结构玻璃形成体的对应态。

Corresponding states of structural glass formers.

作者信息

Elmatad Yael S, Chandler David, Garrahan Juan P

机构信息

Department of Chemistry, University of California, Berkeley, California 94720, USA.

出版信息

J Phys Chem B. 2009 Apr 23;113(16):5563-7. doi: 10.1021/jp810362g.

DOI:10.1021/jp810362g

PMID:19254014

Abstract

The variation with respect to temperature T of transport properties of 58 fragile structural glass-forming liquids (67 data sets in total) are analyzed and shown to exhibit a remarkable degree of universality. In particular, super-Arrhenius behaviors of all supercooled liquids appear to collapse to one parabola for which there is no singular behavior at any finite temperature. This behavior is bounded by an onset temperature T(o) above which liquid transport has a much weaker temperature dependence. A similar collapse is also demonstrated over the smaller available range for existing numerical simulation data.

摘要

对58种易碎结构玻璃形成液体（总共67个数据集）的输运性质随温度T的变化进行了分析，结果表明其呈现出显著的普适性。特别是，所有过冷液体的超阿累尼乌斯行为似乎都汇聚到一条抛物线上，在任何有限温度下都没有奇异行为。这种行为受起始温度T(o)的限制，高于该温度时液体输运对温度的依赖性要弱得多。在现有数值模拟数据的较小可用范围内也证明了类似的汇聚情况。