Determination of Orientational Distribution of Side Chains of Polyimide Layer for Liquid Crystal Alignment by Surface Second-Harmonic Generation

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We have determined the orientational distribution function (ODF) of the side chain polyimide (PI) films used for liquid crystal alignment. The second-harmonic generation (SHG) in four sample geometries were measured as a function of polarizer rotation angle. To determine ODF, we developed a new fitting method of the five layer model using the maximum entropy method. We found that the ODF of the side chains of PI film of the air-side surface is quite different from that of the substrate side.
Publisher
GORDON BREACH PUBLISHING
Issue Date
1998
Language
English
Article Type
Article
Citation

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.316, pp.223 - 226

ISSN
1058-725X
URI
http://hdl.handle.net/10203/72026
Appears in Collection
CH-Journal Papers(저널논문)
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