Defects in vertically vibrated monolayers of cylinders
Entity
UAM. Departamento de Física Teórica de la Materia CondensadaPublisher
IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische GesellschaftDate
2019-03-15Citation
10.1088/1367-2630/ab060b
New Journal of Physics 21.3 (2019): 033002
ISSN
1367-2630DOI
10.1088/1367-2630/ab060bFunded by
Financial support under grants FIS2015-66523-P and FIS2017-86007-C3-1-P from Ministerio de Economía, Industria y Competitividad (MINECO) of Spain is acknowledged. This publication was funded by the German Research Foundation (DFG) and the University of Bayreuth in the funding programme Open Access PublishingProject
Gobierno de España. FIS2015-66523-P; Gobierno de España. FIS2017-86007-C3-1-PEditor's Version
https://doi.org/10.1088/1367-2630/ab060bSubjects
Confined liquid crystals; Topological defects; Dissipative systems; Granular monolayers; Tetratic; FísicaRights
© 2019 The Author(s).Abstract
We analyse liquid-crystalline ordering in vertically vibrated monolayers of cylinders confined in a circular cavity. Short cylinders form tetratic arrangements with C 4 symmetry. This symmetry, which is incompatible with the geometry of the cavity, is restored by the presence of four point defects with total topological charge +4. Equilibrium Monte Carlo simulations predict the same structure. A new method to measure the elastic properties of the tetratic medium is developed which exploits the clear similarities between the vibrated dissipative system and the thermal equilibrium system. Our observations open up a new avenue to investigate the formation of defects in response to boundary conditions, an issue which is very difficult to realise in colloidal or molecular systems
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Google Scholar:González-Pinto, Miguel
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Renner, Johannes
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De Las Heras, Daniel
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Martinez-Ratón, Yuri
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Velasco Caravaca, Enrique
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