Phase diagrams of Zwanzig models: The effect of polydispersity

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dc.contributor.author Martínez-Ratón, Yuri
dc.contributor.author Cuesta, José A.
dc.date.accessioned 2010-02-25T11:26:26Z
dc.date.available 2010-02-25T11:26:26Z
dc.date.issued 2003-06-08
dc.identifier.bibliographicCitation Journal of Chemical Physics, 2003, vol. 118, n. 22, p. 10164-10173
dc.identifier.issn 0021-9606 (Print)
dc.identifier.issn 1089-7690 (Online)
dc.identifier.uri http://hdl.handle.net/10016/7029
dc.description 10 pages, 8 figures.-- PACS nrs.: 61.30-v, 64.60.-i, 64.70.-p, 65.20.+w.-- ArXiv pre-print available at: http://arxiv.org/abs/cond-mat/0302446
dc.description Final publisher version available Open Access at: http://gisc.uc3m.es/~cuesta/papers-year.html
dc.description.abstract The first goal of this article is to study the validity of the Zwanzig model for liquid crystals to predict transitions to inhomogeneous phases (like smectic and columnar) and the way polydispersity affects these transitions. The second goal is to analyze the extension of the Zwanzig model to a binary mixture of rods and plates. The mixture is symmetric in that all particles have equal volume and length-to-breadth ratio, Κ. The phase diagram containing the homogeneous phases as well as the spinodals of the transitions to inhomogeneous phases is determined for the cases K=5 and 15 in order to compare with previous results obtained in the Onsager approximation. We then study the effect of polydispersity on these phase diagrams, emphasizing the enhancement of the stability of the biaxial nematic phase it induces.
dc.description.sponsorship This work is part of the research Project No. BFM2000-0004 (DIGI) of the Ministerio de Ciencia y Tecnología (Spain). Y.M-R. is supported by a postdoctoral grant of the Consejería de Educación de la Comunidad de Madrid.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher American Institute of Physics
dc.rights © American Institute of Physics
dc.subject.other Liquid crystals
dc.subject.other Phase diagrams
dc.subject.other Free energy
dc.subject.other Phase separation
dc.subject.other Disperse systems
dc.title Phase diagrams of Zwanzig models: The effect of polydispersity
dc.type article
dc.type.review PeerReviewed
dc.description.status Publicado
dc.relation.publisherversion http://dx.doi.org/10.1063/1.1571055
dc.subject.eciencia Matemáticas
dc.identifier.doi 10.1063/1.1571055
dc.rights.accessRights openAccess
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