Publications

• Article dans une revue

Dielectric properties and relaxor behavior of 0.935(Na0.5Bi0.5)TiO3-0.065BaTiO3 lead free piezoelectric ceramic

Hamza Lidjici, Brahim Marfoua, Brahim Laghoun, Mohamed Rguiti, Hamadi Khemakhem

Dielectric properties of 0.935(Na0.5Bi0.5)TiO3-0.065BaTiO3 lead free piezoelectric ceramic are studied. The study shows a diffuse phase transition (DPT) characterized by a frequency dispersion of permittivity which is related to cation disorder at A-site. Additionally to this dispersion, this solid…

Ceramics International, 2016, 42 (11), pp.12735-12739. ⟨10.1016/j.ceramint.2016.05.029⟩. ⟨hal-03117445⟩

• Article dans une revue

Numerical and ex vivo studies of a bioprobe developed for laser-induced thermotherapy (LITT) in contact with liver tissue

Thierry Chartier, Olivier Carpentier, Benoit Genestie, J-C. Hornez, Francine Monchau

This work is based on the production of a bioprobe that is compatible with magnetic resonance imaging (MRI) for laser-induced thermotherapy (LITT) in liver cancer laser therapy. This probe is made of an alumina tube (3-mm diameter) in which an optical fibre is centred and fixed. A shooting window (…

Medical Engineering & Physics, 2016, 38 (8), pp.733-740. ⟨10.1016/j.medengphy.2016.04.024⟩. ⟨hal-03276066⟩

• Article dans une revue

Polynomial approach for modeling a piezoelectric disc resonator partially covered with electrodes

L. Elmaimouni, Jean-Etienne Lefebvre, F.E. Ratolojanahary, J.G. Yu, P.M. Rabotovao, I. Naciri, Tadeusz Gryba, Mohamed Rguiti

The frequency spectrum of a partially metallized piezoelectric disc resonator was studied using Legendre polynomials. The formulation, based on three-dimensional equations of linear elasticity, takes into account the high contrast between the electroded and non-electroded regions. The mechanical…

Wave Motion, 2016, 64, pp.79-91. ⟨10.1016/j.wavemoti.2016.03.003⟩. ⟨hal-03120077⟩

• Article dans une revue

Expériences de pédagogie par projet avec les MOOCs

Jean-Charles Canonne, Jean-Paul Becar, Laurent Vermeiren, Benoît Delporte, Séverine Parmentier

Revue des Départements de Génie Electrique et Informatique Industrielle, 2016, Autour du Colloque de Nancy, 87, pp.7-10. ⟨hal-03132573⟩

• Article dans une revue

Stability of the wave equation with localized Kelvin-Voigt damping and boundary delay feedback

Serge Nicaise, Cristina Pignotti

We study the stabilization problem for the wave equation with localized Kelvin--Voigt damping and mixed boundary condition with time delay. By using a frequency domain approach we show that, under an appropriate condition between the internal damping and the boundary feedback, an exponential…

Discrete and Continuous Dynamical Systems - Series S, 2016, 9 (3), pp.791-813. ⟨10.3934/dcdss.2016029⟩. ⟨hal-03142563⟩

• Article dans une revue

Control of the radiative heating of a glass plate

Luc Paquet

In a preceding paper (MSIA, 2012), we have studied the radiative heating of an infinite horizontal glass plate. Here, we want to control the temperature T(x, t) at time t along the flat glass thickness x during the fixed time of heating ] 0 , tf[ , by acting on the temperature u(t) of the black…

Afrika Matematika, 2016, 27 (3-4), pp.673-699. ⟨10.1007/s13370-015-0371-2⟩. ⟨hal-03212546⟩

• Article dans une revue

Homological projective duality for determinantal varieties

Marcello Bernardara, Michele Bolognesi, Daniele Faenzi

In this paper we prove Homological Projective Duality for categorical resolutions of several classes of linear determinantal varieties. By this we mean varieties that are cut out by the minors of a given rank of a matrix of linear forms on a given projective space. As applications, we obtain pairs…

Advances in Mathematics, 2016, 296, pp.181 - 209. ⟨10.1016/j.aim.2016.04.003⟩. ⟨hal-01816625⟩

• Article dans une revue

Lossless error estimates for the stationary phase method with applications to propagation features for the Schrödinger equation

Felix Ali Mehmeti, Florent Dewez

We consider a version of the stationary phase method in one dimension of A. Erdelyi, allowing the phase to have stationary points of non-integer order and the amplitude to have integrable singularities. After having completed the original proof and improved the error estimate in the case of regular…

Mathematical Models and Methods in Applied Sciences, 2016, 40 (3), pp.626-662. ⟨10.1002/mma.3998⟩. ⟨hal-03138418⟩

• Article dans une revue

Synthesis of nanosized TiO2 powder by sol gel method at low temperature

W. Nachit, Samira Touhtouh, Zahra Ramzi, Mohamed Zbair, Adil Eddiai, Mohamed Rguiti, Abdelhadi Bouchikhi, Abdelowahed Hajjaji, Khalil Benkhouja

Nanotechnology is all about making products from very small constituents, components or subsystems to gain greatly enhanced material properties and functionality. Nanocrystalline anatase TiO2 was prepared by a facile sol–gel route at a temperature of 50°C under mild conditions. Titanium…

Molecular Crystals and Liquid Crystals, 2016, 627 (1), pp.170-175. ⟨10.1080/15421406.2015.1137135⟩. ⟨hal-03120411⟩

• Article dans une revue

Dielectric characterization of lead zirconate-titane/polyurethane thin film composite: Volume fraction, frequency and temperature dependence

Sarah Aboubakr, Mohamed Rguiti, Madiha Yessari, Abdessamad Elballouti, Christian Courtois, Abdelowahed Hajjaji

The Lead Zirconate-titane (PZT) ceramic is known by its piezoelectric characteristic, but also by its stiffness. The use of a composite based on a polyurethane (PU) matrix charged by a piezoelectric material, enable to generate a large deformation of the material, therefore harvesting more energy.…

Molecular Crystals and Liquid Crystals, 2016, 627 (1), pp.82-91. ⟨10.1080/15421406.2015.1137148⟩. ⟨hal-03117475⟩