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论文类型：期刊论文

发表时间：2013-09-21

发表刊物：SOFT MATTER

收录刊物：SCIE、EI、Scopus

卷号：9

期号：35

页面范围：8476-8482

ISSN号：1744-683X

摘要：In stretchable electronics, the island-bridge structure on a soft substrate plays an important role in achieving large stretchability. A key issue in developing such a system is to prevent the island-bridge structure from breaking during use because it is composed of brittle semiconductor materials (e. g., silicon) which withstand very small strains (similar to 1%). In the following, an analytical mechanics model of the island-bridge structure is established and the accurate solution is obtained. A validated scaling law is found to reveal the dependence of the normalized maximum strain in the island on the prestrain of the substrate, which controls the mechanical failure of the island-bridge structure and provides a theoretical basis for fracture-safe design of stretchable electronics.