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Article dans une revue

Morphological, structural, electrical, and piezoelectric analysis of hydrothermally grown ZnO nanowires on various substrates

Abderrahmane Hamdi, Ahmad Hamieh, Mervat Alamri, Karim Dogheche, M.M. Saj Mohan, Rachel Desfeux, Denis Remiens, El Hadj Dogheche

In this present work, we have successfully fabricated a piezoelectric structure based on ZnO nanowires (ZnO NWs) using a simple, low cost and environmentally friendly hydrothermal method. This structure forms the basis to fabricate vertically integrated nanogenerator device. This paper attempts to…

Surfaces and Interfaces, 2022, 31, 12 p. ⟨10.1016/j.surfin.2022.102103⟩. ⟨hal-03694897⟩

Article dans une revue

Mechanical and optical properties of MgAl2O4 ceramics and ballistic efficiency of spinel based armour

Caroline Gajdowski, Raffaele d'Elia, Norbert Faderl, Judith Böhmler, Yannick Lorgouilloux, Sébastien Lemonnier, Anne Leriche

This study was devoted to the understanding of the influence of MgAl2O4 ceramic properties on their ballistic performances. By modifying the processing parameters, ceramics with different microstructures were obtained. Among them, a transparent MgAl2O4 spinel with an in-line transmission between 77…

Ceramics International, 2022, 48 (13), pp.18199-18211. ⟨10.1016/j.ceramint.2022.03.079⟩. ⟨hal-03850557⟩

Article dans une revue

Modeling and electromechanical performance analysis of polyvinylidene difluoride/textile‐system for energy harvesting from the human body toward a novel class of self‐powered sensors

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

Because batteries' ability to power portable and wireless devices is limited, a great deal of research has been conducted on energy harvesting technology as a self-power source for portable devices. Harvesting mechanical energy from human motion is an attractive approach to obtaining green and…

Polymers for Advanced Technologies, 2022, ⟨10.1002/pat.5773⟩. ⟨hal-03703077⟩

Article dans une revue

Investigating Potential Effects of Ultra-Short Laser-Textured Porous Poly-ε-Caprolactone Scaffolds on Bacterial Adhesion and Bone Cell Metabolism

Emil Filipov, Liliya Angelova, Sanjana Vig, Maria Helena Fernandes, Gérard Moreau, Marie Lasgorceix, Ivan Buchvarov, Albena Daskalova

Developing antimicrobial surfaces that combat implant-associated infections while promoting host cell response is a key strategy for improving current therapies for orthopaedic injuries. In this paper, we present the application of ultra-short laser irradiation for patterning the surface of a 3D…

Polymers, 2022, 14 (12), pp.2382. ⟨10.3390/polym14122382⟩. ⟨hal-03889917⟩

Article dans une revue

Young Ceramists in the Spotlight

Erkka Frankberg, Andraž Kojcan, Marie Lasgorceix, Antonia Ressler, Nicolas Somers, Laura Katariina Tianien, María Canillas Pérez

The Young Ceramists Network (YCN) was established by the European Ceramic Society (ECerS) to build a platform to promote the networking between young researchers and professionals that are active in the ceramic-related fields worldwide from academia to the industrial sector. With the help of the…

Open Ceramics, 2022, 10, 1 p. ⟨10.1016/j.oceram.2022.100271⟩. ⟨hal-04313364⟩

Article dans une revue

Study of structural, impedance spectroscopy and dielectric properties of Li and Al co-doped Ba0.85Ca0.15Ti0.9Zr0.1O3 ceramics

Naima Zidi, Ahcène Chaouchi, Mohamed Rguiti, Yannick Lorgouilloux, Christian Courtois

In this work, we investigate the effect of lithium and aluminium co-doping (0, 0.1, 0.2, and 0.3 mol%) on the phase formation, microstructure, dielectric, and electrical properties of (Ba0.85Ca0.15) (Ti0.90Zr0.10)O3 ceramics prepared by solid state reaction method. Rietveld refinement of X-ray…

Journal of Materials Science: Materials in Electronics, 2022, 33 (18), pp.14468-14487. ⟨10.1007/s10854-022-08369-5⟩. ⟨hal-03703115⟩

Article dans une revue

Sequential construction and dimension reduction of Gaussian processes under constraints

François Bachoc, Andrés F. López-Lopera, Olivier Roustant

Accounting for inequality constraints, such as boundedness, monotonicity or convexity, is challenging when modeling costly-to-evaluate black box functions. In this regard, finite-dimensional Gaussian process (GP) regression models bring a valuable solution, as they guarantee that the inequality…

SIAM Journal on Mathematics of Data Science, 2022, 4 (2), pp.772-800. ⟨10.1137/21M1407513⟩. ⟨hal-03614303⟩

Article dans une revue

Role of polarization signals effects of electrostrictive polymers in the energy harvesting

A. Benbella, I. Matrane, A. Eddiai, M. Meddad, M. Rguiti, M. Mazroui

In the last decades, research into the electrostrictive ploymers as promising materials for energy harvesting using its ability to convert mechanical to electrical energy is beginning to reveal its potential for this application. These materials exhibit a strong electro-mechanical coupling and are…

Materials Today: Proceedings, 2022, ⟨10.1016/j.matpr.2022.05.474⟩. ⟨hal-03703102⟩

Article dans une revue

Design and numerical simulation of a piezoelectric harvester using PVDF polymer for keyboard application

Madiha Yessari, Najoua Fangachi, Mohamed Rguiti, Abdelowahed Hajjaji

Finding new energy sources has received in recent years a particular interest among scientists. Our research focuses on the generation of micro-renewable energy. This energy is used to power various wireless devices, such as sensors, actuators and micro-electromechanical systems (MEMS). In this…

Materials Today: Proceedings, 2022, 66, pp.365 - 372. ⟨10.1016/j.matpr.2022.05.545⟩. ⟨hal-03703093⟩

Article dans une revue

Mechanical and sandblasting erosion resistance characterization of chemical strengthened float glass, Caracterización de la resistencia a la erosión mecánica por arenado de vidrio flotado templado químicamente

Oumessad Gridi, Zahra Malou Hamidouche, Christine Kermel, Anne Leriche

The purpose of this work is to study the influence of the immersion temperature and the treatment time of the ion exchange of soda-lime glass in molten KNO3 bath on its mechanical properties, and in particular the erosion resistance using Sahara sand and alumina abrasives. EDS analysis showed that…, El propósito de este trabajo es estudiar la influencia de la temperatura y el tiempo de inmersión en un baño de nitrato de potasio (KNO3) fundido en el comportamiento mecánico de un vidrio sodocálcico. La extensión del proceso de intercambio iónico se ha caracterizado mediante microanálisis por…

Boletín de la Sociedad Española de Cerámica y Vidrio, 2022, 61 (3), pp.229-240. ⟨10.1016/j.bsecv.2020.11.004⟩. ⟨hal-04491886⟩