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Affichage de 761 à 770 sur 16474

Article dans une revue

In situ Investigation of 1T′/1H Phase Transition in Colloidal WS₂ Monolayers

Dario Mastrippolito, Ashkan Shahmanesh, Mariarosa Cavallo, Erwan Bossavit, Iman Laqchaa El Abed, Corentin Dabard, Shalini Singh, Mathieu Silly, Francesco Capitani, Nemanja Peric, Louis Biadala, Andrea Zitolo, José Avila, Francesco Carlà, Cesare Tresca, Emmanuel Lhuillier, Benoit Mahler, Debora Pierucci

Controlling the crystal phase of two-dimensional transition metal dichalcogenides (TMDs) is essential for tailoring their electronic and optical properties. Among the polymorphs of WS₂, the metastable 1T′ phase exhibits semimetallic or narrow-bandgap character and hosts quantum functionalities…

Nanoscale, 2025, ⟨10.1039/D5NR03092G⟩. ⟨hal-05329170⟩

Article dans une revue

Enhanced near-infrared organic photodetectors leveraging core–shell nanotripods

Kaiwen Zheng, Baozhong Deng, Nan Chen, Clemence Chinaud-Chaix, Mona Tréguer-Delapierre, B. Grandidier, Renaud Bachelot, Tao Xu, Jianhua Zhang, Furong Zhu

Near-infrared (NIR) photodetectors are essential for diverse applications, including medical diagnostics, optical communication, and bioimaging. Traditional photodetectors, typically made from silicon and III–V semiconductors, struggle with large-area devices on precured or flexible substrates due…

ACS Applied Materials & Interfaces, 2025, 17 (23), pp.34304-34316. ⟨10.1021/acsami.5c02476⟩. ⟨hal-05119320⟩

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⟩

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⟩

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⟩

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

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⟩

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, 2025, 42 (1), pp.e70075. ⟨10.1002/btpr.70075⟩. ⟨hal-05318221⟩

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⟩