Dynamical Properties of Ferroelectric Chiral Liquid Crystals by Electro-Optical and Dielectric Spectroscopy

Structural, electro-optical, and dielectric investigations of a ferroelectric liquid crystal (FLC) exhibiting the chiral smectic C phase (SmC*) are reported. This study has been performed on the pure FLC showing the SmC*-SmA-N* phase sequence and having high spontaneous polarization and a large rela...

Full description

Saved in:
Bibliographic Details
Published inSpectroscopy letters Vol. 41; no. 6; pp. 285 - 291
Main Authors Hemine, J., Daoudi, A., Zazoui, M., Legrand, C., Isaert, N., El kaaouachi, A., Nguyen, H. T.
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 10.09.2008
Subjects
dielectric relaxation spectroscopy
electro-optical study
ferroelectric liquid crystals
Goldstone mode
rotational viscosity
twist elastic constant
Online AccessGet full text

Cover

More Information
Summary:Structural, electro-optical, and dielectric investigations of a ferroelectric liquid crystal (FLC) exhibiting the chiral smectic C phase (SmC*) are reported. This study has been performed on the pure FLC showing the SmC*-SmA-N* phase sequence and having high spontaneous polarization and a large relaxation frequency. We have determined the Goldstone rotational viscosity and the twist elastic constant in the SmC* phase from the experimental data of helical pitch, tilt angle, polarization, dielectric strength, and relaxation frequency of the Goldstone-mode relaxation. An Arrhenius-type behavior of the Goldstone rotational viscosity was obtained, and the corresponding activation energies were evaluated.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0038-7010
1532-2289
DOI:10.1080/00387010802286684