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Original Articles

Non-Fourier 3-Omega Method for Thermal Conductivity Measurement

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Pages 123-136 | Received 06 Aug 2009, Published online: 25 Aug 2010
 

Abstract

The 3-omega method for thermal conductivity measurement using the hyperbolic heat conduction equation is presented. Mathematical expressions representing the conditions when non-Fourier effects cannot be neglected are formulated. Results obtained from Fourier and hyperbolic heat conduction equations based on parameterized dielectric thermophysical parameters are compared. The analysis is applied to a thin Chemical vapor deposited (CVD) diamond film and bologna meat and it is shown in these cases that by neglecting the non-Fourier effects one can underestimate the thermal conductivity by 50%.

Acknowledgement

This work is supported by the Lockheed Martin Corporation, within the LANCER project and the Welch Foundation under Grant No. BC-1494.

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