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Title: Investigation of shear-driven and pressure-driven liquid crystal flow at microscale : a quantitative approach for the flow measurement
Authors: Zhu, Jianqin
Tang, Runze
Chen, Yu
Yin, Shuai
Huang, Yi
Wong, Teckneng
Keywords: Engineering::Mechanical engineering
Issue Date: 2020
Source: Zhu, J., Tang, R., Chen, Y., Yin, S., Huang, Y., & Wong, T. (2020). Investigation of Shear-Driven and Pressure-Driven Liquid Crystal Flow at Microscale: A Quantitative Approach for the Flow Measurement. Micromachines, 12(1), 28-. doi:10.3390/mi12010028
Project: RG 94/16
RG 98/18
Journal: Micromachines
Abstract: The liquid crystal-based method is a new technology developed for flow visualizations and measurements at microscale with great potentials. It is the priority to study the flow characteristics before implementation of such a technology. A numerical analysis has been applied to solve the simplified dimensionless two-dimensional Leslie-Ericksen liquid crystal dynamic equation. This allows us to analyze the coupling effect of the LC's director orientation and flow field. We will be discussing two classic shear flow cases at microscale, namely Couette and Poiseuille flow. In both cases, the plate drag speed in the state of Couette flow are varied as well as the pressure gradients in Poiseuille flow state are changed to study their effects on the flow field distributions. In Poiseuille flow, with the increase of applied pressure gradient, the influence of backflow significantly affects the flow field. Results show that the proposed method has great advantages on measurement near the wall boundaries which could complement to the current adopted flow measurement technique. The mathematical model proposed in this article could be of great potentials in the development of the quantitatively flow measurement technology.
ISSN: 2072-666X
DOI: 10.3390/mi12010028
Rights: © 2020 The Authors. Li-censee MDPI, Basel, Switzerland.This article is an open access article distributed under the terms and conditions of the Creative Commons At-tribution (CC BY) license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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