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Geometric Structure of Ultra-small Carbon Nanotubes by Barry J. Cox; James M. Hill is a Materials Science article available to read on EtoBox.

What is Geometric Structure of Ultra-small Carbon Nanotubes about?

This letter presents the geometric structure of carbon nanotubes with radii less than 1.7 A ̊, based on the new polyhedral model [1], and in the limit of decreasing radius some unusual and rather counterintuitive geometric structures arise. Recently several groups have been successful in producing very smaller carbon nanotubes in restricted environments, such as nanotubes with 2 A ̊radii in zeolite channels [2] and others with a radii of 1.5 A ̊produced within the center of multi-walled carbon nanotubes [3]. It has also been reported that these small nanotubes might exhibit new properties [4], and they have the potential to be very useful in the design of nanoelectromechanical devices. It has also been suggested [5] that high-curvature nanotube like structures can be formed from sp 3 carbon by fixing a single ligand to every participating carbon atom. As will be seen, the bond angle of the small carbon nanotube structures examined here are very close to the usual value of sp 3 carbon and therefore this provides another possible motivation to examine the structures described here. The major deficiency of the conventional rolled-up model is that it ignores the effects of curvature

Who reads Geometric Structure of Ultra-small Carbon Nanotubes?

Author

Barry J. Cox; James M. Hill

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0008-6223)

Published

2008

Language

EN

Field

Materials Science (Physical Sciences)