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|Title:||Substrate coupling suppresses size dependence of thermal conductivity in supported graphene||Authors:||Chen, J.
|Issue Date:||21-Jan-2013||Citation:||Chen, J., Zhang, G., Li, B. (2013-01-21). Substrate coupling suppresses size dependence of thermal conductivity in supported graphene. Nanoscale 5 (2) : 532-536. ScholarBank@NUS Repository. https://doi.org/10.1039/c2nr32949b||Abstract:||Thermal conductivity κ of both suspended and supported graphene has been studied by using molecular dynamics simulations. An obvious length dependence is observed in κ of suspended single-layer graphene (SLG), while κ of supported SLG is insensitive to the length. The simulation result of room temperature κ of supported SLG is in good agreement with the experimental value. In contrast to the decrease in κ induced by inter-layer interaction in suspended few-layer graphene (FLG), κ of supported FLG is found to increase rapidly with the layer thickness, reaching about 90% of that of bulk graphite at six layers, and eventually saturates at the thickness of 13.4 nm. More interestingly, unlike the remarkable substrate dependent κ in SLG, the effect of substrate on thermal transport is much weaker in FLG. The underlying physics is investigated and presented. This journal is © The Royal Society of Chemistry.||Source Title:||Nanoscale||URI:||http://scholarbank.nus.edu.sg/handle/10635/98107||ISSN:||20403364||DOI:||10.1039/c2nr32949b|
|Appears in Collections:||Staff Publications|
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