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Chiral switches bring new twist to photonics

A liquid crystal doped with a diarylethene enantiomer can be switched by light into stable reflection states of different colour, creating new opportunities for lasing and labelling.

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Fig. 1: Thermally robust and multistable tuning of the photonic bandgap (reflection band) of a chiral nematic liquid crystal.


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Correspondence to Stephen M. Morris.

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Chen, B., Zhao, Z. & Morris, S.M. Chiral switches bring new twist to photonics. Nat. Photon. 16, 174–175 (2022).

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