[논문]Multipolar spatial electric field modulation for freeform electroactive hydrogel actuation

Choi, Moon-Young; Shin, Yerin; Lee, Hu Seung; Kim, So Yeon; Na, Jun-Hee

doi:10.1038/s41598-020-59318-3

[해외논문] Multipolar spatial electric field modulation for freeform electroactive hydrogel actuation 원문보기

Scientific reports, v.10, 2020년, pp.2482 -

Choi, Moon-Young (Department of Electrical, Electronics, and Communication Engineering Education, Chungnam National University, Daejeon, 34134 Republic of Korea) , Shin, Yerin (Graduate School of Energy Science and Technology, Chungnam National University, Daejeon, 34134 Republic of Korea) , Lee, Hu Seung (Department of Mechanical and Material Engineering Education, Chungnam National University, Daejeon, 34134 Republic of Korea) , Kim, So Yeon (Graduate School of Energy Science and Technology, Chungnam National University, Daejeon, 34134 Republic of Korea) , Na, Jun-Hee (Department of Electrical, Electronics, and Communication Engineering Education, Chungnam National University, Daejeon, 34134 Republic of Korea)

Abstract ▼ AI-Helper

Electroactive hydrogels that exhibit large deformation in response to an electric field have received significant attention as a potential actuating material for soft actuators and artificial muscle. However, their mechanical actuation has been limited in simple bending or folding due to uniform electric field modulation. To implement complex movements, a pre-program, such as a hinge and a multilayer pattern, is usually required for the actuator in advance. Here, we propose a reprogrammable actuating method and sophisticated manipulation by using multipolar three-dimensional electric field modulation without pre-program. Through the multipolar spatial electric field modulator, which controls the polarity/intensity of the electric field in three-dimensions, complex three-dimensional (3D) actuation of single hydrogels are achieved. Also, air bubbles generated during operation in the conventional horizontal configuration are not an issue in the proposed new vertical configuration. We demonstrate soft robotic actuators, including basic bending mechanics in terms of controllability and reliability, and several 3D shapes having positive and negative curvature can easily be achieved in a single sheet, paving the way for continuously reconfigurable materials.

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