Publicaciones

• Article dans une revue

Exceptional Points and Skin Modes in Non-Hermitian Metabeams

Runcheng Cai, Yabin Jin, Yong Li, Timon Rabczuk, Yan Pennec, Bahram Djafari-Rouhani, Xiaoying Zhuang

We present a non-Hermitian metabeam exhibiting an exceptional point (EP) induced by enforcing parity-time (PT) symmetry through applied external forces. The EP is formed by the hybridization of two flexural wave modes and its output displacement is enhanced by attaching two pillars on top of the...

Physical Review Applied, 2022, 18 (1), pp.014067. ⟨10.1103/PhysRevApplied.18.014067⟩. ⟨hal-03741975⟩

• Article dans une revue

Qualitative analysis of a 3D multiphysics model for nonlinear ultrasonics and vibration induced heating at closed defects

Kevin Truyaert, Vladislav Aleshin, Koen van den Abeele

Upon exciting a material using elastic waves, the locally induced deformation at the interfaces of internally closed defects may cause nonlinear wave mechanics and dynamics in the form of clapping and friction. As a result, both phenomena instigate spectral broadening of the excitation spectrum as...

Research in Nondestructive Evaluation, 2022, 33 (1), pp.17-32. ⟨10.1080/09349847.2022.2049408⟩. ⟨hal-03747601⟩

• Communication dans un congrès

Compact Multi-Band Flexible Antenna for ISM, WLAN, Wi-Fi, and 5G sub-6-GHz Applications

Syed Muhammad Rizvi Jarchavi, Mohsin Iqbal, Mariana Dalarsson, Mohammad Alibakhshikenari, Iyad Dayoub

Design and analysis of a compact multi-band flexible antenna are presented here. The antenna is designed using the flexible substrate material Rogers 5880 and has a compact size of 18mm×18mm×0.254mm. The coplanar waveguide (CPW) fed radiator consists of a rectangular-shaped patch modified using a...

2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC), May 2022, Gran Canaria, Spain. pp.1-3, ⟨10.23919/AT-AP-RASC54737.2022.9814285⟩. ⟨hal-03737945⟩

• Article dans une revue

Bragg's additivity rule and core and bond model studied by real-time TDDFT electronic stopping simulations: The case of water vapor

Bin Gu, Daniel Muñoz-Santiburcio, Fabiana da Pieve, Emilio Artacho, Jorge Kohanoff, Fabrizio Cleri

The electronic stopping power (Se) of water vapor (H2O), hydrogen (H2) and oxygen (O2) gases for protons in a broad range of energies, centered in the Bragg peak, was calculated using real-time time-dependent density functional theory (rt-TDDFT) simulations with Gaussian basis sets. This was done...

Radiation Physics and Chemistry, 2022, 193, pp.109961. ⟨10.1016/j.radphyschem.2022.109961⟩. ⟨hal-03612745⟩

• Communication dans un congrès

Analysis of morphological and physicochemical changes in space-weathered hydrated silicates by visible/IR spectroscopy and electron transmission microscopy

S. Rubino, H. Leroux, A. Aleon-Toppani, C. Lantz, D. Baklouti, Z. Djouadi, David Troadec, F. Borondics, R. Brunetto

85th Annual Meeting of The Meteoritical Society 2022, Aug 2022, Glasgow, United Kingdom. ⟨hal-03774022⟩

• Article dans une revue

Perception of loudness changes induced by a phononic crystal in specific frequency bands

Arthur Paté, Nicolas Côté, Charles Croënne, Jerome O. Vasseur, Anne-Christine Hladky-Hennion

To study the influence of classical phononic crystal (PC) structures on the acoustical characteristics of a sound source, a combined acoustics/perceptual analysis is conducted on a PC specially designed to exhibit several spectral and wave vector properties in different audible frequency ranges....

Acta Acustica, 2022, 6, pp.42. ⟨10.1051/aacus/2022037⟩. ⟨hal-03789110⟩

• Article dans une revue

Precoded Large Scale Multi‐User‐MIMO System Using Likelihood Ascent Search for Signal Detection

Kalapraveen Bagadi, Chinthaginjala V. Ravikumar, Mohammad Alibakhshikenari, Nagaraj Challa, A. Rajesh, Sonia Aïssa, Iyad Dayoub, Francisco Falcone, Ernesto Limiti

Multiple antennas at each User Equipment (UE) and/or thousands of antennas at the Base Station comprise the extremely spectrum efficient large scale Multi-User Multiple Input Multiple Output (MU-MIMO) system (BS). Due to space constraints, the closely spaced numerous antennas at each UE may cause...

Radio Science, 2022, 57 (12), pp.e2022RS007573. ⟨10.1029/2022RS007573⟩. ⟨hal-03890650⟩

• Article dans une revue

De la théorie à la pratique dans l’enseignement du traitement du signal : initiation à la recherche

Lynda Chehami, Nikolay Smagin, Jamal Assaad, Pierre Campistron, Frédéric Jenot, Emmanuel Moulin

Le débat entre la théorie et la pratique dans l'enseignement sur l'importance de chacun comme base de la formation en Master existe depuis plusieurs années. Ce lien est souvent sous-évaluée et on a tendance à oublier que de la théorie naît la pratique et que la pratique est basée sur la...

Journal sur l'enseignement des sciences et technologies de l'information et des systèmes, 2022, 21, pp.2042. ⟨10.1051/j3ea/20222042⟩. ⟨hal-04167135⟩

• Article dans une revue

Pairing cells of different sizes in a microfluidic device for immunological synapse monitoring

Faruk Azam Shaik, Clara Lewuillon, Aurélie Guillemette, Bahram Ahmadian, Carine Brinster, Bruno Quesnel, Dominique Collard, Yasmine Touil, Loïc Lemonnier, Mehmet Tarhan

Analyzing cell–cell interaction is essential to investigate how immune cells function. Elegant designs have been demonstrated to study lymphocytes and their interaction partners. However, these devices have been targeting cells of similar dimensions. T lymphocytes are smaller, more deformable, and...

Lab on a Chip, 2022, 22 (5), pp.908-920. ⟨10.1039/d1lc01156a⟩. ⟨hal-03565627⟩

• Article dans une revue

Optomechanical Hot-Spots in Metallic Nanorod–Polymer Nanocomposites

Thomas Vasileiadis, Adnane Noual, Yuchen Wang, Bartlomiej Graczykowski, Bahram Djafari-Rouhani, Shu Yang, George Fytas

Plasmonic coupling between adjacent metallic nanoparticles can be exploited for acousto-plasmonics, single-molecule sensing, and photochemistry. Light absorption or electron probes can be used to study plasmons and their interactions, but their use is challenging for disordered systems and colloids...

ACS Nano, 2022, 16 (12), pp.20419-20429. ⟨10.1021/acsnano.2c06673⟩. ⟨hal-03896196⟩