Publications

• Poster de conférence

Influence du dopage (Ti, Zr, Hf) sur les propriétés structurales et électromécaniques de KNN

Hicham Kacimi-Naciri, Mohamed Rguiti, Ahmed Bachar, Assia Mabrouk, Mohamed Aymen Ben Achour, Christian Courtois, Yannick Lorgouilloux

Les matériaux piézoélectriques sans plomb constituent une alternative aux PZT largement utilisées. Cette étude, basée sur la DFT (Density Fonctional Theory), analyse les propriétés structurales, électroniques, mécaniques et piézoélectriques de K0.5Na0.5NbO3 pur et dopé par Ti, Zr et Hf. Les…

Mardi des chercheurs, Mar 2026, MONS, Belgium. ⟨hal-05583561⟩

• 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⟩

• Article dans une revue

Sex-specific lymphatic responses to estrogen shape atherosclerosis in high-risk mice

Mona Mesples, Élizabeth Lacroix, Nolwenn Tessier, Maya Farhat, Andreea Milasan, Sara Babran, Cristina Fernandez, Tally Latendresse, Justin Benoit, Valérie Long, Julie Guillemette, Sami El Khakani, Azadeh Alikashani, Charles-Alexandre Leblanc, Marie-Ève Higgins, Vanessa Durocher-Granger, Céline Fiset, Catherine Martel

Introduction Atherosclerosis, the cholesterol-driven inflammatory process underlying cardiovascular disease (CVD), remains the leading cause of death in high-income countries despite major advances in risk factor management. This underscores the urgent need for therapies that directly target plaque…

Frontiers in Cardiovascular Medicine, 2026, 13, pp.1699372. ⟨10.3389/fcvm.2026.1699372⟩. ⟨hal-05648779⟩

• Pré-publication, Document de travail

Scalable multitask Gaussian processes for complex mechanical systems with functional covariates

Razak Christophe Sabi Gninkou, Andrés F. López-Lopera, Franck Massa, Rodolphe Le Riche

Functional covariates arise in many scientific and engineering applications when model inputs take the form of time-dependent or spatially distributed profiles, such as varying boundary conditions or changing material behaviours. In addition, new practices in digital simulation require predictions…

2026. ⟨hal-05524247v2⟩

• Article dans une revue

Scalable Sparse Co-Kriging for Multi-Fidelity Data Fusion : An Application to Aerodynamics

Mauricio Castaño-Aguirre, Andrés F. López-Lopera, Nathalie Bartoli, Franck Massa, Thierry Lefebvre

Multi-fidelity Kriging surrogate modeling combines data of varying accuracy, such as experimental tests and numerical simulations, to improve predictive performance. Autoregressive models are commonly used to capture correlations across fidelity levels, offering interpretability compared to purely…

Reliability Engineering and System Safety, 2026, 272 (1), ⟨10.1016/j.ress.2026.112485⟩. ⟨hal-05530684v2⟩

• Article dans une revue

First-principles theoretical study of pure and Ti, Zr, and Hf doped K0.5Na0.5NbO3: Structural, electronic, mechanical, and piezoelectric properties

Hicham Kacimi-Naciri, Mohamed Rguiti, Assia Mabrouk, Rachid Amrousse, Christian Courtois, Mohamed Aymen Ben Achour, Ahmed Bachar

Lead-free piezoelectric materials are gaining attention as environmentally sustainable alternatives to lead zirc­onate titanate (PZT)-based ceramics. Among these, potassium-sodium niobate (K0.5Na0.5NbO3, KNN) shows promising piezoelectric properties but faces challenges in densification and…

Ceramics International, 2026, 52 (7), pp.8607-8618. ⟨10.1016/j.ceramint.2026.01.059⟩. ⟨hal-05583201⟩

• Article dans une revue

Enhanced relaxor ferroelectric and high energy-storage performance in lead-free Ba0.85Sr0.15Ti0.85Zr0.15O3 ceramic: Correlation between diffuse phase transition and polar nano-region dynamics

Y. Moualhi, F. Bahri, M. Rguiti, H. Rahmouni

Lead-free BaTiO3-based ferroelectrics are promising candidates for environmentally friendly electronic and energy-storage applications. In this study, Ba0.85Sr0.15Ti0.85Zr0.15O3 ceramics were synthesized via the conventional solid-state reaction method to investigate the influence of Sr and Zr…

Journal of Power Sources, 2026, 672, pp.239590. ⟨10.1016/j.jpowsour.2026.239590⟩. ⟨hal-05687762⟩

• Communication dans un congrès

Synthesis of doped biphasic calcium phosphate for bone substitutes.

Vincent Gillet, Marie Lasgorceix, Florian Jean, Anne Leriche, Stephane Hocquet

Among synthetic bone substitutes, calcium phosphate materials such as β-tricalcium phosphate (β-TCP, β-Ca₃(PO₄)₂) and hydroxyapatite (HA, Ca₁₀(PO₄)₆(OH)₂) are widely used due to their excellent biocompatibility and osteoconductive properties. However, these two phases exhibit different resorption…

19th European Inter-Regional Conference on Ceramics (CIEC 19), Feb 2026, Leoben, Austria. ⟨hal-05583051⟩

• Article dans une revue

Enhanced β-phase formation and multifunctional properties of PVDF-HFP/PMMA/graphene oxide nanocomposite films for potential energy harvesting applications

Khadija Oumghar, Said Douhi, Mounir El Achaby, Mohamed Rguiti, Omar Cherkaoui, Adil Eddiai

Diamond and Related Materials, 2026, 163, pp.113432. ⟨10.1016/j.diamond.2026.113432⟩. ⟨hal-05687776⟩

• Article dans une revue

Equivalence between VMO functions and plurisubharmonic functions with zero Lelong numbers

Séverine Biard, Jujie Wu

<div><p>We prove that a plurisubharmonic function on a domain in the complex Euclidean space is a locally VMO (Vanishing Mean Oscillation) function if and only if its Lelong number at each point vanishes. We also give a global version of this result when the boundary of the domain…

Mathematische Zeitschrift, 2026, 312 (2), pp.60. ⟨10.1007/s00209-026-03952-6⟩. ⟨hal-05478910⟩