Interplay between columnar and smectic stability in suspensions of polydisperse colloidal platelets

e-Archivo Repository

Show simple item record

dc.contributor.author Velasco, Enrique
dc.contributor.author Martínez-Ratón, Yuri
dc.date.accessioned 2020-03-05T10:41:09Z
dc.date.available 2020-03-05T10:41:09Z
dc.date.issued 2014-04-02
dc.identifier.bibliographicCitation FisEs'14: XIX Congreso de Física Estadística: libro de resúmenes: Ourense, 2-4 de Abril de 2014, p. 82.
dc.identifier.uri http://hdl.handle.net/10016/29839
dc.description [Póster presentado a]: FisEs'14: XIX Congreso de Física Estadística: libro de resúmenes: Ourense, 2-4 de Abril de 2014
dc.description.abstract The phase behavior of a model suspension of colloidal polydisperse platelets is studied using density-functional theory. Platelets are modelled as parallel rectangular prisms of square section l(2) and height h, with length and height distributions given by different polydispersities delta(l) and delta(h). The model is intended to qualitatively represent experimental colloidal platelet suspensions at high densities with a high degree of orientational ordering. We obtain the phase behavior of the model, including nematic, smectic and columnar phases and its dependence on the two polydispersities delta(l) and delta(h). When delta(l) >; delta(h) we observe that the smectic phase stabilises first with respect to the columnar. If delta(h) >; delta(l) we observe the opposite behavior. Other more complicated cases occur, e. g. the smectic stabilises from the nematic first but then exists a first-order transition to the columnar phase. Our model assumes plate-rod symmetry, but the regions of stability of smectic and columnar phases are non-symmetric in the delta(l) - delta(h) plane due to the different dimensionality of ordering in the two phases. Microsegregation effects, i.e. different spatial distribution for different sizes within the periodic cell, take place in both phases and, in each case, is more apparent in the variable associated with ordering.
dc.format.extent 1
dc.language.iso eng
dc.publisher
dc.subject.other Colloidal polydisperse platelets
dc.subject.other Colloidal suspensions
dc.subject.other Mineral anisotropic particles
dc.title Interplay between columnar and smectic stability in suspensions of polydisperse colloidal platelets
dc.type conferenceObject
dc.relation.publisherversion https://www.gefenol.es/FisEs/14/media/uploads/utilidades/libro_abstracts_fises_14-provisional.pdf
dc.subject.eciencia Materiales
dc.rights.accessRights openAccess
dc.type.version publishedVersion
dc.relation.eventdate 2-4 abril, 2014
dc.relation.eventplace Ourense, España
dc.relation.eventtitle FisEs'14: XIX Congreso de Física Estadística
dc.relation.eventtype poster
dc.identifier.publicationfirstpage 82
dc.identifier.publicationlastpage 82
dc.identifier.publicationtitle FisEs'14: XIX Congreso de Física Estadística: libro de resúmenes: Ourense, 2-4 de Abril de 2014
dc.identifier.uxxi CC/0000022765
 Find Full text

Files in this item

*Click on file's image for preview. (Embargoed files's preview is not supported)


This item appears in the following Collection(s)

Show simple item record