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Affichage de 5171 à 5180 sur 16120

  • Article dans une revue

A simplified modal expansion formalism adapted to the optical design of resonant cavity enhanced photodetectors using metallic gratings

Maximilien Billet, Emilien Peytavit

In this communication, we present a method to model the light absorption in a resonant photoconductor based on a photoconductive layer sandwiched between a metallic grating in front side and a metallic backside mirror. We started from a modal expansion formalism previously developed in order to…

Optik, 2018, 154, pp.828 - 839. ⟨10.1016/j.ijleo.2017.10.041⟩. ⟨hal-02997746⟩

  • Article dans une revue

Dynamics of a broad-band quantum cascade laser: from chaos to coherent dynamics and mode-locking

L. Columbo, S Barbieri, C. Sirtori, M. Brambilla

The dynamics of a multimode quantum cascade laser, are studied in a model based on effective semiconductor Maxwell-Bloch equations, encompassing key features for the radiation-medium interaction such as an asymmetric frequency dependent gain and refractive index as well as the phase-amplitude…

Optics Express, 2018, 26 (3), pp.2829. ⟨10.1364/OE.26.002829⟩. ⟨hal-02403192⟩

  • Article dans une revue

Accuracy of parameter identification using the dispersion of surface waves and the role of data quality for inhomogeneous concrete

Radoslaw Drelich, Mariusz Kaczmarek, Bogdan Piwakowski

We study the influence of the data quality on the accuracy of parameter identification for inhomogeneous concrete. The surface of the concrete may differ as a result of either intentional action (decoration or repair) or the interaction of initially homogeneous concrete with the environment. Non-…

NDT & E International, 2018, 98, pp.195-207. ⟨10.1016/j.ndteint.2018.05.002⟩. ⟨hal-03185113⟩

  • Article dans une revue

Modeling of a Circular Ring MEMS Resonator with Voltage Excitation by Means of an Orthogonal Polynomial Method

Ismail Naciri, Abdessamad Rguiti, Lahoucine Elmaimouni, Jean-Etienne Lefebvre, Faniry Emilson Ratolojanahary, Tadeusz Gryba

The three-dimensional vibrational behavior of a piezoelectric circular ring made of a 6 mm hexagonal material is studied using Legendre polynomial method. The method is simple to implement and based on expanding the electrical potential and the mechanical displacement components in a double series…

Acta Acustica united with Acustica, 2018, 104 (4), pp.553-560. ⟨10.3813/AAA.919196⟩. ⟨hal-03185120⟩

  • Communication dans un congrès

Scanning microwave microscopy of vital mitochondria in respiration buffer

Jinfeng Li, Zahra Nemati, Kamel Haddadi, Douglas C. Wallace, Peter J. Burke

We demonstrate imaging using scanning microwave microscopy (SMM) of vital mitochondria in respiration buffer. The mitochondria are isolated from cultured HeLa cells and tethered to a solid graphene support. The mitochondria are kept vital (alive) using a respiration buffer, which provides nutrients…

IEEE/MTT-S International Microwave Symposium, IMS 2018, Jun 2018, Philadelphia, PA, United States. pp.115-118, ⟨10.1109/MWSYM.2018.8439645⟩. ⟨hal-03224648⟩

  • Article dans une revue

Highly confined Love waves modes by defect states in a holey SiO2/quartz phononic crystal

Yuxin Liu, Abdelkrim Talbi, Philippe Pernod, Olivier Bou Matar

Highly confined Love modes are demonstrated in a phononic crystal based on a square array of etched holes in SiO2 deposited on the ST-cut quartz. An optimal choice of the geometrical parameters contributes to a wide stop-band for shear waves' modes. The introduction of a defect by removing…

Journal of Applied Physics, 2018, 124, pp.145102. ⟨10.1063/1.5040069⟩. ⟨hal-01883664⟩

  • Article dans une revue

Two dimensional modeling of elastic wave propagation in solids containing cracks with rough surfaces and friction – Part I: Theoretical background

Vladislav Aleshin, Steven Delrue, Andrey Trifonov, Olivier Bou Matar, Koen van den Abeele

Abstract Our study aims at the creation of a numerical toolbox that describes wave propagation in samples containing internal contacts (e.g. cracks, delaminations, debondings, imperfect intergranular joints) of known geometry with postulated contact interaction laws including friction. The code…

Ultrasonics, 2018, 82, pp.11-18. ⟨10.1016/j.ultras.2017.07.002⟩. ⟨hal-02364063⟩

  • Article dans une revue

Microscale ultrahigh-frequency resonant wireless powering for capacitive and resistive MEMS actuators

Yoshio Mita, Naoyuki Sakamoto, Naoto Usami, Antoine Frappé, Akio Higo, Bruno Stefanelli, Hidehisa Shiomi, Julien Bourgeois, Andreas Kaiser

This paper presents a versatile chip-level wireless driving method for microelectromechanical system (MEMS) actuators. A MEMS actuator is integrated as an electrical component of a coupled LCR resonant circuit, and it rectifies the energy sent through an ultrahigh-frequency (UHF) radio frequency (…

Sensors and Actuators A: Physical , 2018, 275, pp.75-87. ⟨10.1016/j.sna.2018.03.020⟩. ⟨hal-02182815⟩

  • Article dans une revue

Cold remote plasma modification of wood: Optimization process using experimental design

Brigitte Mutel, Muriel Bigan

A Cold Remote (N-2 + O-2) Plasma (CRNOP) process was used in order to create new surface properties on various wooden samples. Two applications were studied and optimized using experimental design. The first one involved samples (fir, pine, beech and oak) treated by the CRNOP in order to increase…

Applied Surface Science, 2018, 453, pp.423-435. ⟨10.1016/j.apsusc.2018.04.252⟩. ⟨hal-03183492⟩

  • Communication dans un congrès

Resolution Improvement Method for Non-Destructive Imaging with Near-Field Scanning Microwave Microscopy

Tianjun Lin, S. Gu, T. Lasri

In this paper we report a resolution enhancement method for non-destructive imaging application with near-field scanning microwave microscopy (NFMM). The technique proposed for the image processing is based on the combination of the position/signal difference (PSD) method and an adaptive robust…

48th European Microwave Conference, EuMC 2018, Sep 2018, Madrid, Spain. pp.1053-1056, ⟨10.23919/EuMC.2018.8541554⟩. ⟨hal-03538367⟩