Cholesteric liquid crystal devices with nanoparticle aggregation

Shie-Chang Jeng*, Shug June Hwang, Yu Hsiang Hung, Sheng Chieh Chen

*Corresponding author for this work

研究成果: Article同行評審

30 引文 斯高帕斯(Scopus)

摘要

A broadband cholesteric liquid crystal (CLC) device with a multi-domain structure is demonstrated by using an aggregation of polyhedral oligomeric silsesquioxane (POSS) nanoparticles in the CLC layer. The aggregation pattern of the self-assembled POSS nanoparticles depends on the concentration of POSS doped in the mixture of POSS/CLC and the cooling rate of the mixture from a temperature higher than the clear point. POSS-induced changes in the bulk and surface properties of the cholesteric cells, such as a promotion of homeotropic alignment, help to form a cholesteric structure with a broadband reflection of light; the latter can be used for improvement of bistable CLC devices. A higher POSS concentration and a higher cooling rate both improve the appearance of the black-white CLC device.

原文English
頁(從 - 到)22572-22577
頁數6
期刊Optics Express
18
發行號21
DOIs
出版狀態Published - 11 十月 2010

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