Llaguno, M. C. and Hone, J. and Johnson, A. T. and Fischer, J. E. (2001) Thermal Conductivity of Single Wall Carbon Nanotubes: Diameter and Annealing Dependence. In: Electronic Properties of Molecular Nanostructures. AIP Conference Proceedings. No.591. American Institute of Physics , Melville, NY, pp. 384-387. ISBN 0-7354-0033-4 http://resolver.caltech.edu/CaltechAUTHORS:20111118-100352326
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The thermal conductivity, k(T), of bulk single-wall carbon nanotubes (SWNT's) displays a linear temperature dependence at low T that has been attributed to 1D quantization of phonons. To explore this issue further, we have measured the k(T) of samples with varying average tube diameters. We observe linear k(T) up to higher temperatures in samples with smaller diameters, in agreement with a quantization picture. In addition, we have examined the effect of annealing on k(T). We observe an enhancement in k(T) for annealed samples which we attribute to healing of defects and removal of impurities. These measurements demonstrate how the thermal properties of an SWNT material can be controlled by manipulating its intrinsic nanoscale properties.
|Item Type:||Book Section|
|Additional Information:||© 2001 American Institute of Physics. Issue Date: 7 November 2001. This research is supported by the US Department of Energy DOE DEFG02-98ER45701 (MCL and JEF) and by the National Science Foundation (NSF Grant No. DMR 98-02560) (JH and ATI).|
|Subject Keywords:||carbon nanotubes; thermal conductivity; laser ablation; X-ray crystallography; X-ray diffraction; transmission electron microscopy; phonon spectra|
|Classification Code:||PACS: 81.07.De; 61.48.+c; 68.37.Lp|
|Official Citation:||Thermal conductivity of single wall carbon nanotubes: Diameter and annealing dependence M. C. Llaguno, J. Hone, A. T. Johnson, and J. E. Fischer, AIP Conf. Proc. 591, 384 (2001), DOI:10.1063/1.1426893|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Jason Perez|
|Deposited On:||21 Nov 2011 03:00|
|Last Modified:||26 Dec 2012 14:25|
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