Scanning tunneling microscopy observation of tightly wound, single-wall coiled carbon nanotubes
Facultés Universitaires Notre-Dame de la Paix rue de Bruxelles 61, B
5000 Namur, Belgium
2 Research Institute for Technical Physics and Materials Science H 1525 Budapest, P.O. Box 49, Hungary
Accepted: 6 March 2000
Scanning tunneling microscopy (STM) images of carbon nanotubes grown by the catalytic cracking of hydrocarbons, which exhibit a well-defined axial periodicity in the 1 nm range, are reported. The data are interpreted as tightly wound, single-wall, coiled carbon nanotubes with an interspire distance of 0.34 nm as the distance between graphene layers in graphite or the distance of single-wall carbon nanotubes in ropes.
PACS: 61.48.+c – Fullerenes and fullerene-related materials / 61.16.Ch – Scanning probe microscopy: scanning tunneling, atomic force, scanning optical, magnetic force, etc / 81.05.Tp – Fullerenes and related materials; diamonds, graphite
© EDP Sciences, 2000