Chun-Hua Zhu, Yang Lu, Jun Peng, Jia-Fu Chen and Shu-Hong Yu Hydrogels: Photothermally Sensitive Poly(N-isopropylacrylamide)/Graphene Oxide Nanocomposite Hydrogels as Remote Light-Controlled Liquid Microvalves (Adv. Funct. Mater. 19/2012) Advanced Functional Materials 22
Nanocomposite materials can turn temperature-responsive hydrogels into light-activated ones. On page 4017, Jia-Fu Chen, Shu-Hong Yu, and co-workers report the synthesis of a photothermally sensitive poly(N-isopropylacrylamide)/graphene oxide (PNIPAM/GO) nanocomposite hydrogel on the macroscopic scale using in situ gamma-irradiationassisted polymerization. The swelling–shrink transition of the nanocomposite hydrogels can be controlled via near-infrared (NIR) laser exposure or non-exposure, demonstrating potential applications as controlled liquid microvalves.
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