dc.creator | Rojas-Gómez, O.A. | es |
dc.creator | Romero Enrique, José Manuel | es |
dc.date.accessioned | 2016-04-04T11:50:49Z | |
dc.date.available | 2016-04-04T11:50:49Z | |
dc.date.issued | 2012 | |
dc.identifier.citation | Rojas-Gómez, O.A. y Romero Enrique, J.M. (2012). Generalized Berreman's model of the elastic surface free energy of a nematic liquid crystal on a sawtoothed substrate. Physical Review E - Statistical, 86 (4), 041706-1-041706-10. | es |
dc.identifier.issn | 1539-3755 | es |
dc.identifier.uri | http://hdl.handle.net/11441/39437 | |
dc.description.abstract | In this paper we present a generalization of Berreman’s model for the elastic contribution to the surface
free-energy density of a nematic liquid crystal in presence of a sawtooth substrate which favors homeotropic
anchoring as a function of the wave number of the surface structure q, the tilt angle α, and the surface anchoring
strength w. In addition to the previously reported nonanalytic contribution proportional to −q ln q, due to the
nucleation of disclination lines at the wedge bottoms and apexes of the substrate, the next-to-leading contribution is
proportional to q for a given substrate roughness, in agreement with Berreman’s predictions.We characterize this
term, finding that it has two contributions: the deviations of the nematic director field with respect to a reference
field corresponding to the isolated disclination lines and their associated core free energies. Comparison with the
results obtained from the Landau-de Gennes model shows that our model is quite accurate in the limit wL > 1,
when strong anchoring conditions are effectively achieved | 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 (4), 041706-1/041706-10 | es |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.title | Generalized Berreman's model of the elastic surface free energy of a nematic liquid crystal on a sawtoothed substrate | 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.86.041706 | es |
dc.identifier.doi | http://dx.doi.org/10.1103/PhysRevE.86.041706 | es |
dc.journaltitle | Physical Review E - Statistical | es |
dc.publication.volumen | 86 | es |
dc.publication.issue | 4 | es |
dc.publication.initialPage | 041706-1 | es |
dc.publication.endPage | 041706-10 | es |
dc.identifier.idus | https://idus.us.es/xmlui/handle/11441/39437 | |