WIAS Preprint No. 1192, (2006)

Slip vs. viscoelasticity in dewetting thin films



Authors

  • Blossey, Ralf
  • Münch, Andreas
  • Rauscher, Markus
  • Wagner, Barbara

2010 Mathematics Subject Classification

  • 76D08 76E17 74D05

2008 Physics and Astronomy Classification Scheme

  • 83.60.Bc, 47.50.+d, 68.15.+e

Keywords

  • Linear viscoelasticity, non-Newtonian fluid flows, thin liquid films

Abstract

Ultrathin polymer films on non-wettable substrates display dynamic features which have been attributed to either viscoelastic or slip effects. Here we show that in the weak and strong slip regime effects of viscoelastic relaxation are either absent or essentially indistinguishable from slip effects. Strong-slip modifies the fastest unstable mode in a rupturing thin film, which questions the standard approach to reconstruct the effective interface potential from dewetting experiments.

Appeared in

  • Eur. Phys. J. E -- Soft Matter, 20 (2006) pp. 267-271.

Download Documents