광열편향법을 이용한 이방성 재료의 열전도계수 측정에 관한 이론적 연구

A Theoretical Study for the Thermal Conductivity Measurement of Anisotropic Material using Photothermal Deflection Spectroscopy

We have analyzed the three-dimensional thermal conduction in anisotropic materials using nonsymmetric-Fourier transforms. And a complete theoretical treatment of the photothermal deflection spectroscopy has been performed for thermal conductivity measurement in anisotropic medium. Thermal conductivity tensor was determined by the deflection angle and phase angle with the relative position between the heating and probe beams. The influence of the parameters, such as modulation frequency of the heating beam, the thermal conductivity tensor, was investigated.