Diffusive and Superdiffusive Motion of Sorbates in Carbon Nanotubes

Bhide, Shreyas Y and Ghosh, Debashree and Yashonath, S and Ananthakrishna, G (2004) Diffusive and Superdiffusive Motion of Sorbates in Carbon Nanotubes. [Preprint]

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Abstract

Molecular dynamics simulations of sorbates of different sizes confined to the interior of carbon nanotubes are reported. The mean squared displacement shows gradual change from diffusive for small sorbates to superdiffusive for intermediate sized-sorbates to ballistic for sizes comparable to the channel diameter. We show that this crossover behaviour can be understood on the basis of a gradual decrease of the x-y component of the force with the levitation parameter. The analysis can also help to rationalize some recently published results.

Item Type:	Preprint
Department/Centre:	Division of Chemical Sciences > Materials Research Centre Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	19 Apr 2006
Last Modified:	19 Sep 2010 04:25
URI:	http://eprints.iisc.ac.in/id/eprint/6361

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