Scattering characteristics of metallic single wall carbon nanotubes embedded in dielectric medium
In this paper, a model for the metallic single carbon nanotubes embedded in dielectric medium is proposed and its scattering properties at normal incidence of the plane wave are investigated. Seven models are investigated for electromagnetic scattering via Mie scattering theory based on a quantum mechanical conductivity and effective boundary conditions of Carbon nanotubes. The differences of scattering cross-section among Carbon nanotubes embedded in dielectric medium, single Carbon nanotubes and pure dielectric medium are presented. The results obtained can explain the advantages of Carbon nanotubes in practical applications clearly, which include promoting the mechanical strength used as THz transmission lines without changing their electromagnetic properties, increasing the current-carrying capacity to achieve high speed transmission lines, and realizing higher radiation efficiency of nano-antennas. Furthermore, the results of this paper also provide helpful reference for potential applications of the mixture of Carbon nanotubes and dielectric medium in biomedicine fields.