title: Thermal conductance of InAs nanowire composites.
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.
authors.affiliation: Physics Department and Materials Science Institute, University of Oregon, Eugene, Oregon 97403, USA.
authors.forename: Ann I
authors.initials: AI
authors.lastname: Persson
authors.forename: Yee Kan
authors.initials: YK
authors.lastname: Koh
authors.forename: David G
authors.initials: DG
authors.lastname: Cahill
authors.forename: Lars
authors.initials: L
authors.lastname: Samuelson
authors.forename: Heiner
authors.initials: H
authors.lastname: Linke
mesh_terms: D001152:Arsenicals / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D007204:Indium / Q000737:chemistry*; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D019904:Polymethyl Methacrylate / Q000737:chemistry; D013499:Surface Properties; D013696:Temperature; D013814:Thermal Conductivity
chemical_list: D001152:Arsenicals; D007204:Indium; D019904:Polymethyl Methacrylate; C076773:indium arsenide