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Controlling the order of wedge filling transitions: the role of line tension

Opened Access Controlling the order of wedge filling transitions: the role of line tension

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Autor: Romero Enrique, José Manuel
Departamento: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Fecha: 2007
Publicado en: New Journal of Physics, 9, 1-23.
Tipo de documento: Artículo
Resumen: We study filling phenomena in 3D wedge geometries paying particular attention to the role played by a line tension associated with the wedge bottom. Our study is based on transfer matrix analysis of an effective one dimensional model of 3D filling which accounts for the breather-mode excitations of the interfacial height. The transition may be first-order or continuous (critical) depending on the strength of the line tension associated with the wedge bottom. Exact results are reported for the interfacial properties near filling with both short-ranged (contact) forces and also van der Waals interactions. For sufficiently short-ranged forces we show the lines of critical and first-order filling meet at a tricritical point. This contrasts with the case of dispersion forces for which the lines meet at a critical end-point. Our transfer matrix analysis is compared with generalized random-walk arguments based on a necklace model and is shown to be a thermodynamically consistent description ...
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Cita: Romero Enrique, J.M. (2007). Controlling the order of wedge filling transitions: the role of line tension. New Journal of Physics, 9, 1-23.
Tamaño: 335.7Kb
Formato: PDF

URI: http://hdl.handle.net/11441/17488

DOI: 10.1088/1367-2630/9/6/167

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