纳米发生器
材料科学
摩擦电效应
人工肌肉
执行机构
电容感应
弹性体
电子皮肤
光电子学
复合材料
电气工程
压电
工程类
作者
Yanze Liu,Shangzhi Yue,Zhongyuan Tian,Z. A. Zhu,Yongji Li,Xiangyu Chen,Zhong Lin Wang,Zhong‐Zhen Yu,Dan Yang
标识
DOI:10.1002/adma.202309893
摘要
Abstract Although dielectric elastomer actuators (DEAs) are promising artificial muscles for use as visual prostheses in patients with oculomotor nerve palsy (ONP), high driving voltage coupled with vulnerable compliant electrodes limits their safe long‐term service. Herein, a self‐healable polydimethylsiloxane compliant electrode based on reversible imine bonds and hydrogen bonds is prepared and coated on an acrylic ester film to develop a self‐healable DEA (SDEA), followed by actuation with a high‐output triboelectric nanogenerator (TENG) to construct a self‐powered DEA (TENG‐SDEA). Under 135.9 kV mm −1 , the SDEA exhibits an elevated actuated strain of 50.6%, comparable to the actuation under DC power. Moreover, the mechanically damaged TENG‐SDEA displays a self‐healing efficiency of over 90% for 10 cycles. The TENG ensures the safe using of TENG‐SDEAs and an extraocular‐muscle‐like actuator with oriented motion ability integrated by several TENG‐SDEAs is constructed. Additionally, the SDEA is directly used as a flexible capacitive sensor for real‐time monitoring of the patient's muscle movement. Accordingly, a medical aid system based on a conjunction of the extraocular‐muscle‐like actuator and a flexible capacitive sensor is manufactured to help the patients suffering from ONP with physical rehabilitation and treatment.
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