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- Title
In situ homeotropic alignment of nematic liquid crystals based on photoisomerization of azo-dye, physical adsorption of aggregates, and consequent topographical modification.
- Authors
Kundu, Sudarshan; Lee, Myong-Hoon; Lee, Seung Hee; Kang, Shin-Woong
- Abstract
In situ homeotropic alignment is achieved by photochromic trans- to cis-isomerization of an azo-dye doped in a nematic host. The augmented dipole moment of the cis-isomer formed under UV-irradiation expedites molecular assembly into crystalline aggregates. Subsequent deposition of the aggregates creates a roughened surface and induces an anchoring transition from the initial planar to a homeotropic alignment of the LCs.
- Publication
Advanced materials (Deerfield Beach, Fla.), 2013, Vol 25, Issue 24, p3365
- ISSN
1521-4095
- Publication type
Journal Article
- DOI
10.1002/adma.201300730