Thermal conductivity vs depth profiling using the hot disk technique-Analysis of anisotropic, inhomogeneous...

Area of Science:

• Materials Science
• Physics
• Analytical Chemistry

Background:

• Accurate thermal conductivity analysis is crucial for material characterization.
• Existing methods struggle with inhomogeneous samples and anisotropy.
• Anisotropy can distort depth-position data in thermal conductivity measurements.

Purpose of the Study:

• To extend a surface thermal conductivity analysis method for inhomogeneous and anisotropic samples.
• To incorporate anisotropy ratio into computational schemes for improved depth-position estimation.
• To validate the enhanced method through experimental testing.

Main Methods:

• Developed an extended computational scheme to account for anisotropy ratio.
• Applied the modified method to analyze thermal conductivity variations near a sample surface.
• Utilized experimental testing to verify the improved depth-position mapping.

Main Results:

• The extended method successfully analyzes inhomogeneous samples with anisotropy.
• Incorporating the anisotropy ratio significantly improves depth-position estimations.
• Experimental validation confirmed enhanced accuracy in depth position mapping.

Conclusions:

• The enhanced thermal conductivity analysis method accurately characterizes anisotropic and inhomogeneous materials.
• This advancement provides more reliable depth-position data for complex sample structures.
• The improved method overcomes distortions caused by anisotropy in thermal analysis.