Title:	Magnetic field dependence of the hexagonal to isotropic transition temperature of a single-walled carbon nanotubes dispersed lyotropic liquid crystal
Authors:	Vijayaraghavan, D. Mishra, Jai Thejas, R.
Keywords:	Magnetic field phase transition lyotropic liquid crystal carbon nanotube
Issue Date:	3-Jul-2019
Publisher:	Taylor & Francis
Citation:	Phase Transitions, 2019, Vol. 92, p 634
Abstract:	We have carried out electrical conductivity studies on a single-walled carbon nanotubes dispersed lyotropic liquid crystal consisting of 50 wt.% TX-100 in water as a function of magnetic field and temperature. This system exhibits hexagonal and isotropic phases on heating. For all the applied magnetic fields, the temperature dependence of electrical conductivity of the carbon nanotubes dispersed lyotropic liquid crystal system exhibits a discontinuous change at the hexagonal to isotropic transition temperature. We find that the magnetic field dependence of the hexagonal to isotropic transition temperature is similar to that of the viscosity of the system. Using photo images of the sample, we find that the carbon nanotubes in the lyotropic liquid crystal form magnetic field dependent aggregates. We find spherical, rod and hook-like nanotube aggregates for low and high applied magnetic fields respectively. These nanotube aggregates alter the viscosity of our system which in turn alters the transition temperatures.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/7243
ISSN:	0141-1594 1029-0338 (Online )
Alternative Location:	https://doi.org/10.1080/01411594.2019.1625356
Copyright:	2019, Taylor & Francis
Appears in Collections:	Research Papers (SCM)

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