Wrinkling of a charged elastic film on a viscous layer

Xiang Fa Wu, Yuris A. Dzenis, Kyle W. Strabala

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

A thin metallic film deposited on a compliant polymeric substrate begins to wrinkle under compression induced in curing process and afterwards cooling of the system. The wrinkle mode depends upon the thin film elasticity, thickness, compressive strain, as well as mechanical properties of the compliant substrate. This paper presents a simple model to study the modulation of the wrinkle mode of thin metallic films bonded on viscous layers in external electric field. During the procedure, linear perturbation analysis was performed for determining the characteristic relation that governs the evolution of the plane-strain wrinkle of the thin films under varying conditions, i.e., the maximally unstable wrinkle mode as a function of the film surface charge, film elasticity and thickness, misfit strain, as well as thickness and viscosity of the viscous layer. It shows that, in proper electric field, thin film may wrinkle subjected to either compression or tension. Therefore, external electric field can be employed to modulate the wrinkle mode of thin films. The present results can be used as the theoretical basis for wrinkling analysis and mode modulation in surface metallic coatings, drying adhesives and paints, and microelectromechanical systems (MEMS), etc.

Original languageEnglish (US)
Pages (from-to)273-282
Number of pages10
JournalMeccanica
Volume42
Issue number3
DOIs
StatePublished - Jun 2006

Keywords

  • Applied mechanics
  • Pattern modulation
  • Thin films
  • Viscous flow
  • Wrinkling

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Wrinkling of a charged elastic film on a viscous layer'. Together they form a unique fingerprint.

  • Cite this