Handedness inversion of the Bragg reflection light of cholesteric liquid crystal polymer network films using a half-wave plate

被引:1
作者
Zhang, Ming [1 ]
Li, Baozong [1 ]
Liu, Wei [1 ]
Li, Yi [1 ]
Yang, Yonggang [1 ]
机构
[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Dept Polymer Sci & Engn, State & Local Joint Engn Lab Novel Funct Polymer M, Suzhou 215123, Peoples R China
基金
中国国家自然科学基金;
关键词
OXYGEN INHIBITION; COLOR; PHOTOPOLYMERIZATION;
D O I
10.1039/d4nj02983f
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Colourful cholesteric liquid crystal polymer network (CLCN) films can selectively reflect circularly polarized light whose handedness is consistent with that of the CLCN films. The CLCN patterns have been applied for decoration and anti-counterfeiting. Herein, colourful patterns are prepared using a CLCN pattern and a nematic liquid crystal polymer network (NLCN) film. The structural colours are controlled by the helical pitches of the CLCN pattern. The NLCN film acts as the half-wave plate to invert the handedness of the circularly polarized lights reflected by the CLCN pattern. The sandwiched R-CLCN (right-handed CLCN)/NLCN/R-CLCN film can reflect both a left- and a right-handed circularly polarized light. The reflectance of this sandwiched film can be tuned by changing the NLCN and R-CLCN film thicknesses. Moreover, a colour pattern is also prepared based on this sandwiched structure, which is potentially applied for decoration and anti-counterfeiting. Colourful patterns for decoration and anti-counterfeiting are prepared using cholesteric liquid crystal polymer network films and a half-wave plate.
引用
收藏
页码:17287 / 17293
页数:7
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