Nonsinusoidal buckling of thin gold films on elastomeric substrates

Huiyang Fei, Hanqing Jiang, Dahl Young Khang

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Buckling of stiff thin films on compliant substrates represents a variety of applications, ranging from stretchable electronics to micro-nanometrology. Different but complementary to previously reported sinusoidal buckling waves, this letter presents a nonsinusoidal surface profile of buckled thin Au films on compliant substrates, specifically, a secondary dip on top of buckling wave or rather broadened wave top with very sharp trough. This nonsinusoidal profile is likely due to tension/compression asymmetry, i.e., different strengths in tension and compression resulted from the polycrystalline, grained microstructure of metal film. Finite element analysis with asymmetric tension/compression material model has reproduced the experiments well qualitatively.

Original languageEnglish (US)
Pages (from-to)L9-L13
JournalJournal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume27
Issue number3
DOIs
StatePublished - 2009

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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