Abstract

We report experimental studies of heat transport for a system of Au nanorods immobilized on a crystalline quartz support and immersed in various organic fluids. The Au nanorods are abruptly heated by a subpicosecond optical pulse; the cooling of the Au nanorods is monitored by transient absorption. We analyze the data using a three-dimensional model that describes heat flow between the nanorod and fluid with an additional interface thermal conductance added to account for heat transport between the Au nanorods and the high thermal conductivity support. For methanol, ethanol, toluene, and hexane, the thermal conductance of the nanorod/fluid interface falls within a narrow range: 36 ± 4 MW m-2 K-1 for methanol, 32 ± 6 MW m-2 K-1 for ethanol, 30 ± 5 MW m-2 K-1 for toluene, and 25 ± 4 MW m-2 K-1 for hexane.

Original languageEnglish (US)
Pages (from-to)26335-26341
Number of pages7
JournalJournal of Physical Chemistry C
Volume116
Issue number50
DOIs
StatePublished - Dec 20 2012

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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