Topological structure of Y-junction carbon nanotubes
2000; Elsevier BV; Volume: 45; Issue: 6 Linguagem: Inglês
10.1016/s0167-577x(00)00125-7
ISSN1873-4979
AutoresBo Gan, J Ahn, Q Zhang, Qiuyue Huang, Chew Kerlit, S. F. Yoon, Rusli Rusli, V.A Ligachev, X.-B Zhang, W.-Z Li,
Tópico(s)Nanopore and Nanochannel Transport Studies
ResumoY-junction carbon nanotubes (CNTs) grown by hot-filament chemical vapor deposition (HFCVD) method have been investigated by transmission electron microscopy (TEM). A fish-bone like feature has been observed on the tubes around the Y-junction. It is found that all the Y-junctions have a predominant branching angle ranging from 50–80°, roughly twice the reported bending angles of single bend junctions. A speculation of the topological structure of single-walled Y-junction CNTs has been made by adopting the feature. A simulated atomic model is found to interpret well the particularly angled Y-junction CNTs, where a total of six heptagons around the Y-junctions are required as topological defects to fit well with the hexagonal network.
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