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Affichage de 3141 à 3150 sur 16104

Article dans une revue

Physics of surface vibrational resonances: Pillared phononic crystals, metamaterials, and metasurfaces

Yabin Jin, Yan Pennec, Bernard Bonello, Hossein Honarvar, L. Dobrzynski, Bahram Djafari-Rouhani, Mahmoud I Hussein

The introduction of engineered resonance phenomena on surfaces has opened a new frontier in surface science and technology. Pillared phononic crystals, metamaterials, and metasurfaces are an emerging class of artificial structured media, featuring surfaces, that consist of pillars–or branching…

Reports on Progress in Physics, 2021, ⟨10.1088/1361-6633/abdab8⟩. ⟨hal-03109885⟩

Article dans une revue

Polarization control of THz emission using spin-reorientation transition in spintronic heterostructure

Dinar Khusyainov, Sergei Ovcharenko, Mikhail Gaponov, Arseniy Buryakov, Alexey Klimov, Nicolas Tiercelin, Philippe Pernod, Vadim Nozdrin, Elena Mishina, Alexander Sigov, Vladimir Preobrazhensky

Polarization of electromagnetic waves plays an extremely important role in interaction of radiation with matter. In particular, interaction of polarized waves with ordered matter strongly depends on orientation and symmetry of vibrations of chemical bonds in crystals. In quantum technologies, the…

Scientific Reports, 2021, 11 (1), pp.697. ⟨10.1038/s41598-020-80781-5⟩. ⟨hal-03110177⟩

Article dans une revue

SiGe HBTs and BiCMOS technology for present and future millimeter-wave system

Thomas Zimmer, Josef Bock, Fred Buchali, Pascal Chevalier, Michael Collisi, Bjorn Debaillie, Marina Deng, Philippe Ferrari, Sebastien Fregonese, Christophe Gaquière, Haitham Ghanem, Horst Hettrich, Alper Karakuzulu, Tim Maiwald, Marc Margalef-Rovira, Caroline Maye, Michael Moller, Anindya Mukherjee, Holger Rucker, Paulius Sakalas, Rolf Schmid, Karina Schneider, Karsten Schuh, Wolfgang Templ, Akshay Visweswaran, Thomas Zwick

This paper gives an overall picture from BiCMOS technologies up to THz systems integration, which were developed in the European Research project TARANTO. The European high performance BiCMOS technology platforms are presented, which have special advantages for addressing applications in the…

IEEE Journal of Microwaves, 2021, 1 (1), pp.288-298. ⟨10.1109/jmw.2020.3031831⟩. ⟨hal-03111157⟩

Communication dans un congrès

Model selection for support-vector machines through metaheuristic optimization algorithms

Oumeima Ghnimi, Sofiane Kharbech, Akram Belazi, Ammar Bouallegue

A machine learning algorithm aims at designing a mathematical model based on a given training data set. Generally, the built model has a set of parameters that need to be adjusted. Since the performance of a given model depends on its settings, the parameters have to be carefully chosen through a…

Thirteenth International Conference on Machine Vision, ICMV 2020, Session 6 - Artificial Intelligence and Intelligent Computing, SPIE, Nov 2020, Rome, Italy. pp.1160509, 59, ⟨10.1117/12.2587439⟩. ⟨hal-03449833⟩

Article dans une revue

SERS characterization of aggregated and isolated bacteria deposited on silver-based substrates

Cristina-Cassiana Andrei, Anne Moraillon, Eric Larquet, Monica Potara, Simion Astilean, Endre Jakab, Julie Bouckaert, Léa Rosselle, Nadia Skandrani, Rabah Boukherroub, Francois Ozanam, Sabine Szunerits, Anne Chantal Gouget-Laemmel

Surface-enhanced Raman scattering (SERS), based on the enhancement of the Raman signal of molecules positioned within a few nanometres from a structured metal surface, is ideally suited to provide bacterial-specific molecular fingerprints which can be used for analytical purposes. However, for some…

Analytical and Bioanalytical Chemistry, 2021, 413, pp.1417-1428. ⟨10.1007/s00216-020-03106-5⟩. ⟨hal-03044073⟩

Chapitre d'ouvrage

11 - Photonic Monomode Circuits: Comb Structures

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

Photon circuits are light conducting networks formed by joining several dielectric waveguide channels for the transmission of light. Their production utilizes the most advanced surface technologies and represents one of the most important challenges for the next decade. These circuits are usually…

Photonics, Part 2: Photonic Circuits, Elsevier, pp.219-285, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00021-6⟩. ⟨hal-03359900⟩

Chapitre d'ouvrage

19 - Optical Waves in Finite Layered Photonic Crystals

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

We investigated the propagation of electromagnetic waves in a finite photonic crystal bounded by a substrate and vacuum, and separated from them by a buffer layer and a cap layer. In this realistic geometry, we show the existence of different kinds of localized and resonant modes whose behaviors…

Photonics, Part Three: Photonic Materials, Elsevier, pp.529-568, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00030-7⟩. ⟨hal-03360008⟩

Chapitre d'ouvrage

13 - Fibonacci Loop Structures: Bandgaps, Power Law, Scaling Law, Confined and Surface Modes

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

We study theoretically and experimentally the existence and behavior of scaling law, power law, as well as confined and surface modes in one-dimensional (1D) quasiperiodic photonic bandgap structures. These structures are made of segments and loops arranged according to a Fibonacci sequence. We…

Photonics, Part 2: Photonic Circuits, Elsevier, pp.333-371, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00023-X⟩. ⟨hal-03359903⟩

Chapitre d'ouvrage

9 - Electromagnetic Induced Transparency, Induced Absorption, and Fano Resonances in Photonic Circuits

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

In this chapter, a simple photonic device consisting of two dangling side resonators grafted at two sites (U-shape) or at the same site (cross-shape) along a waveguide is designed in order to obtain sharp resonant states inside the transmission gaps without introducing any defects in the structure…

Photonics, Part 2: Photonic Circuits, Elsevier, pp.155-191, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00019-8⟩. ⟨hal-03359904⟩

Communication dans un congrès

Analysis of the Susceptibility of the LoRa Communication Protocol in the Railway Electromagnetic Environment

Virginie Deniau, Thomas Vantroys, Norbert Becuwe, Christophe Gransart, Artur Nogueira de Sao Jose, Alexandre Boé, Eric Pierre Simon, Olivier Vlamynck, Florent Valenti, Jonathan Villain, Quentin Rivette

In the context of the digital transformation of railway transportation systems, railway operators investigate the potentialities of the IoT (Internet of Things) in order to optimize the maintenance operations on the vehicles and the infrastructures. One of the interest is to use IoT communication…

URSI GASS 2021, XXXIV General Assembly and Scientific Symposium (GASS) of the International Union of Radio Science (URSI), Aug 2021, Rome, Italy. 4p. ⟨hal-03265936⟩