dc.creator | Silvestre, Nuno M. | |
dc.creator | Eskandari, Zahra | |
dc.creator | Patrício, Pedro | |
dc.creator | Romero Enrique, José Manuel | |
dc.creator | Telo Da Gama, Margarida Maria | |
dc.date.accessioned | 2016-03-30T08:06:47Z | |
dc.date.available | 2016-03-30T08:06:47Z | |
dc.date.issued | 2012 | |
dc.identifier.issn | 1539-3755 | es |
dc.identifier.uri | http://hdl.handle.net/11441/39109 | |
dc.description.abstract | 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 bent isotropic-nematic
interfaces, which persist for surfaces structured on large scales, compared to the nematic correlation length. The
global phase diagram displays two wet and four filled states, all separated by first-order transitions. For crenels
in the intermediate regime re-entrant filling transitions driven by the anchoring strength are observed | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | American Physical Society | es |
dc.relation.ispartof | Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 86 (1), 011703 | es |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.title | Nematic wetting and filling of crenellated surfaces | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear | es |
dc.relation.publisherversion | 10.1103/PhysRevE.86.011703 | es |
dc.identifier.doi | http://dx.doi.org/10.1103/PhysRevE.86.011703 | es |
dc.identifier.idus | https://idus.us.es/xmlui/handle/11441/39109 | |