Microfluidic control over topological states in channel-confined nematic flows

S Čopar, Ž Kos, T Emeršič, U Tkalec - Nature communications, 2020 - nature.com
Compared to isotropic liquids, orientational order of nematic liquid crystals makes their
rheological properties more involved, and thus requires fine control of the flow parameters to …

[HTML][HTML] On the simulation of nematic liquid crystalline flows in a 4: 1 planar contraction using the Leslie–Ericksen and Beris–Edwards models

K Fedorowicz, R Prosser - Journal of Non-Newtonian Fluid Mechanics, 2022 - Elsevier
Extrusion is an essential element in the production of nematic soft solids, ensuring that the
final formulation is sufficiently refined and compacted. The interplay between complex …

Multiparticle collision dynamics for tensorial nematodynamics

S Mandal, MG Mazza - Physical Review E, 2019 - APS
Liquid crystals establish a nearly unique combination of thermodynamic, hydrodynamic, and
topological behavior. This poses a challenge to their theoretical understanding and …

[HTML][HTML] On the flow of liquid crystals through 90° bends

K Fedorowicz, R Prosser - Physics of Fluids, 2022 - pubs.aip.org
During the processing of nematic soft solids through process flow elements (pipe bends,
elbows, etc.), the constitutive behavior makes its presence felt via processing (with rheology …

Orientation behavior of nematic liquid crystals at flow-wall interfaces in microfluidic channels

A Bezrukov, Y Galyametdinov - Coatings, 2023 - mdpi.com
This work characterizes the orientation behavior of nematic liquid crystals in pressure-driven
flows of microfluidic channels at interfaces between the flow and microchannel walls. The …

Controllable particle migration in liquid crystal flows

M Lesniewska, N Mottram, O Henrich - Soft Matter, 2022 - pubs.rsc.org
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 …

[HTML][HTML] Surface anchoring mediates bifurcation in nematic microflows within cylindrical capillaries

P Steffen, E Stellamanns, A Sengupta - Physics of Fluids, 2021 - pubs.aip.org
Capillary microflows of liquid crystal phases are central to material, biological and bio-
inspired systems. Despite their fundamental and applied significance, a detailed …

On the effects of ericksen and deborah numbers on the flow in microfluidic capillaries

K Fedorowicz, R Prosser - Liquid Crystals, 2023 - Taylor & Francis
The use of nematics in microfluidic devices offers methods of flow control that are
inaccessible to isotropic fluids. While nematics have been used in channel flows found in lab …

Lock-key microfluidics: simulating nematic colloid advection along wavy-walled channels

K Wamsler, LC Head, TN Shendruk - Soft Matter, 2024 - pubs.rsc.org
Liquid crystalline media mediate interactions between suspended particles and confining
geometries, which not only has potential to guide patterning and bottom-up colloidal …

Sculpting liquid crystal skyrmions with external flows

RCV Coelho, H Zhao, M Tasinkevych, II Smalyukh… - Physical Review …, 2023 - APS
We investigate, using experiments and numerical simulations, the distortions and the
alignment of skyrmions in liquid crystal under external flows for a range of average flow …