Effect of grain boundaries on thermal transport in graphene
By A. Serov, Z. Ong, Eric Pop. 2012
150 citations recorded by the source corpus.
We investigate the influence of grain boundaries (GBs), line defects (LDs), and chirality on thermal transport in graphene using non-equilibrium Green's functions. At room temperature, the ballistic thermal conductance is ∼4.2 GW m−2 K−1, and single GBs or LDs yield transmission from 50% to 80% of this value. LDs with carbon atom octagon defects have lower thermal transmission than that of GBs with pentagon and heptagon defects. We apply our findings to study the thermal conductivity of polycrystalline graphene for practical applications, and find that the type and size of GBs play an important role when grain sizes are smaller than a few hundred nanometers.
Subfields: Civil and Structural Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/e6b5a521b5efb4032ff04a6830ccd8de4de1d118
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In Civil and Structural Engineering
In Materials Chemistry
- J. Renteria
- Denis L. Nika
- Alexander A. Balandin
- Gang Zhang
- Jin-Wu Jiang
- Yong‐Wei Zhang
- Bohayra Mortazavi
- Ronggui Yang
Citations in the corpus
- Graphene Thermal Properties: Applications in Thermal Management and Energy Storage (2014, background): “Supporting the graphene by substrates or ripples in suspended graphene flakes increases the scattering of ZA modes and decreases their partial contribution to the thermal conductivity [37,97].”