材料科学
生物电子学
泄漏(经济)
弹性体
复合材料
导电体
压阻效应
液态金属
电阻和电导
电阻率和电导率
多孔性
纳米技术
电气工程
生物传感器
工程类
宏观经济学
经济
作者
Yadong Xu,Yajuan Su,Xianchen Xu,Brian Arends,Ganggang Zhao,Daniel N. Ackerman,Henry Huang,St Patrick Reid,Joshua L. Santarpia,Chansong Kim,Zehua Chen,Sana Mahmoud,Yun Ling,Alexander A. Brown,Qian Chen,Guoliang Huang,Jingwei Xie,Zheng Yan
出处
期刊:Science Advances
[American Association for the Advancement of Science]
日期:2023-01-06
卷期号:9 (1): eadf0575-eadf0575
被引量:104
标识
DOI:10.1126/sciadv.adf0575
摘要
Liquid metal–elastomer composite is a promising soft conductor for skin-interfaced bioelectronics, soft robots, and others due to its large stretchability, ultrasoftness, high electrical conductivity, and mechanical-electrical decoupling. However, it often suffers from deformation-induced leakage, which can smear skin, deteriorate device performance, and cause circuit shorting. Besides, antimicrobial property is desirable in soft conductors to minimize microbial infections. Here, we report phase separation–based synthesis of porous liquid metal–elastomer composites with high leakage resistance and antimicrobial property, together with large stretchability, tissue-like compliance, high and stable electrical conductivity over deformation, high breathability, and magnetic resonance imaging compatibility. The porous structures can minimize leakage through damping effects and lower percolation thresholds to reduce liquid metal usage. In addition, epsilon polylysine is loaded into elastic matrices during phase separation to provide antimicrobial property. The enabled skin-interfaced bioelectronics can monitor cardiac electrical and mechanical activities and offer electrical stimulations in a mechanically imperceptible and electrically stable manner even during motions.
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