Mottram, N.J. , McKay, G., Brown, C.V., Russell, C.T., Sage, I.C. and Tsakonas, C. (2016) Flow-induced delayed Freedericksz transition. Physical Review E, 93(3), 030701(R). (doi: 10.1103/PhysRevE.93.030701)
|
Text
213496.pdf - Published Version Available under License Creative Commons Attribution. 260kB |
Abstract
We demonstrate that a compact manometer experiment allows direct observation of a delay to the classical electric-field-induced Freedericksz transition produced by flow in a highly dispersive nematic liquid crystal layer. The Ericksen-Leslie equations are used to show that a flow aligning torque generated in the nematic layer under Poiseuille flow competes with the orthogonal electric-field reorientation torque. This model fully reproduces the experimental results using only self-consistently determined viscosity values, and predicts a more generally applicable expression for the dependence of the delay E c ∝ √ ζ / Δ χ e on the shear rate ζ and on the electric susceptibility anisotropy Δ χ e .
Item Type: | Articles |
---|---|
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Mottram, Professor Nigel |
Authors: | Mottram, N.J., McKay, G., Brown, C.V., Russell, C.T., Sage, I.C., and Tsakonas, C. |
College/School: | College of Science and Engineering > School of Mathematics and Statistics > Mathematics |
Journal Name: | Physical Review E |
Publisher: | American Physical Society |
ISSN: | 1539-3755 |
ISSN (Online): | 1550-2376 |
Published Online: | 15 March 2016 |
Copyright Holders: | Copyright © 2016 American Physical Society |
First Published: | First published in Physical Review E 93(3): 030701(R) |
Publisher Policy: | Reproduced under a Creative Commons License |
University Staff: Request a correction | Enlighten Editors: Update this record