Thermal Conductivity of Nanotubes Revisited: Effects of Chirality, Isotope Impurity, Tube Length, and Temperature

  title={Thermal Conductivity of Nanotubes Revisited: Effects of Chirality, Isotope Impurity, Tube Length, and Temperature},
  author={Gang Zhang and Baowen Li},
We study the dependence of thermal conductivity of single walled nanotubes (SWNT) on chirality, isotope impurity, tube length and temperature by nonequilibrium molecular dynamics method with accurate potentials. It is found that, contrary to electronic conductivity, the thermal conductivity is insensitive to the chirality. The isotope impurity, however, can reduce the thermal conductivity up to 60% and change the temperature dependence behavior. We also found that the tube length dependence of… 
18 Citations
Quantum correction and phonon density of states analysis for thermal conductivity of single walled carbon nanotube with Finite Length
Though thermal conductivity of single walled carbon nanotubes has been intensively studied, the quantum correction method for the temperature dependence of thermal conductivity of the tube and phonon
The Ultrahigh Quantum Thermal Conductance of Hydrogenated Boron Nanotubes
Using first‐principles calculations and phonon dispersion analysis, the authors demonstrate theoretically that a hydrogenated monolayer borophene sheet can form a stable nanotube structure, denoted
Low thermal conductivity in ultrathin carbon nanotube (2, 1)
Detailed lattice dynamic calculations suggest that the acoustic phonon modes greatly soften in CNT (2, 1) as compared to regular CNTs, which result in the remarkable reduction of thermal conductivity.
Phonon engineering in carbon nanotubes by controlling defect concentration.
The results imply the possibility of phonon engineering in nanostructured graphene based materials by controlling the defect concentration, and an analysis of variances in κ for different defect concentrations indicates that defect scattering at low defect concentrations could be the source of large experimental variances.
Diffusion behaviors of energy and momentum for 1D single-walled carbon nanotubes
  • Nianbei Li
  • Physics
    Journal of Physics D: Applied Physics
  • 2020
The single-walled carbon nanotube (CNT) is a quasi-1D material with ultra high thermal conductivity. It is known that the heat conduction is closely related with the energy diffusion and the
Enhancement of Thermoelectric Performance by Reducing Phonon Thermal Conductance in Multiple Core-shell Nanowires
The thermoelectric performance of multiple core-shell NWs can be improved observably with the increase of shell number compared with the single component NWs due to the significant reduction of phonon thermal conductance.
Thermal Conductivity of Amorphous Materials
Thermal conductivity is one of the most fundamental properties of solid materials. The thermal conductivity of ideal crystal materials has been widely studied over the past hundreds years. On the