Structure of Single-Wall Carbon Nanotubes: A Graphene Helix

Title
Structure of Single-Wall Carbon Nanotubes: A Graphene Helix
Authors
이재갑이소형김진규민봉기김용일이경일안계혁Phillip John
Keywords
CNT; Single-wall; Graphene; Helix; Structure; HRTEM
Issue Date
2014-08
Publisher
Small
Citation
VOL 10, NO 16, 3283-3290
Abstract
Evidence is presented in this paper that certain single-wall carbon nanotubes are not seamless tubes, but rather adopt a graphene helix resulting from the spiral growth of a nano-graphene ribbon. The residual traces of the helices are confi rmed by highresolution transmission electron microscopy and atomic force microscopy. The analysis also shows that the tubular graphene material may exhibit a unique armchair structure and the chirality is not a necessary condition for the growth of carbon nanotubes. The description of the structure of the helical carbon nanomaterials is generalized using the plane indices of hexagonal space groups instead of using chiral vectors. It is also proposed that the growth model, via a graphene helix, results in a ubiquitous structure of single-wall carbon nanotubes.
URI
http://pubs.kist.re.kr/handle/201004/48052
ISSN
16136810
Appears in Collections:
KIST Publication > Article
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