Diameter selective characterization of single-wall carbon nanotubes

Details Diameter selective characterization of single-wall carbon nanotubes Diameter selective characterization of single-wall carbon nanotubes

2004-03-05

arxiv.org/abs/cond-mat/0403179v1

Physics

Condensed Matter

Materials Science

Scientific paper

10.1103/PhysRevB.71.165439

A novel method is presented which allows the characterization of diameter selective phenomena in SWCNTs. It is based on the transformation of fullerene peapod materials into double-wall carbon nanotubes and studying the diameter distribution of the latter. The method is demonstrated for the diameter selective healing of nanotube defects and yield from C$_{70}$ peapod samples. Openings on small diameter nanotubes are closed first. The yield of very small diameter inner nanotubes from C$_{70}$ peapods is demonstrated. This challenges the theoretical models of inner nanotube formation. An anomalous absence of mid-diameter inner tubes is observed and explained by the suppressed amount of C$_{70}$ peapods due to the competition of the two almost equally stable standing and lying C$_{70}$ peapod configurations.

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