A phototunable laminated liquid crystal film with simultaneous multicolor reflection is successfully fabricated by doping a light-driven chiral molecular switch into the laminated cholesteric liquid crystal structure. Upon UV-light irradiation, the reflection notches and their hyper-reflectivity properties can be precisely tuned, and their original state can be properly returned by visible-light irradiation.
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Chen et al. (2014) studied this question.
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