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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
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
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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 | ||||||||||||||||||||||||
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| Subjects: | Q Science > QC Physics | ||||||||||||||||||||||||
| Divisions: | Faculty of Science > Centre for Complexity Science Faculty of Science > Mathematics Faculty of Science > Physics |
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| 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 | ||||||||||||||||||||||||
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| 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 | ||||||||||||||||||||||||
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