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https://doi.org/10.1039/c2nr32949b
Title: | Substrate coupling suppresses size dependence of thermal conductivity in supported graphene | Authors: | Chen, J. Zhang, G. Li, B. |
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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