An analytical mechanics model for the island-bridge structure of stretchable electronics

Rui Li, Ming Li, Yewang Su, Jizhou Song, Xiaoqin Ni

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

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 (∼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.

Original languageEnglish (US)
Pages (from-to)8476-8482
Number of pages7
JournalSoft Matter
Volume9
Issue number35
DOIs
StatePublished - Sep 21 2013

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics

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