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Article dans une revue

Quantization of Acoustic Modes in Dumbbell Nanoparticles

Zuyuan Wang, Hojin Kim, Maria Secchi, Maurizio Montagna, Eric Furst, Bahram Djafari-Rouhani, George Fytas

The vibrational eigenmodes of dumbbell-shaped polystyrene nanoparticles are recorded by Brillouin light spectroscopy (BLS), and the full experimental spectra are calculated theoretically. Different from spheres with a degeneracy of (2l + 1), with l being the angular momentum quantum number, the...

Physical Review Letters, 2022, 128 (4), pp.048003. ⟨10.1103/PhysRevLett.128.048003⟩. ⟨hal-03596987⟩

Article dans une revue

[Review] Intelligent on-demand design of phononic metamaterials

Yabin Jin, Liangshu He, Zhihui Wen, Bohayra Mortazavi, Hongwei Guo, Daniel Torrent, Bahram Djafari-Rouhani, Timon Rabczuk, Xiaoying Zhuang, Yan Li

With the growing interest in the field of artificial materials, more advanced and sophisticated functionalities are required from phononic crystals and acoustic metamaterials. This implies a high computational effort and cost, and still the efficiency of the designs may be not sufficient. With the...

Nanophotonics, 2022, 11 (3), pp.439-460. ⟨10.1515/nanoph-2021-0639⟩. ⟨hal-03565642⟩

Article dans une revue

A cost-effective technology to improve power performance of nanoribbons GaN HEMTs

Ali Soltani, Brahim Benbakhti, J.-C. Gerbedoen, Abdelkrim Khediri, Maher, Hassan, Jean-Paul Salvestrini, Abdallah Ougazzaden, Nour Eddine Bourzgui, Hassan Ali Barkad

A cost-effective fabrication process is developed to improve the power performance of AlGaN/GaN High Electron Mobility Transistors (HEMTs). This process uses nitrogen ion (N+) implantation to form multiple parallel NanoRibbons on AlGaN/GaN heterostructures, with thin buffer layer (AlGaN/GaN NR-...

Applied Physics Letters, 2022, 120 (4), pp.042102. ⟨10.1063/5.0080240⟩. ⟨hal-03544158⟩

Article dans une revue

Photocatalytic Performance of Perovskite and Metal–Organic Framework Hybrid Material for the Reduction of N2 to Ammonia

Masoumeh Chamack, Madjid Ifires, Sayed Ali Akbar Razavi, Ali Morsali, Ahmed Addad, Afsanehsadat Larimi, Sabine Szunerits, Rabah Boukherroub

The orthorhombic phase of KNbO3 perovskite has been applied for nitrogen (N-2) photoreduction to ammonia (NH3). However, this material suffers from a low surface area and low ammonia production efficiency under UV light irradiation. To eliminate these barriers, we used a metal-organic framework (...

Inorganic Chemistry, 2022, 61 (3), pp.1735-1744. ⟨10.1021/acs.inorgchem.1c03622⟩. ⟨hal-03549843⟩

Communication dans un congrès

[Invited] Phononic crystal for dynamic viscosity determination

Laurent Carpentier, Abdellatif Gueddida, Mansour Zaremanesh, Hamed Gharibi, Ali Bahrami, Ahmed Mehaney, Ralf Lucklum, Bahram Djafari-Rouhani, Yan Pennec

We propose a two-dimensional triangular lattice solid/fluid phononic crystals (PnC) for the determination of the acoustic properties and in particular dynamic viscosity of a fluid. We show that this device is very sensitive to the acoustic parameters of the liquid, such as density or sound velocity...

