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|Title:||Molecular dynamics simulation for heat transport in thin diamond nanowires||Authors:||Jiang, J.-W.
|Issue Date:||30-Jun-2011||Citation:||Jiang, J.-W., Wang, B.-S., Wang, J.-S. (2011-06-30). Molecular dynamics simulation for heat transport in thin diamond nanowires. Physical Review B - Condensed Matter and Materials Physics 83 (23) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.83.235432||Abstract:||The phonon thermal conductivity in diamond nanowires (DNWs) is studied by molecular dynamics simulation. It is found that the thermal conductivity in narrower DNW is lower and does not show obvious temperature dependence; a very small value (about 2.0 W/m/K) of thermal conductivity is observed in ultra-narrow DNW, which may be of potential applications in thermoelectric devices. These two phenomena are probably due to the dominant surface effect and phonon confinement effect in narrow DNW. Our simulation reveals a high anisotropy in the heat transport of DNW. Specifically, the thermal conductivity in DNW along  growth direction is about five times larger than that of  and  growth directions. The anisotropy is believed to root in the anisotropic group velocity for acoustic phonon modes in DNW along three different growth directions. © 2011 American Physical Society.||Source Title:||Physical Review B - Condensed Matter and Materials Physics||URI:||http://scholarbank.nus.edu.sg/handle/10635/97243||ISSN:||10980121||DOI:||10.1103/PhysRevB.83.235432|
|Appears in Collections:||Staff Publications|
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