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Three-dimensional active defect loops

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Binysh, Jack, Kos, Žiga, Čopar, Simon, Ravnik, Miha and Alexander, Gareth P. (2020) Three-dimensional active defect loops. Physical Review Letters, 124 (8). 088001 . doi:10.1103/PhysRevLett.124.088001

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.124.088001

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Abstract

We describe the flows and morphological dynamics of topological defect lines and loops in three-dimensional active nematics and show, using theory and numerical modeling, that they are governed by the local profile of the orientational order surrounding the defects. Analyzing a continuous span of defect loop profiles, ranging from radial and tangential twist to wedge
±
1
/
2
profiles, we show that the distinct geometries can drive material flow perpendicular or along the local defect loop segment, whose variation around a closed loop can lead to net loop motion, elongation, or compression of shape, or buckling of the loops. We demonstrate a correlation between local curvature and the local orientational profile of the defect loop, indicating dynamic coupling between geometry and topology. To address the general formation of defect loops in three dimensions, we show their creation via bend instability from different initial elastic distortions.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Centre for Complexity Science
Faculty of Science > Mathematics
Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Condensed matter, Smart materials
Journal or Publication Title: Physical Review Letters
Publisher: American Physical Society
ISSN: 0031-9007
Official Date: 25 February 2020
Dates:
DateEvent
25 February 2020Published
UNSPECIFIEDAvailable
23 January 2020Accepted
Date of first compliant deposit: 5 March 2020
Volume: 124
Number: 8
Article Number: 088001
DOI: 10.1103/PhysRevLett.124.088001
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
UNSPECIFIEDUniversity of Warwick. Institute of Advanced Studyhttp://viaf.org/viaf/123145858003223022265
P1-0099Javna Agencija za Raziskovalno Dejavnost RShttp://dx.doi.org/10.13039/501100004329
J1-9149Javna Agencija za Raziskovalno Dejavnost RShttp://dx.doi.org/10.13039/501100004329
N1-0124Javna Agencija za Raziskovalno Dejavnost RShttp://dx.doi.org/10.13039/501100004329
L1-8135Javna Agencija za Raziskovalno Dejavnost RShttp://dx.doi.org/10.13039/501100004329
EP/R014604/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
CA17139European Topology Interdisciplinary Action UNSPECIFIED

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