Title:	Effect of metallic silver nanoparticles on the alignment and relaxation behaviour of liquid crystalline material in smectic C* phase
Authors:	Vimal, Tripti Gupta, Swadesh Kumar Katiyar, Rohit Srivastava, Atul Czerwinski, Michal Krup, Katarzyna Kumar, Sandeep Manohar, Rajiv
Keywords:	12 months embargo
Issue Date:	Sep-2017
Publisher:	American Institute of Physics
Citation:	Journal of Applied Physics, 2017, Vol. 122, p114102
Abstract:	The influence of silver nanoparticles dispersed in a Ferroelectric Liquid Crystal (FLC) on the properties of the resultant composite system has been investigated by thermal, electro–optical, and dielectric methods. We show that the concentration of thiol capped silver nanoparticles is a critical factor in governing the alignment of nanoparticles (NPs) in the host FLC. The orientation of NPs in composite samples affects the ordering of the LC (Liquid Crystal) phase and consequently changes the various phase transition temperatures of the host LC. Formation of self-assembled 2D (two dimensional) arrays of nanoparticles is observed for high concentration of dopant in the LC, oriented perpendicular to the direction of rubbing. We propose that the molecular interaction between the thiol capped NPs and LC molecules is the key factor behind such an arrangement of NPs. Orientation of NPs has affected the relaxation behaviour and various other material parameters, significantly. A noteworthy change in DC conductivity articulates our proposed idea of the formation of 2D array of NPs perpendicular to the direction of rubbing. This comprehensive study endorses the importance of dopant concentration in modifying the properties of the host LC material.
Description:	Open Access
URI:	http://hdl.handle.net/2289/6815
ISSN:	0021-8979 1089-7550(Online)
Alternative Location:	http://dx.doi.org/10.1063/1.5003247
Copyright:	2017 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.
Appears in Collections:	Research Papers (SCM)

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