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 language | English |
|---|---|
| Pages (from-to) | 325-328 |
| Number of pages | 4 |
| Journal | Applied Physics A: Materials Science and Processing |
| Volume | 74 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2002 Mar 1 |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - Imaging as-grown single-walled carbon nanotubes originated from isolated catalytic nanoparticles
AU - Zhang, Y.
AU - Li, Y.
AU - Kim, Woong
AU - Wang, D.
AU - Dai, H.
PY - 2002/3/1
Y1 - 2002/3/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0036501750&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036501750&partnerID=8YFLogxK
U2 - 10.1007/s003390201274
DO - 10.1007/s003390201274
M3 - Article
AN - SCOPUS:0036501750
VL - 74
SP - 325
EP - 328
JO - Applied Physics
JF - Applied Physics
SN - 0340-3793
IS - 3
ER -