Accession Number:

ADP012182

Title:

Thermal Characterization of Nanowire Array in alpha-Al2O3 Matrix

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE

Report Date:

2001-11-01

Pagination or Media Count:

6.0

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.

Subject Categories:

  • Inorganic Chemistry
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE