Percolation of Immobile Domains in Supercooled Thin Polymeric Films
arXiv:cond-mat/0409001 · doi:10.1103/PhysRevLett.93.255701
Abstract
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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- Molecular dynamics simulations of glassy polymers
- Glass Transition Behavior of Polymer Films of Nanoscopic Dimensions
- Heterogeneities in the Glassy State
- Phase diagram of the vortex system in layered superconductors with strong columnar pinning
- Phase diagram of randomly pinned vortex matter in layered superconductors: dependence on the details of the point pinning