Publications

• 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⟩

• 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⟩

• Article dans une revue

Silicon Tile-Stacking Technology for Low-Loss Sub-THz Waveguides and 3D Packaging

Arthur L. Alves, Cybelle Belem Goncalves, Frederic Gianesello, Guillaume Ducournau, Emmanuel Dubois

This paper presents the design, fabrication, and experimental characterization of low-loss, G-band (140–220 GHz) H-plane S-bend rectangular waveguides fabricated via a multi-layer stack of laser-micromachined silicon tiles. To overcome sub-millimeter manufacturing challenges, an ultrashort-pulse…

IEEE Transactions on Components, Packaging and Manufacturing Technology, In press. ⟨hal-05782059⟩

• Article dans une revue

Combined Influence of Precursor Source and Solvent Type on Microstructural and Optical Properties of Spin-Coated ZnO Thin Films

Alphonse Déssoudji Gboglo, Mazabalo Baneto, Ognanmi Ako, Abdoul-Razak Ali-Tagba, Bruno Grandidier, Kekeli N’konou

The present work investigates the combined effect of precursor source and solvent on the structural, morphological, and optical properties of ZnO thin films prepared by the spin-coating technique. Three precursor sources (zinc acetate dihydrate, zinc chloride, and zinc nitrate hexahydrate) and four…

Surfaces, 2026, 9 (2), pp.50. ⟨10.3390/surfaces9020050⟩. ⟨hal-05684448⟩

• Article dans une revue

Harnessing normal-shear coupling in metabarriers for deep sub-wavelength underwater noise control

Vinícius F Dal Poggetto, Marco Miniaci

Anthropogenic underwater noise poses a significant threat to marine ecosystems, disrupting key biological functions. Common mitigation strategies include enclosing noise sources within acoustic barriers. Current designs include locally resonant absorbers, which offer narrow-band performance, and…

npj Acoustics, 2026, 2 (1), pp.20. ⟨10.1038/s44384-026-00056-7⟩. ⟨hal-05675214⟩

• Article dans une revue

Real-Time Evolution of the Mechanical Properties of Flax Stems During Post-Harvest Dew Retting: Towards Objective Retting Assessment

Ali Reda, Lionel Buchaillot, Steve Arscott

Post-harvest field dew retting is a critical stage in flax fibre production because it facilitates the separation of fibre bundles from the surrounding stem tissues. In current agricultural practice, the optimum retting stop-point is still assessed largely using empirical criteria, motivating the…

Agriculture, 2026, 16 (18), pp.1940. ⟨10.3390/agriculture16181940⟩. ⟨hal-05742620⟩

• Chapitre d'ouvrage

Path eigenfunction localization and sensing

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

Leonard Dobrzynski. Sensing, Elsevier, pp.39-70, 2026, Interface Transmission Tutorial Book Series, Sensing Long-Lived Resonances, 978-0-443-32944-9. ⟨10.1016/B978-0-44-332944-9.00013-X⟩. ⟨hal-05569940⟩

• 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

Steerable Thin-Film Electrode Array for Cochlear Implantation: Design and Development for Future Atraumatic Insertion

Ahmad Itawi, Bacem Zribi, Prabhakar Sidambaram, Thanh Hang Tran, Guillaume Tourrel, Renato Torres, Sofiane Ghenna, Sébastien Grondel, Yann Nguyen, Cedric Plesse, Eric Cattan

During cochlear implant surgery, standard electrode arrays are inserted into the scala tympani to stimulate the spiral ganglion cells and rehabilitate hearing in deaf patients. However, conventional electrode arrays' stiffness and passive nature lead to potential trauma or incomplete insertion…

Sensors and Actuators Reports, 2026, 11, pp.100447. ⟨10.1016/j.snr.2026.100447⟩. ⟨hal-05488634⟩

• Article dans une revue

Inkjet-Printing with Micrometer Resolution on Paper for Flexible RF Applications

Fawzi Bouakkaz, Riccardo Sargeni, Sylvie Lepilliet, Simon Skrzypczak, Emiliano Pallecchi, Gianluca Fiori, Henri Happy

Geometry is a critical factor in radio frequency design that directly affects the performance and efficiency of RF components and systems. The characteristic impedance and the propagation constant of transmission lines are affected by the conductor width, spacing, and the dielectric properties. In…

IEEE Journal On Flexible Electronics, 2026, pp.1-1. ⟨10.1109/JFLEX.2026.3668145⟩. ⟨hal-05554156⟩