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Pyroelectric power harvesting using a lead-lanthanum-zirconate-titanate (7/60/40 PLZT) pyroelectric cell

Mounir Amokrane, Arnaud Baysse, Bertrand Nogarede, Mohamed Rguiti

The aim of this work is to study the ability of harvesting energy using a lead-Ianthanum-zirconate-titanate (7/60/40 PLZT) pyroelectric cell. For this purpose, the active element is subjected to temperature variations. The pyroelectric cell is directly connected to a load to realize a resistive…

ECMSM 2013 : IEEE 11th International Workshop of Electronics, Control, Measurement, Signals and their application to Mechatronics, Toulouse, France,, 2013, Toulouse, France. ⟨10.1109/ECMSM.2013.6648972⟩. ⟨hal-04134000⟩

Article dans une revue

Optimal stopping and stochastic control differential games for jump diffusions

Fouzia Baghery, Sven Haadem, Bernt Oksendal, Isabelle Turpin

We study stochastic differential games of jump diffusions driven by Brownian motions and compensated Poisson random measures, where one of the players can choose the stochastic control and the other player can decide when to stop the system. We prove a verification theorem for such games in terms…

Stochastics: An International Journal of Probability and Stochastic Processes, 2013, 85 (1), pp.85-97. ⟨10.1080/17442508.2011.652116⟩. ⟨hal-03149926⟩

Article dans une revue

A new system for stop motion camera movements

Laura Saini, Gudrun Albrecht, Nicolas Lissarrague, Lucia Romani

This article presents a new system that allows the creation of realistic camera movements for a stop motion animation. The system improves traditional 3D software animation programs (e.g. Maya and 3D Studio Max) for creating stop motion camera movements by using a haptic interface. We describe the…

Animation Practice, Process & Production, 2012, 2 (1), pp.151-187. ⟨10.1386/ap3.2.1-2.151_1⟩. ⟨hal-05735670⟩

Article dans une revue

A locking-free discontinuous Galerkin method for linear elasticity in locally nearly incompressible heterogeneous media

Daniele Antonio Di Pietro, Serge Nicaise

In this work we consider the problem of numerical locking in composite materials featuring quasi-incompressible and compressible sections. More specifically, we start by extending a classical regularity estimate for the $H^1$-norm of the divergence of the displacement field to the heterogeneous…

Applied Numerical Mathematics: an IMACS journal, 2012, 63, pp.105-116. ⟨10.1016/j.apnum.2012.09.009⟩. ⟨hal-00685020⟩

Article dans une revue

Crystal structures of Boro-AFm and sBoro-AFt phases

Jean-Baptiste Champenois, Adel Mesbah, Céline Cau Dit Coumes, Guillaume Renaudin, Fabrice Leroux, Cyrille Albert-Mercier, Bertrand Revel, Denis Damidot

Crystal structures of boron-containing AFm (B-AFm) and AFt (B-AFt) phases have been solved ab-initio and refined from X-ray powder diffraction. 11B NMR and Raman spectroscopies confirm the boron local environment in both compounds: three-fold coordinated in B-AFm corresponding to HBO3 2− species,…

Cement and Concrete Research, 2012, 42 (10), pp.1362-1370. ⟨10.1016/j.cemconres.2012.06.003⟩. ⟨hal-02043826⟩

Article dans une revue

Takacs-Fiksel method for stationary marked Gibbs point processes

Jean-François Coeurjolly, David Dereudre, Rémy Drouilhet, Frédéric Lavancier

This paper studies a method to estimate the parameters governing the distribution of a stationary marked Gibbs point process. This procedure, known as the Takacs-Fiksel method, is based on the estimation of the left and right hand sides of the Georgii-Nguyen-Zessin formula and leads to a family of…

Scandinavian Journal of Statistics, 2012, 39 (3), pp.416-443. ⟨10.1111/j.1467-9469.2011.00738.x⟩. ⟨hal-00502004v2⟩

Article dans une revue

Stability of tetragonal 〈001〉 oriented PZN-12PT single crystals

S. Touhtouh, A. Hajjaji, Y. Boughaleb, K. Benkhouja, A. Arbaoui, Mohamed Rguiti, D. Guyomar

The present paper reports on the synthesis and electromechanical characterization of tetragonal (1 − x)Pb(Zn1/3–Nb2/3)O3–xPbTiO3 (x = 12) single crystals as a function of various external disturbances. Tetragonal PZN-12PT single crystals were grown using the flux method. The set of piezoelectric…

Optical Materials, 2012, 34 (10), pp.1625-1629. ⟨10.1016/j.optmat.2012.04.002⟩. ⟨hal-04281119⟩

Article dans une revue

Existence of Gibbsian point processes with geometry-dependent interactions

David Dereudre, Rémy Drouilhet, Hans Otto Georgii

We establish the existence of stationary Gibbsian point processes for interactions that act on hyperedges between the points. For example, such interactions can depend on Delaunay edges or triangles, cliques of Voronoi cells or clusters of k-nearest neighbors. The classical case of pair…

Probability Theory and Related Fields, 2012, 153 (3-4), pp.643-670. ⟨10.1007/s00440-011-0356-5⟩. ⟨hal-00850422⟩

Article dans une revue

Biomimetic evaluation of β tricalcium phosphate prepared by hot isostatic pressing

Mihaela Mateescu, Emmanuelle Rguitti, Arnaud Ponche, Michel Descamps, Karine Anselme

Two types of completely densified β-TCP tablets were synthesized from a stoichiometric β-TCP powder. The first ones (TCP) were conventionally sintered, while the second ones (TCP-T) were sintered and treated by hot isostatic process (HIP). The HIP produced completely densified materials with…

Biomatter, 2012, 2 (3), pp.103-113. ⟨10.4161/biom.21377⟩. ⟨hal-02584462⟩

Article dans une revue

Morphotropic phase boundary in the BNT–BT–BKT system

Jean-François Trelcat, Christian Courtois, Mohamed Rguiti, Anne Leriche, Paul-Henri Duvigneaud, Tiriana Segato

Lead-free x Bi0.5Na0.5TiO3–y BaTiO3–z Bi0.5K0.5TiO3 piezoelectric ceramics were synthesized by a conventional solid state reaction method. The microstructure, ferroelectric and piezoelectric properties of the ceramics were investigated. Structure measurements by X-ray diffraction with Rietveld…

Ceramics International, 2012, 38 (4), pp.2823-2827. ⟨10.1016/j.ceramint.2011.11.053⟩. ⟨hal-04281117⟩