Finite deformation mechanics in buckled thin films on compliant supports

Hanqing Jiang, Dahl Young Khang, Jizhou Song, Yugang Sun, Yonggang Huang*, John A. Rogers

*Corresponding author for this work

Research output: Contribution to journalArticle

429 Citations (Scopus)

Abstract

We present detailed experimental and theoretical studies of the mechanics of thin buckled films on compliant substrates. In particular, accurate measurements of the wavelengths and amplitudes in structures that consist of thin, single-crystal ribbons of silicon covalently bonded to elastomeric substrates of poly(dimethylsiloxane) reveal responses that include wavelengths that change in an approximately linear fashion with strain in the substrate, for all values of strain above the critical strain for buckling. Theoretical reexamination of this system yields analytical models that can explain these and other experimental observations at a quantitative level. We show that the resulting mechanics has many features in common with that of a simple accordion bellows. These results have relevance to the many emerging applications of controlled buckling structures in stretchable electronics, microelectromechanical systems, thin-film metrology, optical devices, and others.

Original languageEnglish (US)
Pages (from-to)15607-15612
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume104
Issue number40
DOIs
StatePublished - Oct 2 2007

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Mechanics
Optical Devices
Silicon
Theoretical Models
baysilon
elastomeric

Keywords

  • Buckling
  • Compliant substrate
  • Stiff thin film
  • Stretchable electronics

ASJC Scopus subject areas

  • General

Cite this

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Finite deformation mechanics in buckled thin films on compliant supports. / Jiang, Hanqing; Khang, Dahl Young; Song, Jizhou; Sun, Yugang; Huang, Yonggang; Rogers, John A.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 104, No. 40, 02.10.2007, p. 15607-15612.

Research output: Contribution to journalArticle

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AU - Rogers, John A.

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