Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-28T11:06:21.610Z Has data issue: false hasContentIssue false
  • English
  • Français

Characterization of Co-catalyzed Multiwalled Carbon Nanotubes by High-Resolution Transmission Electron Microscopy

Published online by Cambridge University Press:  11 February 2011

Chih-Chin Wang ,
Chuan-Pu Liu ,
Ruo-Mei Liu  and
Kuen-Hou Liao
Chih-Chin Wang
Affiliation:
Department of Materials Science and Engineering, National Cheng-Kung University, Tainan, Taiwan 701
Chuan-Pu Liu
Affiliation:
Department of Materials Science and Engineering, National Cheng-Kung University, Tainan, Taiwan 701
Ruo-Mei Liu
Affiliation:
Department of Materials Science and Engineering, National Cheng-Kung University, Tainan, Taiwan 701
Kuen-Hou Liao
Affiliation:
Department of Materials Science and Engineering, National Cheng-Kung University, Tainan, Taiwan 701
Get access

Abstract

The dependence of characteristics of multiwalled carbon nanotubes (MWCNT) on the microstructure of cobalt catalysts are intensively investigated by high-resolution transmission electron microscopy (HREM). The cobalt catalysts are prepared by either molecule beam epitaxy (MBE) or by DC magnetron sputtering, followed by MWCNT growth by microwave plasma CVD. The MBE-grown Co thin films consist of large epitaxial grains, whereas the Co nanoparticles of FCC or HCP crystal structures can be directly grown on Si(001) substrates by sputtering. Various HREM technologies are applied to completely characterize the microstructures of those Co catalysts and MWCNT. The results reveal that the morphology and microstructures of MWCNT are greatly controlled by the characteristics of Co catalysts. Better quality of carbon nanotube can be grown by FCC cobalt rather than HCP cobalt. The different effects of cobalt catalysts on MWCNT are discussed in this paper.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 737 , 2002 , F8.21
Copyright
Copyright © Materials Research Society 2003

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Iijima, S., ‘Helical microtubules of graphitic carbon’, Nature, 354, 56 (1991).Google Scholar
2. Service, R. F., ‘Nanotubes show image-display talent’, Science, 270, 1119 (1995).Google Scholar
3. Wang, Q. H., Setlur, A. A., Lauerhaas, J. M., Dai, J. Y., Seelig, E. W. and Chang, R. P. H., ‘A nanotube-based field-emission flat panel display’, Appl. Phys. Lett., 72, 2912 (1998).Google Scholar
4. Dai, H., Hafner, J. H., Rinzler, A. G., Colbert, D. T. and Smalley, R. E., ‘Nanotubes as nanoprobes in scanning probe microscopy’, Nature, 384, 147 (1996).Google Scholar
5. Dai, H., Franklin, N., and Han, J., ‘Exploiting the properties of carbon nanotubes for nanolithography’, Appl. Phys. Lett., 73, 1508 (1998).Google Scholar
6. Hamada, N., Sawada, S. and Oshiyama, A., ‘New one-dimensional conductors: graphitic microtubules’, Phys. Rev. Lett., 68, 1579 (1992).Google Scholar
7. Frank, S., Poncharal, P., Wang, Z. L. and de Heer, W. A., ‘Carbon nanotube quantum resistors’, Science, 280, 1744 (1998).Google Scholar
8. Bethune, D. S., Kiang, C. H., de Vries, M. S., Gorman, G., Savoy, R., Vasquez, J. and Beyers, R., ‘Cobalt-catalysed growth of carbon nanotubes with single-atomic-layer walls’, Nature, 363, 605 (1993).Google Scholar
9. Terrones, M., Grobert, N., Olivares, J., Zhang, J. P., Terrones, H., Kordatos, K., Hsu, W. K., Hare, J. P., Townsend, P. D., Prassides, K., Cheetham, A. K., Kroto, H. W. and Walton, D. R. M., ‘Controlled production of aligned-nanotube bundles’, Nature, 388, 52 (1997).Google Scholar
10. Willams, David B. and Barry Carter, C. “Transmission Electron Microscopy”.Google Scholar