TY - JOUR
T1 - Percolation of immobile domains in supercooled thin polymeric films
AU - Baljon, Arlette R.C.
AU - Billen, Joris
AU - Khare, Rajesh
N1 - Funding Information:
The authors gratefully acknowledge support by a grant from the Donors of the Petroleum Research Fund. Moreover, we acknowledge Professor M. A. J. Michels for bringing the theoretical percolation model to our attention. We thank Travis Depuy for rendering Fig. 4. J. B. acknowledges the Department of Applied Physics at the Technical University of Eindhoven for financial support.
PY - 2004/12/17
Y1 - 2004/12/17
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=42749098180&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.93.255701
DO - 10.1103/PhysRevLett.93.255701
M3 - Article
AN - SCOPUS:42749098180
SN - 0031-9007
VL - 93
JO - Physical Review Letters
JF - Physical Review Letters
IS - 25
M1 - 255701
ER -