Growing Y-junction carbon nanotubes
Article Abstract:
It has been possible to use nano-structured template channels to grow individual Y-junction carbon-nanotube heterostructures by the pyrolysis of acetylene with cobalt catalysis. Y-junction nanotubes with stems and branches of different diameters can be produced by varying the anodization conditions. This research has shown that Y-junction carbon nanotubes can be grown controllably and in preference to straight nanotubes. Large numbers of well-aligned Y-junction carbon nanotubes can be formed by using a Y-branched nanochannel for pyrolytic nanotube growth.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
User Contributions:
Comment about this article or add new information about this topic:
Density of states reflects diameter in nanotubes
Article Abstract:
It is shown that all semiconducting single-wall nanotubes having similar diameters should have similar states densities near the Fermi level, independent of the translational unit cell size. A single-wall nanotube (SWNT) was built from a single rolled sheet of graphite, and the allowed electron states were the graphene bands satisfying periodic boundary conditions k.R=2pim, with m an integer. The predictions are consistent with numerical results illustrated.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
'Buckypaper' from coaxial nanotubes
Article Abstract:
Carbon nanotubes are needed to be in a pure, highly crystalline form to investigate the electronic properties, thermal transport and mechanical behavior of it. The processes to obtain different forms of Double-walled carbon nanotubes, or (DWNTs) are emphasized.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Superplastic carbon nanotubes. Materials for fuel-cell technologies
- Abstracts: Photorespiration protects C3 plants from photooxidation. Plants on the web. Plants condemned as pesticides
- Abstracts: Perceptions of Germany unveiled. A lower jaw from a Cretaceous parrot. Lower Palaeolithic hunting spears from Germany
- Abstracts: Low-temperature superplasticity in nanostructured nickel and metal alloys. Will solid hydrogen ever be a metal?
- Abstracts: Function of Rieger syndrome gene in left-right asymmetry and craniofacial development. The origin of spinifex texture in komatiites