Mesogenic and optical properties of α,α′‐bis(4‐alkoxyphenylethynyl)oligothiophenes

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Title:	Mesogenic and optical properties of α,α′‐bis(4‐alkoxyphenylethynyl)oligothiophenes
Authors:	Hsu, Hsiu-fu;Chien, Shih-jay;Chen, Hsiu-hui;Chen, Chien-hsing;Huang, Li-ya;Kuo, Chung-hao;Chen, Kwei-ju;Ong, Chi-wi;Wong, Ken-tsung
Contributors:	淡江大學化學學系
Date:	2005-06
Issue Date:	2011-10-15 23:25:23 (UTC+8)
Publisher:	Taylor & Francis
Abstract:	We have measured the angular distribution of light scattered from PDLC films with micron-sized droplets as a function of film thickness and applied voltage. We find that a single scattering picture does not give a good description of the observed scattered intensity. In particular, the intensity falls off much more weakly with scattering angle than one would predict from the anomalous diffraction cross-section calculated by Zumer. We present a simple model for describing double and higher order scattering events that gives a better quantitative description of the experimental observations. The model can be combined with a model for the switching behaviour of PDLC films to describe the scattering as a function of the applied voltage.
Relation:	Liquid crystals 32(6), pp.1683-1689
DOI:	10.1080/02678290500125863
Appears in Collections:	[Graduate Institute & Department of Chemistry] Journal Article

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