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Affichage de 461 à 470 sur 16170

Article dans une revue

Measurement of surface acoustic wave attenuation in aluminum using transverse acoustic field

Dame Fall, Marc Duquennoy, Nikolay Smagin, Zakariae Oumekloul, Mohammadi Ouaftouh

This paper deals with the estimation of the attenuation of surface acoustic waves (SAWs). The proposed solution consists in measuring the displacement field transversely to the axis of propagation of the acoustic beam at several distances from the transducer, considering the entire field. Unlike...

AIP Advances, 2025, 15 (6), pp.0650026. ⟨10.1063/5.0260423⟩. ⟨hal-05150833⟩

Article dans une revue

Uncoordinated RIS-Aided Uplink IoT Cell-Free Massive MIMO-NOMA Systems

Mohamad Ousseily, Joumana Farah, Matthieu Crussière, Joseph Doumit, Charbel Abdel Nour, Eric Pierre Simon

Cell-free massive MIMO (CF-mMIMO) has emerged as a promising architecture for beyond 5G networks, offering enhanced coverage and spectral efficiency through distributed antenna arrays. This paper proposes a novel framework integrating reconfigurable intelligent surfaces (RIS) and non-orthogonal...

IEEE Open Journal of the Communications Society, In press, ⟨10.1109/OJCOMS.2025.3623368⟩. ⟨hal-05329424⟩

Article dans une revue

Surface oxidation and oxygen incorporation in ScAlN films grown by molecular beam epitaxy

Valentina Gallardo-Mödinger, Frédéric Georgi, Xavier Wallart, Ileana Florea, Philippe Vennéguès, Yvon Cordier, Maxime Hugues

Recently, there has been much interest in the ScAlN alloy, thanks to its various potential applications in high-frequency high-power, acoustoelectric, and ferroelectric devices. Nonetheless, these applications could be impaired by the presence of oxygen in the alloy and the formation of a surface...

Journal of Applied Physics, 2025, 138 (24), pp.245701. ⟨10.1063/5.0303670⟩. ⟨hal-05440883⟩

Communication dans un congrès

Description de la posture et des vibrations transmises aux doigts du musicien lors de la pratique de la guitare électrique

Delphine Chadefaux, Romain Caron, Nathan Forier-David, Arthur Paté

La compréhension de la pratique musicale est essentielle tant dans des objectifs de facture instrumentale que d’apprentissage du geste ou encore de perception musicale. Dans ce cadre, de nombreuses études se sont intéressées à l’instrument et au son rayonné puis perçu par le musicien et l’auditoire...

CFA 2025 - 17e Congrès Français d'Acoustique, Société Française d'Acoustique (SFA), Apr 2025, Paris, France. ⟨hal-05364648⟩

Communication dans un congrès

Pinces acoustiques hautes fréquences pour la manipulation d'objets micrométriques

Jean-Louis Thomas, Michael Baudoin, Roudy Al Sahely

Les pinces acoustiques sont l’équivalent des pinces optiques, elles utilisent un faisceau focalisé pour piéger en trois dimension un objet à l’aide de la pression de radiation. Ces dernières ont permis de faire des manipulation d’objets micro-métrique avec une précision nano-métrique. Néanmoins une...

CFA 2025 - 17e Congrès Français d'Acoustique, Société Française d'Acoustique (SFA), Apr 2025, Paris, France. ⟨hal-05365443⟩

Article dans une revue

Rethinking Attention Gated with Hybrid Dual Pyramid Transformer-CNN for Generalized Segmentation in Medical Imaging

Fares Bougourzi, Fadi Dornaika, Abdelmalik Taleb-Ahmed, Vinh Truong Hoang

Inspired by the success of Transformers in Computer vision, Transformers have been widely investigated for medical imaging segmentation. However, most of Transformer architecture are using the recent transformer architectures as encoder or as parallel encoder with the CNN encoder. In this paper, we...

Lecture Notes in Computer Science, 2025, Pattern Recognition 27th International Conference, ICPR 2024, Kolkata, India, December 1–5, 2024, Proceedings, Part IV, 15304, pp.243-258. ⟨10.1007/978-3-031-78128-5_16⟩. ⟨hal-04850794⟩

Article dans une revue

Dynamic switching of ferrocene and plasmonic interactions in Au/self-assembled monolayer/single Ag nanocube molecular junctions

Mariem Ben Youssef, Peeranuch Poungsripong, Hugo Bidotti, Halidou Abdoul-Yasset, Didier Gigmes, Olivier Margeat, Beniamino Sciacca, Judikaël Le Rouzo, David Duché, Dominique Vuillaume

We report the redox switching of ferrocene moieties embedded in a double tunnel barrier plasmonic cavity fabricated from a click-chemistry self-assembled monolayers of ferrocenyl-alkylthiol on ultra flat gold surfaces, connected to a single poly(vinylpyrrolidone) capped silver nanocube, AgNC, which...

Journal of Physical Chemistry C, 2025, 129, pp.7855-7867. ⟨10.1021/acs.jpcc.4c07890⟩. ⟨hal-04766943v2⟩

Communication dans un congrès

Elastic wave propagation in diatom frustules

Chiara Gazzola, Xin Zhou, David Troadec, Marco Miniaci

Diatoms are microscopic algae encapsulated inside a silica inorganic exoskeleton called frustule featuring a complex quasi-regular and hierarchical distribution of micro- and nano-scaled pores. The mechanical and optical behaviors of these biological systems have already been investigated in...

CFA 2025 - 17e Congrès Français d'Acoustique, Société Française d'Acoustique (SFA), Apr 2025, Paris, France. ⟨hal-05366196⟩

Article dans une revue

Identification of the differential and synergic lipotoxic patterns of oleic acid, palmitic acid, and their mixture in 3D HepG2/C3A tissue using liver‐on‐chip technology

Lisa Morisseau, Valérie Pawlowski, Valérie Plaisance, Mathilde Lucas, Cécile Legallais, Yasuyuki Sakai, Amar Abderrahmani, Rachid Jellali, Eric Leclerc

The metabolic dysfunction‐associated steatotic liver disease (MASLD, previously formerly known as non‐alcoholic fatty liver disease, NAFLD) is rapidly expanding worldwide in parrallel with the obesity pandemic. Dietary fatty acids including oleic (OA) and palmitic acids (PA) contribute to the...

Biotechnology Progress, In press, ⟨10.1002/btpr.70075⟩. ⟨hal-05318221⟩

Article dans une revue

A Sub-400-nW Real-Time Event-Driven Spectrogram Extraction Unit in 28-nm FD-SOI CMOS for Keyword Spotting Application

Soufiane Mourrane, Benoit Larras, Sylvain Clerc, Andreia Cathelin, Antoine Frappé

Considering the power-hungry nature of speech processing, a keyword spotting (KWS) unit, used to detect multiple spoken words, is often integrated as a front-end layer. KWS systems are always active, and thus, it is extremely important to optimize the devoted power budget. In this context, this...

IEEE Journal of Solid-State Circuits, In press, ⟨10.1109/JSSC.2024.3475948⟩. ⟨hal-04793373⟩