Percolation of immobile domains in supercooled thin polymeric films

Arlette R.C. Baljon, Joris Billen, Rajesh Khare

Research output: Contribution to journalArticle

40 Scopus citations

Abstract

Heterogeneous dynamics in molecular dynamics simulations of polymeric film supported by an absorbing surface was analyzed. A bead-spring model for polymers was used to show that slow, immobile beads occur throughout the films, with the probability of their occurrence decreasing with distance from the substrate. The percolation transition was found to be very sensitive to the properties of the layer near the free surface. The results show that immobile beads show a preference for the region near the attracting substrate where the energy barriers for bead motion are high.

Original languageEnglish
Article number255701
JournalPhysical Review Letters
Volume93
Issue number25
DOIs
StatePublished - Dec 17 2004

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