Journal
LIQUID CRYSTALS
Volume 41, Issue 10, Pages 1465-1472Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02678292.2014.926404
Keywords
photo-alignment; ferroelectric liquid crystals; azo-dyes
Funding
- HK Gov. [ITP/039/12NP]
- NAMI
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In this article, we disclose a method to fabricate polymer-stabilised azo-dye photo alignment layers for liquid crystal. The idea includes the introduction of polymer network in the alignment layer, in optimal concentration, followed by two-step irradiation. The stabilised photo-alignment layer has been explored for different aspects of the display-related parameters, viz. anchoring energy, stability for various display-related environments as a function of concentration of monomer and irradiation, residual DC and voltage holding ratio. The composite photo-alignment layer offers well-suited parameters for the liquid crystal alignment and therefore could find application in a variety of modern photonic and display devices.
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