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Affichage de 11 à 20 sur 16220

Article dans une revue

AlGaN Back-Barrier Integration for Trap Reduction in Buffer-Free GaN HEMTs on SiC

François Grandpierron, Elodie Carneiro, Lyes Ben-Hammou, Anders Lundskog, Jui-Che Chang, Jr-Tai Chen, Farid Medjdoub

This work investigates the impact of incorporating an AlGaN back barrier (BB) in buffer-free AlGaN/GaN high electron mobility transistors (HEMTs) on SiC. Both devices use an AlN nucleation layer (NL) for vertical isolation, while the modified structure introduces an Al0.2Ga0.8N BB beneath the GaN...

APL Electronic Devices, 2026, 2 (1), pp.016129. ⟨10.1063/5.0323419⟩. ⟨hal-05548105⟩

Pré-publication, Document de travail

Bottom gated in-plane InSb nanostructures on GaAs(111)B grown by selective area epitaxy

Clément Barbot, Christophe Coinon, Maxime Berthe, Yves Deblock, Qianqian Lan, Etienne Okada, L. Thomas, Pierre Capiod, Coline Demoncheaux, Rafal E Dunin-Borkowski, Philipp Ebert, Bruno Grandidier, Ludovic Desplanque

This work presents a method of achieving high-quality in-plane InSb nanowires on a highly mismatched GaAs (111)B substrate through the combination of atomic hydrogen-assisted selective area molecular beam epitaxy and extreme Sb-rich conditions. By inserting an InGaP barrier layer on top of the...

2026. ⟨hal-05547559⟩

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

Sparse Temporal AutoEncoder for ECG Anomaly Detection

Radia Daci, Abdelmalik Taleb-Ahmed, Luigi Patrono, Cosimo Distante

<div><p>Electrocardiogram (ECG) analysis is a fundamental tool for diagnosing various cardiac conditions; however, accurately distinguishing between normal and abnormal ECG signals remains challenging due to high inter-individual variability and the inherent complexity of ECG waveforms...

Sensors, 2026, 26, 18 p., 1589. ⟨10.3390/s26051589⟩. ⟨hal-05571937⟩

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

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

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

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

Optimisation of a non contact coil / magnet actuator: geometry, nonlinearities and thermal heating

Marguerite de La Bigne, Eric Cattan, Sofiane Ghenna, Sébastien Grondel, Olivier Thomas

This article presents the optimisation of an electromagnetic actuator composed of a toroidal coil and a cylindrical magnet positioned along the coil’s axis that may be used for non-contact measurement of excitation of structures, for vibration testing, electromagnetic shunts or energy harvesting....

Journal of Sound and Vibration, 2026, pp.119783. ⟨10.1016/j.jsv.2026.119783⟩. ⟨hal-05561932⟩

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⟩