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Affichage de 3361 à 3370 sur 16289

Chapitre d'ouvrage

15 - Silicon Nanowires and Nanopillars for Photovoltaic

Yan Pennec, Abdellatif Akjouj, Gaëtan Lévêque, Bahram Djafari-Rouhani, L. Dobrzynski

We present simulations on both the optical properties and the efficiency of nanowires (NWs), nanopillars (NPs) and nanocones (NCs) silicon-based solar cells, together with measurements on their associated optical absorption. We address the calculation using Green's function formalism and…

Photonics, Part 2: Photonic Circuits, Elsevier, pp.393-418, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00025-3⟩. ⟨hal-03359906⟩

Article dans une revue

Large-area femtosecond laser milling of silicon employing trench analysis

Arun Bhaskar, Justine Philippe, Flavie Braud, Etienne Okada, Vanessa Avramovic, Jean-François Robillard, Cédric Durand, Daniel Gloria, Christophe Gaquière, Emmanuel Dubois

A femtosecond laser is a powerful tool for micromachining of silicon. In this work, large-area laser ablation of crystalline silicon is comprehensively studied using a laser source of pulse width 300 fs at two wavelengths of 343 nm and 1030 nm. We develop a unique approach to gain insight into the…

Optics and Laser Technology, 2021, 138, pp.106866. ⟨10.1016/j.optlastec.2020.106866⟩. ⟨hal-03091197⟩

Chapitre d'ouvrage

16 - Transmission Line Photonic Crystals: A Comparison of Green's Formalism, Lumped Circuit Element Model, and Finite Element Method

Abdelkrim Talbi, El Houssaine El Boudouti, Cécile Ghouila-Houri, Abdellatif Akjouj, Bahram Djafari-Rouhani, L. Dobrzynski

This chapter presents the modeling, using Advanced Design System (ADS) from Keysight Technologies and Finite Element Method (FEM) based on Comsol Multiphysics tools, of photonic circuits. We particularly report in this chapter a confirmation of the results reported in Chapters 9, 10, and 11…

Photonics, Part 2: Photonic Circuits, Elsevier, pp.419-435, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00026-5⟩. ⟨hal-03359907⟩

Communication dans un congrès

LSTM-based system for multiple obstacle detection using ultra-wide band radar

Amira Mimouna, Anouar Ben Khalifa, Ihsen Alouani, Abdelmalik Taleb-Ahmed, Atika Rivenq, Najoua Ben Amara

Autonomous vehicles present a promising opportunity in the future of transportation systems by providing road safety. As significant progress has been made in the automatic environment perception, the detection of road obstacles remains a major challenge. Thus, to achieve reliable obstacle…

13th International Conference on Agents and Artificial Intelligence, ICAART 2021, Feb 2021, Vienna (Online Streaming), Austria. pp.418-425, ⟨10.5220/0010386904180425⟩. ⟨hal-03195216⟩

Article dans une revue

Dielectric Passivation and Edge Effects in Planar GaN Schottky Barrier Diodes

B. Orfao, B. Vasallo, S. Perez, J. Mateos, D. Moro-Melgar, M. Zaknoune, T. Gonzalez

The influence of passivation on the edge effects (EEs) present in the capacitance-voltage ( C- V) characteristics of GaN Schottky barrier diodes (SBDs) with realistic geometry is analyzed by means of Monte Carlo simulations. The enhancement of the performance of SBDs as frequency multipliers is…

IEEE Transactions on Electron Devices, 2021, 68 (9), pp.4296-4301. ⟨10.1109/TED.2021.3097703⟩. ⟨hal-03508422⟩

Article dans une revue

Multi-Terminal Memristive Devices Enabling Tunable Synaptic Plasticity in Neuromorphic Hardware: A Mini-Review

Yann Beilliard, Fabien Alibart

Neuromorphic computing based on spiking neural networks has the potential to significantly improve on-line learning capabilities and energy efficiency of artificial intelligence, specially for edge computing. Recent progress in computational neuroscience have demonstrated the importance of…

Frontiers in Nanotechnology, 2021, 3, pp.779070. ⟨10.3389/fnano.2021.779070⟩. ⟨hal-04157007⟩

Article dans une revue

Asymmetric micro-supercapacitors based on electrodeposited Ruo2 and sputtered VN films

Bouchra Asbani, Kevin Robert, Pascal Roussel, Thierry Brousse, Christophe Lethien

Research on micro-supercapacitors remains one of the most important activities in the area of electrochemical energy storage for powering smart and miniaturized electronic devices. Here we design an asymmetric micro-supercapacitor (A-MSC) combining sputtered vanadium nitride film (VN) and…

Energy Storage Materials, 2021, 37, pp.207-214. ⟨10.1016/j.ensm.2021.02.006⟩. ⟨hal-03198793⟩

Communication dans un congrès

Alpha-stable model for interference in IoT networks

Laurent Clavier, Troels Pedersen, Ignacio Rodriguez Larrad, Malcolm Egan

The increase in connected device, linked with the evolution of IoT and cellular networks with 5G and towards 6G makes crucial the limitation of the interference impact. Devices in networks (like LoRa, SigFox and even WiFi) or in different networks are not necessarily coordinated to optimize their…

International Conference on Antenna Measurements and Applications, CAMA 2021, Nov 2021, Antibes Juan-les-Pins, France. pp.575-578, ⟨10.1109/CAMA49227.2021.9703600⟩. ⟨hal-03582453⟩

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

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⟩