Sculpting liquid crystal skyrmions with external flows

Coelho, R.C.V., Zhao, H., Tasinkevych, M. ORCID: 0000-0001-6689-1844, Smalyukh, I.I. and Telo da Gama, M.M., 2023. Sculpting liquid crystal skyrmions with external flows. Physical Review Research, 5: 033210. ISSN 2643-1564

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Abstract

We investigate, using experiments and numerical simulations, the distortions and the alignment of skyrmions in liquid crystal under external flows for a range of average flow velocities. The simulations are based on the Landau-de Gennes Q-tensor theory both for isolated as well as for systems with many skyrmions. We found striking flow-driven elongation of an isolated skyrmion and flow alignment of skyrmions in the many-skyrmion system, both of which are also observed in the experiments. In the simulations, particular attention was given to the dissipation rate and to the various dissipation channels for a single skyrmion under external flow. This analysis provides insight on the observed scaling regime of the elongation of isolated flowing skyrmions and revealed a surprising plastic response at very short times, which may be relevant in applications based on the alignment of soft structures such as liquid crystal skyrmions.

Item Type: Journal article
Publication Title: Physical Review Research
Creators: Coelho, R.C.V., Zhao, H., Tasinkevych, M., Smalyukh, I.I. and Telo da Gama, M.M.
Publisher: American Physical Society
Date: 25 September 2023
Volume: 5
ISSN: 2643-1564
Identifiers:
NumberType
10.1103/PhysRevResearch.5.033210DOI
1856071Other
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.
Divisions: Schools > School of Science and Technology
Record created by: Jonathan Gallacher
Date Added: 30 Jan 2024 09:02
Last Modified: 30 Jan 2024 09:02
URI: https://irep.ntu.ac.uk/id/eprint/50764

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