Defect-influenced particle advection in highly confined liquid crystal flows

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Abstract

We study the morphology of the Saturn ring defect and director structure around a colloidal particle with normal anchoring conditions and within the flow of the nematic host phase through a rectangular duct of comparable size to the particle. The changes in the defect structures and director profile influence the advection behaviour of the particle, which we compare to that in a simple Newtonian host phase. These effects lead to a non-monotonous dependence of the differential velocity of particle and fluid, also known as retardation ratio, on the Ericksen number.
Original languageEnglish
Pages2218-2231
Number of pages14
Volume20
No.10
Specialist publicationSoft Matter
DOIs
Publication statusPublished - 14 Mar 2024

Keywords

  • Saturn ring defect
  • director structure
  • colloidal particle
  • retardation ratio
  • Ericksen number

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