期刊
ACS APPLIED MATERIALS & INTERFACES
卷 14, 期 9, 页码 11834-11841出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c24702
关键词
hydrogel actuator; metal-organic framework; shape-programmable; near-infrared light; aquatic soft robotics
资金
- National Natural Science Foundation of China [51973155, 52173181, 52173262]
- Natural Science Foundation of Tianjin [20JCYBJC00810]
This study presents the design and synthesis of near-infrared light-driven hydrogel actuators loaded with metal-organic frameworks. The metal-organic frameworks serve as efficient photothermal nanotransducers and accelerate the adsorption/desorption of water, leading to fast response rates of the actuators. By tailoring the patterning of the hydrogel actuators, different shape-morphing modes can be achieved under near-infrared light irradiation.
Shape-programmable hydrogel-based soft actuators that can adaptively respond to external stimuli are of paramount significance for the development of bioinspired aquatic smart soft robots. Herein, we report the design and synthesis of near-infrared (NIR) light-driven hydrogel actuators through in situ photopolymerization of poly(N-isopropylacrylamide) (PNIPAM) hydrogels loaded with metal-organic frameworks (MOFs) onto the surface of the poly(dimethylsiloxane) (PDMS) thin film. The MOFs can not only function as an excellent photothermal nanotransducer but also accelerate the adsorption/desorption of water due to their porous nanostructure, which speeds up the response rate of the actuators. Shape-programmable hydrogel actuators are fabricated by tailoring the patterning of PDMS thin film, and thus different shape-morphing modes such as directional bending and chiral twisting are observed under the NIR light irradiations. As the proof-of-concept demonstrations, an artificial hand, biomimetic mimosa, and flower are conceptualized with light-driven MOF-containing hydrogel actuators. Interestingly, we are able to achieve an octopus-inspired light-driven soft swimmer upon cyclic NIR illumination due to the fast photoresponsiveness of as-prepared hydrogel actuators. This work can offer insights for fabricating programmable and reconfigurable smart aquatic soft actuators, thus shining a light into their potential applications in emerging fields including soft robots, biomedical devices, and beyond.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据