Cooperative motion and growing length scales in supercooled confined liquids

被引：236

作者：

Scheidler, P ^{[1
]}

Kob, W

Binder, K

机构：

[1] Univ Mainz, Inst Phys, D-55099 Mainz, Germany

[2] Univ Montpellier 2, Lab Verres, F-34000 Montpellier, France

来源：

EUROPHYSICS LETTERS | 2002年 / 59卷 / 05期

关键词：

D O I：

10.1209/epl/i2002-00182-9

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

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页码：701 / 707

页数：7

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