Publicaciones

• Thèse

Développement de capteurs interdigités à ondes acoustiques de surface pour l'estimation de l'humidité dans des structures en béton, Development of surface acoustic wave interdigitated sensors for humidity estimation in concrete structures

Saliou Ndao

Dans ce travail, nous avons développé des capteurs ultrasonores interdigités (IDT) d’humidité exploitant des ondes acoustiques de surface (SAW) de type Rayleigh. Ces capteurs SAWIDT sont destinés à suivre d’une part l’humidité ambiante dans les bétons du génie civil et d’autre part, le monitoring..., In this work, we have developed ultrasonic humidity interdigital (IDT) sensors exploiting Rayleigh type Surface Acoustic Waves (SAW). These SAW-IDT sensors are intended to monitor ambient humidity in civil engineering concretes and to monitor the refractory concretes drying at high temperatures (up...

Acoustique [physics.class-ph]. Université Polytechnique Hauts-de-France, 2020. Français. ⟨NNT : 2020UPHF0005⟩. ⟨tel-03156339⟩

• Article dans une revue

Weighted-$L^2$ polynomial approximation in $\mathbb {C}$

Séverine Biard, John Erik Fornæss, Jujie Wu

We study the density of polynomials in H2(Ω, e−φ), the space of square integrable holomorphic functions in a bounded domain Ω in C, where φ is a subharmonic function. In particular, we prove that the density holds in Carath´eodory domains for any subharmonic function φ in a neighborhood of Ω. In...

Transactions of the American Mathematical Society, 2020, 373 (2), pp.919-938. ⟨10.1090/tran/7935⟩. ⟨hal-03207780⟩

• Communication dans un congrès

Synthesis of substituted β-tricalcium phosphate powders to improve their thermal stability and biological properties for bone regeneration

Anne Leriche, Nicolas Somers, Anthony Thuault, Fabrice Petit, Marie Lasgorceix, Florian Jean

44th International Conference and Expo on Advanced Ceramics and Composites (ICACC 2020), Jan 2020, Daytona Beach (Florida), United States. ⟨hal-04392017⟩

• Communication dans un congrès

Influence of calcium phosphate ceramic substrate surface properties on biological cell invasion

Marie Lasgorceix, Shaan Chamary, Nicolas Somers, Jean-Christophe Hornez, Laurent Boilet, Stephane Hocquet, Albena Daskalova, Francis Cambier, Anne Leriche

44th International Conference and Expo on Advanced Ceramics and Composites (ICACC 2020), Jan 2020, Daytona Beach (Florida), United States. ⟨hal-04392008⟩

• Article dans une revue

Synthesis, crystal structure and magnetic behavior of a new calcium magnesium and iron orthophosphate Ca2MgFe2(PO4)4

Ahmed Ould Saleck, Cyrille Albert-Mercier, Claudine Follet-Houttemane, Olivier Mentré, Abderrazzak Assani, M. Saadi, L. El Ammari

The structure of the new calcium magnesium iron orthophosphate, Ca2MgFe2(PO4)4 was determined from single crystal X-ray diffraction data. It crystallizes in the orthorhombic system, space group Pbca, with all atoms in general positions among which two sites are disordered. The crystal structure of...

Journal of Solid State Chemistry, 2020, 292, pp.121715. ⟨10.1016/j.jssc.2020.121715⟩. ⟨hal-03094584⟩

• Rapport

La vague dans la matrice, The Wave in the Matrix

Gaëtan Robillard, Caterina Calgaro, Emmanuel Creusé

La Vague dans la matrice examine la relation entre mathématiques et environnement, en particulier la façon dont les sciences du climat inscrivent de nouveaux signes dans le monde. Le travail se matérialise dans un réseau de surfaces en cuivre et de processeurs qui simulent un champ de vagues généré...

[Rapport de recherche] Université de Lille (2018-..). 2020, pp.2020:02. ⟨hal-03133380⟩

• Article dans une revue

A combined finite volume - finite element scheme for a low-Mach system involving a Joule term

Caterina Calgaro, Claire Colin, Emmanuel Creusé

In this paper, we propose a combined finite volume-finite element scheme, for the resolution of a specific low-Mach model expressed in the velocity, pressure and temperature variables. The dynamic viscosity of the fluid is given by an explicit function of the temperature, leading to the presence of...

AIMS Mathematics, 2020, 5 (1), pp.311-331. ⟨10.3934/math.2020021⟩. ⟨hal-02398893⟩

• Article dans une revue

Nonexistence of Levi flat hypersurfaces with positive normal bundle in compact Kähler manifolds of dimension ≥3

Séverine Biard, Andrei Iordan

Let [Formula: see text] be a compact connected Kähler manifold of dimension [Formula: see text] and [Formula: see text] a [Formula: see text] Levi flat hypersurface in [Formula: see text]. Then the normal bundle to the Levi foliation does not admit a Hermitian metric with positive curvature along...

International Journal of Mathematics, 2020, 31 (01), pp.2050004. ⟨10.1142/S0129167X20500044⟩. ⟨hal-02985883⟩

• Article dans une revue

Qualitative analysis of a curvature equation modeling MEMS with vertical loads

Chiara Corsato, Colette De Coster, Franco Obersnel, Pierpaolo Omari

We investigate existence, multiplicity and qualitative properties of the solutions of the Dirichlet problem for the singularly perturbed prescribed mean curvature equation - (1 - bu) div(\frac{\nabla u}{\sqrt{1 + |\nabla u|^2}}\Big) = frac{a}{(u-R)^2} +\frac{b}{\sqrt{1 + |\nabla u|^2}}, in \Omega,...

Nonlinear Analysis: Real World Applications, 2020, 55, pp.103123. ⟨10.1016/j.nonrwa.2020.103123⟩. ⟨hal-03721631⟩

• Article dans une revue

Mechanical properties of thermally sprayed porous alumina coating by Vickers and Knoop indentation

Ghailen Ben Ghorbal, Arnaud Tricoteaux, Anthony Thuault, H. Ageorges, F. Roudet, D. Chicot

Depending on the thermal spraying conditions, coatings obtained can present different defects, like pores, cracks and/or unmelted particles, and different surface roughnesses, that can affect the determination of the hardness and elastic modulus. The present work investigates the mechanical...

Ceramics International, 2020, 46 (12), pp.19843-19851. ⟨10.1016/j.ceramint.2020.05.039⟩. ⟨hal-02937709⟩