Single-particle and collective slow dynamics of colloids in porous confinement

Abstract

Using molecular dynamics simulations we study the slow dynamics of a hard sphere fluid confined in a disordered porous matrix. The presence of both discontinuous and continuous glass transitions as well as the complex interplay between single-particle and collective dynamics are well captured by a recent extension of mode-coupling theory for fluids in porous media. The degree of universality of the mode-coupling theory predictions for related models of colloids is studied by introducing size-disparity between fluid and matrix particles, as well as softness in the interactions.

arXiv comment4 pages, 5 figures, minor revisions

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• Predicting how nanoconfinement changes the relaxation time of a supercooled liquid
• The Localization Transition of the Two-Dimensional Lorentz Model
• Slow dynamics in random media: Crossover from glass to localization transition
• Localization dynamics of fluids in random confinement
• Multiple reentrant glass transitions in confined hard-sphere glasses
• Splitting of the universality class of anomalous transport in crowded media
• Mode-coupling theory predictions for the dynamical transitions of the partly pinned fluid systems
• Theory of diffusion-influenced reactions in complex geometries
• Crossover from normal to anomalous diffusion in field-aligned dipolar systems
• Dynamic arrest of colloids in porous environments: disentangling crowding and confinement
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• Statistical mechanics of homogeneous partly pinned fluid systems
• Interplay between percolation and glassiness in the random Lorentz gas
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• Tagged-particle motion in a dense confined liquid
• Anomalous transport of a tracer on percolating clusters
• Dynamic arrest in model porous media -- intermediate scattering functions
• Cooperative heterogeneous facilitation: multiple glassy states and glass-glass transition
• Classical Liquids in Fractal Dimension
• Space-resolved dynamics of a tracer in a disordered solid
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• Nonergodicity parameters of confined hard-sphere glasses
• Dynamic heterogeneities and non-Gaussian behavior in two-dimensional randomly confined colloidal fluids
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