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|Title:||Thermal conductivity and thermal rectification in unzipped carbon nanotubes||Authors:||Ni, X.
|Issue Date:||1-Jun-2011||Citation:||Ni, X., Zhang, G., Li, B. (2011-06-01). Thermal conductivity and thermal rectification in unzipped carbon nanotubes. Journal of Physics Condensed Matter 23 (21) : -. ScholarBank@NUS Repository. https://doi.org/10.1088/0953-8984/23/21/215301||Abstract:||We study the thermal transport in completely unzipped carbon nanotubes, which are called graphene nanoribbons, partially unzipped carbon nanotubes, which can be seen as carbon-nanotube-graphene-nanoribbon junctions, and carbon nanotubes by using molecular dynamics simulations. It is found that the thermal conductivity of a graphene nanoribbon is much less than that of its perfect carbon nanotube counterparts because of the localized phonon modes at the boundary. A partially unzipped carbon nanotube has the lowest thermal conductivity due to additional localized modes at the junction region. More strikingly, a significant thermal rectification effect is observed in both partially unzipped armchair and zigzag carbon nanotubes. Our results suggest that carbon-nanotube-graphene-nanoribbon junctions can be used in thermal energy control. © 2011 IOP Publishing Ltd.||Source Title:||Journal of Physics Condensed Matter||URI:||http://scholarbank.nus.edu.sg/handle/10635/98347||ISSN:||09538984||DOI:||10.1088/0953-8984/23/21/215301|
|Appears in Collections:||Staff Publications|
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