自愈
弹性体
材料科学
电子皮肤
导电体
可伸缩电子设备
复合材料
自愈材料
纳米技术
软机器人
可穿戴技术
柔性电子器件
光电子学
导电的
可穿戴计算机
替代医学
病理
医学
作者
Xiaochen Xun,Yue Zhang,Xuan Zhao,Bin Zhao,Fangfang Gao,Zhuo Kang,Qingliang Liao
出处
期刊:ACS Nano
[American Chemical Society]
日期:2020-07-13
卷期号:14 (7): 9066-9072
被引量:79
标识
DOI:10.1021/acsnano.0c04158
摘要
Self-powered electronic skin (E-skin) can be endowed with high robustness by employing self-healing materials. However, most self-powered E-skin employs two heterogeneous materials with high modulus mismatch at the interface and poor fully self-healing ability, which reduces the robustness of the whole device. Here, a conductive polyurethane elastomer (PUE) with excellent mechanical toughness and self-healing ability is prepared. Based on the self-healing insulated/conductive PUE homogeneous structure and triboelectric–electrostatic induction effect, a highly robust and self-powered E-skin (HRSE-skin) is developed. The HRSE-skin possesses stable mechanosensation capability during the 50% stretching deformation due to a low modulus mismatch in the homogeneous structure. In addition, the stretchability and mechanosensation capability of the HRSE-skin can be restored after the fracture owing to the fully self-healing ability of the homogeneous structure. Therefore, the HRSE-skin has high robustness of the whole device including stable service behaviors and excellent restorability. The developed HRSE-skin demonstrates high robustness in the detection of the force and bending angle of the prosthetic joint. This work solves the low robustness of self-powered E-skin by the preparation of conductive self-healing PUE and the construction of the homogeneous structure, which is important for the practical applications of self-powered E-skin in prosthetic limbs and advanced robotics.
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