期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 7, 页码 3390-3396出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202014533
关键词
anisotropic hydrogels; MXene; NIR light; soft robotics
资金
- National Natural Science Foundation of China [51973155, 51873147]
- Academy of Finland [320165, 326445]
- Academy of Finland (AKA) [326445, 326445] Funding Source: Academy of Finland (AKA)
This study presents a near-infrared light-driven shape-morphing MXene-containing anisotropic hydrogel actuator, which can perform various functions by controlling electrode pattern, electric field direction, and photopolymerization.
Herein, we report near-infrared (NIR) light-driven shape-morphing of programmable MXene-containing anisotropic hydrogel actuators that are fabricated through in situ free-radical copolymerization of a judiciously designed MXene nanomonomer with thermosensitive hydrogel network. A low electric field (few V mm(-1)) was found to enable a spatial distribution of MXene nanosheets and hence introduce anisotropy into the hydrogel network. Programmable anisotropic hydrogel actuators were developed by controlling ITO electrode pattern, direct-current (DC) electric field direction and mask-assisted photopolymerization. As a proof-of-concept, we demonstrate NIR light-driven shape morphing of the MXene-containing anisotropic hydrogel into various shapes and devise a four-arm soft gripper that can perform distinct photomechanical functions such as grasping, lifting/lowering down and releasing an object upon sequential NIR light exposure.
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