Thermal Characterization of Nanowire Array in alpha-Al2O3 Matrix

Abstract

Thermal properties characterization of Bi nanowires is critical in order to validate the predicted enhancement of their thermoelectric figure-of-merit. In this paper we report the effective thermal diffusivity of Bi nanowires array embedded in alpha-Al2O3 (alumina) template. The composite material consists of 85% alumina and approximately 15% Bi nanowires with a diameter of 40 nm and an average length of 40 micrometers. Measurements are performed along the nanowire axis. A thermal wave is produced at the front side of the sample and it is monitored at the backside through a fast thermoelectric effect. A one-dimensional heat conduction model is used to extract the thermal diffusivity.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2001
Accession Number
ADP012182

Entities

People

  • Diana-andra Borca-tasciuc
  • Gang Chen
  • Mildred S. Dresselhaus
  • Oded Rabin
  • Yu-ming Lin

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Composite Materials
  • Conductivity
  • Diameters
  • Electrical Conductivity
  • Electrical Properties
  • Experimental Data
  • Figure Of Merit
  • Jet Propulsion
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Measurement
  • Mechanical Engineering
  • Nanocomposites
  • Thermal Conductivity
  • Thermal Diffusivity
  • Thermal Properties

Readers

  • Fluid Dynamics.
  • Solar Photovoltaics and Thermoelectric Devices.
  • Thin Film Deposition Science.