대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1996년도 하계학술대회 논문집 C
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- Pages.1453-1455
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- 1996
러빙처리된 폴리이미드막 LB막에 있어서 네마틱액정의 결합강도의 홀수짝수 효과
Odd-Even Effects of the Anchoring Strength for Nematic Liquid Crystal on Rubbed Polyimide LB Surfaces
- 서대식 (숭실대학교 공과대학 전기공학과)
- Seo, Dae-Shik (Department of Electrical Engineering, College of Engineering, Soong Sil University)
- 발행 : 1996.07.22
초록
The odd-even effect of the alkyl chain length of rubbed polyimide Langmuir-Blodgett (LB) surfaces on the extrapolation length of 5CB has been successfully evaluated for the first time by measuring polar anchoring strength. The extrapolation length of 5CB for rubbed PI-LB surfaces with even-numbers is small compared with odd-numbers for alkyl chain lengths of greater than 7 carbons. The extrapolation length of 5CB on rubbed PI-LB surfaces with odd-numbers increases gradually as the temperature increases but tends to diverge near the clearing temperature (Tc=
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