Sun, 06 Jul 2008 11:09:17 BST CiteULike: dchens Andersen http://www.citeulike.org/user/dchen/author/Andersen CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dchen/article/1259610 <i>PNAS, Vol. 102, No. 19. (10 May 2005), pp. 6686-6691.</i><br /><br />Supercooled liquids near the glass transition exhibit the phenomenon of heterogeneous relaxation; at any specific time, a nominally homogeneous equilibrium fluid undergoes dynamic fluctuations in its structure on a molecular distance scale with rates that are very different in different regions of the sample. Several theoretical and simulation studies have suggested a change in the nature of the dynamics of fluids as they are supercooled, leading to the concept of a dynamic crossover that is often associated with mode coupling theory. Here, we will review the use of molecular dynamics computer simulation methods to investigate heterogeneous dynamics and dynamic crossovers in models of atomic liquids. 10.1073/pnas.0500946102 Chemical Theory and Computation Special Feature: Molecular dynamics studies of heterogeneous dynamics and dynamic crossover in supercooled atomic liquids Hans Andersen doi:10.1073/pnas.0500946102 PNAS, Vol. 102, No. 19. (10 May 2005), pp. 6686-6691. 2007-04-27T09:47:54-00:00 2005 PNAS 102 19 6686 6691 heterogeneity theory