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Affichage de 5231 à 5240 sur 16232

  • Article dans une revue

Dynamical effective parameters of elastic superlattice with strong acoustic contrast between the constituents

Yurii Zubov, Bahram Djafari-Rouhani, Arkadii Krokhin

Analytical formulas are obtained for frequency-dependent effective elastic modulus and effective mass density for a periodic layered structure. The proposed homogenization procedure is valid at sufficiently high frequencies well above the lowest band gap in the acoustic spectrum of the structure....

Low Temperature Physics, 2018, 44 (12), pp.1280-1284. ⟨10.1063/1.5078612⟩. ⟨hal-03183474⟩

  • Article dans une revue

When is a surface foam-phobic or foam-philic?

Miguel Teixeira, S. Arscott, Simon Cox, Paulo Teixeira

By integrating the Young-Laplace equation, including the effects of gravity, we have calculated the equilibrium shape of the two-dimensional Plateau borders along which a vertical soap film contacts two flat, horizontal solid substrates of given wettability. We show that the Plateau borders, where...

Soft Matter, 2018, 14 (26), pp.5369-5382. ⟨10.1039/c8sm00310f⟩. ⟨hal-02345387⟩

  • Article dans une revue

ArfGAP1 restricts Mycobacterium tuberculosis entry by controlling the actin cytoskeleton

Ok-Ryul Song, Christophe J Queval, Raffaella Iantomasi, Vincent Delorme, Sabrina Marion, Romain Veyron-Churlet, Elisabeth Werkmeister, Michka Popoff, Isabelle Ricard, Samuel J Jouny, Nathalie Deboosere, Frank Lafont, Alain Baulard, Edouard Yeramian, Laurent Marsollier, Eik Hoffmann, Priscille Brodin

The interaction of Mycobacterium tuberculosis (Mtb) with pulmonary epithelial cells is critical for early stages of bacillus colonization and during the progression of tuberculosis. Entry of Mtb into epithelial cells has been shown to depend on F-actin polymerization, though the molecular...

EMBO Reports, 2018, 19 (1), pp.29-42. ⟨10.15252/embr.201744371⟩. ⟨inserm-01636290⟩

  • Article dans une revue

Effect of cobalt addition on the corrosion behavior of near equiatomic NiTi shape memory alloy in normal saline solution: electrochemical and XPS studies

Nawal Alqarni, Joanna Wysocka, Nader El-Bagoury, Jacek Ryl, Mohammed Amin, Rabah Boukherroub

The electrochemical and corrosion (uniform and localized) behavior of a binary Ni52Ti48 shape memory alloy (SMA) and two ternary Ni52Ti48−xCox (x = 1.5 and 4.0 wt%) SMAs were studied. Measurements were conducted in 0.9% NaCl solution at 37 °C employing various electrochemical methods. These include...

RSC Advances, 2018, 8 (34), pp.19289-19300. ⟨10.1039/c8ra02031k⟩. ⟨hal-02375210⟩

  • Article dans une revue

Non-destructive Evaluation of Concrete Damages of Containment Walls in Nuclear Power Plants

Zoubir Medhi Sbartaï, Vincent Garnier, Cedric Payan, Bogdan Piwakowski, E. Larose, J. Saliba, Narintsoa Ranaivomanana, Jean-Paul Balayssac

This paper is focused on the part of the project ANR ENDE that concerns the damage and crack characterization by means of NDT. The tests are done in 3 or 4 points bending in order to study the cracks' generation, their propagation, as well as their opening and closing. The main ultrasonic...

Academic Journal of Civil Engineering, 2018, ⟨10.26168/ajce.36.1.25⟩. ⟨hal-02444565⟩

  • 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

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⟩

  • 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

10-Gb/s Indoor THz Communications Using Industrial Si Photonics Technology

Elsa Lacombe, Cybelle Belem-Gonçalves, Cyril Luxey, Frédéric Gianesello, Cédric Durand, Daniel Gloria, Guillaume Ducournau

In this letter, we report the design, fabrication, and measurement of a silicon photonics-based transmitter (Tx) offering both mass production capability and high integration level potentiality. The Tx circuit consists of an integrated photodiode generating a 200-300-GHz signal for photonic...

IEEE Microwave and Wireless Components Letters, 2018, 28 (4), pp.362-364. ⟨10.1109/LMWC.2018.2811242⟩. ⟨hal-03183484⟩

  • 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⟩