Direct Ink Written Chiral Photonic Elastomers:Unprecedented Optical and Mechanochromic Properties
발표자
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초록
내용
In this study, we develop a new method to develop cholesteric liquid crystal (CLC) phase-based chiral photonic elastomers via UV-assisted direct ink writing (DIW). Unprecedentedly, the helical axis of the DIW-processed CLC elastomers (CLCEs) was slanted by about 40˚ along the printing direction, which led to blue- or red-shifting of the reflected structural color of the CLCEs depending on the printing direction and the viewing angle. More interestingly, mechanochromic behavior of the CLCEs was considerably altered by the printing direction due to the anisotropic mechanical properties of the CLCE. By harnessing both the chiroptical and mechanochromic properties of CLCEs, the potential of our CLCE as a novel strain sensor was demonstrated which could be useful for creating an interesting anti-counterfeiting device.