Proceedings of Japanese Liquid Crystal Society Annual meeting
Online ISSN : 2432-5988
Print ISSN : 1880-3490
ISSN-L : 1880-3490
2010 Japanese Liquid Crystal Society Annual Meeting
Session ID : PB52
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Formation of molecular oriented surface relief gratings with 325nm laser in hydrogen-bonded liquid crystalline copolymer films
*Ayaka Tashima, Mizuho Kondo, Nobuhiro Kawatsuki, Akira Emoto, Hiroshi Ono, Makoto Okada, Shinji Matsui
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Keywords: liquid crystalline copolymer, surface relief formation, photoinduced orientation, holography, diffractive grating
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Abstract
The photo-cross-linkable hydrogen-bonded liquid crystalline copolymers (PLCs) contained cinnamic acid side groups and benzoic acid side groups were synthesized by radical copolymerization. The PLC revealed nematic LC characteristics due to hydrogen-bonded dimmer. Surface relief gratings (SRG) in PLC films were fabricated by using intensity modulated holographic exposing of 325nm He-Cd laser with various polarization. The fabricated SR gratings showed incident polarization dependency of the diffraction efficiencies, which indicates the molecular reorientaion in addition to the SR formation.
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© 2010 Japanese Liquid Crystal Society
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