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Article dans une revue

Design hybridization system of TEG/PZT for power generation: Modelling and experiments

Mounir Meddad, Adil Eddiai, Rida Farhan, Seddik Benahadouga, M’hammed Mazroui, Mohamed Rguiti

Energy harvesting aims to feed portable or fix electrical appliances that can be communicated in order to make them energetically autonomous. This Self-powered is more envisageable as the new electronic technologies available are sober in energy. This study focuses on the generation of electrical...

Superlattices and Microstructures, 2019, 127, pp.86-92. ⟨10.1016/j.spmi.2018.03.007⟩. ⟨hal-03478758⟩

Article dans une revue

Evaluation of performance of polyamide/lead zirconate titanate composite for energy harvesters and actuators

Rida Farhan, Mohamed Rguiti, Adil Eddiai, M’hammed Mazroui, Mounir Meddad, Christian Courtois

By means of experimental tools, we have studied the effect of lead zirconate titanate volume fraction introduced in polyamide-6/lead zirconate titanate composites on dielectric, piezoelectric, mechanical, and structural properties. As the first result, we found that the insertion of lead zirconate...

Journal of Composite Materials, 2019, 53 (3), pp.345-352. ⟨10.1177/0021998318783324⟩. ⟨hal-03080537⟩

Article dans une revue

Control of the radiative heating of a semi-transparent body

Hawraa Nabolsi, Luc Paquet, Ali Wehbe

In a preceding paper, we have studied the radiative heating of a semi-transparent body Ω (e.g., glass) by a black radiative source S surrounding it, black source at absolute uniform temperature u(t) at time t between time 0 and time tf, the final time of the radiative heating. This problem has been...

Zeitschrift für Angewandte Mathematik und Physik = Journal of Applied mathematics and physics = Journal de mathématiques et de physique appliquées, 2019, 70 (1), 33 p. ⟨10.1007/s00033-018-1059-x⟩. ⟨hal-03166346⟩

Article dans une revue

Three-dimensional CR submanifolds of the nearly Kähler $$\mathbb {S}^3\times \mathbb {S}^3$$

Miroslava Antić, Nataša Djurdjević, Marilena Moruz, Luc Vrancken

It is known that there exist only four six-dimensional homogeneous non-Kähler, nearly Kähler manifolds: the sphere S6, the complex projective space CP3, the flag manifold F3 and S3×S3. So far, most of the results about submanifolds have been obtained when the ambient space is the nearly Kähler S6....

Annali di Matematica Pura ed Applicata, 2019, 198 (1), pp.227-242. ⟨10.1007/s10231-018-0770-8⟩. ⟨hal-03722186⟩

Article dans une revue

Micropatterning of beta tricalcium phosphate bioceramic surfaces, by femtosecond laser, for bone marrow stem cells behavior assessment

Marie Lasgorceix, Cédric Ott, Laurent Boilet, Stéphane Hocquet, Anne Leriche, Asadian Mahtab, Nathalie De Geyter, Heidi Declercq, Véronique Lardot, Francis Cambier

The bioactivity of synthetic bone implants is highly impacted by their surface topography, especially by the presence of micro-patterns likely to generate cells growth guidance. In this study, laser machining technology was employed in order to produce controlled regular micro-patterns on dense...

Materials Science and Engineering: C, 2019, 95, pp.371-380. ⟨10.1016/j.msec.2018.03.004⟩. ⟨hal-03478975⟩

Article dans une revue

A priori bounds and multiplicity of solutions for an indefinite elliptic problem with critical growth in the gradient

Colette De Coster, Antonio J. Fernández Sánchez, Louis Jeanjean

Let Ω ⊂ RN , N ≥ 2, be a smooth bounded domain. We consider a boundary value problem of the form −∆u = cλ(x)u + µ(x)|∇u|^2 + h(x) , u ∈ H1^0(Ω) ∩ L∞(Ω) where cλ depends on a parameter λ ∈ R, the coefficients cλ and h belong to L^q(Ω) with q > N/2 and µ ∈ L∞(Ω). Under suitable assumptions, but..., Soit Ω ⊂ RN , N ≥ 2, un domaine borné régulier. Nous consid´erons un problème aux limites de la forme −∆u = cλ(x)u + µ(x)|∇u|^2 + h(x) , u ∈ H1^0(Ω) ∩ L∞(Ω) où cλ dépend d’un paramètre λ ∈ R, les coefficients cλ et h sont des fonctions dans L^q(Ω) avec q > N/2 et µ ∈ L∞(Ω). Sous certaines...

Journal de Mathématiques Pures et Appliquées, 2019, 132, pp.308-333. ⟨10.1016/j.matpur.2019.09.011⟩. ⟨hal-02367279⟩

Article dans une revue

Directed, cylindric and radial Brownian webs

David Coupier, Jean-François Marckert, Viet Chi Tran

The Brownian web (BW) is a collection of coalescing Brownian paths (W (x,t) , (x, t) ∈ R 2) indexed by the plane. It appears in particular as continuous limit of various discrete models of directed forests of coalescing random walks and navigation schemes. Radial counterparts have been considered...

Electronic Journal of Probability, 2019, 24 (20), pp.1-48. ⟨10.1214/18-EJP255⟩. ⟨hal-01569036⟩

Article dans une revue

Stability results of some first order viscous hyperbolic systems

Serge Nicaise

In this paper, we first introduce an abstract viscous hyperbolic problem for which we prove exponential decay under appropriated assumptions. We then give some illustrative examples, like the linearized viscous Saint-Venant system. In order to achieve the optimal decay rate, we also perform a...

ESAIM: Control, Optimisation and Calculus of Variations, 2019, 25, pp.33. ⟨10.1051/cocv/2018020⟩. ⟨hal-02952637⟩

Article dans une revue

Femtosecond laser impact on calcium phosphate bioceramics assessed by micro-Raman spectroscopy and osteoblastic behaviour

Marie Lasgorceix, Liliana Grenho, Maria Helena Fernandes, Cédric Ott, Laurent Boilet, Anne Leriche, Fernando Monteiro, Francis Cambier, Stéphane Hocquet

The present work is an investigation of the biological response to the presence of grooves 3 μm deep, 15 μm wide and spaced by 100 μm, produced with femtosecond laser on β-tricalcium phosphate (β-TCP). The heat affected zone generated by the laser irradiation was investigated. Micro-Raman...

Journal of the European Ceramic Society, 2018, 38 (16), pp.5545-5553. ⟨10.1016/j.jeurceramsoc.2018.07.048⟩. ⟨hal-03080557⟩

Article dans une revue

The Helmholtz decomposition in weighted L^p spaces in cones

Serge Nicaise

In this paper we prove the Helmholtz decomposition in conical domains of $R^3$ in weighted $L^p_\beta$ spaces under a spectral condition on $\beta, p$. The basic bricks are the transformation of the original problem into a problem set in cylindrical domains and the combination of a priori bounds...

Bulletin of the Belgian Mathematical Society - Simon Stevin, 2018, 25 (5), ⟨10.36045/bbms/1547780431⟩. ⟨hal-01541298⟩