Enhancement of Carbon Nanotube Array Interface Thermal Transport Using Nano-coating

In order to solve the heat dissipation problem of the electronic devices interface, the thermal interface material has gradually gained people’s attention and development. Carbon nanotubes Array materials have high thermal conductivity and good stability. In order to further improve the heat transfer of the array-heat sink interface, it is proposed to sputter nano-film on the top of the large-diameter carbon tube array to effectively improve the thermal resistance problem. The thermal resistance of the interface between the array and the heat sink before and after the nanofilm attachment was obtained by the 3ω method. The results show that the array covered by the coating exhibits extremely low interfacial thermal resistance, and the resistance is closely related to the surface roughness. The results provide experimental guidance for the preparation of array thermal interface materials with excellent properties. © 2019, Science Press. All right reserved.