The UV-induced alignment of nematic liquid crystals on Probimide 32 preimidized polyamide-imide surfaces is investigated. Exposing the polymer layer to linearly polarized deep UV ( l ร 254 nm) produces an aligning effect comparable to that achieved by mechanically brushing the polymer film. A laser
Influence of Additives and Surface Topography on the Alignment of Nematic Liquid Crystals
โ Scribed by G. Hauck; L. Komitov; A. Derzhanski; H. D. Koswig
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- English
- Weight
- 279 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0232-1300
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โฆ Synopsis
Abstract
Observations of the influence of a simultaneous action of different surface topographies and polar or nonpolar additives in small concentration on the alignment properties of liquid crystal molecules are reported. The additive dependence of the threshold behaviour of planar aligned liquid crystal cells is also studied.
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## Abstract The surfaceโassisted alignment of a nematic liquid crystal yields a persistent ordered structure upon cationic photopolymerization of liquidโcrystalline epoxides. Linearly polarized light irradiation of a photocrosslinkable polymer containing azobenzene moieties played a crucial role in
## Abstract Nematic liquid crystals (NLCs), 4โcyanoโ4โฒโpentylbiphenyl and 4โcyanoโ4โฒโoctylbiphenyl, were applied as additives to polymer solar cells with P3HT:PC~61~BM blend films. The incorporation of NLC additives led to a higher absorbance of the blend film, a higher crystallinity of P3HT, close