Color-Oscillating Photonic Crystal Hydrogel

摘要

In this work, a color-oscillating system is first developed by combining the intrinsic peristalticmotion of a Landolt pH-oscillator with the structure color of a well-designed pH-sensitivephotonic crystal hydrogel. As a result, the pH oscillation reaction procedure could be distinctlymonitored by the distinct change of structure color/optic signal. The oscillation rhythm ofthe pH well coincides with that of the stopband/structure color. The oscillation detail of eachcycle can also be clearly monitored bycolor change. This work would be ofgreat significance for the promisingapplications of real-time monitoring ofthe microactuator by optical signal orstructure color.