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Understanding the thermal conductivity of Diamond/Copper composites by first-principles calculations
- Source :
- Carbon. 148:249-257
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- SThe present paper investigates the nanoscale thermal transport at diamond/copper (dCu) interfaces using the density functional theory (DFT) and the atomistic Green's function method. The DFT calculations show the boundary scattering become negligible for diamond particles larger than 10 μm. The temperature-dependent thermal conductivity of the dCu composite is predicted according to the thermal boundary conductance and thermal conductivity from DFT calculations. The results show a low thermal boundary conductance (18.5–26.9 MW/m2K at 300 K) at dCu interfaces causes the reduction in the thermal conductivity of dCu composites with small diamond particles or at low temperatures. Due to the dominant effects of interfacial resistance, adding small diamond particles (
- Subjects :
- Materials science
Scattering
Composite number
Conductance
Diamond
chemistry.chemical_element
02 engineering and technology
General Chemistry
engineering.material
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Copper
0104 chemical sciences
Thermal conductivity
chemistry
Thermal
engineering
General Materials Science
Density functional theory
Composite material
0210 nano-technology
Subjects
Details
- ISSN :
- 00086223
- Volume :
- 148
- Database :
- OpenAIRE
- Journal :
- Carbon
- Accession number :
- edsair.doi...........9c37361e9ad92b57f8019172dc6fee3c