Guilherme N. C. Amaral, Hanqing Zhao, Mahmoud Sedahmed, Tomás Campante, Ivan I. Smalyukh, Mykola Tasinkevych, Margarida M. Telo da Gama, Rodrigo C. V. Coelho
{"title":"类波伊塞尔流中的液晶环","authors":"Guilherme N. C. Amaral, Hanqing Zhao, Mahmoud Sedahmed, Tomás Campante, Ivan I. Smalyukh, Mykola Tasinkevych, Margarida M. Telo da Gama, Rodrigo C. V. Coelho","doi":"arxiv-2409.09486","DOIUrl":null,"url":null,"abstract":"Three-dimensional (3D) simulations of the structure of liquid crystal (LC)\ntorons, topologically protected distortions of the LC director field, under\nmaterial flows are rare but essential in microfluidic applications. Here, we\nshow that torons adopt a steady-state configuration at low flow velocity before\ndisintegrating at higher velocities, in line with experimental results.\nFurthermore, we show that under partial slip conditions at the boundaries, the\nflow induces a reversible elongation of the torons, also consistent with the\nexperimental observations. These results are in contrast with previous\nsimulation results for 2D skyrmions under similar flow conditions, highlighting\nthe need for a 3D description of this LC soliton in relation to its coupling to\nthe material flow. These findings pave the way for future studies of other\ntopological solitons, like hopfions and heliknotons, in flowing soft matter\nsystems.","PeriodicalId":501146,"journal":{"name":"arXiv - PHYS - Soft Condensed Matter","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Liquid crystal torons in Poiseuille-like flows\",\"authors\":\"Guilherme N. C. Amaral, Hanqing Zhao, Mahmoud Sedahmed, Tomás Campante, Ivan I. Smalyukh, Mykola Tasinkevych, Margarida M. Telo da Gama, Rodrigo C. V. Coelho\",\"doi\":\"arxiv-2409.09486\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Three-dimensional (3D) simulations of the structure of liquid crystal (LC)\\ntorons, topologically protected distortions of the LC director field, under\\nmaterial flows are rare but essential in microfluidic applications. Here, we\\nshow that torons adopt a steady-state configuration at low flow velocity before\\ndisintegrating at higher velocities, in line with experimental results.\\nFurthermore, we show that under partial slip conditions at the boundaries, the\\nflow induces a reversible elongation of the torons, also consistent with the\\nexperimental observations. These results are in contrast with previous\\nsimulation results for 2D skyrmions under similar flow conditions, highlighting\\nthe need for a 3D description of this LC soliton in relation to its coupling to\\nthe material flow. These findings pave the way for future studies of other\\ntopological solitons, like hopfions and heliknotons, in flowing soft matter\\nsystems.\",\"PeriodicalId\":501146,\"journal\":{\"name\":\"arXiv - PHYS - Soft Condensed Matter\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-09-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - PHYS - Soft Condensed Matter\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2409.09486\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - Soft Condensed Matter","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.09486","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Three-dimensional (3D) simulations of the structure of liquid crystal (LC)
torons, topologically protected distortions of the LC director field, under
material flows are rare but essential in microfluidic applications. Here, we
show that torons adopt a steady-state configuration at low flow velocity before
disintegrating at higher velocities, in line with experimental results.
Furthermore, we show that under partial slip conditions at the boundaries, the
flow induces a reversible elongation of the torons, also consistent with the
experimental observations. These results are in contrast with previous
simulation results for 2D skyrmions under similar flow conditions, highlighting
the need for a 3D description of this LC soliton in relation to its coupling to
the material flow. These findings pave the way for future studies of other
topological solitons, like hopfions and heliknotons, in flowing soft matter
systems.