Suresh Sundaram, Abdallah Ougazzaden, Gilles Patriarche, Sophie Bouchoule

High-resolution transmission electron microscopy (TEM) coupled to energy dispersive X-ray spectroscopy (EDX) is used to clarify the exact role of Ni-Au-Ga interdiffusion mechanisms taking place during rapid thermal annealing under an oxygen atmosphere of a Ni-Au/p-GaN contact. It is shown that…

Journal of Applied Physics, 2026, 139 (2), pp.025102. ⟨10.1063/5.0295857⟩. ⟨hal-05473565v2⟩