Journal
CARBON
Volume 47, Issue 12, Pages 2898-2903Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2009.06.038
Keywords
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Funding
- National Science Foundation [ECS-05-08514, DMI-0304019]
- Office of Naval Research [N00014-06-1-0234]
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The optical absorption anisotropy of multi-walled carbon nanotubes (MWCNTs) has been quantitatively characterized through the determination of the absorbance and the degree of linear polarization. A model considering the orientation of the MWCNTs and the sensitivity to both co-polarized and cross-polarized radiation, through electric field depolarization effects, was used to understand the experimental results. The MWCNT optical absorption cross-sections for both the co-polarized radiation (similar to 0.1 angstrom(2)/atom) and the cross-polarized radiation (similar to 0.05 angstrom(2)/atom) were found to be much larger than for single-walled carbon nanotubes. Our results indicate the promise of MWCNTs for applications involving radiation absorption. (C) 2009 Elsevier Ltd. All rights reserved.
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