Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/127819
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dc.contributor.authorPagès, Josep M.-
dc.contributor.authorStraube, Arthur V.-
dc.contributor.authorTierno, Pietro-
dc.contributor.authorIgnés i Mullol, Jordi-
dc.contributor.authorSagués i Mestre, Francesc-
dc.date.accessioned2019-02-01T14:37:45Z-
dc.date.issued2018-12-07-
dc.identifier.issn1744-683X-
dc.identifier.urihttp://hdl.handle.net/2445/127819-
dc.description.abstractWe present a quantitative analysis of the nonequilibrium assembly of colloidal particles dispersed in a nematic liquid crystal. The driven particles assemble into reconfigurable circular clusters by liquid-crystal-enabled electrokinetic phenomena generated by an AC electric field that provides propulsion along the local director. We identify the coexistence of different aggregation states, including a central, jammed core, where short-range elastic attraction dominates, surrounded by a liquid-like corona where particles retain their mobility but reach a mechanical equilibrium that we rationalize in terms of a balance between centripetal phoretic drive and pairwise repulsion. An analysis of the compressible liquid-like region reveals a linear density profile that can be tuned with the field frequency, and a bond-orientational order that reaches a maximum at intermediate packing densities, where elastic effects are minimized. Since the phoretic propulsion force acts also on assembled particles, we compute the mechanical pressure and show that a hard-disk equation of state can be used to describe the assembly of this driven system.-
dc.format.extent9 p.-
dc.format.mimetypeapplication/pdf-
dc.language.isoeng-
dc.publisherRoyal Society of Chemistry-
dc.relation.isformatofVersió postprint del document publicat a: https://doi.org/10.1039/C8SM02101E-
dc.relation.ispartofSoft Matter, 2018, vol. 15, p. 312-320-
dc.relation.urihttps://doi.org/10.1039/C8SM02101E-
dc.rights(c) Pagès, Josep M. et al., 2018-
dc.subject.classificationCol·loides-
dc.subject.classificationCristalls líquids-
dc.subject.otherColloids-
dc.subject.otherLiquid crystals-
dc.titleInhomogeneous assembly of driven nematic colloids-
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/acceptedVersion-
dc.identifier.idgrec684263-
dc.date.updated2019-02-01T14:37:45Z-
dc.rights.accessRightsinfo:eu-repo/semantics/embargoedAccess-
dc.embargo.lift2019-12-07-
dc.date.embargoEndDateinfo:eu-repo/date/embargoEnd/2019-12-07-
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)

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