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Affichage de 1281 à 1290 sur 16261

Article dans une revue

Three‐dimensional multiscale assembly of phyllosilicates, organics, and carbonates in small Ryugu fragments

Zelia Dionnet, Stefano Rubino, Alice Aléon-Toppani, Rosario Brunetto, Akira Tsuchiyama, Cateline Lantz, Zahia Djouadi, Donia Baklouti, Tomoki Nakamura, Ferenc Borondics, Christophe Sandt, Eva Héripré, David Troadec, Obadias Mivumbi, Jérome Aléon, Theo Ternier, Megumi Matsumoto, Kana Amano, Tomoyo Morita, Hisayoshi Yurimoto, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta, Hiroshi Naraoka, Kanako Sakamoto, Shogo Tachibana, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe, Tatsuaki Okada, Tomohiro Usui, Makoto Yoshikawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Satoru Nakazawa, Seiichiro Watanabe, Yuichi Tsuda

We report μm‐scale nondestructive infrared (IR) hyperspectral results (IR computed tomography, IR‐CT) in 3‐D and IR surface imaging, IR‐S) in 2‐D, at SOLEIL) combined with X‐ray nano‐computed tomography analyses (at SPring‐8) performed on eight small Ryugu fragments extracted from mm‐sized grains…

Meteoritics and Planetary Science, 2024, 59 (8), pp.1859-1876. ⟨10.1111/maps.14068⟩. ⟨hal-04243762⟩

Article dans une revue

Ab Initio Study of the Crystalline Structure of HgS under Low and High Pressure

Ahmed Amine Aidouni, Abdelkader Aissat, Mounir Ould-Mohamed, Mohamed El Amine Benamar, Samuel Dupont, Jean Pierre Vilcot

This study analyzes the lattice dynamics of HgS under various pressures using ab initio self-consistent calculations based on the plane-wave method (PW) and generalized gradient approximation (GGA). The static study, performed by enthalpy calculations, predicts that the transition from the cinnabar…

Crystals, 2024, 14 (9), pp.780. ⟨10.3390/cryst14090780⟩. ⟨hal-04722216⟩

Article dans une revue

Advances in AI-Generated Images and Videos

Hessen Bougueffa Eutamene, Mamadou Keita, Wassim Hamidouche, Abdelmalik Taleb-Ahmed, Helena Liz-López, Alejandro Martín, David Camacho, Abdenour Hadid

In recent years generative AI models and tools have experienced a significant increase, especially techniques to generate synthetic multimedia content, such as images or videos. These methodologies present a wide range of possibilities; however, they can also present several risks that should be…

International Journal of Interactive Multimedia and Artificial Intelligence, 2024, 9 (1), pp.173-208, 1-36. ⟨10.9781/ijimai.2024.11.003⟩. ⟨hal-04856744⟩

Article dans une revue

Combined Super-Resolution Fluorescence and Coaxial 3-D Scanning Microwave Microscopy: Proof-of-Concept In-Liquid Live-Cell Imaging: Toward a Biological Nano-Radar

Chia-Hung Lee, Kamel Haddadi, Peter Burke

We present a proof-of-concept 3-D scanning microwave microscope based on a miniaturized coaxial probe combined with high-resolution fluorescence microscopy for in-liquid operation and live-cell imaging. The system simulta- neously provides electric (GHz) and optical (super-resolution) imaging of…

IEEE Microwave and Wireless Technology Letters, 2024, pp.1-4. ⟨10.1109/LMWT.2024.3483071⟩. ⟨hal-04815101⟩

Article dans une revue

Simulation and optimization of GaAs1-xPx/Si1-yGey/Ge triple junction solar cells

A. Azzououm, A. Aissat, Jean-Pierre Vilcot

This paper focuses on studying and simulating a GaAs1-xPx/Si1-yGey/Ge triple-junction solar cell structure. First, the strain and the bandgap energy associated to the SiGe layer have been studied. The optimal germanium concentration is 0.88 with a strain around 0.45%. Then, the phosphor…

Journal of Ovonic Research, 2024, 20 (1), pp.75-84. ⟨10.15251/JOR.2024.201.75⟩. ⟨hal-04494462⟩

Article dans une revue

Tilted columnar metal film as transducer of transverse coherent acoustic phonons in picosecond acoustics

A. Chargui, N. Martin, G. Ferro, Arnaud Devos

Picosecond acoustics has been widely used to study thin film elasticity, hypersound attenuation, and adhesion of thin films to substrates. A major limitation of the technique is its restriction to only longitudinal waves. Although work has been reported on the ultrafast generation and detection of…

Applied Physics Letters, 2024, 125 (19), pp.192202. ⟨10.1063/5.0228331⟩. ⟨hal-04774895⟩

Article dans une revue

TileChain: A Blockchain-Based Framework for Security Service Management For Vehicular Communications

Ahmed Didouh, Anthony Bahadir Lopez, Houda Labiod, Yassin El Hillali, Atika Rivenq, Mohammad Abdullah Al Faruque

Vehicular communications have become essential for functional and road safety purposes due to the development of vehicle fleets. However, these communications have made vehicles more vulnerable to cyber-attacks. The security of data exchanges in vehicular networks currently relies on a centralized…

IEEE Transactions on Vehicular Technology, 2024, pp.1-17. ⟨10.1109/TVT.2024.3358784⟩. ⟨hal-04465353⟩

Article dans une revue

Portable Multiplexed System Based AD5933 Impedance analyzer: Towards Multi-Selective Gas recognition

L. Routier, A. Westrelin, A. Cerveaux, P. Foulon, G. Louis, T. Horlac'H, K. Lmimouni, Sébastien Pecqueur, Bilel Hafsi

Advances on System-On-Chip and organic sensors allows the development of miniaturized impedance measurement hardware for gas monitoring in IoT. In this work, we present the development of miniaturized, multiplexed, and connected platform for impedance spectroscopy. Designed for online measurements…

IEEE Sensors Letters, 2024, pp.1-4. ⟨10.1109/LSENS.2024.3415789⟩. ⟨hal-04618374⟩

Article dans une revue

Single-Channel Imaging at Low Sampling Rates

Salah Skitioui, Cyril Decroze, Ettien Kpre, Christophe Gaquière, Okan Yurduseven, Thomas Fromenteze

This study introduces a method for single-channel imaging at low sampling rates, utilizing Frequency-Modulated Continuous Wave radar combined with space-frequency multiplexing. This approach significantly reduces system complexity and data acquisition demands by encoding scene reflectivity into a…

IEEE Antennas and Wireless Propagation Letters, 2024, pp.1-5. ⟨10.1109/LAWP.2024.3409195⟩. ⟨hal-04614410⟩

Article dans une revue

1200-V Fully Vertical GaN-on-Silicon p-i-n Diodes With Avalanche Capability and High On-State Current Above 10 A

Youssef Hamdaoui, Sondre Michler, Adrien Bidaud, Katir Ziouche, Farid Medjdoub

<div xmlns="http://www.tei-c.org/ns/1.0"><p>We report on fully vertical GaN-on-Silicon P-i-N diodes delivering above 1200 V soft breakdown voltage. Temperature dependence measurements indicate avalanche breakdown capability reflecting the high-quality processing and epitaxy…

IEEE Transactions on Electron Devices, 2024, pp.1-6. ⟨10.1109/TED.2024.3496440⟩. ⟨hal-04797737⟩