Publications

• Article dans une revue

Adaptive sparse-knot spline models for approximating sequences of noisy data points in arbitrary-dimensional spaces

Thierry Bay, Carolina Vittoria Beccari, Lucia Romani, Laura Saini

We address the problem of adaptive approximation of sequences of noisy data points in arbitrary-dimensional spaces using spline models of any degree and smoothness. Knot vectors are determined as solutions of unconstrained sparse optimization problems, yielding a flexible and compact representation…

Computer-Aided Design, 2026, 201, pp.104160. ⟨10.1016/j.cad.2026.104160⟩. ⟨hal-05740393⟩

• Article dans une revue

Stabilization of the nonlinear KdV equation with a saturated boundary delayed term

Natàlia Lucas, Emmanuelle Crépeau

We address the nonlinear KdV equation with saturation and delay effects on the boundary. Exponential stability is established under appropriate assumptions using two different approaches: a Lyapunov functional method, which requires a restrictive condition on the domain length, and an approach…

Systems and Control Letters, 2026, 216, pp.106517. ⟨10.1016/j.sysconle.2026.106517⟩. ⟨hal-05678947⟩

• Article dans une revue

Predictive Mastercurves for Direct Ink Writing: Application to Sustainable and Piezoelectric PLA‐Anisole Inks

Mathilde Delcourt, Caroline Duc, Tom Lacassagne, Lucas Vernagut, Mohamed Aymen Ben Achour, Sébastien Charlon, Cédric Samuel

Direct ink writing represents a straightforward printing technique for functional inks. Predicting their behavior is of prime importance to optimize ink formulations for high‐quality printed designs. DIW behaviors of sustainable and Newtonian PLA‐anisole inks are here investigated along with…

Advanced Materials Technologies, 2026, 11 (15), ⟨10.1002/admt.71226⟩. ⟨hal-05724956⟩

• Article dans une revue

Additive manufacturing of NBT-6BT piezoceramics by stereolithography (SLA): processing window, post-treatment optimization and functional properties

Anass Chrir, Mohamed Rguiti, Mohamed Ben Achour, Rabie Aloui, Barbara Lafarge, Yannick Lorgouilloux, Christian Courtois

0.94(Na0.5Bi0.5)TiO3-0.06BaTiO3 (NBT-6BT) lead-free piezoceramic parts were fabricated by laser stereolithography (SLA) from highly loaded photocurable slurries, followed by thermal debinding and sintering. Two slurries (30 and 35 vol%) were formulated and exhibited shear-thinning behavior suitable…

Journal of the European Ceramic Society, 2026, 46 (16), pp.118687. ⟨10.1016/j.jeurceramsoc.2026.118687⟩. ⟨hal-05695536⟩

• Article dans une revue

First-principles analysis of Sr-doped BaTiO3 perovskites’ structural, optical, and thermoelectric properties

Hicham Kacimi-Naciri, Siham Malki, Meriem Ben Zennou, Assia Mabrouk, Mohamed Rguiti, Rachid Amrousse, Nadia Faska, Ahmed Bachar

The influence of strontium (Sr) incorporation on the crystal structure of barium titanate (BaTiO 3 ) has been extensively studied using density functional theory (DFT) calculations with the WIEN2k package and the GGA-PBE method, resulting in significant improvements in its optical and transport…

Results in Physics, 2026, 86, pp.108682. ⟨10.1016/j.rinp.2026.108682⟩. ⟨hal-05625182⟩

• Article dans une revue

Multiscale characterization and CFD-driven optimization of 3D-printed geopolymer composites for high-temperature molds

Abrar Gasmi, Christine Pélegris, Mohamed Guessasma, Ralph Davidovits, Florian Jean, Anthony Thuault, Richard Ball

This study investigated the development of geopolymer formulations suitable for additive manufacturing, with a particular focus on their thermo-mechanical performance under high-temperature service conditions. The materials were designed to withstand temperatures up to 800 °C while exhibiting…

Ceramics International, 2026, ⟨10.1016/j.ceramint.2026.06.272⟩. ⟨hal-05692978⟩

• Article dans une revue

Experimental and DFT study of the structural, electronic, and thermoelectrical properties of Li3xLa2/3-xTiO3 (x = 0.125) ceramic leads free for battery applications

Hicham Kacimi-Naciri, Meriem Ben Zennou, Assia Mabrouk, Amine El Azizi, Mohamed Loutou, Mohammed Mansori, Rachid Amrousse, Nadia Faska, Ahmed Bachar

We synthesized Li3xLa2/3− xTiO3 (LLTO, x = 0.125) via solid-state sintering, yielding a structurally stable orthorhombic perovskite with high environmental compatibility. The resulting material was characterized experimentally through X-ray diffraction (XRD), dielectric measurements (permittivity…

Next Materials, 2026, 11, pp.101619. ⟨10.1016/j.nxmate.2026.101619⟩. ⟨hal-05583221⟩

• Article dans une revue

Mathématiques et langage(s) : une approche historique

Francois Goichot, Rossana Tazzioli, Thomas de Vittori

La Gazette de la Société mathématique de France, 2026, 188, p. 22-29. ⟨hal-05664214⟩

• Article dans une revue

Comprehensive study of Al-doped BaTiO3 ceramics: From doping optimization to electromechanical enhancement for piezoelectric applications

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

BaTiO3 piezoelectric ceramics are mainly used for capacitors. However, their potential as sensors and transducers remains limited due to their moderate piezoelectric sensitivity and energy conversion efficiency. Furthermore, most dopants used for enhancing piezoelectricity often reduce the Curie…

Journal of the European Ceramic Society, 2026, 46 (11), pp.118330. ⟨10.1016/j.jeurceramsoc.2026.118330⟩. ⟨hal-05582330⟩

• Article dans une revue

Synthesis and structural study of new phosphates: AMg2Fe(PO4)3 (A = Sr or Ba) with the α-CrPO4 structure type

Ahmed Ould Saleck, Abderrazzak Assani, Mohamed Saadi, Cyrille Albert-Mercier, Claudine Follet-Houttemane, Lahcen El Ammari

Single crystals of new orthophosphates AMg 2 Fe(PO 4 ) 3 (A = Sr or Ba) have been synthesized by solid-state reaction. From single crystal X-ray diffraction data, their corresponding crystal structures were solved in the orthorhombic system, with the Imma space group and unit cell parameters a = 10…

Comptes Rendus. Chimie, 2026, 29 (G1), pp.145-153. ⟨10.5802/crchim.442⟩. ⟨hal-05577899⟩