Imaging as-grown single-walled carbon nanotubes originated from isolated catalytic nanoparticles

Y. Zhang, Y. Li, Woong Kim, D. Wang, H. Dai

Research output: Contribution to journalArticle

139 Citations (Scopus)

Abstract

Discrete catalytic nanoparticles with diameters in the range of 1-3 nm are obtained by placing controllable numbers of metal atoms into the cores of apoferritin. With nanoparticles placed on transmission electron microscope (TEM) grids coated with ultra-thin alumina membranes, isolated single-walled carbon nanotubes are grown by chemical vapor deposition and directly examined by TEM. The characterizations, carried out at single-tube and single-particle level, obtain clear evidence that the diameters of the nanotubes are determined by the diameters of catalytic nanoparticles. For the first time, both ends of an as-grown single-walled nanotube are imaged by TEM, leading to a microscopic picture of the nanotube-growth mechanism.

Original languageEnglish
Pages (from-to)325-328
Number of pages4
JournalApplied Physics A: Materials Science and Processing
Volume74
Issue number3
DOIs
Publication statusPublished - 2002 Mar 1
Externally publishedYes

Fingerprint

Single-walled carbon nanotubes (SWCN)
Nanotubes
nanotubes
Electron microscopes
electron microscopes
carbon nanotubes
Nanoparticles
Imaging techniques
nanoparticles
Apoferritins
Aluminum Oxide
Chemical vapor deposition
Alumina
aluminum oxides
Metals
grids
vapor deposition
tubes
membranes
Membranes

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Imaging as-grown single-walled carbon nanotubes originated from isolated catalytic nanoparticles. / Zhang, Y.; Li, Y.; Kim, Woong; Wang, D.; Dai, H.

In: Applied Physics A: Materials Science and Processing, Vol. 74, No. 3, 01.03.2002, p. 325-328.

Research output: Contribution to journalArticle

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