Percolation of Immobile Domains in Supercooled Thin Polymeric Films

Details Percolation of Immobile Domains in Supercooled Thin Polymeric Films Percolation of Immobile Domains in Supercooled Thin Polymeric Films

2004-08-31

arxiv.org/abs/cond-mat/0409001v1

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1103/PhysRevLett.93.255701

We present an analysis of heterogeneous dynamics in molecular dynamics simulations of a thin polymeric film, supported by an absorbing structured surface. Near the glass transition "immobile" domains occur throughout the film, yet the probability of their occurrence decreasing with larger distance from the surface. Still, enough immobile domains are located near the free surface to cause them to percolate in the direction perpendicular to surface, at a temperature near the glass transition temperature. This result is in agreement with a recent theoretical model of glass transition.

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