NDLI: Zenithal alignment of liquid crystal on homeotropic polyimide film irradiated by ion beam

Content Provider	PubMed Central
Author	Choi, Yoonseuk Yoon, Tae-hoon Kwon, Jin Hyuk Yi, Jonghoon Gwag, Jin Seog
Copyright Year	2012
Abstract	We investigate the pretilt characteristics of a nematic liquid crystal [LC] in terms of ion beam exposure conditions on the homeotropic polyimide alignment layer. The pretilt angle of LCs in the case of high-energy ion beam treatment was decreased considerably almost the same to that of the homogenous alignment layer though we used homeotropic polyimide film at first. Increasing irradiating energy, we could control the pretilt from 90° to 1° with several steps. We believe that this is because the side chain with hydrophobicity in the used polyimide is broken by ion beam exposure. To confirm it, contact angle measurement was carried out. With this result, we can easily control the LC pretilt in the pixel with appropriate exposure conditions which is critical to achieve excellent electrooptic characteristics and good image quality.
Related Links	http://dx.doi.org/10.1186/1556-276x-7-63
Starting Page	63
File Format	PDF
ISSN	1556276X
e-ISSN	1556276X
Journal	Nanoscale Research Letters
Issue Number	1
Volume Number	7
Language	English
Publisher	Springer
Publisher Date	2012-01-01
Access Restriction	Open
Rights Holder	Springer
Subject Keyword	Materials Science(all) Condensed Matter Physics Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Condensed Matter Physics

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Zenithal alignment of liquid crystal on homeotropic polyimide film irradiated by ion beam