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Thermal Conductivities of Individual Tin Dioxide Nanobelts

[+] Author Affiliations
Li Shi, Qing Hao, Choongho Yu

University of Texas at Austin, Austin, TX

Natalio Mingo

NASA-Ames Research Center, Moffet Field, CA

Xiangyang Kong, Zhong Lin Wang

Georgia Institute of Technology, Atlanta, GA

Paper No. HT-FED2004-56469, pp. 457-461; 5 pages
doi:10.1115/HT-FED2004-56469
From:
  • ASME 2004 Heat Transfer/Fluids Engineering Summer Conference
  • Volume 4
  • Charlotte, North Carolina, USA, July 11–15, 2004
  • Conference Sponsors: Heat Transfer Division and Fluids Engineering Division
  • ISBN: 0-7918-4693-8 | eISBN: 0-7918-3740-8
  • Copyright © 2004 by ASME

abstract

We have measured the thermal conductivities of a 53-nm-thick and a 64-nm-thick tin dioxide (SnO2 ) nanobelt using a microfabricated device in the temperature range of 80–350 K. The uncertainty of the measurement result was estimated to be 10 percent. The thermal conductivities of the nanobelts were found to be significantly lower than the bulk values, and agree with our calculation results using a full dispersion transmission function approach. Comparison between measurements and calculation suggests that phonon-boundary scattering is the primary effect determining the thermal conductivities.

Copyright © 2004 by ASME

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