Journal
PHYSICA B-CONDENSED MATTER
Volume 388, Issue 1-2, Pages 326-330Publisher
ELSEVIER
DOI: 10.1016/j.physb.2006.06.135
Keywords
carbon nanotubes; electrical resistivity; thermal conductivity; thermoelectric power; annealing effect; sign change
Categories
Ask authors/readers for more resources
Electrical resistivity, thermal conductivity and thermoelectric power were measured on macroscopic bundles of long multi-wall carbon nanotubes (CNTs) in the temperature range between 2 and 300 K. While the electrical resistivity shows relatively small variation, the thermal conductivity is significantly enhanced and thermoelectric power changes sign from positive to negative after the samples are annealed in Ar at 2800 degrees C. Although the latter can be attributed to the adsorbed oxygen on the CNTs that is reduced through the annealing process, our results suggest the studied properties, especially thermal conductivity, are sensitive to the sample crystallinity that can be significantly improved by high-temperature annealing as well. (c) 2006 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available