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Affichage de 5231 à 5240 sur 16263

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

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⟩

Chapitre d'ouvrage

Chapter 3 - Phonons in supported layers

Abdellatif Akjouj, El Houssaine El Boudouti, L. Dobrzynski, Bahram Djafari-Rouhani, Gaëtan Lévêque, Yan Pennec, Housni Al-Wahsh

This chapter is on phonons in supported slabs. It starts by a presentation of the general equations for an elastic material. General analytic expressions are obtained for bulk and surface Green’s functions, as simple examples of the continuous interface response theory of Chapter 1 of this book.…

Phononics: interface transmission tutorial book series, Elsevier, pp.79-137, 2018, ISBN 978-0-12-809948-3 ; e-ISBN 978-0-12-809931-5. ⟨10.1016/B978-0-12-809948-3.00003-X⟩. ⟨hal-03356294⟩

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

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

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

GaN-on-silicon high-electron-mobility transistor technology with ultra-low leakage up to 3000 V using local substrate removal and AlN ultra-wide bandgap

Ezgi Dogmus, Malek Zegaoui, F Medjdoub

We report on extremely low off-state leakage current in AlGaN/GaN-on-silicon metal–insulator–semiconductor high-electron-mobility transistors (MISHEMTs) up to a high blocking voltage. Remarkably low off-state gate and drain leakage currents below 1 µA/mm up to 3 kV have been achieved owing to the…

Applied Physics Express, 2018, 11 (3), pp.034102. ⟨10.7567/APEX.11.034102⟩. ⟨hal-02356739⟩

Article dans une revue

Optical transmission properties of an anisotropic defect cavity in one-dimensional photonic crystal

Noama Ouchani, Abdelaziz El Moussaouy, Hassan Aynaou, Youssef El Hassouani, El Houssaine El Boudouti, Bahram Djafari-Rouhani

We investigate theoretically the possibility to control the optical transmission in the visible and infrared regions by a defective one dimensional photonic crystal formed by a combination of a finite isotropic superlattice and an anisotropic defect layer. The Green's function approach has…

Physics Letters A, 2018, 382 (4), pp.231-240. ⟨10.1016/j.physleta.2017.11.020⟩. ⟨hal-03183514⟩