Presentation 2011-01-29
Control of easy axes on rubbed polyvinyl-cinnamate alignment film by materials of nematic liquid crystal
Rumiko Yamaguchi, Masaki Ikeya,
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Abstract(in English) Polyvinyl-cinnamate (PVCi) is well known as a photo crosslinkable polymer to align liquid crystal (LC) molecules by a linearly polarized UV (LPUV) light exposure. In addition, it has been recognized that the easy axis is perpendicular to the rubbing direction, since sidechains of PVCi are oriented perpendicular to the main chains. However, we found that MBBA (N-p-methoxybenzylidene p-n-butylaniline) aligns parallel to the rubbing direction. In this study, the in-plane easy axis of LCs with different chemical structures has been investigated on the rubbed PVCi surface. We reported that LCs with and without polar groups aligned perpendicular and parallel to a rubbing direction on a rubbed PVCi surface, respectively. Easy axis control of the PVCi was realized by mixing LCs and an alignment patterning was successfully demonstrated on crosslinked and uncrosslinked surfaces by exposing with and without unpolarized UV light.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Nematic liquid crystal / Alignment film / Rubbing / Easy axis / polyvinyl-cinnamate
Paper # EID2010-33
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Conference Information
Committee EID
Conference Date 2011/1/21(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Control of easy axes on rubbed polyvinyl-cinnamate alignment film by materials of nematic liquid crystal
Sub Title (in English)
Keyword(1) Nematic liquid crystal
Keyword(2) Alignment film
Keyword(3) Rubbing
Keyword(4) Easy axis
Keyword(5) polyvinyl-cinnamate
1st Author's Name Rumiko Yamaguchi
1st Author's Affiliation Department of Electrical and Electronic Engineering Graduate School of Engineering and Resource Science()
2nd Author's Name Masaki Ikeya
2nd Author's Affiliation Department of Electrical and Electronic Engineering Graduate School of Engineering and Resource Science
Date 2011-01-29
Paper # EID2010-33
Volume (vol) vol.110
Number (no) 404
Page pp.pp.-
#Pages 4
Date of Issue