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How patchy can one get and still condense? The role of dissimilar patches in the interactions of colloidal particles

2009-02-01Journal article Restricted access
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dc.contributor.authorTavares, Jose
dc.contributor.authorTeixeira, Paulo
dc.contributor.authorGama, Margarida
dc.date.accessioned2014-06-18T15:07:38Z
dc.date.available2014-06-18T15:07:38Z
dc.date.issued2009-02-01
dc.description.abstractWe investigate the influence of strong directional, or bonding, interactions on the phase diagram of complex fluids, and in particular on the liquid-vapour critical point. To this end we revisit a simple model and theory for associating fluids which consist of spherical particles having a hard-core repulsion, complemented by three short-ranged attractive sites on the surface (sticky spots). Two of the spots are of type A and one is of type B; the interactions between each pair of spots have strengths [image omitted], [image omitted] and [image omitted]. The theory is applied over the whole range of bonding strengths and results are interpreted in terms of the equilibrium cluster structures of the coexisting phases. In systems where unlike sites do not interact (i.e. where [image omitted]), the critical point exists all the way to [image omitted]. By contrast, when [image omitted], there is no critical point below a certain finite value of [image omitted]. These somewhat surprising results are rationalised in terms of the different network structures of the two systems: two long AA chains are linked by one BB bond (X-junction) in the former case, and by one AB bond (Y-junction) in the latter. The vapour-liquid transition may then be viewed as the condensation of these junctions and we find that X-junctions condense for any attractive [image omitted] (i.e. for any fraction of BB bonds), whereas condensation of the Y-junctions requires that [image omitted] be above a finite threshold (i.e. there must be a finite fraction of AB bonds).por
dc.description.sponsorshipFundação para a Ciência e Tecnologia - Projetos: POCI/FIS/55592/2004 POCTI/ISFL/2/618por
dc.identifier.citationTAVARES. J. M.; TEIXEIRA, P.I.C.; GAMA, M. M. Telo da - How patchy can one get and still condense? The role of dissimilar patches in the interactions of colloidal particles. Molecular Physics: An International Journal at the Interface Between Chemistry and Physics. ISSN 0026-8976. Vol. 107, nr. 4-6 (2009), p. 453-466.por
dc.identifier.issn0026-8976
dc.identifier.other10.1080/00268970902852616
dc.identifier.urihttp://hdl.handle.net/10400.21/3638
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherTaylor & Francis Ltdpor
dc.relation.ispartofseries;PII 911461489
dc.relation.publisherversionhttp://www.tandfonline.com/doi/abs/10.1080/00268970902852616#.U6GqKoZJ6vwpor
dc.subjectPatchy colloidspor
dc.subjectPhase diagrampor
dc.subjectCritical pointpor
dc.titleHow patchy can one get and still condense? The role of dissimilar patches in the interactions of colloidal particlespor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceOxonpor
oaire.citation.endPage466por
oaire.citation.issue4-6por
oaire.citation.startPage453por
oaire.citation.titleMolecular Physics: An International Journal at the Interface Between Chemistry and Physicspor
oaire.citation.volume107por
person.familyNameTavares
person.familyNameTeixeira
person.familyNameTelo da Gama
person.givenNameJose
person.givenNamePaulo
person.givenNameMargarida Maria
person.identifierhttps://scholar.google.pt/citations?user=OrsjRkYAAAAJ&hl=pt-PT
person.identifier.ciencia-id371D-51C6-975C
person.identifier.ciencia-idB31A-0CBD-8AC4
person.identifier.ciencia-idB811-A73C-181F
person.identifier.orcid0000-0002-1509-9707
person.identifier.orcid0000-0003-2315-2261
person.identifier.ridA-2891-2009
person.identifier.ridA-2682-2009
person.identifier.scopus-author-id35621140500
person.identifier.scopus-author-id7005895098
person.identifier.scopus-author-id0000-0001-8849-9990
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication21fb8ec6-5b23-4df8-ba97-32256495d24d
relation.isAuthorOfPublication35a012c6-2e8b-402f-9b82-065843fce9aa
relation.isAuthorOfPublication4fde2efd-f48f-4419-b383-74945fb2db28
relation.isAuthorOfPublication.latestForDiscovery4fde2efd-f48f-4419-b383-74945fb2db28

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