Smith, A. A. T., Brown, C. V. and Mottram, N. J. (2007) Theoretical analysis of the magnetic Fréedericksz transition in the presence of flexoelectricity and ionic contamination. Physical Review E, 75(4), 041704. (doi: 10.1103/PhysRevE.75.041704)
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Abstract
We have derived an approximate analytical expression for the static director distortion of a planar nematic layer subject to a magnetic field H immediately above the critical Fréedericksz transition H=Hc. The layer contains a voltage-independent density of positively and negatively singly charged ionic species that interact with the flexoelectric and dielectric polarizations which appear when the director is distorted. The analytical solution is shown to correspond closely to a full numerical calculation when H∕Hc=1.01. The analytical approach allows a quantitative insight into how the mobile charge shields the polarization for different values of the elastic constants, the ionic density, the flexoelectric coefficients, and the layer thickness.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Mottram, Professor Nigel |
| Authors: | Smith, A. A. T., Brown, C. V., and Mottram, N. J. |
| College/School: | College of Science and Engineering > School of Mathematics and Statistics > Mathematics |
| Journal Name: | Physical Review E |
| Publisher: | American Physical Society |
| ISSN: | 2470-0045 |
| ISSN (Online): | 2470-0053 |
| Published Online: | 18 April 2007 |
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