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Mottram, N.J., McKay, G., Brown, C.V. 
ORCID: 0000-0002-1559-3238, Russell, C.T., Sage, I.C. and Tsakonas, C. ORCID: 0000-0002-7342-3405,
2016.
Flow-induced delayed Freedericksz transition.
Physical Review E, 93 (3), 030701(R).
ISSN 2470-0045
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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 Ec∝√ζ/Δχe on the shear rate ζ and on the electric susceptibility anisotropy Δχe.
| Item Type: | Journal article | ||||
|---|---|---|---|---|---|
| Publication Title: | Physical Review E | ||||
| Creators: | Mottram, N.J., McKay, G., Brown, C.V., Russell, C.T., Sage, I.C. and Tsakonas, C. | ||||
| Publisher: | American Physical Society | ||||
| Date: | 15 March 2016 | ||||
| Volume: | 93 | ||||
| Number: | 3 | ||||
| ISSN: | 2470-0045 | ||||
| Identifiers: |
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| Divisions: | Schools > School of Science and Technology | ||||
| Record created by: | Jonathan Gallacher | ||||
| Date Added: | 25 Jul 2016 09:30 | ||||
| Last Modified: | 04 Feb 2022 14:37 | ||||
| URI: | https://irep.ntu.ac.uk/id/eprint/28183 |
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