Thermal Conductance of InAs Nanowire Composites
Ann PerssonLund UniversityYee Kan KohPhysics Department and Materials Science Institute, University of Oregon, Eugene, Oregon 97403, Department of Material Science and Engineering, University of Illinois, Urbana, Illinois 61801, and Solid State Physics and The Nanometer Structure Consortium, Lund University, Box 118, 221 00 Lund, SwedenDavid G. CahillLund UniversityLars SamuelsonUniversity of OregonHeiner LinkeUniversity of Oregon
2009en
ABI
Annotatsiya
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 Lambda of the InAs nanowires and find Lambda(NW) = 5.3 +/- 1.5 W m(-1) K(-1), in good agreement with theory and previous measurements of individual nanowires.
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