Thermal Transport in Twisted Carbon Nanotubes
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
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.