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Affichage de 321 à 330 sur 16563

  • 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⟩

  • Article dans une revue

Comment on “Influence of layer thickness on time domain Brillouin scattering oscillation amplitude in multilayer films” [J. Appl. Phys. 136, 225302 (2024)]

Simon Ayrinhac, Arnaud Devos, Benoît Rufflé, Marie Foret

Picosecond acoustics allows for the probing of multilayered nanometric structures, with applications in various fields of fundamental research. In a recent study, Zhang et al.1 have reexamined the optical cavity effect that impacts time-domain Brillouin acoustic spectroscopy (TDBS) in such systems.…

Journal of Applied Physics, 2026, 139, pp.016101. ⟨10.1063/5.0284277⟩. ⟨hal-05472974⟩

  • Communication dans un congrès

Single-Path Precision: Differentiable Bit-Width & Numeric-Format Learning for FPGA-Efficient Neural Networks

Emanuel Trabes, Kawthar Dellel, Carlos Valderrama, Abdelmalik Taleb-Ahmed

Quantization in neural networks typically requires early commitment to a fixed numerical format—either fixed-point or floating-point—and a limited set of word sizes supported by the target hardware. This rigid choice often compromises either model accuracy or hardware efficiency. While FPGAs offer…

23rd International Conference on Image Analysis and Processing, Sep 2025, Rome, Italy. pp.424-435, ⟨10.1007/978-3-032-10192-1_35⟩. ⟨hal-05700748⟩

  • Communication dans un congrès

DeeCLIP: A Robust and Generalizable Transformer-Based Framework for Detecting AI-Generated Images

Mamadou Keita, Wassim Hamidouche, Hessen Bougueffa Eutamene, Abdelmalik Taleb-Ahmed, Abdenour Hadid

This paper introduces DeeCLIP, a novel framework for detecting AI-generated images using CLIP-ViT and fusion learning. Despite significant advancements in generative models capable of creating highly photorealistic images, existing detection methods often struggle to generalize across different…

Advanced Concepts for Intelligent Vision Systems (ACIVS 2025), Jun 2025, Tokyo, Japan. pp.146-158, ⟨10.1007/978-3-032-07343-3_12⟩. ⟨hal-05473197⟩

  • Communication dans un congrès

Beyond Linear Bottlenecks: Spline-Based Knowledge Distillation for Culturally Diverse Art Style Classification

Abdellah Zakaria Sellam, Salah Eddine Bekhouche, Cosimo Distante, Abdelmalik Taleb-Ahmed

Art style classification remains a formidable challenge in computational aesthetics due to the scarcity of expertly labeled datasets and the intricate, often nonlinear interplay of stylistic elements. While recent dual-teacher self-supervised frameworks reduce reliance on labeled data, their linear…

Image Analysis and Processing – ICIAP 2025, Sep 2025, Rome, Italy. pp.401-412, ⟨10.1007/978-3-032-10192-1_33⟩. ⟨hal-05700776⟩

  • Communication dans un congrès

Towards an industrial lead-free ferroelectric KNN thin film for piezoelectric MEMS actuators

Lisa Legardinier, Brenda Carreno Jimenez, Sophie Ollivier, Valérie Demange, Christel Dieppedale, Florian Dupont, Denis Remiens, Brice Gautier, Maryline Guilloux-Viry, Gwenael Le Rhun, Grégoire Magagnin, Ngoc Kim Thanh Bui, Karim Dogheche

Despite the RoHS (Restriction of Hazardous Substances) directives regarding the use of lead in many electronic applications, introduced 20 years ago, lead zirconate titanate (PZT) remains the most widely used piezoelectric material in actuator devices in the absence of a suitable alternative at the…

ECAPD 2026, Jun 2026, Oulu, Finland. ⟨cea-05705327⟩

  • Chapitre d'ouvrage

Introduction to "Electromagnetic Interference Shielding Materials

Jovana Prekodravac Filipovic, Malgorzata Celuch, Kamel Haddadi, Dragana Marinković

The general availability of cellphones, wearable technology, Wi-Fi, microwaves, and various smart gadgets has become fundamental to contemporary existence. This book examines (nano)materials, promoting advancements in shielding materials. It examines the features, behavior, properties, and spectra…

Introduction to "Electromagnetic Interference Shielding Materials". Electromagnetic Interference Shielding Materials, Elsevier, pp.1-2, 2026, ⟨10.1016/B978-0-443-36630-7.00009-0⟩. ⟨hal-05719728⟩

  • Article dans une revue

A versatile microfluidic electrochemical platform for diffusion-controlled, quasi-one-dimensional interfacial studies

Shreyanshu Agrawal, Alexander Saperstein, Farzam Zoueshtiagh, Ranga Narayanan, Kirk Ziegler

A quasi-one-dimensional microfluidic electrochemical platform suppresses convection through microscale confinement and eliminates electric field singularities through a dielectric overhang that shields the top surface of the electrode.

Lab on a Chip, 2026, ⟨10.1039/d6lc00427j⟩. ⟨hal-05718932⟩