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Axial and polar orientational changes by rubbing/photoalignment processes in a liquid crystal alignment layer studied by optical second-harmonic generation

Title
Axial and polar orientational changes by rubbing/photoalignment processes in a liquid crystal alignment layer studied by optical second-harmonic generation
Authors
Shioda T.Chung D.-H.Takanishi Y.Ishikawa K.Park B.Takezoe H.
Ewha Authors
박병주
Issue Date
2001
Journal Title
Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
ISSN
0021-4922JCR Link
Citation
vol. 40, no. 4 A, pp. 2387 - 2390
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Molecular reorientation by rubbing and photoalignment processes in polymer alignment layer for liquid crystals has been studied by linear optical absorption and surface optical second-harmonic generation. It was found that rubbing produces polar and axial orders in the photoisomerizable polyamic acid (PAA) containing azobenzene groups in the main chain, while photoalignment after rubbing destroys the polar order but is capable of reorienting the PAA main chain without creating further polar order.
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자연과학대학 > 물리학전공 > Journal papers
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