@article { ISI:000309072200065,
	title = {Charge transport in functionalized multi-wall carbon nanotube-Nafion composite},
	journal = {Journal of Applied Physics},
	volume = {112},
	number = {5},
	year = {2012},
	month = {SEP},
	pages = {053706},
	publisher = {AMER INST PHYSICS},
	address = {CIRCULATION \& FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA},
	abstract = {<p>The charge transport in sulfonated multi-wall carbon nanotube (sMWNT)-Nafion composite is reported. The scanning electron microscope images of the composite, at 1 and 10 wt \% of sMWNT, show that the nanotubes are well dispersed in polymer matrix, with conductivity values of 0.005 and 3.2 S/cm, respectively; and the percolation threshold is nearly 0.42 wt. \%. The exponent (similar to 0.25) of the temperature dependence of conductivity in both samples indicates Mott{\textquoteright}s variable range hopping (VRH) transport. The conductance in 1 wt. \% sample increases by three orders of magnitude at high electric-fields, consistent with VRH model. The negative magnetoresistance in 10 wt. \% sample is attributed to the forward interference scattering mechanism in VRH transport. The ac conductance in 1 wt. \% sample is expressed by sigma(omega) proportional to omega(s), and the temperature dependence of s follows the correlated barrier hopping model. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4749264]</p>},
	issn = {0021-8979},
	doi = {10.1063/1.4749264},
	author = {Sangeeth, C. S. Suchand and Kannan, Ramaiyan and Pillai, Vijayamohanan K. and Menon, Reghu}
}
