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Polystyrene Blend Alignment Layers for Pretilt Angle Control of Liquid Crystal
- Authors
- Kang, Hyo; Kang, Daeseung
- Issue Date
- 2014
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- Alignment; liquid crystal; polystyrene; pretilt angle
- Citation
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.593, no.1, pp.25 - 33
- Journal Title
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS
- Volume
- 593
- Number
- 1
- Start Page
- 25
- End Page
- 33
- ISSN
- 1542-1406
- Abstract
- We prepared blend alignment layer based on polystyrene containing 7-hydroxycoumarin (P7COU) and polystyrene containing 2-naphthoxy (P2NAP) side groups for liquid crystal (LC) alignment. The LC cells made from the rubbed P7COU/P2NAP blended films exhibited a shift of the LC alignment direction by approximately 20. compared with those made from a polystyrene film. Stable and homogeneous planar LC cells having pretilt angles adjustable from 0 degrees to 5 degrees were obtained from these polymer films having molar contents of P7COU and P2NAP in the ranges of 100-80 and 0-20 mole%, respectively. The LC alignment behavior was well correlated with the wettability of the polymer films.
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Related Researcher
- Kang, Daeseung
- College of Engineering (School of Electrical Engineering)