Journal
ACS NANO
Volume 3, Issue 5, Pages 1274-1278Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn9001903
Keywords
short carbon nanotubes; nanocups; nanorings; nanocontainer
Categories
Funding
- NSF-NER
- Center for High Rate Nanomanufacturing (NSF-NSEC) at Northeastern University
- Provost Office Research
- Directorate For Engineering
- Div Of Engineering Education and Centers [832785] Funding Source: National Science Foundation
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The synthesis of carbon nanostructures, with interesting morphologies, has created a revolution in nanotechnology; carbon nanotube is a case in point, but other nanoscale morphologies of graphitic carbon could provide compelling uses. In particular short structures, including very short nanotubes, have proven impossible to be grown by existing techniques due to the difficulty in controlling and terminating growth during initial stages. Here we present architectures engineered from graphitic carbon, having up to 10(5) times smaller length/diameter (L/D) ratios compared to conventional nanotubes, revealing unique morphologies of nanocups, nanorings, and large area connected nanocup arrays. Such highly engineered hollow nanostructures were fabricated using precisely controlled short nanopores inside anodic aluminum oxide templates. The nanocups were effectively used to hold and contain other nanomaterials, for example, metal nanoparticles, leading to the formation of multicomponent hybrid nanostructures with unusual morphologies. The results reported here open up possibilities to integrate new morphologies of graphitic carbon in nanotechnology applications.
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