Abstract

We demonstrated a new simultaneous determination technique for the thermal diffusivity and the thermal conductivity of a material using photoacoustic (PA) signals detected by a transparent transducer. The samples were illuminated by a pump beam directly or through the transducer, and these two kinds of PA signals were analyzed. It was shown theoretically that we cannot ignore the two effects of small optical absorption of the transducer and the thermal resistance between the sample and the transducer upon detection of PA signals from the viewpoint of quantitative evaluation. The thermal resistance was provided by a small air gap layer. The thermal properties of Si, InP and Ta were determined by this technique and these measured values were in good agreement with those in the literature.

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

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.