Title of Oral/Poster Presentation

Thermal Transport in Twisted Carbon Nanotubes

Presenter Information

Morgan RueschFollow
Lin ZhangFollow

Class

Article

Department

Mechanical and Aerospace Engineering

Faculty Mentor

Ling Liu

Presentation Type

Oral Presentation

Abstract

Carbon nanotubes (CNTs) have been a focus of research in past decades due to their exceptional electrical, mechanical, and thermal properties. Thermal conductivity of free-standing single wall CNTs are found to be from 580 to 3200 W/mK, which makes CNTs a promising material for thermal management. The effect of mechanical strain and chemisorption on thermal conductivity of CNTs has been extensively studied; however, no research on thermal conductivity of twisted CNTs has been reported. In this study, reverse non-equilibrium molecular dynamics was used to study this effect. Results show an unexpected effect occurring in a wave-like temperature profile along the length of the CNT. Phonon analysis provides a fundamental understanding of these thermal transport findings.

Start Date

4-9-2015 9:00 AM

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Apr 9th, 9:00 AM

Thermal Transport in Twisted Carbon Nanotubes

Carbon nanotubes (CNTs) have been a focus of research in past decades due to their exceptional electrical, mechanical, and thermal properties. Thermal conductivity of free-standing single wall CNTs are found to be from 580 to 3200 W/mK, which makes CNTs a promising material for thermal management. The effect of mechanical strain and chemisorption on thermal conductivity of CNTs has been extensively studied; however, no research on thermal conductivity of twisted CNTs has been reported. In this study, reverse non-equilibrium molecular dynamics was used to study this effect. Results show an unexpected effect occurring in a wave-like temperature profile along the length of the CNT. Phonon analysis provides a fundamental understanding of these thermal transport findings.