Cooperative motion and growing length scales in supercooled confined liquids

2002/04/08 by Peter Scheidler, P Scheidler, Walter Kob +3 · 246 citations
Chemistry · Materials Science · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Dynamical heterogeneity #Dynamics (music) #Material Dynamics and Properties #Molecular dynamics #Motion (physics) #Relaxation (psychology) #Supercooling #Theoretical and Computational Physics #cond-mat.dis-nn #cond-mat.stat-mech

paper · pdf · doi:10.1209/epl/i2002-00182-9

published in Europhysics Letters (EPL) 59(5), 701-707 (Institute of Physics) · 7 pages of Latex, 3 figures

arxiv created 2002/04/08 · openalex publication_date 2002/09/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Using molecular-dynamics simulations we investigate the relaxation dynamics of a supercooled liquid close to a rough as well as to a smooth wall. For the former situation the relaxation times increase strongly with decreasing distance from the wall, whereas in the second case they strongly decrease. We use this dependence to extract various dynamical length scales and show that they grow with decreasing temperature. Finally, we calculate the frequency-dependent average susceptibility of such confined systems and show that they compare very well with experimental data.

Citations

• On the Temperature Dependence of Cooperative Relaxation Properties in Glass-Forming Liquids
• The Nature of the Glassy State and the Behavior of Liquids at Low Temperatures.
• Glass transitions and dynamics in thin polymer films: dielectric relaxation of thin films of polystyrene

Cited by

• Crossovers in the dynamics of supercooled liquids probed by an amorphous wall
• Influence of confinement on dynamical heterogeneities in dense colloidal samples
• Confinement effects on glass forming liquids probed by dynamic mechanical analysis
• Confinement-induced demixing and crystallization