R
Redouane Douali
Researcher at University of the Littoral Opal Coast
Publications - 63
Citations - 597
Redouane Douali is an academic researcher from University of the Littoral Opal Coast. The author has contributed to research in topics: Dielectric & Liquid crystal. The author has an hindex of 12, co-authored 60 publications receiving 477 citations. Previous affiliations of Redouane Douali include university of lille.
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On the molecular interpretation of the dielectric relaxation of nematic liquid crystals
TL;DR: In this paper, the authors presented the results of studies of the dielectric relaxation of 6CHBT obtained for different values of the angle between the directions of the macroscopic orientation of the sample (director n) and the probing electric field E. A model of the molecular dynamics in the oriented nematics is proposed.
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Static and dynamic dielectric properties of strongly polar liquids in the vicinity of first order and weakly first order phase transitions.
TL;DR: It is shown that the critical temperature dependence of the permittivity and the activation energy can be described with a function of (T-T*)(-alpha) type, with the same values of the temperature of virtual transition of the second order (T*) and the critical exponent (alpha).
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Dielectric and viscous properties of 6CHBT in the isotropic and nematic phases
TL;DR: In this paper, the results of measurements of the principal electric permittivities ∊ ∥*(T, ω and ∊⊥ *(T, ω) and the viscosity for 4-(trans-4-n-hexylcyclohexylhexyl)isothiocyanatobenzene (C6H13-CyHx-Bz-N=C=S, 6CHBT) were presented.
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A comparative study of nematic liquid crystals doped with harvested and non-harvested ferroelectric nanoparticles: phase transitions and dielectric properties
Y. Lin,A. Daoudi,Frédéric Dubois,Jean-François Blach,J. F. Henninot,O. Kurochkin,A. Grabar,A. Segovia-Mera,Christian Legrand,Redouane Douali +9 more
TL;DR: In this article, the authors used harvested and non-harvested tin thiohypodiphosphate (Sn2P2S6) ferroelectric nanoparticles to dope the 4n-octyl-4′-cyanobiphenyl liquid crystal (8CB).
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Structural, spectroscopic and dielectric properties of Ca-doped BaTiO 3
Mohamed Hassen Khedhri,Najmeddine Abdelmoula,Hamadi Khemakhem,Redouane Douali,Frédéric Dubois +4 more
TL;DR: In this paper, the characterization of nanopowders and ceramics using X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence (PL), dielectric measurements, FTIR and Raman spectroscopy is carried out.