Pretilt Control of a Nematic Liquid Crystal on Polymer Layers by Atmospheric Plasma Irradiation
| Autor: | Sin-Doo Lee, Eunje Jang, Hyung-Jun Song |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
chemistry.chemical_classification
Materials science Physics and Astronomy (miscellaneous) Atmospheric pressure business.industry Homeotropic alignment General Engineering General Physics and Astronomy Atmospheric-pressure plasma Polymer Optics chemistry Liquid crystal Composite material business Layer (electronics) Polyimide Ambient pressure |
| Zdroj: | Japanese Journal of Applied Physics. 45:L1238-L1240 |
| ISSN: | 0021-4922 |
| DOI: | 10.1143/jjap.45.l1238 |
| Popis: | We present the pretilt control of a nematic liquid crystal (LC) on polymer layers exposed to a plasma beam under atmospheric pressure. Depending on the exposure parameters of the atmospheric pressure plasma (APP) in a sheetlike shape, the vertical or the planar alignment with a variable pretilt can be produced on a homeotropic polyimide (PI) layer. The polar anchoring energy of the APP-exposed PI layer is of the order of 10-4 J/m2, comparable to the rubbed PI layer. Our approach to the plasma-assisted LC alignment under ambient pressure would be applicable for the in-line process of producing wideviewing LC displays with multidomains. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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