Ionic contribution to the dielectric properties of a nematic liquid crystal in thin cells
| dc.contributor.author | Dhara, Surajit | |
| dc.contributor.author | Madhusudana, N.V. | |
| dc.date.accessioned | 2006-05-16T11:18:37Z | |
| dc.date.available | 2006-05-16T11:18:37Z | |
| dc.date.issued | 2001-10-01 | |
| dc.description.abstract | We report measurements on dielectric properties of a nematic liquid crystal in planar aligned cells with two different thicknesses (1.2 and 6.7 µm). The nematic has a wide thermal range and the temperature variation of the effective dielectric constant (epsilon[perpendicular]) of the thick cell reflects that of the orientational order parameter. On the other hand, the thin cell exhibits a higher value of epsilon[perpendicular] which is essentially temperature independent. We have conducted detailed dielectric measurements in the frequency range of 10 Hz–1.1 kHz on both the cells and analyzed the data using a simplified model which takes into account the ionic contribution. It leads to an estimation of the temperature dependencies of the number density and diffusion coefficient of the impurity ions. | en |
| dc.format.extent | 94367 bytes | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.citation | Journal of Applied Physics, 2001, Vol.90, p3483-3488 | en |
| dc.identifier.issn | 0021-8979 | |
| dc.identifier.uri | http://hdl.handle.net/2289/1268 | |
| dc.language.iso | en | en |
| dc.publisher | The American Institute of Physics | en |
| dc.relation.uri | http://link.aip.org/link/?jap/90/3483 | en |
| dc.rights | (2001) by the American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. | en |
| dc.title | Ionic contribution to the dielectric properties of a nematic liquid crystal in thin cells | en |
| dc.type | Article | en |