What question did this study set out to answer?

Analyze two-dimensional AC temperature wave propagation in two-layered platelike samples to evaluate the validity of measuring thermal diffusivity with AC calorimetry.

August 15, 1996Journal of Applied Physics

Analysis of ac temperature wave during the measurement of thermal diffusivity of two-layered platelike samples

View Full Paper

Ask AI

Bookmark

Analyze two-dimensional AC temperature wave propagation in two-layered platelike samples to evaluate the validity of measuring thermal diffusivity with AC calorimetry.
Applied a theoretical Fourier-transformed Green’s function technique to model two-dimensional AC temperature waves parallel and perpendicular to the sample surface in two-layered systems.
Identified that the system deviates from single-layer behavior when the AC thermal frequency is high, the difference in layer diffusivities is large, and the high-diffusivity layer is thin.
Determined that these measurement deviations result from an inhomogeneous AC temperature distribution running normal to the sample surface.
Showed that reversing these conditions allows AC calorimetry to accurately determine the thermal diffusivity of thin film samples mounted on substrates.

Discussion

No takes yet. Share an insight, caveat, or question.

Implication

Theoretical analysis reveals conditions causing deviation from single-layer heat flow in two-layered plates, highlighting operational boundaries for AC calorimetry on supported thin films.

Cite This Study

Yamane et al. (1996) studied this question.

synapsesocial.com/papers/6a7070ae3ce530166bc2d381 https://doi.org/10.1063/1.363095

View Full Paper

Ask AI

Bookmark

Implication

Theoretical analysis reveals conditions causing deviation from single-layer heat flow in two-layered plates, highlighting operational boundaries for AC calorimetry on supported thin films.

Analysis of ac temperature wave during the measurement of thermal diffusivity of two-layered platelike samples

Key Points

Discussion

Implication

Cite This Study

Analysis of ac temperature wave during the measurement of thermal diffusivity of two-layered platelike samples

Key Points

Discussion

Implication

Cite This Study

Also Consider

Also Consider