标度系数
可穿戴计算机
材料科学
自愈水凝胶
纳米技术
可穿戴技术
计算机科学
石墨烯
数码产品
嵌入式系统
高分子化学
电气工程
工程类
制作
病理
医学
替代医学
作者
Jian Zhou,Fengling Zhuo,Xinxin Long,Ying Liu,Haibao Lu,Jikui Luo,Lei Chen,Shurong Dong,Yong Qing Fu,Huigao Duan
标识
DOI:10.1016/j.cej.2022.137259
摘要
Flexible sensors which are highly stretchable, sensitive, and self-adhesive are critically required for wearable electronics, personalized healthcare monitoring and electronic skins. Conductive hydrogel-based sensors hold great promises for this purpose. However, it remains a critical challenge to integrate all the critical functions (e.g., remarkable stretchability, high sensitivity, and self-adhesiveness) into one hydrogel. Here, we propose a bio-inspired hybrid hydrogel framework with a hierarchical configuration that incorporates sodium casein, polydopamine, calcium chloride, and graphene oxide into a polyacrylamide hydrogel. Multiple interpenetrating network architectures and their strong interactions provide superior stretchability of 10,300%, high strain sensitivity with a gauge factor of 13.45 over a broad strain range, robust adhesiveness, fast responsiveness, and excellent reproducibility. This hydrogel-based wearable sensor demonstrates outstanding sensing performance in detecting, quantifying, and remotely monitoring human motions through integration into a cloud platform. A durable glove is further developed using the hybrid hydrogel for wirelessly controlling synchronized motions of a manipulator and accurately recognizing hand gestures. This hybrid hydrogel has shown wide-range applications in fields including wearable electronics, human–machine interfaces, and electronic skins.
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