화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals, Vol.541, 474-480, 2011
Dielectric Spectroscopy of Wide Temperature Range Nematic Liquid Crystal Mixtures
The dielectric studies in two nematic liquid crystal mixtures (E-201, E-47) in the frequency range of 50 Hz-1 MHz and theoretically calculated up to the extended frequency range have been investigated. The real and imaginary parts of dielectric constant at low frequencies exhibit a significant contribution of conductivity. The corrected dielectric parameters show Debye-type dispersion with symmetric distribution of relaxation times. Our results indicate that dielectric increment, empirical-factor and static permittivity vary with temperature. A well known Fuoss - Kirkwood method was used to analyze the dielectric parameters.