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Capillary ordering and layering transitions in two-dimensional hard-rod fluids

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dc.affiliation.dptoUC3M. Departamento de Matemáticases
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Interdisciplinar de Sistemas Complejos (GISC)es
dc.contributor.authorMartínez-Ratón, Yuri
dc.date.accessioned2010-02-24T08:58:43Z
dc.date.available2010-02-24T08:58:43Z
dc.date.issued2007-05
dc.description12 pages, 15 figures.-- PACS nrs.: 64.70.Md, 61.30.Hn, 61.20.Gy.-- ArXiv pre-print available at: http://arxiv.org/abs/0704.1467
dc.description.abstractWe calculate the surface phase diagram of a two-dimensional hard-rod fluid confined between two hard lines. In the first stage we study a semi-infinite system consisting of an isotropic fluid in contact with a single hard line. We have found complete wetting by the columnar phase at the wall-isotropic fluid interface. When the fluid is confined between two hard walls, capillary columnar ordering occurs via a first-order phase transition. For higher chemical potentials the system exhibits layering transitions even for very narrow slits (near the one-dimensional limit). The theoretical model used was a density-functional theory based on the fundamental-measure functional applied to a fluid of hard rectangles in the restricted-orientation approximation (Zwanzig model). The results presented here can be checked experimentally in two-dimensional granular media made of rods, where vertical motions induced by an external source and excluded volume interactions between the grains allow the system to explore those stationary states which entropically maximize packing configurations. We claim that some of the surface phenomena found here can be present in two-dimensional granular-media fluids.
dc.description.sponsorshipThe author gratefully acknowledges financial support from Ministerio de Educación y Ciencia under Grant No. BFM2003-0180 and Grant MOSAICO, and from Comunidad Autónoma de Madrid (Grant No. S-0505/ESP-0299) and UC3M/CAM (Spain) Grant No. UC3M-FI-05-007. The author was supported by a Ramón y Cajal research contract from the Ministerio de Educación y Ciencia.
dc.description.statusPublicado
dc.format.mimetypeapplication/pdf
dc.identifier.bibliographicCitationPhysical Review E 75, 051708 (2007)
dc.identifier.doi10.1103/PhysRevE.75.051708
dc.identifier.issn1539-3755
dc.identifier.urihttps://hdl.handle.net/10016/7001
dc.language.isoeng
dc.publisherThe American Physical Society
dc.relation.publisherversionhttp://dx.doi.org/10.1103/PhysRevE.75.051708
dc.rights© The American Physical Society
dc.rights.accessRightsopen access
dc.subject.ecienciaMatemáticas
dc.subject.other[PACS] Transitions in liquid crystals
dc.subject.other[PACS] Surface phenomena: alignment, anchoring, anchoring transitions, surface-induced layering, surface-induced ordering, wetting, prewetting transitions, and wetting transitions
dc.subject.other[PACS] Theory and models of liquid structure
dc.titleCapillary ordering and layering transitions in two-dimensional hard-rod fluids
dc.typeresearch article*
dc.type.reviewPeerReviewed
dspace.entity.typePublication
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