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Article dans une revue

Evaluation of Textural Degradation in Compressed Medical and Biometric Images by Analyzing Image Texture Features and Edges

Ahmed Bouida, Mohammed Beladgham, Abdesselam Bassou, Ismahane Benyahia, Abdelmalik Taleb-Ahmed, Imene Haouam, Miloud Kamline

The importance of image compression is now essential during transmission or storage processes in various data applications, especially in medical and biometric systems. To perform the effectiveness of the compression process on images and evaluate degradation caused by this process, image quality…

Traitement du Signal, 2020, 37 (5), pp.753-762. ⟨10.18280/ts.370507⟩. ⟨hal-03472290⟩

Communication dans un congrès

Miniaturization of Transmission Lines: Meandered Slow-wave CPWs

Marc Margalef-Rovira, Tadeu Mota Frutuoso, Abdelhalim Saadi, Loïc Vincent, Manuel J. Barragan, Emmanuel Pistono, Christophe Gaquière, Philippe Ferrari

This work presents novel transmission line structures based on Meandered Slow-wave CoPlanar Waveguides (MS-CPWs), aiming to achieve high miniaturization. As a proof-of-concept, these two kinds of transmission lines were designed and fabricated in the AMS 0.35 mu m CMOS technology together with…

IEEE MTT-S International Conference on Microwaves for Intelligent Mobility (ICMIM 2020), Nov 2020, Linz (virtual), Austria. ⟨10.1109/ICMIM48759.2020.9299107⟩. ⟨hal-03371412⟩

Communication dans un congrès

Polymer Photonic Crystal Membrane for Human Body Thermoregulation

Mohamed Boutghatin, Salim Assaf, Michèle Carette, V. Thomy, Abdellatif Akjouj, Bahram Djafari-Rouhani, Yan Pennec

We study the optical properties of a polymer photonic membrane to keep the human body in thermal comfort. We show theoretically that the periodic structuration of the membrane with air holes modulates the optical response in the Mid-Infrared range. We found that the modulation of the optical…

11th International Conference on Sensor Device Technologies and Applications, SENSORDEVICES 2020, Nov 2020, Valencia, Spain. pp.49-51. ⟨hal-03642734⟩

Article dans une revue

Exploring the capabilities of scanning microwave microscopy to characterize semiconducting polymers

Olivier Douhéret, Didier Theron, David Moerman

Standing at the meeting between solid state physics and optical spectroscopy, microwave characterization methods are efficient methods to probe electronic mechanisms and mesoscopic transport in semiconducting polymers. Scanning microwave microscopy, augmented with a Mach-Zehnder interferometer…

Applied Sciences, 2020, 10 (22), 8234, 11 p. ⟨10.3390/app10228234⟩. ⟨hal-03022518⟩

Thèse

Modelling and evaluation of carbon based foam thermoacoustic effect for effective sound generation in fluids, Analyse théorique et expérimentale de l'efficacité de mousse de carbone pour génération acoustique dans des milieux visqueux

Pierre, Henri Guiraud

Electroacoustic transducers along with piezoelectric devices are the most widely used methods for acoustic sound generation in gas and liquids. A mechanical movement of a membrane induces fluid vibration thus creating an acoustic wave. The thermoacoustic process on the other hand uses fast paces…, Les transducteurs électroacoustiques ainsi que les dispositifs piézoélectriques sont les principales méthodes de génération acoustique dans un gaz ou un liquide. Un mouvement mécanique d’une membrane crée une vibration du fluide générant une onde acoustique. La thermoacoustique en revanche utilise…

Other [cs.OH]. Centrale Lille Institut, 2020. English. ⟨NNT : 2020CLIL0011⟩. ⟨tel-03220987⟩

Communication dans un congrès

Simulation and optimization of rail freight yards

P. Pellegrini, P. Hosteins, J. Rodriguez, Samuel Deleplanque, N. Adamko, M. Zat'Ko

Managing a rail freight yard is a very complicated task that is currently performedmostly manually by yard operators. The OptiYard European project aimed to the optimization ofyard management and to the production of a closed-loop optimization and simulation frameworkto show its applicability in…

International Conference on Optimization and Decision Science, ODS 2020, Nov 2020, Rome, Italy. ⟨hal-03450925⟩

Article dans une revue

Shape dynamics of rotating polygons on the surface of liquid nitrogen in a Leidenfrost state

Jacob S. Bach, Alexis Duchesne, Tomas Bohr

When liquid nitrogen is set into rotation in a warm pot, the surface, initially forming an axis symmetrical, toroidal shape, spontaneously re-structures into a series of rotating polygons with a diminishing number of corners, while slowing down. This spontaneous "ordering" occurs despite…

Comptes Rendus. Mécanique, 2020, 348 (6-7), pp.457-473. ⟨10.5802/crmeca.24⟩. ⟨hal-03322812⟩

Article dans une revue

Asymmetric topological state in an elastic beam based on symmetry principle

Yabin Jin, Wan Wang, Bahram Djafari-Rouhani

The symmetric propagation of topological edge states in two-dimensional (2D) mechanical systems cannot be directly applied to a one-dimensional (1D) system such as a beam. In this work, we adopt symmetry principle of single- and double-sided pillared phononic beams to realize asymmetric…

International Journal of Mechanical Sciences, 2020, 186, ⟨10.1016/j.ijmecsci.2020.105897⟩. ⟨hal-03321518⟩

Thèse

Conception et réalisation de capteurs de gaz antipollution à base de Nitrure de Gallium pour application automobile, Design and fabrication of Gallium Nitride based emission gas sensors for automotive application

Hassane Ouazzani Chahdi

Le nitrure de gallium (GaN) est un semi-conducteur à large bande interdite ayant des propriétés physiques exceptionnelles. C'est un matériau très convoité pour la réalisation de dis-positifs en électronique de puissance RF ou de commutation, en plus de pouvoir être fonctionne là haute…, Gallium nitride (GaN) is a wide band gap semiconductor material with exceptional physical properties. It is highly coveted for the realization of devices in power electronics switching or high frequency in addition to being able to operate at high temperature. In this context,GaN-based HEMT-type…

Micro et nanotechnologies/Microélectronique. Université de Lille; Université de Sherbrooke (Québec, Canada), 2020. Français. ⟨NNT : 2020LILUI085⟩. ⟨tel-04763441⟩

Article dans une revue

Plasmon-driven electrochemical methanol oxidation on gold nanohole electrodes

Liuqing Pang, Alexandre Barras, Vladyslav Mishyn, Svetlana Heyte, Egon Heuson, Hamid Oubaha, Georgiana Sandu, Sorin Melinte, Rabah Boukherroub, Sabine Szunerits

Direct methanol oxidation is expected to play a central role in low-polluting future power sources. However, the sluggish and complex electro-oxidation of methanol is one of the limiting factors for any practical application. To solve this issue, the use of plasmonic is considered as a promising…

ACS Applied Materials & Interfaces, 2020, 12 (45), pp.50426-50432. ⟨10.1021/acsami.0c14436⟩. ⟨hal-03089817⟩