A novel nano-bubble inflation method for determining the viscoelastic properties of ultrathin polymer films

P. A. O'Connell, G. B. Mckenna

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

We describe a novel experimental technique for measuring the absolute creep compliance of ultrathin polymer films. The method is based on the classical bubble inflation technique for measuring the biaxial creep compliance of films, reduced in size to measure films with thicknesses down to at least 11.3 nm. The method uses the imaging capabilities of the atomic force microscope (AFM) to determine the time evolution of the geometry of nano-bubbles and thus avoids the problems with data interpretation that can arise due to "contact mechanics" issues when the AFM is used as a direct mechanical testing device.

Original languageEnglish
Pages (from-to)184-196
Number of pages13
JournalScanning
Volume30
Issue number2
DOIs
StatePublished - Mar 2008

Keywords

  • Atomic force microscopy
  • Glass transition
  • Polymers
  • Ultra thin films
  • Viscoelastic properties

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