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IRTG / Soft Matter Science
Freiburger Materialforschungszentrum
Stefan-Meier-Str. 21
79104 Freiburg, Germany

Contact: Jana Husse

+49 761 203 678 34
softmattergraduate[at]uni-freiburg.de


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You are here: Home Events Prof. Dr. James Forrest "The glass transition of polymers in confined geometries"

Prof. Dr. James Forrest "The glass transition of polymers in confined geometries"

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Department of Physics and Astronomy of the University of Waterloo, Ontario, Canada

What
  • Seminar
When Mar 14, 2016
from 03:15 PM to 04:00 PM
Where Seminarraum A, FMF, Stefan-Meier-Str. 21, Freiburg
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For over 20 years now, there has been significant interest on the properties of highly confined glass formers. In particular, measurements of the glass transition temperature (Tg) and related dynamics have sometimes shown significant differences from the properties of bulk materials. In this talk we will review the literature, and describe a simple physical picture that allows one to describe the measurements of apparently reduced Tg values in both thin films, and nano spheres. We will then introduce a simple free volume model for dynamics in glass forming materials where the importance of dynamical length scale is explicitly derived. That model is found to provide an excellent description of bulk and confined glass formers.

invited by Jörg Baschnagel

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