Fast Self‐Assembly of Photonic Crystal Hydrogel for Wearable Strain and Temperature Sensor (Small Methods 7/2022)

Photonic Crystals In article number 2200461, Lei, Xue, and co-workers develop a fast self-assembly method for photonic crystals. The self-assembly can be finished within 4 hours, and the resultant photonic crystals show excellent structural colors in the visible light range. Moreover, with integration of hydrogel, the photonic crystal hydrogel functionalizes as a wearable strain sensor and temperature sensor with intuitive color outputs.