Publications

• Communication dans un congrès

Event-driven ECG classification using an open-source, LC-ADC based non-uniformly sampled dataset

M. Saeed, Q. Wang, O. Märtens, Benoit Larras, Antoine Frappé, B. Cardiff, D. John

In this article, non-uniformly sampled electrocardiogram (ECG) signals obtained from level-crossing analog-to-digital converters (LC-ADCs) are analyzed for event-driven classification and compression performance. The signal compression results show that it is important to assess the distortion in…

53rd IEEE International Symposium on Circuits and Systems, ISCAS 2021, May 2021, Daegu, South Korea. pp.9401333, ⟨10.1109/ISCAS51556.2021.9401333⟩. ⟨hal-03362265⟩

• Communication dans un congrès

GaN-based HEMTs operating as zero-bias microwave detectors at low temperature

G. Paz, I. Iniguez de La Torre, H. Sanchez, Virginie Hoel, Y. Cordier, T. Gonzalez, J. Mateos

13th Spanish Conference on Electron Devices, CDE 2021, Jun 2021, Seville, Spain. ⟨hal-03340956⟩

• 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⟩

• 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

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⟩

• 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⟩

• Communication dans un congrès

Coherent polarization rotation of TeraHertz spintronic emitters with in-plane uni-axial magnetic anisotropy

Geoffrey Lezier, Pierre Koleják, Jean-Francois Lampin, Kamil Postava, Mathias Vanwolleghem, Nicolas Tiercelin

Spintronic TeraHertz emitters using uni-axial anisotropic FeCo/TbCo 2 /FeCo ferromagnetic layers allow the polarization control of the THz emitted wave thanks to the Stoner-Wohlfarth coherent rotation of magnetization when submitted to a magnetic field along hard axis.

CLEO: Applications and Technology, 2021, San Jose, United States. pp.JM3G.2, ⟨10.1364/CLEO_AT.2021.JM3G.2⟩. ⟨hal-03329137⟩

• Article dans une revue

Experimental Evidence of the Existence of Bound States in the Continuum and Fano Resonances in Solid-Liquid Layered Media

Madiha Amrani, Ilyasse Quotane, Cécile Ghouila-Houri, El Houssaine El Boudouti, Leonid Krutyansky, Bogdan Piwakowski, Philippe Pernod, Abdelkrim Talbi, Bahram Djafari-Rouhani

Bound states in continuum (BICs) are resonances with zero width (infinite lifetime) without any leakage into the surrounding media. Their fascinating properties and potential applications have attracted a great deal of interest. In this paper, we give an analytical, numerical, and experimental…

Physical Review Applied, 2021, 15 (5), pp.054046. ⟨10.1103/PhysRevApplied.15.054046⟩. ⟨hal-03462932⟩

• 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⟩

• 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⟩