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Polymers 2018, 10(7), 697; https://doi.org/10.3390/polym10070697

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

1
,
1,2,* , 1
,
1,3
and
1,2,4
1
School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
2
Shaanxi Key Laboratory for Intelligent Robot, Xi’an Jiaotong University, Xi’an 710049, China
3
State Key Laboratory of Fluid Power and Mechanic Systems, Zhejiang University, Hangzhou 310027, China
4
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.
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)
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Abstract

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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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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