Phys. Rev. Lett. 103, 138303 (2009) [4 pages]Single-Particle and Collective Slow Dynamics of Colloids in Porous ConfinementReceived 21 May 2009; published 24 September 2009 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. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.138303
DOI:
10.1103/PhysRevLett.103.138303
PACS:
82.70.Dd, 46.65.+g, 64.70.pv, 83.10.Rs
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