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Molecular Dynamics Simulations of the Thermal Conductivity of Single-Wall Carbon NanotubesCarbon nanotubes (CNT) have very attractive electronic, mechanical. and thermal properties. Recently, measurements of thermal conductivity in single wall CNT mats showed estimated thermal conductivity magnitudes ranging from 17.5 to 58 W/cm-K at room temperature. which are better than bulk graphite. The cylinderical symmetry of CNT leads to large thermal conductivity along the tube axis, additionally, unlike graphite. CNTs can be made into ropes that can be used as heat conducting pipes for nanoscale applications. The thermal conductivity of several single wall carbon nanotubes has been calculated over temperature range from l00 K to 600 K using non-equilibrium molecular dynamics using Tersoff-Brenner potential for C-C interactions. Thermal conductivity of single wall CNTs shows a peaking behavior as a function of temperature. Dependence of the peak position on the chirality and radius of the tube will be discussed and explained in this presentation.
Document ID
20000121174
Acquisition Source
Ames Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Osman, M.
(Washington State Univ. Pullman, WA United States)
Srivastava, Deepak
(MRJ Technology Solutions Moffett Field, CA United States)
Govindan,T. R.
Date Acquired
August 19, 2013
Publication Date
January 1, 2000
Subject Category
Solid-State Physics
Funding Number(s)
PROJECT: RTOP 519-40-12
CONTRACT_GRANT: NAS2-14303
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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