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Affichage de 811 à 820 sur 16430

  • Communication dans un congrès

Lentille de Luneburg pour les ondes de gravité

Svetlana Kuznetsova, Matteo Mazzotti, Vinicius Fonseca Dal Poggetto, Vincent Pagneux, Miguel Onorato, Marco Miniaci

Dans cet exposé, la focalisation des ondes de surface à l'aide d'une lentille de Luneburg composée de piliers immergés de hauteur uniforme est étudiée numériquement. La conception de cette lentille repose sur la dérivation et la résolution numérique des équations 3D du potentiel de…

CFA 2025 - 17e Congrès Français d'Acoustique, Société Française d'Acoustique (SFA), Apr 2025, Paris, France. ⟨hal-05366167⟩

  • Communication dans un congrès

Design and fabrication of bioinspired selfsimilar and non-self-similar metamaterials

Marco Miniaci

Hierarchical structures with constituents organized across multiple length scales are commonly found in natural materials such as bones, shells, and spider silk. These materials exhibit remarkable quasi-static mechanical properties, including high specific strength, stiffness, and toughness.…

CFA 2025 - 17e Congrès Français d'Acoustique, Société Française d'Acoustique (SFA), Apr 2025, Paris, France. ⟨hal-05366170⟩

  • Communication dans un congrès

Ultra-thin normal-shear-coupled meta-barrier for low-frequency underwater sound insulation

Marco Miniaci, Vinicius Fonseca Dal Poggetto

Underwater noise pollution from anthropogenic activities, such as offshore oil and gas exploration, poses significant threats to marine life. A common mitigation strategy involves enclosing primary noise sources within physical barriers to reduce noise levels in surrounding environments. Underwater…

CFA 2025 - 17e Congrès Français d'Acoustique, Société Française d'Acoustique (SFA), Apr 2025, Paris, France. ⟨hal-05366168⟩

  • Communication dans un congrès

Integrated Optoelectronic Mixer with a Micromachined Silicon Coplanar Probe for Wideband On-Wafer Testing of Millimeter-Wave and THz Components

S. Islam, L. Kherouz, Victor Merupo, L. Frein, S. Bouhier, Flavie Braud, Christophe Boyaval, Christophe Coinon, J.-F. Lampin, Y Deblock, Sophie Eliet, E. Okada, Sylvie Lepilliet, Q. Fornasiero, G. Di Gioia, G. Loas, S. Arscott, E Peytavit

We present the design and fabrication of a wideband signal analysis probe system for on-wafer testing millimeter-wave and THz electronic components. This probe system is based on the development of an optoelectronic mixer based on a low-temperature-grown GaAs microcavity photoconductor integrated…

2025 50th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Aug 2025, Helsinki, Finland. pp.1-2, ⟨10.1109/irmmw-thz61557.2025.11319740⟩. ⟨hal-05489566⟩

  • Communication dans un congrès

Ondes élastiques topologiquement guidées pour l'haptique de surface

Massaï Hatoumva, Charles Croënne, Bertrand Dubus, Arthur Paté, M. Miniaci, Florian Allein, Frédéric Giraud

<div><p>Les cristaux phononiques topologiques marquent une avancée majeure pour le guidage et le contrôle des ondes élastiques en permettant la synthèse des modes localisés spécifiques (états de bords). Si les propriétés de ces modes font actuellement l'objet de nombreuses études,…

17e Congrès Français d'Acoustique, Société Française d'Acoustique, Apr 2025, Paris, France. ⟨hal-05362771⟩

  • Proceedings/Recueil des communications

Recueil de communications école d'hiver 2025 GDR ARCHI-META - DN METACMED

Marco Miniaci, Giuseppe Rosi, Nicolas Auffray, Cédric Bellis, Christelle Combescure, Justin Dirrenberger, Kerem Ege, Muamer Kadic, Fabrice Lemoult, Bruno Morvan, Vincent Pagneux, Julien Poittevin, Martin Poncelet

The last 20 years have seen a remarkable growth in scientific interest in (elastic and mechanical) metamaterials. One of the reasons for this is the great potential that this subject area has in itself as a “link between different disciplines”, particularly acoustics and solid mechanics. In…

Ecole d'hiver GDR ARCHI META - DN METACMED, Feb 2025, Lille, France. 2025. ⟨hal-05081631⟩

  • Article dans une revue

Nonlinear modeling of AlN/GaN HEMT accounting for self-biasing effect during RF step stress: analysis and hard-SOA

Nasri Said, Damien Saugnon, K. Harrouche, F Medjdoub, N. Labat, N. Malbert, Jean-Guy Tartarin

In this study, we investigate the non-linear (NL) behavior of AlN/GaN HEMT technologies under gain compression when submitted to 10 GHz single-tone RF-step stress, which is crucial for millimetre-wave power application robustness. We evaluate AlN/GaN transistors, targeting high-power amplifiers…

Microelectronics Reliability, 2025, 169, pp.115742. ⟨10.1016/j.microrel.2025.115742⟩. ⟨hal-05065556⟩

  • Article dans une revue

Toward Smart Probes for mmW On-Wafer Measurements: Advanced Packaging Using Laser Micromachining of Glass

Maya Alawar, Victor Fiorese, Sylvie Lépilliet, Daniel Gloria, Guillaume Ducournau, Emmanuel Dubois

This article introduces the development of groundsignal-ground (GSG) probes for on-wafer active measurements, fabricated using femtosecond laser micromachining with a resolution between 5 and 10 µm. The probes are made from a 100 µm-thick Schott AF32 glass substrate bonded to a 10 µm-thick nickel…

IEEE Transactions on Microwave Theory and Techniques, 2025, 73 (11), pp.8544-8555. ⟨10.1109/TMTT.2025.3595651⟩. ⟨hal-05214588⟩

  • Article dans une revue

Brain‐Inspired Polymer Dendrite Networks for Morphology‐Dependent Computing Hardware

Corentin Scholaert, Yannick Coffinier, Sébastien Pecqueur, Fabien Alibart

Process variation is always a challenge to mitigate in electronics. This especially holds true for organic semiconductors, where reproducibility concerns hinder industrialization. Challenging this concept, it shows AC-electropolymerization to be a powerful platform for the development of morphology…

Advanced Science, 2025, 12 (33), pp.e02291. ⟨10.1002/advs.202502291⟩. ⟨hal-05214086⟩

  • Article dans une revue

A Universal Implementation Approach for Multivalued Logic Gates Based on Negative Transconductance in Series-Connected Two-Dimensional Transistors

Guangchao Zhao, Wanting Wen, Keyi Liao, Philippe Coquet, Xingli Wang, Mingqiang Huang, Beng Kang Tay

Multiple-valued logic (MVL) is highly desired for algebra, logic, and artificial intelligence due to its higher information density. However, its practical adoption has been hindered for decades by extensive hardware requirements. Two-dimensional (2D) materials with exceptional electronic…

ACS Nano, 2025, 19 (27), pp.24961-24971. ⟨10.1021/acsnano.5c04182⟩. ⟨hal-05166793⟩