Environmental Engineering Reference
In-Depth Information
In conclusion, we first demonstrate that the NEGF approach is
a very powerful theoretical tool in the study of quantum thermal
transport. Then we apply the approach to understand thermal-
transport properties of nanostructures, focusing on graphene-
related transport systems. The study on thermal transport in GNRs
reveals that the extremely high thermal conductivity of graphene is
causedbytheextraordinarylongphononmeanfreepath.Moreover,
the calculations find that the thermal-transport ability of GNRs can
bestronglydependentontheedgeshape,suggestingtotunethermal
conduction by edge control. Furthermore, using graphene-based
nanodevices as examples, we apply the NEGF method to explore
thermal-transport phenomena in realistic transport systems. Such
studies can guide future applications of thermal management
and/or thermoelectricity.
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