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Defects in vertically vibrated monolayers of cylinders

Title data

González-Pinto, Miguel ; Renner, Johannes ; de las Heras, Daniel ; Martínez-Ratón, Yuri ; Velasco, Enrique:
Defects in vertically vibrated monolayers of cylinders.
In: New Journal of Physics. Vol. 21 (15 March 2019) Issue 3 .
ISSN 1367-2630
DOI: https://doi.org/10.1088/1367-2630/ab060b

Official URL: Volltext

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Abstract in another language

We analyse liquid-crystalline ordering in vertically vibrated monolayers of cylinders confined in a circular cavity. Short cylinders form tetratic arrangements with C4 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.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics II > Chair Theoretical Physics II - Univ.-Prof. Dr. Matthias Schmidt
Profile Fields > Advanced Fields > Polymer and Colloid Science
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics II
Profile Fields
Profile Fields > Advanced Fields
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 28 Mar 2020 22:00
Last Modified: 30 Mar 2020 08:30
URI: https://eref.uni-bayreuth.de/id/eprint/54730