Abstract
A new quadrupole model is presented to solve the heat transfer equations in a conventional geometry used in the measurement of thermal conductivity of thin films by the 3ω method. It takes into account the following aspects often neglected in the previous works: thermal resistance in the heater, anisotropy of the thin film, thermal contact resistances and the limited thickness of the sample. The quadrupole model allows us also to compare the Cahill and Duquesne formulas and to find their applicability limits. The average temperature rise is calculated to validate the quadrupole model, it presents a deviation lower than 3.5% compared to the numerical simulation in the range of frequency from 1 Hz to 10 KHz.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.