Mechanics of ultra-stretchable self-similar serpentine interconnects

Yihui Zhang, Haoran Fu, Yewang Su, Sheng Xu, Huanyu Cheng, Jonathan A. Fan, Keh Chih Hwang, John A. Rogers, Yonggang Huang

Research output: Contribution to journalArticle

104 Scopus citations

Abstract

Electrical interconnects that adopt self-similar, serpentine layouts offer exceptional levels of stretchability in systems that consist of collections of small, non-stretchable active devices in the so-called island-bridge design. This paper develops analytical models of flexibility and elastic stretchability for such structures, and establishes recursive formulae at different orders of self-similarity. The analytic solutions agree well with finite element analysis, with both demonstrating that the elastic stretchability more than doubles when the order of the self-similar structure increases by one. Design optimization yields 90% and 50% elastic stretchability for systems with surface filling ratios of 50% and 70% of active devices, respectively.

Original languageEnglish (US)
Pages (from-to)7816-7827
Number of pages12
JournalActa Materialia
Volume61
Issue number20
DOIs
StatePublished - Dec 1 2013

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

Fingerprint Dive into the research topics of 'Mechanics of ultra-stretchable self-similar serpentine interconnects'. Together they form a unique fingerprint.

  • Cite this

    Zhang, Y., Fu, H., Su, Y., Xu, S., Cheng, H., Fan, J. A., Hwang, K. C., Rogers, J. A., & Huang, Y. (2013). Mechanics of ultra-stretchable self-similar serpentine interconnects. Acta Materialia, 61(20), 7816-7827. https://doi.org/10.1016/j.actamat.2013.09.020