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Simultaneous measurement of thermal diffusivity, heat capacity, and thermal conductivity by Fourier transform thermal analysis
Junko Morikawa, Toshimasa Hashimoto, Akikazu Maesono

The Fourier analysis of higher-order harmonics of temperature wave provides a new technique for simultaneous measurement of thermal properties of thin films as a function of frequency under temperature scanning. The mathematical formula for the propagation of a square wave is examined first in comparison with that of a sine wave and the principle of Fourier transform thermal analysis is validated experimentally. Results of thermoplastics are shown and the glass transition and crystallisation are discussed.

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