6533b826fe1ef96bd1283cb9

RESEARCH PRODUCT

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

Walter KobKurt BinderPeter Scheidler

subject

SIMPLE (dark matter experiment)Materials scienceStatistical Mechanics (cond-mat.stat-mech)Relaxation (NMR)Dynamics (mechanics)General Physics and AstronomyFOS: Physical sciencesFunction (mathematics)Disordered Systems and Neural Networks (cond-mat.dis-nn)Condensed Matter - Disordered Systems and Neural NetworksTime correlationMolecular dynamicsOrders of magnitude (time)Chemical physicsCondensed Matter - Statistical Mechanics

description

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.

yearjournalcountryeditionlanguage
2000-03-15
https://dx.doi.org/10.48550/arxiv.cond-mat/0003257