Joshi, T. and Kumar, A. and Prakash, J. and Biradar, A. M. (2010) Low frequency dielectric relaxations of gold nanoparticles/ferroelectric liquid crystal composites. Liquid Crystals , 37 (11). pp. 1433-1438. ISSN 0267-8292

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Abstract

We present the characterisation and dielectric relaxation spectroscopy of a ferroelectric liquid crystal (FLC), namely KCFLC 7S. It was observed that the studied FLC material possesses the tendency of homeotropic alignment on glass substrates coated with indium tin oxide. A low frequency dielectric mode, along with the Goldstone mode, was observed in the SmC∗ phase of the FLC material. The low frequency mode became more dominant on doping gold nanoparticles into the FLC material. The occurrence of the low frequency mode was attributed to the ionisation–recombination-assisted diffusion of slow ions present in the FLC material. The behaviour of the relaxation frequency of the low frequency mode with applied dc bias and temperature was also demonstrated.

Item Type:	Article
Additional Information:	Copyright for this article belongs to Taylor & Francis Group.
Uncontrolled Keywords:	ferroelectric liquid crystal; low frequency relaxation; gold nanoparticles
Subjects:	Crystallography
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	31 May 2012 07:13
Last Modified:	31 May 2012 07:13
URI:	http://npl.csircentral.net/id/eprint/223

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