Polymer stabilized liquid crystal films reflecting both right- and left-circularly polarized light

Jinbao Guo; Hui Cao; Jie Wei; Duowei Zhang; Fang Liu; Guohui Pan; Dongyu Zhao; Wanli He; Huai Yang
November 2008
Applied Physics Letters;11/17/2008, Vol. 93 Issue 20, p201901
Academic Journal
A single-layer polymer stabilized liquid crystal (PSLC) film reflecting both right- and left-circularly polarized light has been developed by a wash-out/refill method. The PSLC film was achieved by prefabricating the polymer network with a left-handed helical structure and then refilling a cholesteric liquid crystal with a right-handed helical structure into the network. The reflection intensity of the PSLC film is close to 100% when the pitch lengths of the two opposite helical structures are the same. It was demonstrated that the memory effect of the polymer network is an important mechanism for the resulting film properties.


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