Affiliation:
1. Department of Engineering Mechanics, Soft Matter Research Center, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
Abstract
Abstract
Serpentine interconnects on soft elastomers have been widely used to develop high-performance stretchable electronics. A number of applications demand the system to sustain repetitive loadings, which lead to fatigue failure of serpentine interconnects. In this paper, the fatigue behavior of serpentine interconnects on an elastomeric substrate is investigated experimentally and theoretically. It is shown that the fatigue failure of serpentine interconnects is governed by the failure of the encapsulation layer with the fatigue life determined by the strain level. A fatigue life prediction model, validated by experiments, based on the fatigue modulus concept is established to predict the fatigue life of serpentine interconnects. These results provide physical insights into the fatigue failure of serpentine interconnects and paves the theoretical foundation to predict the fatigue life, thus to study the reliability of stretchable electronics.
Funder
National Basic Research Program
National Natural Science Foundation of China
Shenzhen Science and Technology Program
Fundamental Research Funds for the Central Universities
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics
Cited by
35 articles.
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