Heat Dissipation Interfaces Based on Vertically Aligned Diamond/Graphite Nanoplatelets.
Crystalline carbon-based materials are intrinsically chemically inert and good heat conductors, allowing their applications in a great variety of devices. A technological step forward in heat dissipators production can be given by tailoring the carbon phase microstructure, tuning the CVD synthesis conditions. In this work, a rapid bottom-up synthesis of vertically aligned hybrid material comprising diamond thin platelets covered by a crystalline graphite layer was developed. A single run was designed in order to produce a high aspect ratio nanostructured carbon material favoring the thermal dissipation under convection-governed conditions. The produced material was characterized by multiwavelength Raman spectroscopy and electron microscopy (scanning and transmission), and the macroscopic heat flux was evaluated. The results obtained confirm the enhancement of heat dissipation rate in the developed hybrid structures, when compared to smooth nanocrystalline diamond films.
i3N and Physics Department of University of Aveiro , 3810-193 Aveiro, Portugal.
N F
NF
Santos
i3N and Physics Department of University of Aveiro , 3810-193 Aveiro, Portugal.
T
T
Holz
CICECO and Physics Department of University of Aveiro , 3810-193 Aveiro, Portugal.
T
T
Santos
i3N and Physics Department of University of Aveiro , 3810-193 Aveiro, Portugal.
A J S
AJ
Fernandes
Materials Metrology Division, INMETRO , 25250-020, Duque de Caxias - RJ, Brazil.
T L
TL
Vasconcelos
Materials Metrology Division, INMETRO , 25250-020, Duque de Caxias - RJ, Brazil.
C P
CP
Gouvea
Materials Metrology Division, INMETRO , 25250-020, Duque de Caxias - RJ, Brazil.
B S
BS
Archanjo
Materials Metrology Division, INMETRO , 25250-020, Duque de Caxias - RJ, Brazil.
C A
CA
Achete
CICECO and Dept. of Materials and Ceramic Engineering, University of Aveiro , 3810-193 Aveiro, Portugal.
R F
RF
Silva
i3N and Physics Department of University of Aveiro , 3810-193 Aveiro, Portugal.
F M
FM
Costa
CVD; convective cooling; diamond; graphite; nanoplatelets; surface area