Published 2009
| Published
Journal Article
Open
Spatially resolved temperature measurements of electrically heated carbon nanotubes
Abstract
Spatially resolved Raman spectra of individual pristine suspended carbon nanotubes are observed under electrical heating. The Raman G+ and G- bands show unequal temperature profiles. The preferential heating is more pronounced in short nanotubes (2 µm) than in long nanotubes (5 µm). These results are understood in terms of the decay and thermalization of nonequilibrium phonons, revealing the mechanism of thermal transport in these devices. The measurements also enable a direct estimate of thermal contact resistances and the spatial variation of thermal conductivity.
Additional Information
© 2009 American Physical Society. Received 17 December 2008; published 9 March 2009. We acknowledge useful discussions with James Hone and Philip Kim. Work done at USC was supported by DOE Grant No. DE-FG02-07ER46376 and the National Science Foundation Graduate Research Program. PACS: 63.22.-m; 65.80.+n; 78.30.-jAttached Files
Published - Deshpande2009p1219Phys_Rev_Lett.pdf
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Deshpande2009p1219Phys_Rev_Lett.pdf
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Additional details
- Eprint ID
- 14289
- Resolver ID
- CaltechAUTHORS:20090522-112854224
- DE-FG02-07ER46376
- Department of Energy
- NSF
- Created
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2009-08-13Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field