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ISRN Nanomaterials
Volume 2012 (2012), Article ID 596125, 5 pages
http://dx.doi.org/10.5402/2012/596125
Research Article

Electrical Parameters of Different Concentrations of Methyl Red in Fullerene Doped Liquid Crystal

1Department of Physics, Yildiz Technical University, 34210 Istanbul, Turkey
2Department of Physics, Düzce University, 81620 Düzce, Turkey
3Department of Physics, Gebze Institute of Technology, Kocaeli, 41400 Gebze, Turkey
4Yeşilyurt Demir Çelik Vocational School, Ondokuz Mayıs University, 55330 Samsun, Turkey

Received 25 June 2012; Accepted 1 August 2012

Academic Editors: J. Bai and S. Bedanta

Copyright © 2012 M. Okutan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Dielectric anisotropy and relaxation time of a liquid crystal (LC) system, containing fullerene and methyl red (MR) dye, were studied via impedance spectroscopy technique under a bias voltage. Dye concentration is tried to be 0.1%, 0.5%, and 1% in host nematic liquid crystal coded E7. Dielectric permittivity and dielectric anisotropy values of the samples were investigated between the frequency ranges of 100–10 MHz. It is seen that dielectric anisotropy is strongly affected by doping ratio and this value decreases with increasing dye. Also, relaxation time τ and critical frequency values were calculated depending on voltage of different dye ratios.