可伸缩电子设备
材料科学
数码产品
弹性体
基质(水族馆)
电子元件
脆性
复合材料
限制
电子皮肤
机械工程
纳米技术
电气工程
海洋学
地质学
工程类
作者
Maoyi Zhang,Hao Liu,Peng Cao,Bin Chen,Jianqiao Hu,Yuli Chen,Bing Pan,Jonathan A. Fan,Rui Li,Lijuan Zhang,Rui Li
出处
期刊:Journal of Applied Mechanics
[ASME International]
日期:2017-10-26
卷期号:84 (12)
被引量:22
摘要
Abstract Stretchable electronics based on inorganic materials are an innovative technology with potential applications for many emerging electronic devices, due to their combination of stretchable mechanics and high electronic performance. The compliant elastomeric substrate, on which the brittle electronic components are mounted, plays a key role in achieving stretchability. However, conventional elastomeric substrates can undergo excessive mechanical deformation, which can lead to active component failure. Here, we introduce a simple and novel strategy to produce failure-resistant stretchable electronic platforms by bonding a thin film of stiff material, patterned into a serpentine network layout, to the elastomeric substrate. No prestraining of the substrate is required, and these systems offer sharp bilinear mechanical behavior and high ratio of tangent-to-elastic moduli. We perform comprehensive theoretical, numerical, and experimental studies on the nonbuckling-based prestrain-free design, and we analyze the key parameters impacting the mechanical behavior of a strain-limiting substrate. As a device-level demonstration, we experimentally fabricate and characterize skin-mountable stretchable copper (Cu) electrodes for electrophysiological monitoring. This study paves the way to high performance stretchable electronics with failure-resistant designs.
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