Photonic and Phononic Properties of Engineered Nanostructures XII, SPIE Photonics West OPTO Conference, Jan 2022, San Francisco, United States. pp.45, ⟨10.1117/12.2615965⟩. ⟨hal-03692873⟩

Article dans une revue

Au-assisted polymerization of conductive poly(N-phenylglycine) as high-performance positive electrodes for asymmetric supercapacitors

Min Li, Yunyun Luo, Chen Jia, Mimi Huang, Mingzhi Yu, Guoxi Luo, Libo Zhao, Rabah Boukherroub, Zhuangde Jiang

Abstract Herein, a novel conductive poly(N-phenylglycine) (PNPG) polymer was successfully prepared, by in situ electrochemical polymerization method (+0.75 V versus Ag/AgCl) for 10 min, on flexible stainless-steel plate coated with a thin Au film (Au/SS) to serve as a binder-free pseudocapacitive...

Nanotechnology, 2022, 33 (4), pp.045602. ⟨10.1088/1361-6528/ac1fb3⟩. ⟨hal-03457822⟩

Thèse

Élaboration et caractérisation de couches minces de LiNbO3 obtenues par pulvérisation cathodique et ablation laser pulsée, Elaboration and characterisation of LiNbO3 thin films obtained by sputtering and pulsed laser deposition

Laura Sauze

Atteindre le plein potentiel de la 5ème génération d’applications mobiles (5G) nécessite de pousser les performances des filtres acoustiques radiofréquences au-delà de leurs limites actuelles. Les filtres radiofréquences hautes performances existants (supérieurs à 2,5 GHz) sont réalisés à base de..., Reaching the full potential of the 5th Generation of mobile applications (5G) requires pushing the performances of acoustic radio-frequency filters beyond their current limits. Current high-performances radio-frequency filters (above 2.5 GHz) are based on aluminium nitride. Their bandwidth is...

Electronique. Université Polytechnique Hauts-de-France, 2022. Français. ⟨NNT : 2022UPHF0003⟩. ⟨tel-03654042⟩

Article dans une revue

Over-wavelength pitch sized diffraction gratings for augmented reality applications

Valter Drazic, Oksana Shramkova, Bobin Varghese, Laurent Blondé, Vincent Brac de La Perrière, Jesse Schiffler, Patrice Twardowski, Sylvain Lecler, Benjamin Walter, Estelle Mairiaux, Fuanki Bavedila, Marc Faucher, Valérie Allié

Waveguide based optical combiners for augmented reality (AR) glasses are integrating several surface relief gratings (SRG) whose pitch sizes can be as small as 200 nm for the blue wavelength. All SRG components exploit the first diffraction order to couple in and out or to deviate the light. We...

Optics Express, 2022, 30 (2), pp.1293-1303. ⟨10.1364/OE.446077⟩. ⟨hal-03561356⟩

Communication dans un congrès

[Invited] Microwave Sensing in the Modern Society

Kamel Haddadi

RF and microwave techniques and instrumentations have been widely described in the literature to address electrical or/and dielectric characterization of devices and materials. Thanks to its high potential, microwave nondestructive testing and evaluation (MNDT&E) has attracted industry in a...

2022 IEEE Radio and Wireless Symposium, RWW2022, Jan 2022, Las Vegas, United States. ⟨hal-03700596⟩

Article dans une revue

Efficient detoxification of Cr(VI)-containing effluents by sequential adsorption and reduction using a novel cysteine-doped PANi@faujasite composite: Experimental study supported by advanced statistical physics prediction

Mohamed Laabd, Abdelaziz Imgharn, Abdelghani Hsini, Yassine Naciri, Mohamed Mobarak, Sabine Szunerits, Rabah Boukherroub, Abdallah Albourine

Nowadays, the global spreading of hazardous heavy metals becomes a top-priority environmental challenge, owing to its serious detrimental health outcomes. Herein, a novel cysteine-doped polyaniline@faujasite hybrid composite (Cys-PANi@FAU-50) was synthesized via a facile in-situ polymerization...

Journal of Hazardous Materials, 2022, 422, pp.126857. ⟨10.1016/j.jhazmat.2021.126857⟩. ⟨hal-03457788⟩