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Space-resolved dynamics of a tracer in a disordered solid
Journal article   Peer reviewed

Space-resolved dynamics of a tracer in a disordered solid

T. Franosch, M. Spanner, T. Bauer, G.E. Schröder-Turk and F. Höfling
Journal of Non-Crystalline Solids, Vol.357(2), pp.472-478
2011
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Abstract

The dynamics of a tracer particle in a glassy matrix of obstacles displays slow complex transport as the free volume approaches a critical value and the void space falls apart. We investigate the emerging subdiffusive motion of the test particle by extensive molecular dynamics simulations and characterize the spatio-temporal transport in terms of two-time correlation functions, including the time-dependent diffusion coefficient, the frequency-dependent conductivity, as well as the wavenumber-dependent intermediate scattering function. We rationalize our findings within the framework of critical phenomena and compare our data to a dynamic scaling theory.

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Collaboration types
Domestic collaboration
International collaboration
Citation topics
2 Chemistry
2.39 Polymer Science
2.39.712 Glass Transition
Web Of Science research areas
Materials Science, Ceramics
Materials Science, Multidisciplinary
ESI research areas
Physics
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