Title: Spectral Variations in Selective Reflection in Cholesteric Liquid Crystals Containing Opposite-Handed Chiral Dopants
Authors: Liu, Yu-Jen
Wu, Po-Chang
Lee, Wei
交大名義發表
影像與生醫光電研究所
National Chiao Tung University
Institute of Imaging and Biomedical Photonics
Keywords: chiral dopant;phase diagrams;color variation;Liquid crystals
Issue Date: 13-Jun-2014
Abstract: The optical properties of cholesteric liquid crystal (CLC) containing a nematic host dispersed with a binary chiral dopant were investigated. The binary dopant was composed of a right-hand twist (RT) chiral agent and a left-hand twist (LT) chiral agent whose helical twisting power was much smaller than that of the RT one. With a fixed content of the RT additive, we found that the sample redshifts in central wavelength of the selective reflection as the concentration of the LT agent increases, presumably due to the increasing helical pitch caused by the racemic effect. Some other interesting results including the dopant-content and temperature dependence of the optical properties are addressed.
URI: http://dx.doi.org/10.1080/15421406.2014.918301
http://hdl.handle.net/11536/25238
ISSN: 1542-1406
DOI: 10.1080/15421406.2014.918301
Journal: MOLECULAR CRYSTALS AND LIQUID CRYSTALS
Volume: 596
Issue: 1
Begin Page: 37
End Page: 44
Appears in Collections:期刊論文


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