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Affichage de 3451 à 3460 sur 16462

Chapitre d'ouvrage

20 - Omnidirectional Bandgaps and Selective Transmission in Layered Photonic Crystals

Abdellatif Akjouj, El Houssaine El Boudouti, L. Dobrzynski, Bahram Djafari-Rouhani

It has been shown that a one-dimensional periodic structure such as a layered photonic crystal can exhibit the property of omnidirectional reflection, which means that any incident wave launched from the vacuum (or from a substrate) will undergo a total reflection at the layered photonic crystal…

Photonics, Part Three: Photonic Materials, Elsevier, pp.569-586, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00031-9⟩. ⟨hal-03360011⟩

Chapitre d'ouvrage

22 - Superluminal, Negative Delay Times and Selective Transmission in Isotropic-Anisotropic Layered Media

El Houssaine El Boudouti, Bahram Djafari-Rouhani, Abdellatif Akjouj, L. Dobrzynski

In this chapter, we investigate the possibility of superluminal and negative delay times for electromagnetic wave propagation in a linear and passive periodic structure consisting of alternating isotropic and anisotropic media. These phenomena are due to the birefringence of the anisotropic layers…

Photonics, Part Three: Photonic Materials, Elsevier, pp.623-655, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00033-2⟩. ⟨hal-03360015⟩

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⟩

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⟩

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⟩

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⟩

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

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⟩

Article dans une revue

High-Q silicon nitride drum resonators strongly coupled to gates

Xin Zhou, Srisaran Venkatachalam, Ronghua Zhou, Hao Xu, Alok Pokharel, Andrew Fefferman, Mohammed Zaknoune, Eddy Collin

Silicon nitride (SiN) mechanical resonators with high quality mechanical properties are attractive for fundamental research and applications. However, it is challenging to maintain these mechanical properties while achieving strong coupling to an electrical circuit for efficient on-chip integration…

Nano Letters, 2021, 21 (13), pp.5738-5744. ⟨10.1021/acs.nanolett.1c01477⟩. ⟨hal-03263144⟩

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⟩