Electric-field-induced nematic-cholesteric transition and 3-D director structures in homeotropic cells
Soft Condensed Matter
2012-08-27 v1 Materials Science
Abstract
We study the phase diagram of director structures in cholesteric liquid crystals of negative dielectric anisotropy in homeotropic cells of thickness d which is smaller than the cholesteric pitch p. The basic control parameters are the frustration ratio d/p and the applied voltage U. Fluorescence Confocal Polarising Microscopy allows us to directly and unambiguously determine the 3-D director structures. The results are of importance for potential applications of the cholesteric structures, such as switchable gratings and eyewear with tunable transparency based.
Keywords
Cite
@article{arxiv.cond-mat/0512365,
title = {Electric-field-induced nematic-cholesteric transition and 3-D director structures in homeotropic cells},
author = {I. I. Smalyukh and B. I. Senyuk and P. Palffy-Muhoray and O. D. Lavrentovich and H. Huang and E. C. Gartland, and V. H. Bodnar and T. Kosa and B. Taheri},
journal= {arXiv preprint arXiv:cond-mat/0512365},
year = {2012}
}
Comments
Will be published in Physical Review E