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NCUEIR > College of Science > Graduate Institute of Photonics Technologies > Periodical Articles > Item 987654321/15079

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/15079

Title:	Scattering Light Interference from Liquid Crystal Polymer Dispersion Films
Authors:	Huang, Chi-Yen;Tsai, Ming-Shann;Lin, Chi-Huang;Fuh, Andy Ying-Guey
Contributors:	光電科技研究所
Keywords:	Liquid crystals;Polymer network;Quetelet-type ring
Date:	2002-03
Issue Date:	2013-01-07T02:10:17Z
Publisher:	The Japan Society of Applied Physics
Abstract:	The Q�etelet-type ring pattern is observed in liquid crystal polymer dispersion (LCPD) films. The clusters of the polymer network and liquid crystal (LC) domains with different director axes in the LCPD films serve as scatterers. Cells with unidirectional and multidirectional rubbings are fabricated. Experimental results show that the polarization of incident light, the applied voltage and the ambient temperature significantly affect the ring intensities. However, the contribution of the LC domains is not evident until the voltage is applied. Finally, rubbing the cells in multiple directions reveals that measurement of the Q�etelet-type ring intensity can be used to readily identify the orientation of the liquid crystals. This finding also reveals that the LCs in an LCPD mixture are aligned closer to the final rubbing direction than are pure LCs in a multidirectional rubbed cell. A simple model was proposed to explain the observations.
Relation:	Jpn. J. Appl. Phys., 41(3A): 1436-1440
Appears in Collections:	[Graduate Institute of Photonics Technologies] Periodical Articles

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