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Phononic heat transfer across an interface: thermal boundary resistance
B N J Persson1, A I Volokitin, H Ueba
1Division of Nanotechnology and New Functional Material Science, Graduate School of Science and Engineering, University of Toyama, Toyama, Japan.
Summary
We developed a general theory for phononic heat transfer across interfaces. Our model accurately estimates heat transfer coefficients and thermal boundary resistance for various solid-solid and solid-liquid systems.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Thermodynamics
Background:
- Phononic heat transfer at interfaces is crucial for thermal management in nanoscale devices.
- Understanding thermal boundary resistance (Kapitza resistance) is essential for predicting heat flow in heterogeneous materials.
Purpose of the Study:
- To develop a general theory for phononic heat transfer across flat interfaces between dissimilar materials.
- To provide simple analytical methods for estimating heat transfer coefficients and thermal boundary resistance.
- To validate the theory with numerical simulations and experimental data.
Main Methods:
- Development of a general theoretical framework for phononic heat transfer.
- Analytical calculations for estimating heat transfer coefficients.
- Numerical simulations for specific solid-solid and solid-liquid interfaces.
- Comparison of theoretical predictions with experimental data for graphene-SiO(2) system.
Main Results:
- A general theory for phononic heat transfer at interfaces was established.
- Simple analytical results for estimating heat transfer coefficients were derived.
- Numerical results for solid-solid, solid-liquid Helium, and graphene-SiO(2) interfaces were obtained.
- Excellent agreement between calculated and experimental heat transfer coefficients for weakly coupled systems.
Conclusions:
- The developed theory provides a robust framework for understanding interfacial heat transfer.
- The analytical and numerical results offer practical tools for predicting thermal performance.
- The study confirms the applicability of the theory to diverse material combinations, including weakly coupled systems.
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