A MODIFIED 3ω METHOD FOR THERMAL CONDUCTIVITY MEASUREMENT OF ONE-DIMENSIONAL NANOSTRUCTURES

Open Access
Author:
Lee, Hsiao-Fang
Graduate Program:
Mechanical Engineering
Degree:
Master of Science
Document Type:
Master Thesis
Date of Defense:
None
Committee Members:
  • Md Amanul Haque, Thesis Advisor
  • Aman Haque, Thesis Advisor
Keywords:
  • 3ω method
  • thermal conductivity
  • aluminum thin film
  • FIB Platinum
Abstract:
We present a new analytical model for thermal conductivity measurement of one-dimensional nanostructures on substrates. The model expands the capability of the conventional 3ω technique, to make it versatile with both in and out of plane thermal conductivity measurement on specimens either freestanding or attached to substrates. We demonstrate this new technique on both conducting (aluminum) and semi-conducting (focused ion beam deposited platinum) specimens. The agreement with the established values in the literature suggests the superiority of this technique in terms of convenience and robustness of measurement.