20 July 2004 Low-frequency dielectric relaxation in liquid crystal-polymer composites
Author Affiliations +
Proceedings Volume 5507, XVI International Conference on Spectroscopy of Molecules and Crystals; (2004) https://doi.org/10.1117/12.569819
Event: XVI International Conference on Spectroscopy of Molecules and Crystals, 2003, Sevastopol, Ukraine
Abstract
The dielectric constants ε′ and ε″ of a series of "liquid crystal (LC) - polymer" composites in the frequency region 10-3-105 Hz are measured. The composites are prepared by a photo-separation method with the variation of polymer content from 0 to 50 weight %. For all samples, a relaxation effect with a low relaxation frequency (10-1-20 Hz) is observed. This effect is assigned to dielectric relaxation in the near-electrode layers. The experimentally observed increase of the relaxation frequency and the electric conductivity with polymer concentration is explained by incomplete phase separation occurred in "liquid crystal - pre-polymer" mixture under irradiation.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
L. Dolgov, L. Dolgov, Oleg V. Yaroshchuk, Oleg V. Yaroshchuk, A. V. Koval'chuk, A. V. Koval'chuk, Diederik S. Wiersma, Diederik S. Wiersma, } "Low-frequency dielectric relaxation in liquid crystal-polymer composites", Proc. SPIE 5507, XVI International Conference on Spectroscopy of Molecules and Crystals, (20 July 2004); doi: 10.1117/12.569819; https://doi.org/10.1117/12.569819
PROCEEDINGS
6 PAGES


SHARE
Back to Top