Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
977494 | Physica A: Statistical Mechanics and its Applications | 2006 | 12 Pages |
Abstract
An analysis of water clustering is used to study the quasi-2D percolation transition of water adsorbed at planar hydrophilic surfaces. Above the critical temperature of the layering transition (quasi-2D liquid-vapor phase transition of adsorbed molecules) a percolation transition occurs at some threshold surface coverage, which increases with increasing temperature. The location of the percolation line is consistent with the existence of a percolation transition at the critical point. The percolation threshold at a planar surface is weakly sensitive to the size of the system when its lateral dimension increases from 80 to 150Â Ã
. The size distribution of the largest water cluster shows a specific two-peaks structure in a wide range of surface coverage: the lower- and higher-size peaks represent contributions from non-spanning and spanning clusters, respectively. The ratio of the average sizes of spanning and non-spanning largest clusters is about 1.8 for all studied planes. The two-peak structure becomes more pronounced with decreasing size of the planar surface and strongly enhanced at spherical surfaces.
Related Topics
Physical Sciences and Engineering
Mathematics
Mathematical Physics
Authors
A. Oleinikova, I. Brovchenko, A. Geiger,