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DIAMETER AND LENGTH EFFECT ON DIFFUSIVE-BALLISTIC PHONON TRANSPORT IN A CARBON NANOTUBE
| Content Provider | CiteSeerX |
|---|---|
| Author | Shiomi, Junichiro |
| Abstract | We report a non-equilibrium molecular dynamics (MD) study on heat conduction of finite-length single-walled carbon nanotubes (SWNTs). The length and diameter dependences of the thermal conductivity are quantified for a range of nanotubelengths up to a micrometer at room temperature using two different temperature control techniques. A thorough investigation was carried out on the influence of intrinsic thermal boundary resistance between the temperaturecontrolled layers and the rest of the SWNT. The trend of length effect indicates a gradual transition from nearly pure ballistic phonon transport to diffusive-ballistic phonon transport. The nearly pure ballistic phonon transport was also confirmed by the minor diameter-dependence of thermal conductivity for short SWNTs. For longer SWNTs with stronger diffusive effect, the thermal conductivity is larger for SWNTs with smaller diameters. |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Thermal Conductivity Pure Ballistic Phonon Transport Length Effect Gradual Transition Diffusive Effect Temperaturecontrolled Layer Short Swnts Diameter Dependence Intrinsic Thermal Boundary Resistance Non-equilibrium Molecular Dynamic Room Temperature Different Temperature Control Technique Finite-length Single-walled Carbon Nanotube Minor Diameter-dependence Thorough Investigation Diffusive-ballistic Phonon Transport Heat Conduction |
| Content Type | Text |
