Percolation, depinning, and avalanches in capillary condensation of gases in disordered porous solids

Details Percolation, depinning, and avalanches in capillary condensation of gases in disordered porous solids Percolation, depinning, and avalanches in capillary condensation of gases in disordered porous solids

2002-06-07

arxiv.org/abs/cond-mat/0206108v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages, 5 figures

Scientific paper

10.1209/epl/i2003-00407-y

We propose a comprehensive theoretical description of hysteresis in capillary condensation of gases in mesoporous disordered materials. Applying mean-field density functional theory to a coarse-grained lattice-gas model, we show that the morphology of the hysteresis loops is influenced by out-of-equilibrium transitions that are different on filling and on draining. In particular, desorption may be associated to a depinning process and be percolation-like without explicit pore-blocking effects.

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