학술논문
Gamma-radiation exposure-induced modifications in the thermal, dielectric, and electro-optical properties of two-room temperature antiferroelectric liquid crystal mixtures.
Document Type
Article
Author
Source
Subject
*ANTIFERROELECTRIC liquid crystals
*LIQUID mixtures
*PHASE transitions
*TRANSITION temperature
*FERROELECTRIC liquid crystals
*GAMMA rays
*RADIATION exposure
*ARCHITECTURAL acoustics
*POLYMER liquid crystals
*
*
*
*
*
*
*
*
Language
ISSN
0267-8292
Abstract
The influence of different doses of gamma radiation on the phase transition temperatures, permittivity, conductivity, tilt angle, anchoring energy coefficients, spontaneous polarisation, rotational viscosity, and switching time of two-room temperature antiferroelectric liquid crystal (AFLC) mixtures has been investigated. At low radiation exposure, phase transition temperatures and optical tilt angles of the systems decrease slightly, but the effect is significant at high radiation doses. The permittivities as well as the ac and dc conductivities of the mixtures were significantly altered by γ-irradiation. Anchoring energy coefficients, spontaneous polarisation, rotational viscosity and switching time of the mixtures are shown to have a similar type of behaviour in both mixtures at low radiation doses, but their behaviour becomes random at higher levels of γ-irradiation. [ABSTRACT FROM AUTHOR]