4th International workshop on nonequilibrium thermodynamics and complex fluids

	IWNET 2006	4th International workshop on nonequilibrium thermodynamics and complex fluids 3-7 september 2006, Rhodes, Greece

Home Scope Location Speakers Program Abstracts Author index Organizing Committee Scientific Committee Venue & Accomodation Registration News Contact		ORAL PRESENTATION Session: 4 Complex fluid deformation and rheology: Theories and thermodynamic relationships (scheduled: Tuesday, 09:15 ) Relationship between heterogeneous dynamics and internal stress M.T. Downton, M.P. Kennett Simon Fraser University, USA The low temperature breakdown of the linear relationship between viscosity and translational diffusion is commonly attributed to the appearance of heterogeneous dynamics that occurs when a liquid is cooled. While diffusion is predominantly due to mobile particles (fast relaxation), viscosity is related to the stress autocorrelation function (slow relaxation), this difference in averages, coupled with the broadened distribution of relaxation timescales leads to the breakdown. In this work we consider the relaxation and spatial variance of the local stress tensor and its relationship to the particle mobility and force network using simulations of cooled binary mixtures. We make direct comparisons of our off-lattice results with recent work on dynamic facilitation. © IWNET 2006

		© and Kleanthi for IWNET 2006