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Finite size effects on the phase diagram of a binary mixture confined between competing walls | | M. Mueller
; K. Binder
; E.V. Albano
; | | Date: |
2 May 2000 | | Journal: | Physica A 279 (2000) 188 | | Subject: | Statistical Mechanics; Soft Condensed Matter | cond-mat.stat-mech cond-mat.soft | | Affiliation: | Joh. Gutenberg Universitaet, Mainz, Germany | | Abstract: | A symmetrical binary mixture AB that exhibits a critical temperature T_{cb} of phase separation into an A-rich and a B-rich phase in the bulk is considered in a geometry confined between two parallel plates a distance D apart. It is assumed that one wall preferentially attracts A while the other wall preferentially attracts B with the same strength (’’competing walls’’). In the limit $D o infty$, one then may have a wetting transition of first order at a temperature T_{w}, from which prewetting lines extend into the one phase region both of the A-rich and the B-rich phase. It is discussed how this phase diagram gets distorted due to the finiteness of D% : the phase transition at T_{cb} immediately disappears for D | | Source: | arXiv, cond-mat/0005060 | | Services: | Forum | Review | PDF | Favorites | |
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