A deuterium nuclear magnetic resonance investigation of field induced director dynamics in a nematic slab subject to magnetic and pulsed electric fields
Dunn, C. J., Luckhurst, G. R., Miyamoto, T., Naito, H., Sugimura, A. and Timimi, B. A. (2000) A deuterium nuclear magnetic resonance investigation of field induced director dynamics in a nematic slab subject to magnetic and pulsed electric fields. Molecular Crystals and Liquid Crystals, 347, 411-422.
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Description/Abstract
Deuterium nuclear magnetic resonance (NMR) spectroscopy has been used to investigate the field-induced director dynamics in a nematic liquid crystal, 4-pentyl-d(2)-4'-cyanobiphenyl (5CB-d(2)) deuteriated in the alpha -position of the pentyl chain, confined between two glass plates. The NMR spectra have been measured as a function of time after turning an electric field on and off It is demonstrated that the field-induced director dynamics in the nematic liquid crystal cells can be successfully time-resolved. In addition, it is found that the doubler NMR spectra become powder-like during the turn-on and rum-off processes. It is shown that the rotational viscosity and the diamagnetic anisotropy of 5CB-d(2) can be determined from the time-resolved NMR spectra by assuming uniform alignment of the director.
| Item Type: | Article |
|---|---|
| Related URLs: | |
| Keywords: | director dynamics, rotational viscosity, diamagnetic anisotropy, deuterium nuclear magnetic resonanceliquid-crystal, behavior, nmr |
| Subjects: | Q Science Q Science > QD Chemistry |
| Divisions: | University Structure - Pre August 2011 > School of Chemistry |
| Item ID: | 19042 |
| Date Deposited: | 18 Jan 2006 |
| Last Modified: | 01 Jun 2011 11:02 |
| Contributors: | Dunn, C. J. (Author) Luckhurst, G. R. (Author) Miyamoto, T. (Author) Naito, H. (Author) Sugimura, A. (Author) Timimi, B. A. (Author) |
| Date: | 2000 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/19042 |
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