Publication:
Lattice density functional for colloid-polymer mixtures: Comparison of two fundamental measure theories

Simple item page
dc.affiliation.dptoUC3M. Departamento de Matemáticases
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Interdisciplinar de Sistemas Complejos (GISC)es
dc.contributor.authorCuesta, José A.
dc.contributor.authorLafuente, Luis
dc.contributor.authorSchmidt, Matthias
dc.date.accessioned2010-03-12T13:16:16Z
dc.date.available2010-03-12T13:16:16Z
dc.date.issued2005-09
dc.description9 pages, 3 figures.-- PACS nrs.: 82.70.Dd, 61.20.Gy, 64.75.+g.-- ArXiv pre-print available at: http://arxiv.org/abs/cond-mat/0504426 under title "Lattice density functional for colloid-polymer mixtures: Multi-occupancy versus Highlander version".
dc.descriptionFinal publisher version available Open Access at: http://gisc.uc3m.es/~cuesta/papers-year.html
dc.description.abstractWe consider a binary mixture of colloid and polymer particles with positions on a simple cubic lattice. Colloids exclude both colloids and polymers from nearest neighbor sites. Polymers are treated as effective particles that are mutually noninteracting, but exclude colloids from neighboring sites; this is a discrete version of the (continuum) Asakura-Oosawa-Vrij model. Two alternative density functionals are proposed and compared in detail. The first is based on multioccupancy in the zero-dimensional limit of the bare model, analogous to the corresponding continuum theory that reproduces the bulk fluid free energy of free volume theory. The second is based on mapping the polymers onto a multicomponent mixture of polymer clusters that are shown to behave as hard cores; the corresponding property of the extended model in strong confinement permits direct treatment with lattice fundamental measure theory. Both theories predict the same topology for the phase diagram with a continuous fluid-fcc freezing transition at low polymer fugacity and, upon crossing a tricritical point, a first-order freezing transition for high polymer fugacities with rapidly broadening density jump.
dc.description.sponsorshipThis work is supported by Project No. BFM2003-0180 of the Dirección General de Investigación (Ministerio de Ciencia y Tecnología, Spain) and the SFB-TR6 “Colloidal dispersions in external fields” of the German Science Foundation (Deutsche Forschungsgemeinschaft).
dc.description.statusPublicado
dc.format.mimetypeapplication/pdf
dc.identifier.bibliographicCitationPhysical Review E 72, 031405 (2005)
dc.identifier.doi10.1103/PhysRevE.72.031405
dc.identifier.issn1539-3755
dc.identifier.urihttps://hdl.handle.net/10016/7306
dc.language.isoeng
dc.publisherThe American Physical Society
dc.relation.publisherversionhttp://dx.doi.org/10.1103/PhysRevE.72.031405
dc.rights© The American Physical Society
dc.rights.accessRightsopen access
dc.subject.ecienciaMatemáticas
dc.subject.other[PACS] Colloids
dc.subject.other[PACS] Theory and models of liquid structure
dc.subject.other[PACS] Phase equilibria
dc.titleLattice density functional for colloid-polymer mixtures: Comparison of two fundamental measure theories
dc.typeresearch article*
dc.type.reviewPeerReviewed
dspace.entity.typePublication
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
lattice_cuesta_pre_2005_pp.pdf
Size:
151.95 KB
Format:
Adobe Portable Document Format
Description:
preprint version
Download
Collections
DM - GISC - Artículos de Revistas