The relaxation dynamics of a simple glass former confined in a pore

Details The relaxation dynamics of a simple glass former confined in a pore The relaxation dynamics of a simple glass former confined in a pore

2000-03-15

arxiv.org/abs/cond-mat/0003257v1

Europhys. Lett., 52, 277(2000)

Physics

Condensed Matter

Statistical Mechanics

9 pages of Latex, 4 figures

Scientific paper

10.1209/epl/i2000-00435-1

We use molecular dynamics computer simulations to investigate the relaxation dynamics of a binary Lennard-Jones liquid confined in a narrow pore. We find that the average dynamics is strongly influenced by the confinement in that time correlation functions are much more stretched than in the bulk. By investigating the dynamics of the particles as a function of their distance from the wall, we can show that this stretching is due to a strong dependence of the relaxation time on this distance, i.e. that the dynamics is spatially very heterogeneous. In particular we find that the typical relaxation time of the particles close to the wall is orders of magnitude larger than the one of particles in the center of the pore.

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