Thermal conductance of InAs nanowire composites

Ann I. Persson, Yee Kan Koh, David G. Cahill, Lars Samuelson, Heiner Linke

Research output: Contribution to journalArticlepeer-review


The ability to measure and understand heat flow in nanowire composites is crucial for applications ranging from high-speed electronics to thermoelectrics. Here we demonstrate the measurement of the thermal conductance of nanowire composites consisting of regular arrays of InAs nanowires embedded in PMMA using time-domain thermoreflectance (TDTR). On the basis of a proposed model for heat flow in the composite, we can, as a consistency check, extract the thermal conductivity Λ of the InAs nanowires and find ΛNW = 5.3 ± 1.5 W m-1 K-1, in good agreement with theory and previous measurements of individual nanowires.

Original languageEnglish (US)
Pages (from-to)4484-4488
Number of pages5
JournalNano letters
Issue number12
StatePublished - Dec 9 2009

ASJC Scopus subject areas

  • Bioengineering
  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics
  • Mechanical Engineering


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