Publicaciones

• ART

Energy harvesting by uniaxially-stretched poly(lactide) films at low tensile strain frequencies for powering wearable sensors: experimental results and theoretical extrapolation

Mohamed Aymen Ben Achour, Sophie Barrau, Jean-François Tahon, Mohamed Rguiti, Christian Courtois, Birgit Stubbe, Jean-Marie Raquez, Marie-France Lacrampe, Cédric Samuel

Poly(lactide) (PLA) is an eco-friendly and low-cost polymer with a shear piezoelectricity easily induced by uniaxial stretching and without poling process. These interesting features make PLA as a good candidate to replace the widely-used poly(vinylidene difluoride) (PVDF) piezoelectric polymer, in...

Smart Materials and Structures, 2023, Smart Materials and Structures, ⟨10.1088/1361-665x/acd972⟩. ⟨hal-04130906⟩

• ART

Microwave-assisted debinding of Al2O3 parts printed by stereolithography

Maria Canillas, Florian Jean, Anthony Thuault, Dominique Hautcoeur, Anne Leriche

Complex shapes pieces of Al2O3 can be rapidly shaped by SLA technology. However, debinding and sintering post-shaping steps still involve long working times. Sintering by microwave has been previously studied providing important time-saving in the fabrication processes and finer microstructures....

Ceramics International, 2023, 49 (11), pp.18343-18352. ⟨10.1016/j.ceramint.2023.02.206⟩. ⟨hal-04281974⟩

• ART

Mathematical analysis of a thermodynamically consistent reduced model for iron corrosion

Clément Cancès, Claire Chainais-Hillairet, Benoît Merlet, Federica Raimondi, Juliette Venel

We are interested in a reduced model for corrosion of iron, in which ferric cations and electrons evolve in a fixed oxide layer subject to a self-consistent electrostatic potential. Reactions at the boundaries are modeled thanks to Butler-Volmer formulas, whereas the boundary conditions on the...

ZAMP - Zeitschrift für Angewandte Mathematik und Physik , 2023, 74 (3), pp.96. ⟨10.1007/s00033-023-01970-6⟩. ⟨hal-03549457v2⟩

• COMM

Préparation par fabrication additive de supports de catalyseurs pour la conversion de molécules biosourcées

Méryem Mounaj, Florian Jean, Jeremy Dhainaut, Christian Courtois, Yannick Lorgouilloux

L'objectif de ces travaux est de préparer des supports de catalyseurs en céramique poreuse, telle que l'alumine ou la zircone, via l’utilisation de procédés de fabrication additive permettant d’élaborer des pièces par ajout de matière à partir de fichiers numériques. Dans un premier temps...

Journées Nord Ouest Européennes des Jeunes Chercheurs 2023, May 2023, Villeneuve d'Ascq, France. ⟨hal-04303378⟩

• COMM

Synthèse de verres bioactifs dopés et non dopés avec Ag ou Cu par sol-gel et par fusion-trempe

Halima El Bouami, Assia Mabrouk, Cyrille Albert-Mercier, Claudine Follet, Ahmed Bachar

JNOEJC 2023, May 2023, Villeneuve d'Ascq, France. ⟨hal-04318767⟩

• ART

On the notion of ground state for nonlinear Schrödinger equations on metric graphs

Colette De Coster, Simone Dovetta, Damien Galant, Enrico Serra

We compare ground states for the nonlinear Schrödinger equation on metric graphs, defined as global minimizers of the action functional constrained on the Nehari manifold, and least action solutions, namely minimizers of the action among all solutions to the equation. In principle, four alternative...

Calculus of Variations and Partial Differential Equations, 2023, 62 (5), pp.159. ⟨10.1007/s00526-023-02497-4⟩. ⟨hal-03948682⟩

• POSTER

Polar glass-ceramics: specified piezoelectric properties and use for high temperature SAW device

Oussama Zwein, Maurice Gonon, Marc Duquennoy

Phd and Postdoc Day, May 2023, Mons, Belgique. ⟨hal-04429537⟩

• ART

Surface structuring of β-TCP and transition to α-TCP induced by femtosecond laser processing

D Aceti, E Filipov, L Sotelo, T Fontanot, S Christiansen, Marie Lasgorceix, Anne Leriche, I Buchvarov, A Daskalova

Abstract Tricalcium phosphate (Ca 3 (PO 4 ) 2 , TCP), is one of the most studied and used as material for bioresorbable implants. The β phase has a slower dissolution dynamic and ensures mechanical support for a longer time in biological environment, while a faster release of ions characterize the...

Journal of Physics: Conference Series, 2023, 2487 (1), pp.012043. ⟨10.1088/1742-6596/2487/1/012043⟩. ⟨hal-04313350⟩

• ART

Stabilization Results of a Piezoelectric Beams with Partial Viscous Dampings and Under Lorenz Gauge Condition

Mohammad Akil, Abdelaziz Soufyane, Youssef Belhamadia

In this paper, we investigate the stabilization of a one-dimensional piezoelectric (Stretching system) with partial viscous dampings. First, by using Lorenz gauge con- ditions, we reformulate our system to achieve the existence and uniqueness of the solution. Next, by using General criteria of...

Applied Mathematics and Optimization, 2023, 87 (2), ⟨10.1007/s00245-022-09935-3⟩. ⟨hal-04346709⟩

• POSTER

Consolidation à basse température d’hydroxyapatite nanométrique

Muthusundar Kumar, Mohamed Aymen Ben Achour, Marie Lasgorceix, Paulo Quadros, Rosica Mincheva, Jean-Marie Raquez, Anne Leriche

Le "cold sintering process" (CSP), est un procédé innovant permettant la consolidation de céramiques à des températures inférieures à 300°C. Cette réduction considérable de la température de frittage est rendue possible par la présence d’une phase liquide transitoire et par l’application...

GFC 2023, Mar 2023, Limoges, France. ⟨hal-04390729⟩