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Pré-publication, Document de travail

Coherent electronic transport in HgTe nanostructures grown by selective area epitaxy

Nicolas Chaize, Xavier Baudry, Yves Deblock, Maxime Berthe, Bruno Grandidier, Ludovic Desplanque, Philippe Ballet, Hermann Sellier

This paper reports on the quantum coherent properties of in-plane HgTe nanodevices obtained by selective area growth (SAG) on CdTe substrates using a silicon dioxide mask. Low-temperature magneto-transport measurements were performed on devices with a ring geometry to extract the phase coherence...

2026. ⟨hal-05546433⟩

Article dans une revue

Controllable Reconfiguration of DNA Nanostar Hydrogel Networks via Sticky-End Ligation

Audrey Cochard, Lucas Pinède, Yannick Tauran, Arnaud Brioude, Beomjoon Kim, Alexandre Baccouche, Vincent Salles, Anthony Genot, Soo Hyeon Kim

DNA nanostar hydrogels hold great promise as biomaterials, but their mechanical properties and nuclease susceptibility limit their use. Here, we propose ligation of nanostar sticky ends as a strategy to fundamentally transform the mechanical and dynamic properties of DNA nanostar hydrogels and...

Applied Materials Today, 2026, 49, pp.103169. ⟨10.1016/j.apmt.2026.103169⟩. ⟨hal-05552199⟩

Article dans une revue

Rapid characterisation of millimetre-tall vertically aligned carbon nanotube arrays: growth optimisation by tuning the catalyst film thickness

Xinghai Zhao, Johannes Eduard Stubbe, Jin Chuen Kenneth Ho, Putu Andhita Dananjaya, Wen Siang Lew, Philippe Coquet, Beng Kang Tay

This study aims to establish a quick and sustainable approach for optimising the growth of millimetre-tall vertically aligned carbon nanotube (VACNT) arrays through simple catalyst tuning. To achieve this swiftly, a rapid and handy characterisation protocol is essential. Herein, we propose and...

Applied Surface Science, 2026, 722, pp.165504. ⟨10.1016/j.apsusc.2025.165504⟩. ⟨hal-05440821⟩

Article dans une revue

Direct impedance eduction of acoustic liners in multimodal ducts with shear flows

Jinyue Yang, Thomas Humbert, Joachim Golliard, Gwénaël Gabard

Impedance eduction of acoustic liners with flow is usually performed under the assumption of a uniform mean flow and in the presence of an incident plane wave. However, recent studies have demonstrated that shear flow significantly influences the propagation of sound waves and their interaction...

Journal of Sound and Vibration, 2026, 626, pp.119635. ⟨10.1016/j.jsv.2025.119635⟩. ⟨hal-05454484⟩

Article dans une revue

Wide-Angle Reflective Terahertz Beam Steering Metasurface Based on Cross-Polarization Conversion

Mengyao Li, Zhonghua Gu, Cheemalamarri Hemanth Kumar, Nanhan Liu, Frédéric Dutin, Pascal Szriftgiser, Guillaume Ducournau, Prakash Pitchappa

The terahertz (THz) frequency range is considered an important spectrum for future six-generation communication. However, the high propagation losses and poor penetration inherent to THz waves restricted its development. Wavefront manipulation techniques for beam steering to redirect the...

IEEE Transactions on Terahertz Science and Technology, 2026, 16 (3), pp.307-317. ⟨10.1109/TTHZ.2025.3626144⟩. ⟨hal-05548954⟩

Article dans une revue

Dynamics of the harmonic acoustic pneumatic source for active control of time-varying tonal noise

Alexandre Schiavini, Philippe Micheau, Pierre Grandjean, Gwénaël Gabard, Thomas Humbert

The Harmonic Acoustic Pneumatic Source (HAPS), a mechanical airflow modulator, is a promising alternative to loudspeakers as secondary sources for the active control of harmonic noise, thanks to its ability to generate high sound pressure levels and to precisely control signal frequency, phase, and...

Applied Acoustics, 2026, 245, pp.111219. ⟨10.1016/j.apacoust.2025.111219⟩. ⟨hal-05441126⟩

Thèse

Microcavités pour composants RF-SOI-CMOS ultra-rapides pour application 5G et delà, Microcavities for ultra-fast RF-SOI-CMOS components for 5G applications and beyond

Daniel Gheysens

Le développement des standards de communication mobile impose des exigences toujours plus strictes aux commutateurs radiofréquence (RF), notamment en termes de bande passante, pertes, linéarité et bruit. La technologie RF SOI-CMOS partiellement déplétée s’est imposée comme la solution dominante..., The development of mobile communication standards imposes increasingly stringent requirements on radio frequency (RF) switches, particularly in terms of bandwidth, losses, linearity, and noise. Partially depleted SOI-CMOS RF technology has emerged as the dominant solution thanks to an optimal...

Physique [physics]. Université de Lille, 2026. Français. ⟨NNT : ⟩. ⟨tel-05525162⟩

Article dans une revue

Metasurfaces with Enhanced Optomechanical Coupling through the Colocalization of Plasmonic and Acoustic Fields

Anuj Kumar Dhiman, Piotr Graczyk, Hritika Dongre, Karol Załęski, Bahram Djafari-Rouhani, Bartlomiej Graczykowski, Thomas Vasileiadis

<div xmlns="http://www.tei-c.org/ns/1.0"><p>Plasmons can enhance inelastic light scattering by terahertz molecular vibrations, enabling single-molecule detectors, molecular optomechanics in nanocavities, and vibrational strong coupling phenomena. Yet plasmonenhanced...

ACS Nano, 2026, 20, pp.6655 - 6665. ⟨10.1021/acsnano.5c15197⟩. ⟨hal-05553805⟩

Article dans une revue

Quantum Coherent Transport of 1D Ballistic States in Second-Order Topological Insulator Bi4⁢Br4

Jules Lefeuvre, Masaru Kobayashi, Gilles Patriarche, Nathaniel Findling, David Troadec, Meydi Ferrier, Sophie Guéron, Hélène Bouchiat, Takao Sasagawa, Richard Deblock

We investigate quantum transport in micrometer-sized single crystals of Bi$_4$Br$_4$, a material predicted to be a second-order topological insulator. 1D topological states with long phase coherence times are revealed via the modulation of quantum interferences with magnetic field and gate voltage...

Physical Review X, 2026, 16 (1), pp.011031. ⟨10.1103/2bqq-t7ml⟩. ⟨hal-04970280⟩

Article dans une revue

Inflammatory stimulus enhances synaptic material uptake by adult APP microglia in a microfluidic neuron–microglia co-culture model

Dolores Siedlecki-Wullich, Anne-Marie Ayral, Lukas Iohan, Célia Lemeu, Valérie Buiche, Karine Blary, Julien Chapuis, Fanny Eysert, Delphine Beury, Myriam Delacre, David Hot, Takahiro Masuda, Klaus-Peter Knobeloch, Marco Prinz, Jean-Charles Lambert, Devrim Kilinc

Microglia play a critical role in synapse remodeling and neuroinflammation, both of which are dysregulated in Alzheimer’s disease (AD). However, most in vitro models rely on neonatal or immortalized microglia, limiting their relevance to adult pathophysiological context. Here, we present a...

Journal of Neuroinflammation, 2026, 23 (1), pp.75. ⟨10.1186/s12974-026-03748-9⟩. ⟨hal-05552197⟩