Structural and Dynamical Behaviour of Colloids with Competing Interactions Confined in Slit Pores

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dc.contributor.authorSerna, Horacio
dc.contributor.authorGóźdź, Wojciech
dc.contributor.authorNoya, Eva González
dc.contributor.organizationInstitute of Physical Chemistry, Polish Academy of Sciencesen
dc.contributor.organizationInstituto de Química Física Rocasolano, CSIC, Madrid, Spainen
dc.date.accessioned2022-03-03T10:44:27Z
dc.date.available2022-03-03T10:44:27Z
dc.date.issued2021
dc.description.abstractSystems with short-range attractive and long-range repulsive interactions can form periodic modulated phases at low temperatures, such as cluster-crystal, hexagonal, lamellar and bicontinuous gyroid phases. These periodic microphases should be stable regardless of the physical origin of the interactions. However, they have not yet been experimentally observed in colloidal systems, where, in principle, the interactions can be tuned by modifying the colloidal solution. Our goal is to investigate whether the formation of some of these periodic microphases can be promoted by confinement in narrow slit pores. By performing simulations of a simple model with competing interactions, we find that both the cluster-crystal and lamellar phases can be stable up to higher temperatures than in the bulk system, whereas the hexagonal phase is destabilised at temperatures somewhat lower than in bulk. Besides, we observed that the internal ordering of the lamellar phase can be modified by changing the pore width. Interestingly, for sufficiently wide pores to host three lamellae, there is a range of temperatures for which the two lamellae close to the walls are internally ordered, whereas the one at the centre of the pore remains internally disordered. We also find that particle diffusion under confinement exhibits a complex dependence with the pore width and with the density, obtaining larger and smaller values of the diffusion coefficient than in the corresponding bulk system.en
dc.identifier.citationSerna H, Góźdź WT, Noya EG. Structural and Dynamical Behaviour of Colloids with Competing Interactions Confined in Slit Pores. International Journal of Molecular Sciences. 2021; 22(20):11050. https://doi.org/10.3390/ijms222011050en
dc.identifier.doi10.3390/ijms222011050
dc.identifier.issn1422-0067
dc.identifier.urihttps://open.icm.edu.pl/handle/123456789/21100
dc.language.isoen
dc.publisherMDPIen
dc.rightsUznanie autorstwa 4.0 Międzynarodowe*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectcolloids with competing interactionsen
dc.subjectperiodic microphasesen
dc.subjectconfinementen
dc.titleStructural and Dynamical Behaviour of Colloids with Competing Interactions Confined in Slit Porespl
dc.typearticleen
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