Title: Electrical and thermal transport properties of magnetically aligned multi-walled carbon nanotubes spray coated on copper substrates

Authors: Deok Jun Whang; Yong Seung Chi; Tae Jin Kang

Addresses: Department of Materials Science and Engineering, Seoul National University, Daehak-dong, Gwanak-gu, Seoul 151-742, Korea ' Department of Materials Science and Engineering, Seoul National University, Daehak-dong, Gwanak-gu, Seoul 151-742, Korea ' Department of Materials Science and Engineering, Seoul National University, Daehak-dong, Gwanak-gu, Seoul 151-742, Korea

Abstract: A magnetic field was applied to multi-walled carbon nanotubes (MWNTs) decorated with Fe₃O₄ nanoparticles while being spray coated on copper substrates to obtain a preferred orientation. The Fe₃O₄-MWNTs hybrid materials were aligned vertical or horizontal on the copper substrate and their electrical and thermal transport properties were investigated. The electrical and thermal transport properties showed that the vertical alignment of Fe₃O₄-MWNTs on the copper substrate was achieved, while the horizontal alignment was less successful.

Keywords: multi-walled carbon nanotubes; MWCNTs; CNTs; hybrid materials; magnetic field induced alignment; electrical conductivity; thermal conductivity; spray coatings; copper substrates; nanoparticles; nanotechnology.

DOI: 10.1504/IJNT.2013.054204

International Journal of Nanotechnology, 2013 Vol.10 No.8/9, pp.623 - 631

Published online: 01 Aug 2013 *

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