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Journal of Nanotechnology
Volume 2013 (2013), Article ID 639068, 5 pages
http://dx.doi.org/10.1155/2013/639068
Research Article

Analysis of Equation of State for Carbon Nanotubes

1Department of Physics, National Institute of Technology Uttarakhand, Srinagar 247174, India
2Kumaon University, Nainital, Uttarakhand 263002, India
3Department of Applied Science, B.T. Kumaon Institute of Technology, Dwarahat 263653, India

Received 9 May 2013; Revised 6 July 2013; Accepted 14 July 2013

Academic Editor: Bobby G. Sumpter

Copyright © 2013 Jeewan Chandra et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Compression behavior of carbon nanotube bundles and individual carbon nanotubes within the bundle has been studied by using the Suzuki, Shanker, and usual Tait formulations. It is found that the Suzuki formulation is not capable of explaining the compression behavior of nanomaterials. Shanker formulation slightly improves the results obtained by the Suzuki formulation, but only usual Tait’s equation (UTE) of state gives results in agreement to the experimental data. The present study reveals that the product of bulk modules and the coefficient of volume thermal expansion remain constant for carbon nanotubes. It has also been found that the individual carbon nanotubes are less compressible than bundles of carbon nanotubes.