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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/16023

Title: Dynamics in inhomogeneous liquids and glasses via the test particle limit
Authors: Archer, Andrew J.
Hopkins, Paul
Schmidt, Matthias
Issue Date: 2007
Publisher: © The American Physical Society
Citation: ARCHER, A.J., HOPKINS, P. and SCHMIDT, M., 2007. Dynamics in inhomogeneous liquids and glasses via the test particle limit. Physical Review E, 75 (4), 040501.
Abstract: We show that one may view the self-part and the distinct-part of the van Hove dynamic correlation function of a simple fluid as the one-body density distributions of a binary mixture that evolve in time according to dynamical density functional theory. For a test case of soft-core Brownian particles the theory yields results for the van Hove function that agree quantitatively with those of our Brownian dynamics computer simulations. At sufficiently high densities the free energy landscape underlying the dynamics exhibits a barrier as a function of the mean particle displacement, shedding new light on the nature of glass formation. For hard spheres confined between parallel planar walls the barrier height oscillates in phase with the local density, implying that the mobility is maximal between layers, which should be experimentally observable in confined colloidal dispersions.
Description: This article was published in the journal, Physical Review E [© The American Physical Society].
Sponsor: A.J.A. and P.H. are grateful for the support of EPSRC, and M.S. thanks the DFG for support through the SFB TR6/D3.
Version: Published
DOI: 10.1103/PhysRevE.75.040501
URI: https://dspace.lboro.ac.uk/2134/16023
Publisher Link: http://dx.doi.org/10.1103/PhysRevE.75.040501
ISSN: 1539-3755
Appears in Collections:Published Articles (Maths)

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