期刊
JOURNAL OF PHYSICS-CONDENSED MATTER
卷 14, 期 40, 页码 9295-9315出版社
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/14/40/319
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We present a theoretical study of capillary condensation of fluids adsorbed in mesoporous disordered media, Combining mean-field density functional theory with a coarse-grained description in terms of a lattice-gas model allows us to investigate both the out-of-equilibrium (hysteresis) and the equilibrium behaviour. We show that the main features of capillary condensation in disordered solids result from the appearance of a complex free-energy landscape with a large number of metastable states. We detail the numerical procedures for finding these states, and the presence or absence of transitions in the thermodynamic limit is determined by careful finite-size studies.
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