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Affichage de 5291 à 5300 sur 16287

  • 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⟩

  • Communication dans un congrès

On wafer millimetre wave power detection using a PN junction diode in BiCMOS 55 nm for in-situ large signal characterization

Joao Carlos Azevedo Goncalves, Issa Alaji, Daniel Gloria, Vincent Gidel, Frederic Gianesello, Sylvie Lepilliet, Guillaume Ducournau, Francois Danneville, Christophe Gaquière

This paper describes millimetre wave (mmW) on-wafer power detection using dedicated high frequency diode junction with a cut-off frequency (fc) of 400 GHz, integrated in SiGe BiCMOS 55 nm technology from STMicroelectronics. This extraction was performed in order to develop fully integrated power…

48th European Microwave Conference (EuMC), Sep 2018, Madrid, Spain. ⟨10.23919/EuMC.2018.8541387⟩. ⟨hal-03272705⟩

  • Communication dans un congrès

Conception and realization of highly selective band-pass filters in Ka-band built on thin polymer films

Mohammed El Gibari, Sara Bretin, Patrick Derval, S. Ginestar, Guillaume Lirzin, Hong Wu Li

A novel structure of high performance narrow band-pass filters on thin polymer film is reported in this paper. It's composed of two microstrip resonators placed between two via-free microstrip-grounded coplanar waveguide transitions. It combines therefore compactness, low-cost, fabrication…

29th International Conference on Microelectronics, ICM 2017, Dec 2017, Beirut, Lebanon. pp.1-4, ⟨10.1109/ICM.2017.8268896⟩. ⟨hal-01774145⟩

  • 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⟩

  • 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

Wavelength characterization of an acousto-optic notch filter for unpolarized near-infrared light

Jean-Claude Kastelik, Justine Champagne, Samuel Dupont, Konstantin B. Yushkov

A cascaded system of two acousto-optical cells is proposed and experimentally demonstrated for optical notch rejection filtering in the spectral range from 1400 nm to 1600 nm. Two similar paratellurite acousto-optical devices for unpolarized light are used in a free-space gap of a fiber line.…

Applied optics, 2018, 57 (10), pp.C36-C41. ⟨10.1364/AO.57.000C36⟩. ⟨hal-03183486⟩

  • Article dans une revue

Magnetodielectric Nanocomposite Polymer-Based Dual-Band Flexible Antenna for Wearable Applications

Z. Hamouda, Jean-Luc Wojkiewicz, Alexander A. Pud, Lamine Kone, Said Bergheul, Tuami Lasri

One of the major challenges in wireless communication technologies is the antenna design. In this paper, a wide-band flexible antenna made by covering a Kapton substrate with a flexible magnetodielectric polymer-based nanocomposite layer is proposed. This novel magnetodielectric polymer-based…

IEEE Transactions on Antennas and Propagation, 2018, 66 (7), pp.3271-3277. ⟨10.1109/TAP.2018.2826573⟩. ⟨hal-03185116⟩

  • Communication dans un congrès

Highly Sensitive Surface Acoustic Wave Magnetic Field Sensor Using Multilayered TbCo2/FeCo Thin Film

Aurelien Mazzamurro, Abdelkrim Talbi, Yannick Dusch, Omar Elmazria, Philippe Pernod, Olivier Bou Matar, Nicolas Tiercelin

Over the last decades, the use of Surface Acoustic Waves (SAW) has emerged as a promising technology in many applications such as filters, signal processing but also sensors. We report the fabrication and the characterization of a SAW delay line magnetic field sensor using uniaxial multi-layered…

32nd Eurosensors Conference, EUROSENSORS 2018, Sep 2018, Graz, Austria. pp.902, ⟨10.3390/proceedings2130902⟩. ⟨hal-02318300⟩

  • Article dans une revue

Impact of unintentional oxygen doping on organic photodetectors

Julie Euvrard, Amelie Revaux, Alexandra Cantarano, Stephanie Jacob, Antoine Kahn, Dominique Vuillaume

Oxygen plasma is a widely used treatment to change the surface properties of organic layers. This treatment is particularly interesting to enable the deposition from solution of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) on top of the active layer of organic solar cells or…

Organic Electronics, 2018, 54, pp.64-71. ⟨10.1016/j.orgel.2017.12.008⟩. ⟨hal-03183490⟩