Publicaciones

• Poster de conférence

The Nonlinear Schrödinger Equation on Metric Graphs

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

Mardi des chercheurs 2024, Mar 2024, Mons, Belgium. ⟨hal-04550177⟩

• Poster de conférence

Elaboration et optimisation par simulation de matériaux piézoélectriques sans plomb pour des applications capteurs et transducteurs ultrasonores

Hicham Kacimi-Naciri, Ahmed Bachar, Christian Courtois, Mohamed Rguiti

<div><p>Ce travail de thèse vise à améliorer les propriétés de céramiques sans plomb en utilisant des simulations théoriques pour optimiser les paramètres clés. En se concentrant sur les matériaux BCTZ, KNN et BNT, cette méthode permet de trouver les compositions idéales avant leur...

Mardi des chercheurs, Mar 2024, MONS, Belgique. ⟨hal-05583555⟩

• Poster de conférence

Processus de fabrication de pièces céramiques piézoélectriques par FDM, Piezoelectric ceramic parts manufacturing process by FDM

Soufyane Satha, Mohamed Aymen Ben Achour, Mohamed Rguiti, Christian Courtois

L'objectif de notre étude est la fabrication de structures piézoélectriques complexes en 3d en céramiques et composites sans plomb, pour des applications capteurs et transducteurs à l’aide de la technique fused deposition modeling “FDM”. Cette technique consiste en l’extrusion à chaud d’un..., The objective of our study is the fabrication of complex 3D piezoelectric structures in lead-free ceramics and composites, for sensor and transducer applications using the fused deposition modeling “FDM” technique. This technique consists of the hot extrusion of a thermoplastic filament consisting...

Mardi des chercheurs 2024, Mar 2024, Mons, Belgique. ⟨10.1016/j.scriptamat.2024.115994⟩. ⟨hal-04544805⟩

• Poster de conférence

Challenges in the synthesis &amp; optical characterization of 2D ferroelectric Ba0.85Ca0.15Ti0.9Zr0.1O3 by RF sputtering

Yusuf K Bostan, Florian Jean, Denis Remiens, Jing Hua Teng, El Hadj Dogheche

Ferroelectric materials, such as BaTiO₃ and (Ba,Ca)(Ti,Zr)O₃ (BCTZ), are essential in modern technology, thanks to their permanent electrical dipoles and unique properties like piezoelectricity. These lead-free perovskites are especially valuable, offering tunability for advanced applications such...

Mardi des Chercheurs, Mar 2024, Mons, Belgium. 2024. ⟨hal-04622518⟩

• Pré-publication, Document de travail

Infinitely many normalized solutions of $L^2$-supercritical NLS equations on noncompact metric graphs with localized nonlinearities

Pablo Carrillo, Damien Galant, Louis Jeanjean, Christophe Troestler

We consider the existence of solutions for nonlinear Schr\"odinger equations on noncompact metric graphs with localized nonlinearities. In an $L^2$-supercritical regime, we establish the existence of infinitely many solutions for any prescribed mass.

2024. ⟨hal-04590083⟩

• Pré-publication, Document de travail

Frequency-explicit stability estimates for time-harmonic elastodynamic problems in nearly incompressible materials

Théophile Chaumont-Frelet, Serge Nicaise

2024. ⟨hal-04500252⟩

• Article dans une revue

Virome release of an invasive exotic plant species in southern France

Oumaima Moubset, Denis Filloux, Hugo Fontes, Charlotte Julian, Emmanuel Fernandez, Serge Galzi, Laurence Blondin, Sélim Ben Chehida, Jean-Michel Lett, François Mesléard, Simona Kraberger, Joy M Custer, Andrew Salywon, Elizabeth Makings, Armelle Marais, Frédéric Chiroleu, Pierre Lefeuvre, Darren P Martin, Thierry Candresse, Arvind Varsani, Virginie Ravigné, Philippe Roumagnac

The increase in human-mediated introduction of plant species to new regions has resulted in a rise of invasive exotic plant species (IEPS) that has had significant effects on biodiversity and ecosystem processes. One commonly accepted mechanism of invasions is that proposed by the enemy release...

Virus Evolution, 2024, 10 (1), pp.veae025. ⟨10.1093/ve/veae025⟩. ⟨hal-04562106⟩

• Article dans une revue

Densification of hydroxyapatite through cold sintering process: Role of liquid phase chemistry and physical characteristic of HA powder

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

Hydroxyapatite is a well-known bioactive material widely employed in bone regeneration applications. Densifying hydroxyapatite at the nanoscale remains challenging with conventional sintering methods. This investigation focuses on the densification of commercially available nano-hydroxyapatite...

Open Ceramics, 2024, 17, ⟨10.1016/j.oceram.2024.100566⟩. ⟨hal-04542434⟩

• Article dans une revue

Simulation study of a triboelectric nanogenerator for effective energy harvesting

Meriem Boutaldat, Nabil Chakhchaoui, Adil Eddiai, Mounir Meddad, Omar Cherkaoui, M'Hamed Mazroui, Mohamed Rguiti

Materials Today: Proceedings, 2024, ⟨10.1016/j.matpr.2024.02.013⟩. ⟨hal-05690264⟩

• Pré-publication, Document de travail

Sur les suites des descendants d'un polygone

Aziz El Kacimi Alaoui, Abdellatif Zeggar

Soient P = [A_1 , ..., A_n ] un n-polygone (avec n ≥ 4) du plan euclidien E et λ un réel dans l'intervalle ]0, 1[. On note P_1 = [A′_1 , • • • , A′_n ] le n-polygone dont les sommets A′_1 , • • • , A′_n sont les λ-barycentres A′_k = (1-λ)A_k + λA_{k+1} , avec 1 ≤ k ≤ n et A_{n+1} = A_1 ; on...

2024. ⟨hal-04444952⟩