Front Cover: In article 2300643, Rong Wang and co-workers develop a facile way of constructing thermo-responsive hydrogel actuators based on a poly(N-isopropylacrylamide) microgel cross-linking strategy. The bilayer hydrogels show enhanced mechanical properties and tunable response rates, making them highly promising for applications of smart actuating devices.
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Yang et al. (2024) studied this question.