Interfacial Effects on Nanoscale Wrinkling in Gold-Covered Polystyrene

Craig T. Chapman*, Jeffrey T. Paci, Won Kyu Lee, Clifford J. Engel, Teri W. Odom, George C. Schatz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Nanoscale wrinkling on the surfaces of polymer-based materials can be precisely controlled by depositing thin metal films of varying thicknesses. The deposition of these films fundamentally alters the mechanical properties of the substrates in ways that are not simply described using traditional continuum mechanical frameworks. In particular, we find, by modeling within a finite element analysis approach, that the very act of depositing a metal film may alter the Young's modulus of the polymer substrate to depths of up to a few hundred nanometers, creating a modified interfacial skin layer. We find that simulated wrinkle patterns reproduce the experimentally observed features only when the modulus of this surface layer varies by more than ∼500 nm and is described using a sigmoidal gradient multiplier.

Original languageEnglish (US)
Pages (from-to)24339-24344
Number of pages6
JournalACS Applied Materials and Interfaces
Issue number37
StatePublished - Sep 21 2016


  • finite element simulations
  • interfaces
  • polystyrene
  • surfaces
  • thin films
  • wrinkles

ASJC Scopus subject areas

  • Materials Science(all)


Dive into the research topics of 'Interfacial Effects on Nanoscale Wrinkling in Gold-Covered Polystyrene'. Together they form a unique fingerprint.

Cite this