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Thermal transfer in graphene-interfaced materials: contact resistance and interface engineering
Hanxiong Wang1, Jixuan Gong, Yongmao Pei
1State Key Lab for Turbulence and Complex Systems, College of Engineering, Peking University, Beijing 100871, China.
ACS Applied Materials & Interfaces
|March 8, 2013
Summary
Interfacial thermal conductivity (κI) in graphene-silicon carbide systems was studied. Results show κI is sensitive to graphene thickness, heat flux, and temperature, offering insights for thermal management materials.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Nanotechnology
Background:
- Efficient heat transfer is crucial for advanced electronic devices.
- Graphene-based materials offer unique thermal properties.
- Understanding heat transport at interfaces is key for thermal management.
Purpose of the Study:
- To investigate heat transfer across graphene-silicon carbide interfaces.
- To determine the factors influencing interfacial thermal conductivity (κI).
- To explore interface engineering for novel thermal interface materials.
Main Methods:
- Nonequilibrium molecular dynamics (MD) simulations were employed.
- Graphene layers were treated as an interfacial phase.
- Interfacial thermal conductivity (κI) was calculated.
Main Results:
- Interfacial thermal conductivity (κI) decreased with increasing graphene thickness and heat flux.
- κI increased with rising environmental temperature.
- Intercalating molecules between graphene layers created thermally transparent yet electronically insulating interfaces.
Conclusions:
- Provides fundamental understanding of thermal transport across weakly bound interfaces.
- Offers design strategies for multifunctional thermal interface materials.
- Enables improved thermal management in graphene-based devices and composites.
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