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Title: Recent advances in stimuli-responsive shape-morphing hydrogels
Authors: Liu, Xiaojiang
Gao, Ming
Chen, Jiayao
Guo, Sheng
Zhu, Wei
Bai, Lichun
Zhai, Wenzheng
Du, Hejun
Wu, Hong
Yan, Chunze
Shi, Yusheng
Gu, Junwei
Qi, Hang Jerry
Zhou, Kun
Keywords: Engineering::Materials
Issue Date: 2022
Source: Liu, X., Gao, M., Chen, J., Guo, S., Zhu, W., Bai, L., Zhai, W., Du, H., Wu, H., Yan, C., Shi, Y., Gu, J., Qi, H. J. & Zhou, K. (2022). Recent advances in stimuli-responsive shape-morphing hydrogels. Advanced Functional Materials, 32(39), 2203323-.
Journal: Advanced Functional Materials
Abstract: Inspired by shape-morphing organisms in nature, researchers have developed various hydrogels with stimuli-responsive swelling, shrinking, bending, folding, origami, rolling, twisting, or locomotion. These smart hydrogels are usually created by patterning or 4D printing. The shape morphing of hydrogels allows the fabrication of helixing, twisting, and rolling microstructures, all of which are hard to reproduce directly by ordinary techniques. More importantly, under external stimuli (e.g., solvent, humidity, temperature, light, pH, and electric/magnetic fields), many hydrogels exhibit recoverable shape morphing and thus find promising applications in grippers, sensors, valves, soft robotics, etc. Since shape morphing determines the functions of hydrogels in a great number of cases, herein, recent advances of stimuli-responsive hydrogels are summarized, with their types, shape-morphing mechanisms, fabrication methods, shape-morphing modes, and extensive applications covered. The conclusion and perspectives are also presented to guide the design and fabrication of functional hydrogels.
ISSN: 1616-301X
DOI: 10.1002/adfm.202203323
Schools: School of Mechanical and Aerospace Engineering 
Research Centres: HP-NTU Digital Manufacturing Corporate Lab
Singapore Centre for 3D Printing 
Rights: © 2022 Wiley-VCH GmbH. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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