Capillary wave confinement-induced stabilization of polymer films

Journal Article (Journal Article)

We show that temporary confinement of polystyrene thin films by an elastomeric capping layer possessing nanoimprinted subcapillary wavelength (λ ≪ λcap (20 μm)) line channels (amplitude A ≈ 120 nm) can suppress film dewetting on thermodynamically unfavorable substrates by arresting the amplitude growth and in-plane propagation of the destabilizing surface capillary waves. Confinement by either a smooth elastomer capping layer (A ≈ 1 nm) or with pattern features above the threshold dimension only retards dewetting but does not prevent it. The nanoimprint pattern is therefore essential to preventing dewetting, illustrating that only the penalty of elastomer deformation and interfacial tension reduction is insufficient. © 2013 American Chemical Society.

Full Text

Duke Authors

Cited Authors

  • Bandyopadhyay, D; Singh, G; Becker, ML; Karim, A

Published Date

  • May 22, 2013

Published In

Volume / Issue

  • 5 / 10

Start / End Page

  • 4006 - 4010

Electronic International Standard Serial Number (EISSN)

  • 1944-8252

International Standard Serial Number (ISSN)

  • 1944-8244

Digital Object Identifier (DOI)

  • 10.1021/am4002502

Citation Source

  • Scopus