Controllable particle migration in liquid crystal flows.
Controllable particle migration in liquid crystal flows.
复制标题
液晶流中的可控粒子迁移。
DOI:
10.1039/d2sm00707j
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发表时间:
2022
期刊:
影响因子:
3.4
通讯作者:
Lesniewska M
中科院分区:
文献类型:
--
作者:
Lesniewska M
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.