Domain walls in vertically vibrated monolayers of cylinders confined in annuli

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Show simple item record Díaz-De Armas, Ariel Maza Cuello, Martín Martínez-Ratón, Yuri Velasco Caravaca, Enrique 2020-09-30T08:36:05Z 2020-09-30T08:36:05Z 2020-09-17
dc.identifier.bibliographicCitation Physical Review Research, (2020), 2(3), 033436, pp.: 1-11.
dc.identifier.issn 2643-1564
dc.description.abstract Liquid-crystalline ordering in vertically vibrated granular monolayers confined in annuli of different sizes is examined. The annuli consist of circular cavities with a central circular obstruction. In the absence of the central obstruction cylinders of low aspect-ratio exhibit tetratic order, except for the existence of four defects which restore the symmetry broken by the circular confinement. This behaviour is demanded by topology in systems with strong anchoring properties at the surface. By contrast, topology dictates that the annular geometry is compatible with a distorted tetratic phase without point defects. However, the effect of restricted geometry and limited size on phases possessing finite anchoring energy at the wall and elastic stiffness leads to different configurations, showing finite ordered regions separated by domain walls. We argue that highly packed nonequilibrium vibrated granular monolayers respond to geometrical frustration and extreme confinement as corresponding equilibrium systems of particles do, and that the former can be analysed in terms of surface free energies, elastic distortions and defects, much as equilibrium liquid crystals. Therefore, selective confinement of vertically-vibrated monolayers of rods could be used with advantage as a new tool to study the creation and dynamics of various types of defects in ordered systems.
dc.description.sponsorship Financial support under Grants No. FIS2017-86007-C3-1-P from Ministerio de Economía, Industria y Competitividad (MINECO) of Spain and No. PGC2018-096606-B-I00 from Agencia Estatal de Investigación-Ministerio de Ciencia e Innovación of Spain are acknowledged.
dc.format.extent 11
dc.language.iso eng
dc.publisher American Physical Society
dc.rights Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.subject.other Liquid crystals
dc.subject.other Topological defects
dc.title Domain walls in vertically vibrated monolayers of cylinders confined in annuli
dc.type article
dc.description.status Publicado
dc.subject.eciencia Matemáticas
dc.subject.eciencia Materiales
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. PGC2018-096606-B-I00
dc.relation.projectID Gobierno de España. FIS2017-86007-C3-1-P
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue 3(033436)
dc.identifier.publicationlastpage 11
dc.identifier.publicationtitle Physical Review Research
dc.identifier.publicationvolume 2
dc.identifier.uxxi AR/0000026010
dc.contributor.funder Ministerio de Economía y Competitividad (España)
dc.affiliation.dpto UC3M. Departamento de Matemáticas
dc.affiliation.grupoinv UC3M. Grupo de Investigación: Interdisciplinar de Sistemas Complejos (GISC)
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