A comparative study of nematic liquid ...
Document type :
Article dans une revue scientifique: Article original
DOI :
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Title :
A comparative study of nematic liquid crystals doped with harvested and non-harvested ferroelectric nanoparticles: phase transitions and dielectric properties
Author(s) :
Lin, Yaochen [Auteur]
Daoudi, A. [Auteur]
Dubois, F. [Auteur]
Blach, Jean-Francois [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Henninot, Jean-François [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Kurochkin, Oleksandr [Auteur]
Grabar, A. [Auteur]
Segovia-Mera, A. [Auteur]
Legrand, Christian [Auteur]
Douali, Redouane [Auteur]
Daoudi, A. [Auteur]
Dubois, F. [Auteur]
Blach, Jean-Francois [Auteur]

Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Henninot, Jean-François [Auteur]

Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Kurochkin, Oleksandr [Auteur]
Grabar, A. [Auteur]
Segovia-Mera, A. [Auteur]
Legrand, Christian [Auteur]
Douali, Redouane [Auteur]
Journal title :
RSC Advances
Abbreviated title :
RSC Adv.
Volume number :
7
Pages :
35438-35444
Publisher :
Royal Society of Chemistry (RSC)
Publication date :
2017
HAL domain(s) :
Chimie/Chimie inorganique
English abstract : [en]
Harvested and non-harvested tin thiohypodiphosphate (Sn2P2S6) ferroelectric nanoparticles are used to dope the 4-n-octyl-4′-cyanobiphenyl liquid crystal (8CB). Due to their higher average spontaneous polarization, the ...
Show more >Harvested and non-harvested tin thiohypodiphosphate (Sn2P2S6) ferroelectric nanoparticles are used to dope the 4-n-octyl-4′-cyanobiphenyl liquid crystal (8CB). Due to their higher average spontaneous polarization, the harvested nanoparticles have stronger interactions with the liquid crystal molecules which leads to a higher order parameter as demonstrated by the increase in phase transition temperatures. This is confirmed by the results of dielectric characterization. In the homeotropic orientation, the increase in the order parameter leads to a higher dielectric permittivity. In the planar orientation, the coupling between the spontaneous polarization of the nanoparticles and the order parameter induces a slight reorientation of the liquid crystal director from the initial planar orientation, leading to an increase in the dielectric permittivity. This effect is more important for the liquid crystal doped with harvested nanoparticles.Show less >
Show more >Harvested and non-harvested tin thiohypodiphosphate (Sn2P2S6) ferroelectric nanoparticles are used to dope the 4-n-octyl-4′-cyanobiphenyl liquid crystal (8CB). Due to their higher average spontaneous polarization, the harvested nanoparticles have stronger interactions with the liquid crystal molecules which leads to a higher order parameter as demonstrated by the increase in phase transition temperatures. This is confirmed by the results of dielectric characterization. In the homeotropic orientation, the increase in the order parameter leads to a higher dielectric permittivity. In the planar orientation, the coupling between the spontaneous polarization of the nanoparticles and the order parameter induces a slight reorientation of the liquid crystal director from the initial planar orientation, leading to an increase in the dielectric permittivity. This effect is more important for the liquid crystal doped with harvested nanoparticles.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
ENSCL
CNRS
Centrale Lille
Univ. Artois
Université de Lille
CNRS
Centrale Lille
Univ. Artois
Université de Lille
Collections :
Research team(s) :
Couches minces & nanomatériaux (CMNM)
Submission date :
2019-09-25T14:05:39Z
2021-03-29T12:12:46Z
2021-03-29T12:12:46Z
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