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Affichage de 3131 à 3140 sur 16133

Article dans une revue

Growth temperature effect on physical and mechanical properties of nitrogen rich InN epilayers

Z. Benzarti, T. Sekrafi, A. Khalfallah, Zahia Bougrioua, D. Vignaud, M. Evaristo, A. Cavaleiro

A set of N-polar InN epilayers has been grown at different temperatures by plasma-assisted molecular beam epitaxy (PA-MBE) on GaN/AlN/Al2O3(0001) templates. The purpose is to understand how the variation of crucial factor, such as the temperature, impacts the growth process and the resulting…

Journal of Alloys and Compounds, 2021, 885, pp.160951. ⟨10.1016/j.jallcom.2021.160951⟩. ⟨hal-03542616⟩

Article dans une revue

A generalized deep learning-based framework for assistance to the human malaria diagnosis from microscopic images

Ziheng Yang, Halim Benhabiles, Karim Hammoudi, Feryal Windal, Ruiwen He, Dominique Collard

Malaria is an infectious disease caused by Plasmodium parasites and is potentially human life-threatening. Children under 5 years old are the most vulnerable group with approximately one death every two minutes, accounting for more than 65% of all malaria deaths. The World Health Organization (WHO…

Neural Computing and Applications, 2021, ⟨10.1007/s00521-021-06604-4⟩. ⟨hal-03457872⟩

Communication dans un congrès

An advanced ageing methodology for robustness assessment of normally-off AlGaN/GaN HEMT

F. Albany, A. Curutchet, N. Labat, F. Lecourt, E. Walasiak, H. Maher, Y. Cordier, N. Defrance, N. Malbert

The semi-on-state reliability of normally-off AlGaN/GaN high electron mobility transistor fabricated by fluorine ion plasma implantation technology is reported, focusing on an advanced dc step-stress methodology. By inserting a non-stressful fixed-bias step between each stress step, a reliable in-…

15th European Microwave Integrated Circuits Conference, EuMIC 2020, Jan 2021, Utrecht, Netherlands. 237-240, https://ieeexplore.ieee.org/abstract/document/9337362. ⟨hal-03362260⟩

Article dans une revue

Optomechanic Coupling in Ag Polymer Nanocomposite Films

Adnane Noual, Eunsoo Kang, Tanmoy Maji, Manos Gkikas, Bahram Djafari-Rouhani, George Fytas

Particle vibrational spectroscopy has emerged as a new tool for the measurement of elasticity, glass transition, and interactions at a nanoscale. For colloid-based materials, however, the weakly localized particle resonances in a fluid or solid medium renders their detection difficult. The strong…

Journal of Physical Chemistry C, 2021, 125 (27), pp.14854-14864. ⟨10.1021/acs.jpcc.1c04549⟩. ⟨hal-03538884⟩

Article dans une revue

Modeling and experimental analysis of the mass loading effect on micro-ionic polymer actuators using step response identification

Iman Dadras, Sofiane Ghenna, Sébastien Grondel, Eric Cattan, Jaan Raik, Alvo Aabloo, Saoni Banerji

This paper presents a linear electrochemomechanical model for microscale ionic actuators. A frequency-domain approach is used to facilitate model interpretation, simplify model application, and accelerate the generation of actuator-specific models. A system comprising a micro PEDOT:PSS/PEO actuator…

Journal of Microelectromechanical Systems, 2021, 30 (2), pp.243-252. ⟨10.1109/JMEMS.2021.3060897⟩. ⟨hal-03162798⟩

Communication dans un congrès

Bowl-shaped ZnO ultrasonic transducer for photoacoustic/ultrasonic multimode microscopy

J. Zhang, D. Zhao, D. Li, F. Tian, Wei-Jiang Xu, X. Wu

A bowl-shaped ultrasonic transducer is proposed for photoacoustic/ultrasonic multimode microscopy. The transducer uses zinc oxide (ZnO) as the piezoelectric material, which has a better electromechanical coefficient than flexible PVDF polymer and ensures the detection sensitivity. The ZnO film is…

2021 IEEE International Ultrasonics Symposium (IUS), Sep 2021, Xi'an, China. ⟨10.1109/IUS52206.2021.9593419⟩. ⟨hal-03541939⟩

Article dans une revue

Development of broadband high-frequency piezoelectric micromachined ultrasonic transducer array

Xu-Bo Wang, Le-Ming He, You-Cao Ma, Wen-Juan Liu, Wei-Jiang Xu, Jun-Yan Ren, Antoine Riaud, Jia Zhou

Piezoelectric micromachined ultrasonic transducers (PMUT) are promising elements to fabricate a two-dimensional (2D) array with a pitch small enough (approximately half wavelength) to form and receive arbitrary acoustic beams for medical imaging. However, PMUT arrays have so far failed to combine…

Sensors, 2021, 21 (5), pp.1823. ⟨10.3390/s21051823⟩. ⟨hal-03260141⟩

Communication dans un congrès

Design of a solid-fluid acoustic sensor based on Fano resonances

I. Quotane, M. Amrani, Cécile Ghouila-Houri, E.H. El Boudouti, L. Krutyanskiy, Bogdan Piwakowski, Philippe Pernod, Abdelkrim Talbi, Bahram Djafari-Rouhani

The achievement of an efficient acoustic biosensor based on one dimensional solid-liquid phononic crystals supporting bound states in the continuum (BICs) and Fano resonances is reported herein. The structure used in this work is made of solid-liquid-solid triple layer embedded in water. The main…

2021 Symposium on Design, Test, Integration and Packaging of MEMS and MOEMS, DTIP 2021, Aug 2021, Paris, France. ⟨10.1109/DTIP54218.2021.9568664⟩. ⟨hal-03508194⟩

Communication dans un congrès

Surface modes in plasmonic stubbed structures

Y. Rezzouk, M. Amrani, S. Khattou, E.H. El Boudouti, Bahram Djafari-Rouhani

We present an analytical and numerical study about the existence of surface localized modes, known as Tamm states, in a one-dimensional (1D) comb-like plasmonic band gap structure. Surface plasmon polaritons (SPPs) waveguides with coupled resonators have been widely studied in recent years, because…

4th International Conference on Materials and Environmental Science, ICMES 2020, Nov 2020, Oujda, Morocco. pp.7752-7755, ⟨10.1016/j.matpr.2021.03.438⟩. ⟨hal-03362272⟩

Communication dans un congrès

Plasmonic demultiplexer based on induced transparency resonances: Analytical and numerical study

E.H. El Boudouti, Bahram Djafari-Rouhani, M. Amrani, S. Khattou, A. Noual

We study both analytically and numerically the possibility to realize a simple plasmonic Y-shaped demultiplexer made of an input line and two output lines. Each line consisting of a metal-insulator-metal (MIM) waveguide contains a specific resonator made of two stubs grafted at a given position…

2nd International Conference on Electronic Engineering and Renewable Energy, ICEERE 2020, Apr 2020, Saidia, Morocco. pp.239-247, ⟨10.1007/978-981-15-6259-4_24⟩. ⟨hal-03362261⟩