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Condensed Matter > Soft Condensed Matter
Title: Sculpting liquid crystal skyrmions with external flows
(Submitted on 21 Mar 2023)
Abstract: We investigate, using experiments and numerical simulations, the distortions and the alignment of skyrmions in the 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.
Submission history
From: Rodrigo Coelho C. V. [view email][v1] Tue, 21 Mar 2023 17:30:11 GMT (22554kb,D)
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