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Voltage-Induced Wrinkle Performance in a Hydrogel by Dielectric Elastomer Actuation

1, 1,2,*, 1, 1,3 and 1,2,4
School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Shaanxi Key Laboratory for Intelligent Robot, Xi’an Jiaotong University, Xi’an 710049, China
State Key Laboratory of Fluid Power and Mechanic Systems, Zhejiang University, Hangzhou 310027, China
State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi’an Jiaotong University, Xi’an 710049, China
Author to whom correspondence should be addressed.
Polymers 2018, 10(7), 697;
Received: 8 May 2018 / Revised: 14 June 2018 / Accepted: 19 June 2018 / Published: 22 June 2018
(This article belongs to the Special Issue Polymer Actuator)
PDF [4850 KB, uploaded 22 June 2018]


Hydrogel is a type of soft smart material and is responsive to stimuli. In the development of actuation in hydrogel, electrical actuation features a fast and universal strategy which is favored in the engineering system. Due to the difficulty in direct electrical actuation in hydrogel, in this study, an indirect actuation was attained via a dielectric elastomer. An aligned wrinkle pattern was obtained in the hydrogel upon a direct-current voltage, and it is reversible. The morphology and nonlinear mechanics of the electro-wrinkling deformation was characterized and analyzed. The optical property of the wrinkle in hydrogel was investigated, demonstrating a tunable blurring effect in optics. The electro-wrinkling performance offers a potential application with soft and tunable optical property in hydrogel-based actuators. View Full-Text
Keywords: hydrogel; wrinkle; actuation; dielectric elastomer; optics hydrogel; wrinkle; actuation; dielectric elastomer; optics

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Tang, C.; Li, B.; Zou, C.; Liu, L.; Chen, H. Voltage-Induced Wrinkle Performance in a Hydrogel by Dielectric Elastomer Actuation. Polymers 2018, 10, 697.

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