Controllable particle migration in liquid crystal flows

Lesniewska, Magdalena and Mottram, Nigel and Henrich, Oliver (2022) Controllable particle migration in liquid crystal flows. Soft Matter, 18 (36). pp. 6942-6953. ISSN 1744-6848 (https://doi.org/10.1039/D2SM00707J)

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Abstract

We observe novel positional control of a colloidal particle in microchannel flow of a nematic liquid crystal. Lattice Boltzmann simulations show multiple equilibrium particle positions, the existence and position of which are tunable using the driving pressure, in direct contrast to the classical Segré-Silberberg effect in isotropic liquids. In addition, particle migration in nematic flow occurs an order of magnitude faster. These new equilibria are determined through a balance of elastic forces, hydrodynamic lift and drag as well as order-flow interactions through the defect structure around the particle.

ORCID iDs

Lesniewska, Magdalena, Mottram, Nigel and Henrich, Oliver ORCID logoORCID: https://orcid.org/0000-0003-0384-982X;
  • Item type:Article
    ID code:82105
    Dates:
    Date
    Event
    28 September 2022
    Published
    26 August 2022
    Published Online
    24 August 2022
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:29 Aug 2022 11:38
    Last modified:11 Nov 2024 13:36
    URI:https://strathprints.strath.ac.uk/id/eprint/82105
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