Edge effects in buckled thin films on elastomeric substrates

C. T. Koh, Z. J. Liu, Dahl-Young Khang, J. Song, C. Lu, Y. Huang, J. A. Rogers, C. G. Koh

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Buckled thin films on elastomeric substrates have many applications. Films of this type exhibit periodic, sinusoidal "wavy" relief profiles, except near edges that lie perpendicular to the wavevector associated with waves. In these locations, the amplitudes of the waves steadily decrease until the films become completely flat, in a manner that can be used to advantage in applications. This paper quantitatively describes the mechanics of this phenomenon. The finite element analysis shows that the edge effect results from the traction-free boundary condition. The edge-effect length is proportional to the thin-film thickness, and decreases with the increasing prestrain and substrate modulus.

Original languageEnglish
Article number133113
JournalApplied Physics Letters
Volume91
Issue number13
DOIs
Publication statusPublished - 2007 Oct 5

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thin films
free boundaries
traction
film thickness
boundary conditions
profiles

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Koh, C. T., Liu, Z. J., Khang, D-Y., Song, J., Lu, C., Huang, Y., ... Koh, C. G. (2007). Edge effects in buckled thin films on elastomeric substrates. Applied Physics Letters, 91(13), [133113]. https://doi.org/10.1063/1.2791004
Koh, C. T. ; Liu, Z. J. ; Khang, Dahl-Young ; Song, J. ; Lu, C. ; Huang, Y. ; Rogers, J. A. ; Koh, C. G. / Edge effects in buckled thin films on elastomeric substrates. In: Applied Physics Letters. 2007 ; Vol. 91, No. 13.
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Koh, CT, Liu, ZJ, Khang, D-Y, Song, J, Lu, C, Huang, Y, Rogers, JA & Koh, CG 2007, 'Edge effects in buckled thin films on elastomeric substrates', Applied Physics Letters, vol. 91, no. 13, 133113. https://doi.org/10.1063/1.2791004

Edge effects in buckled thin films on elastomeric substrates. / Koh, C. T.; Liu, Z. J.; Khang, Dahl-Young; Song, J.; Lu, C.; Huang, Y.; Rogers, J. A.; Koh, C. G.

In: Applied Physics Letters, Vol. 91, No. 13, 133113, 05.10.2007.

Research output: Contribution to journalArticle

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