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Updated: Mar 15, 2026
06:24
High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
Published on: October 31, 2019
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Electro-osmosis in nematic liquid crystals
O M Tovkach1,2, M Carme Calderer3, Dmitry Golovaty1
1Department of Mathematics, The University of Akron, Akron, Ohio 44325, USA.
Physical Review. E
|August 31, 2016
Summary
We developed a mathematical model for nematic electrolytes, validating it against experiments showing liquid crystal electrokinetics. The model explains how surface patterns create electro-osmotic flows in liquid crystals.
Area of Science:
- Physics
- Materials Science
- Chemical Engineering
Background:
- Nematic electrolytes exhibit complex electrokinetic phenomena.
- Surface-patterned anchoring conditions influence liquid crystal behavior.
- Previous models did not fully incorporate dielectric anisotropy and nematic viscosities.
Purpose of the Study:
- To derive a comprehensive mathematical model for nematic electrolytes.
- To validate the model using experimental data on substrate-controlled electrokinetics.
- To extend understanding of liquid crystal-enabled electrokinetic flows.
Main Methods:
- Variational formulation of nematodynamics.
- Mathematical modeling of nematic liquid crystals.
- Comparison of model predictions with experimental results.
Main Results:
- A validated mathematical model for nematic electrolytes was derived.
- The model accurately predicts electro-osmotic flows in patterned liquid crystal cells.
- The model incorporates dielectric anisotropy and full nematic viscosities.
Conclusions:
- The derived model provides a robust framework for understanding nematic electrolyte electrokinetics.
- The study elucidates the role of surface patterning and material properties in generating directed flows.
- This work advances the predictive capability for liquid crystal-based microfluidic devices.
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