Electromagnetic wave propagation in an almost circular bundle of closely packed, metallic, carbon nanotubes

Details Electromagnetic wave propagation in an almost circular bundle of closely packed, metallic, carbon nanotubes Electromagnetic wave propagation in an almost circular bundle of closely packed, metallic, carbon nanotubes

2007-05-20

arxiv.org/abs/0705.2866v1

Physics

Condensed Matter

Materials Science

9 pages

Scientific paper

10.1103/PhysRevB.76.155407

An equivalent-multishell approach for the approximate calculation of the characteristics of electromagnetic waves propagating in almost circular (azimuthally symmetric), closely packed bundles of parallel, identical, and metallic carbon nanotubes (CNTs) yields results in reasonably good agreement with a many-body technique, for infinitely long bundles when the number of CNTs is moderately high. The slow-wave coefficients for azimunthally symmetric guided waves increase with the number of metallic CNTs in the bundle, tending for thick bundles to unity, which is characteristic of macroscopic metallic wires. The existence of an azimuthally nonsymmetric guided wave at low frequencies in a bundle of a large number of finite-length CNTs stands in contrast to the characteristics of guided-wave propagation in a single CNT. The equivalent-multishell approach yields the polarizability scalar and the antenna efficiency of a bundle of finite-length CNTs in the long-wavelength regime over a wide frequency range spanning the terahertz and the near-infrared regimes. Edge effects give rise to geometric resonances in such bundles. The antenna efficiency of a CNT bundle at the first resonance can exceed that of a single CNT by four orders of magnitude, which is promising for the design and development of CNT-bundle antennas and composite materials containing CNT-bundles as inclusions.

Affiliated with

Also associated with

No associations

Rating

Electromagnetic wave propagation in an almost circular bundle of closely packed, metallic, carbon nanotubes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Electromagnetic wave propagation in an almost circular bundle of closely packed, metallic, carbon nanotubes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electromagnetic wave propagation in an almost circular bundle of closely packed, metallic, carbon nanotubes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-586129