The method for quantifying the amount of each carbon nanotube specie, as defined by its diameter and chiral angle, as well as the semiconducting-to- metallic ratio in any type of carbon nanotube sample is discussed. Single-wall carbon nanotubes grown by the cobalt-molybdenum catalyst based (CoMoCAT) process are characterized. The semiconducting-to-metallic ratio is found to be 11:1. A single semiconducting specie, named the (6,5) nanotube represents 2 5 of the sample, while the most abundant metallic nanotube is the (7,4), which exhibits a diameter similar to the (6,5).
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2005 Aug 15|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics