Publicaciones

Affichage de 2331 à 2340 sur 16058

ART

Colloidal II–VI—Epitaxial III–V heterostructure: A strategy to expand InGaAs spectral response

Adrien Khalili, Claire Abadie, Tung Huu Dang, Audrey Chu, Eva Izquierdo, Corentin Dabard, Charlie Gréboval, Mariarosa Cavallo, Huichen Zhang, Stefano Pierini, Yoann Prado, Xiang Zhen Xu, Sandrine Ithurria, Grégory Vincent, Christophe Coinon, L. Desplanque, Emmanuel Lhuillier

For short wave infrared (SWIR) sensing, InGaAs is the leading technology combining high carrier mobility, high homogeneity and complete control over n-top doping. In the meanwhile, numerous alternative materials have tried to compete with InGaAs. Among them, colloidal nanocrystals with narrow band...

Applied Physics Letters, 2022, 120 (5), pp.051101. ⟨10.1063/5.0076708⟩. ⟨hal-03549261⟩

ART

Real-time multimode dynamics of terahertz quantum cascade lasers via intracavity self-detection: observation of self mode-locked population pulsations

Hua Li, Wenjian Wan, Ziping Li, J. Cao, Sylvie Lepilliet, Jean-Francois Lampin, Kevin Froberger, Lorenzo Columbo, Massimo Brambilla, S Barbieri

Mode-locking operation and multimode instabilities in Terahertz (THz) quantum cascade lasers (QCLs) have been intensively investigated during the last decade. These studies have unveiled a rich phenomenology, owing to the unique properties of these lasers, in particular their ultrafast gain medium...

Optics Express, 2022, 30 (3), pp.3215-3229. ⟨10.1364/OE.444295⟩. ⟨hal-03596273⟩

UNDEFINED

Bubbles and liquid films resisting drainage, evaporation and nuclei-induced bursting

Aymeric Roux, Alexis Duchesne, Michael Baudoin

Soap bubbles are by essence fragile and ephemeral. Depending on their composition and environ- ment, bubble bursting can be triggered by gravity-induced drainage and/or the evaporation of the liquid and/or the presence of nuclei. They can also shrink due to the diffusion of the inner gas in the...

2022. ⟨hal-03181877v2⟩

ART

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⟩

ART

[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⟩

ART

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⟩

ART

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⟩

COMM

[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⟩

ART

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⟩

THESE

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⟩