Repositorio de producción científica de la Universidad de Sevilla

Nematic wetting and filling of crenellated surfaces

Opened Access Nematic wetting and filling of crenellated surfaces

Citas

buscar en

Estadísticas
Icon
Exportar a
Autor: Silvestre, Nuno M.
Eskandari, Zahra
Patricio, Pedro
Romero Enrique, José Manuel
Telo Da Gama, Margarida Maria
Departamento: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Fecha: 2012
Publicado en: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 86 (1), 011703
Tipo de documento: Artículo
Resumen: We investigate nematic wetting and filling transitions of crenellated surfaces (rectangular gratings) by numerical minimization of the Landau–de Gennes free energy as a function of the anchoring strength, for a wide range of the surface geometrical parameters: depth, width, and separation of the crenels. We have found a rich phase behavior that depends in detail on the combination of the surface parameters. By comparison to simple fluids, which undergo a continuous filling or unbending transition, where the surface changes from a dry to a filled state, followed by a wetting or unbinding transition, where the thickness of the adsorbed fluid becomes macroscopic and the interface unbinds from the surface, nematics at crenellated surfaces reveal an intriguingly rich behavior: in shallow crenels only wetting is observed, while in deep crenels, only filling transitions occur; for intermediate surface geometrical parameters, a new class of filled states is found, characterized by ben...
[Ver más]
Tamaño: 795.3Kb
Formato: PDF

URI: http://hdl.handle.net/11441/39109

DOI: http://dx.doi.org/10.1103/PhysRevE.86.011703

Mostrar el registro completo del ítem


Esta obra está bajo una Licencia Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internacional

Este registro aparece en las siguientes colecciones