Chirality and Diameter Influence on Thermal Conductivity of Single- Walled Carbon Nanotubes

Y Feng and J Zhu and DW Tang, JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 15, 3092-3097 (2015).

DOI: 10.1166/jnn.2015.9637

Influence of chirality and diameter on thermal conductivity of Single- Walled Carbon Nanotube (SWNT) with different tube lengths have been investigated using non-equilibrium molecular dynamics (NEMD) method. The tube lengths of the SWNTs studied here are 20, 50 and 100 nm, respectively, and at each length the relationship between chiral angle and thermal conductivity of SWNT has been revealed; the dependence of thermal conductivity on diameter has also been studied. We find that chirality impact on thermal conductivity of SWNT is more obvious when tube length is relatively shorter, while diameter effect is more noticeable when tube gets longer. With larger chiral angle, thermal conductivity of chiral SWNTs is greater than that with smaller chiral angle and thermal conductivity increases with diameter.

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