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

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

2009-06-04

arxiv.org/abs/0906.0929v2

Phys. Rev. Lett. 103, 138303 (2009)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 5 figures, minor revisions

Scientific paper

10.1103/PhysRevLett.103.138303

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.

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