Capillary leveling of stepped films with inhomogeneous molecular mobility
ORAL
Abstract
The simple geometry of a polymer film on a substrate with a step at the free surface is unfavourable due to the excess interface induced by the step. Above the glass transition Laplace pressure gradients will drive flow, thus providing an excellent probe for nano-rheology. Here we recap some of our recent progress on the capillary leveling of stepped films. In particular, we present new studies on polymeric samples with precisely controlled, spatially inhomogeneous molecular weight distributions.
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Authors
Miriam Rafailovitch
McMaster University
Department of Physics and Astronomy, McMaster University, Hamilton, ON, Canada
Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, Canada, L8S 4M1
Department of Physics \& Astronomy, McMaster University, Hamilton, ON, Canada, L8S 4M1
Department of Physics \& Astronomy and the Brockhouse Institute for Materials Research, McMaster University, Hamilton, ON, Canada
Department of Physics and Astronomy, McMaster University
SUNY-Stony Brook
Joshua D. McGraw
Saarland University
Department of Experimental Physics, Saarland University, 66041 Saarbr\"{u}cken, Germany
