Interface Unbinding in Structured Wedges

Details Interface Unbinding in Structured Wedges Interface Unbinding in Structured Wedges

2005-01-19

arxiv.org/abs/cond-mat/0501452v1

Physics

Condensed Matter

Statistical Mechanics

5 pages, 5 figures, to appear in Phys. Rev. E

Scientific paper

10.1103/PhysRevE.71.021603

The unbinding properties of an interface near structured wedges are investigated by discrete models with short range interactions. The calculations demonstrate that interface unbinding take place in two stages: $i$) a continuous filling--like transition in the pure wedge--like parts of the structure; $ii$) a conclusive discontinuous unbinding. In 2$D$ an exact transfer matrix approach allows to extract the whole interface phase diagram and the precise mechanism at the basis of the phenomenon. The Metropolis Monte Carlo simulations performed in 3$D$ reveal an analogous behavior. The emerging scenario allows to shed new light onto the problem of wetting of geometrically rough walls.

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