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Thermal conductance of InAs nanowire composites.

Authors :
Persson AI
Koh YK
Cahill DG
Samuelson L
Linke H
Source :
Nano letters [Nano Lett] 2009 Dec; Vol. 9 (12), pp. 4484-8.
Publication Year :
2009

Abstract

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.

Details

Language :
English
ISSN :
1530-6992
Volume :
9
Issue :
12
Database :
MEDLINE
Journal :
Nano letters
Publication Type :
Academic Journal
Accession number :
19995087
Full Text :
https://doi.org/10.1021/nl902809j