Electrical power dissipation in semiconducting carbon nanotubes on single crystal quartz and amorphous SiO2

Cheng Lin Tsai, Albert Liao, Eric Pop, Moonsub Shim

Research output: Contribution to journalArticlepeer-review

Abstract

Heat dissipation in electrically biased individual semiconducting carbon nanotubes (CNTs) on single crystal quartz and amorphous SiO2 is examined with temperature profiles obtained by spatially resolved Raman spectroscopy. Despite the differences in phonon velocities, thermal conductivity, and van der Waals interactions with CNTs, on average, heat dissipation into single crystal quartz and amorphous SiO2 is found to be similar. Large temperature gradients and local hot spots often observed underscore the complexity of CNT temperature profiles and may be accountable for the similarities observed.

Original languageEnglish (US)
Article number053120
JournalApplied Physics Letters
Volume99
Issue number5
DOIs
StatePublished - Aug 1 2011

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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