Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2003.07b
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- Pages.1078-1081
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- 2003
Anchoring Strength Characteristics by the Washing Process after Rubbing on the Polyimide Layers
- Lee, Sang-Keuk (Kwangwoon Univ.) ;
- Lee, Joon-Ung (KIEEME) ;
- Han, Jeong-Min (Yonsei Univ.) ;
- Hwang, Jeoung-Yeon (Yonsei Univ.) ;
- Paek, Seung-Kwon (Inje Univ.) ;
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Seo, Dae-Shik
(Yonsei Univ.)
- Published : 2003.07.10
Abstract
The polar anchoring strength and surface ordering in a NLC, 4-n-pentyl-4'-cyanobiphenyl (5CB), on a rubbed polyimide (PI) surface containing trifluoromethyl moiety were studied. The large extrapolation length de of 5CB for washing process of water was measured at RS=114 mm. The polar anchoring energy of 5CB on the rubbed PI surface is decreased by the washing process. Also, the polar anchoring energy of 5CB increases with the rubbing strength on the PI surface. The surface ordering of 5CB for all washing processes is smaller than the non-washing process; it is attributed to the washing process.