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Density functional theory study of the nematic-isotropic transition in an hybrid cel

 

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dc.creator Rodríguez Ponce, Inmaculada es
dc.creator Romero Enrique, José Manuel es
dc.creator Rull Fernández, Luis Felipe es
dc.date.accessioned 2016-04-04T09:39:23Z
dc.date.available 2016-04-04T09:39:23Z
dc.date.issued 2005
dc.identifier.citation Rodríguez Ponce, I., Romero Enrique, J.M. y Rull Fernández, L.F. (2005). Density functional theory study of the nematic-isotropic transition in an hybrid cel. The Journal of Chemical Physics, 122 (1), 014903.
dc.identifier.issn 1089-7690 es
dc.identifier.uri http://hdl.handle.net/11441/39399
dc.description.abstract We have employed the density functional theory formalism to investigate the nematic–isotropic capillary transitions of a nematogen confined by walls that favor antagonist orientations to the liquid crystal molecules ~hybrid cell!. We analyze the behavior of the capillary transition as a function of the fluid–substrate interactions and the pore width. In addition to the usual capillary transition between isotropiclike to nematiclike states, we find that this transition can be suppressed when one substrate is wet by the isotropic phase and the other by the nematic phase. Under this condition the system presents interfacelike states which allow us to continuously transform the nematiclike phase to the isotropiclike phase without undergoing a sharp phase transition. Two different mechanisms for the disappearance of the capillary transition are identified. When the director of the nematiclike state is homogeneously planar-anchored with respect to the substrates, the capillary transition ends up in a critical point. This scenario is analogous to the observed in Ising models when confined in slit pores with opposing surface fields which have critical wetting transitions. When the nematiclike state has a linearly distorted director field, the capillary transition continuously transforms in a transition between two nematiclike states es
dc.format application/pdf es
dc.language.iso eng es
dc.publisher AIP Publishing es
dc.relation.ispartof The Journal of Chemical Physics, 122 (1), 014903.
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 Internacional *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ *
dc.title Density functional theory study of the nematic-isotropic transition in an hybrid cel es
dc.type info:eu-repo/semantics/article es
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 10.1063/1.1829041 es
dc.relation.publisherversion http://dx.doi.org/10.1063/1.1829041 es
dc.identifier.doi 10.1063/1.1829041 es
dc.journaltitle The Journal of Chemical Physics es
dc.publication.volumen 122 es
dc.publication.issue 1 es
dc.publication.initialPage 014903 es
dc.publication.endPage es
dc.identifier.idus https://idus.us.es/xmlui/handle/11441/39399
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