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Some animals such as octopuses not only can move, but also can tune their body colors to camouflage or communicate in specific surroundings. Inspired by that, an anisotropic polymeric hydrogel actuator with on‐off switchable and color‐tunable fluorescence behaviors is developed by Jiawei Zhang, Tao Chen, and co‐workers in article number 1704568, which integrates color‐changing and complex shape deformation...
An effective approach to develop a novel macroscopic anisotropic bilayer hydrogel actuator with on–off switchable fluorescent color‐changing function is reported. Through combining a collapsed thermoresponsive graphene oxide‐poly(N‐isopropylacrylamide) (GO‐PNIPAM) hydrogel layer with a pH‐responsive perylene bisimide‐functionalized hyperbranched polyethylenimine (PBI‐HPEI) hydrogel layer via macroscopic...
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