Date
Place
- Room G (Room 306)
- 47. Optical Properties of LC
- August 21, 2015 (Friday)
- 09:00 ~ 10:30
- [47-4]
- 10:15 ~ 10:30
- Title:A Study of Surface Influence on Crystal Growth of Polymer-Stabilized Blue Phase Liquid Crystals
- Po-Ju Chen, Michael Chen, Shih-Ya Ni, Hung-Shan Chen, and Yi-Hsin Lin (Nat'l Chiao Tung Univ., Taiwan)
Abstract: We demonstrate the manipulation of crystal growth of polymer-stablized blue phase liquid crystal (or PSBP-LC) by various surface treatments of the substrates. Without alignment layer on the substrate, both heterogenous and homogenous nucleation happen during the cooling process, as shown in Fig. 1(a)-(d). The result shows random crystal orientaion of PSBP-LC. However, with alignment layer, such as cell with anti-parallel alignment(AP) or vertical alignment(VA), the heterogenous nucleation dominates during the cooling process, as shown in Fig. 1(e)-(h) and Fig. 1(i)-(l) shows. As a result, we can achieve PSBP-LC with high uniformity of crystal orientation in VA cell and strong blue bragg reflection in AP cell. The study provides a different way to control the growth of PSBP-LC. We believe this study can help the understanding of crystal growth of PSBP-LC and the development of PSBP-LC based optical-electro device.
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