期刊
出版社
ROYAL SOC
DOI: 10.1098/rspa.2017.0092
关键词
temperature-sensitive hydrogels; bilayer; bending; finite-deformation theory
资金
- National Natural Science Foundation of China [11372279, 11572285, 11621062]
Stimuli-responsive hydrogels can serve as manipulators, including grippers, sensors, etc., where structures can undergo significant bending. Here, a finite-deformation theory is developed to quantify the evolution of the curvature of bilayer temperature-sensitive hydrogels when subjected to a temperature change. Analysis of the theory indicates that there is an optimal thickness ratio to acquire the largest curvature in the bilayer and also suggests that the sign or the magnitude of the curvature can be significantly affected by pre-stretches or small pores in the bilayer. This study may provide important guidelines in fabricating temperature-responsive bilayers with desirable mechanical performance.
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