Thermal Radiation From Carbon Nanotube in Terahertz Range
A.M. Nemilentsau, G.Ya. Slepyan, S.A. Maksimenko
TL;DR
This paper theoretically investigates the thermal radiation properties of finite-length carbon nanotubes in the terahertz range, highlighting the formation of discrete spectra in metallic CNTs and proposing their use as thermal nanoantennas.
Contribution
It introduces the concept of using carbon nanotubes as thermal nanoantennas and analyzes their spectral properties in the terahertz range.
Findings
Discrete spectrum forms in metallic CNTs due to surface-plasmon reflection.
No discrete spectrum appears in semiconductor CNTs.
Metallic CNTs can be effectively used as thermal nanoantennas.
Abstract
The thermal radiation from an isolated finite-length carbon nanotube (CNT) is theoretically investigated both in near- and far-field zones. The formation of the discrete spectrum in metallic CNTs in the terahertz range is demonstrated due to the reflection of strongly slowed-down surface-plasmon modes from CNT ends. The effect does not appear in semiconductor CNTs. The concept of CNT as a thermal nanoantenna is proposed.
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