Publications

• Article dans une revue

0.53 mΩ.cm 2 /592 V High Breakdown Voltage GaN-on-Sapphire Schottky Diodes Without Edge Termination

Hugo Bouillaud, Beatriz Orfao, Etienne Okada, Yannick Roelens, Malek Zegaoui, Mohammed Zaknoune

In this letter, we report high-performance Pt/GaN quasi-vertical Schottky barrier diodes on sapphire substrate. With a 5 μm drift layer and a highly controlled fabrication process, the devices demonstrate an extremely low on-resistance of 0.53 mΩ.cm² while exhibiting a high breakdown voltage of 592…

IEEE Electron Device Letters, 2026, pp.1-1. ⟨10.1109/LED.2026.3652934⟩. ⟨hal-05484994⟩

• Article dans une revue

Ultralow‐Dispersion Silicon THz Photonic Crystal Interconnects for Multichannel Datalinks

Nikhil Navaratna, Thomas Caiwei Tan, Pascal Szriftgiser, Guillaume Ducournau, Ranjan Singh

All-Silicon (Si) Terahertz (THz) interconnects are a key platform for next-generation on-chip communication, leveraging broadband photonics to connect reconfigurable electronics. Yet their potential remains largely unrealized, due to low reported data rates and a lack of systematic insight into the…

Advanced Materials, 2026, 8 p. ⟨10.1002/adma.74150⟩. ⟨hal-05705648⟩

• Article dans une revue

Far-Field Terahertz Spectroscopy of a Subwavelength Single Planar Meta-Atom

Surya Revanth Ayyagari, Simonas Indrišiūnas, Guillaume Ducournau, Vytautas Janonis, Irmantas Kašalynas

Accurate measurements of light-matter interactions at subwavelength scales are critical for advancing nanophotonic and quantum optical technologies. In this paper, we present the far-field terahertz (THz) spectroscopy of a single planar meta-atom of subwavelength dimensions embedded within a square…

Applied Sciences, 2026, 16 (10), pp.4608. ⟨10.3390/app16104608⟩. ⟨hal-05663529⟩

• Pré-publication, Document de travail

SPARK-IL: Spectral Retrieval-Augmented RAG for Knowledge-driven Deepfake Detection via Incremental Learning

Hessen Bougueffa Eutamene, Abdellah Zakaria Sellam, Abdelmalik Taleb-Ahmed, Abdenour Hadid

Detecting AI-generated images remains a significant challenge because detectors trained on specific generators often fail to generalize to unseen models; however, while pixel-level artifacts vary across models, frequency-domain signatures exhibit greater consistency, providing a promising…

2026. ⟨hal-05596260⟩

• Chapitre d'ouvrage

Fundamentals of magnetic field sensing using ferromagnetic thin films and elastic waveguides

Aurélien Mazzamurro, Abdelkrim Talbi, Olivier Bou Matar, Othmane Marbouh, Mohamed Boutghatin, Mohammed Moutaouekkil, Gaétan Sanchez, Noura Ezzahni, El Houssaine El Boudouti, Yannick Dusch, Nicolas Tiercelin, Philippe Pernod

This chapter presents a comprehensive review of magnetoelastic coupling phenomena and their application in acoustic wave devices for magnetic field sensing. Starting from the fundamentals of piezoelectric and magnetostrictive interactions, it examines surface acoustic waves (SAW) and guided…

Sensing, Interface Transmission Tutorial Book Series, Elsevier, pp.357-403, 2026, ⟨10.1016/B978-0-44-332944-9.00026-8⟩. ⟨hal-05576867⟩

• Chapitre d'ouvrage

One closed loop and two infinite leads

Abdellatif Akjouj, Eman Abdel-Ghaffar, Housni Al-Wahsh, Madiha Amrani, Leonard Dobrzyński

Leonard Dobrzynski. Sensing Long-Lived Resonances, Elsevier, pp.145-162, 2026, Interface Transmission Tutorial Book Series, Sensing Long-Lived Resonances, 978-0-443-32944-9. ⟨10.1016/B978-0-44-332944-9.00018-9⟩. ⟨hal-05569975⟩

• Chapitre d'ouvrage

On-off tunable generic system

Eman Abdel-Ghaffar, Housni Al-Wahsh, Abdellatif Akjouj, Madiha Amrani, Leonard Dobrzyński

Leonard Dobrzynski. Sensing Long-Lived Resonances, Elsevier, pp.129-144, 2026, Interface Transmission Tutorial Book Series, Sensing Long-Lived Resonances, 978-0-443-32944-9. ⟨10.1016/B978-0-44-332944-9.00017-7⟩. ⟨hal-05569965⟩

• Article dans une revue

0.2-<i>μ</i>m InP/GaAsSb DHBT Transferred on Si-HR With 28 mW/<i>μ</i>m² at 94 GHz

Abdelmalek Zemour, Malek Zegaoui, Christophe Coinon, Yannick Roelens, Etienne Okada, Pascal Chevalier, Mohammed Zaknoune

We present 94 GHz large-signal load-pull measurements of a transferred InP/GaAsSb double heterojunction bipolar transistor fabricated on a high-resistivity silicon (Si-HR) substrate. The characterized device features an emitter area of 0.19 × 8.9 µm 2 . Biased for highest power, an output power of…

• Article dans une revue

Plant- and Microalgae-Based Biotechnological Strategies for Affordable and Non-Invasive Delivery of Antidiabetic Peptides

Thibault Boscart, Alexandre Barras, Valérie Plaisance, Valérie Pawlowski, Emerson Giovanelli, Muriel Bardor, Christophe D’hulst, Amar Abderrahmani

The prevalence of diabetes and its worldwide co-morbidities is escalating. Therefore, the number of users of therapeutic peptides including insulin analogs and glucagon-like peptide 1 receptor agonists (GLP-1RAs), will unavoidably increase in the coming years. However, access to these two…

Pharmaceutics, 2026, 18 (2), pp.223. ⟨10.3390/pharmaceutics18020223⟩. ⟨hal-05553665⟩

• Article dans une revue

Channel Emulator-Based Experimental Measurements for Spectrum Sensing in IoT Networks

Julio Manco-Vasquez, Iyad Dayoub

The rapid expansion of Internet of Things (IoT) applications requires reliable evaluation frameworks capable of reproducing realistic radio-frequency (RF) environments. One of the main challenges is the limited availability of spectrum caused by the growing number of connected devices. This paper…

IEEE Sensors Letters, In press, pp.1-4. ⟨10.1109/LSENS.2026.3715793⟩. ⟨hal-05719164⟩