Buckytubes and derivatives: Their growth and implications for buckyball formation

V. P. Dravid, X. Lin, Y. Wang, X. K. Wang, A. Yee, J. B. Ketterson, Robert P. H. Chang

Research output: Contribution to journalArticle

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Abstract

Transmission electron microscopy (TEM) observations of graphite tubules (buckytubes) and their derivatives have revealed not only the previously reported buckytube geometries but also additional shapes of the buckytube derivatives. Detailed cross-sectional TEM images reveal the cylindrical cross section of buckytubes and the growth pattern of buckytubes as well as their derivatives. These observations of frozen growth stages of buckytubes and derivatives suggest a helical growth mechanism analogous to that of crystal growth via screw dislocations. The helicacy of buckytubes is analyzed by electron diffraction whereas the anisotropy of electronic structure is revealed by momentum transfer resolved electron energy loss spectrometry. Based on the TEM observations, it is proposed that buckytubes act as precursors to closed-shell fullerene (buckyball) formation and the possible steps in buckyball formation are outlined. In arc evaporation experiments in which residue rods (containing various amounts of buckytubes) were used as the starting anode for fullerene production, the amount of buckytubes in the rod was correlated with fullerene yield.

Original languageEnglish
Pages (from-to)1601-1604
Number of pages4
JournalScience
Volume259
Issue number5101
Publication statusPublished - Mar 12 1993

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Fullerenes
Carbon Nanotubes
Growth
Transmission Electron Microscopy
Electrons
Graphite
Anisotropy
Crystallization
Spectrum Analysis
Electrodes

ASJC Scopus subject areas

  • General

Cite this

Dravid, V. P., Lin, X., Wang, Y., Wang, X. K., Yee, A., Ketterson, J. B., & Chang, R. P. H. (1993). Buckytubes and derivatives: Their growth and implications for buckyball formation. Science, 259(5101), 1601-1604.

Buckytubes and derivatives : Their growth and implications for buckyball formation. / Dravid, V. P.; Lin, X.; Wang, Y.; Wang, X. K.; Yee, A.; Ketterson, J. B.; Chang, Robert P. H.

In: Science, Vol. 259, No. 5101, 12.03.1993, p. 1601-1604.

Research output: Contribution to journalArticle

Dravid, VP, Lin, X, Wang, Y, Wang, XK, Yee, A, Ketterson, JB & Chang, RPH 1993, 'Buckytubes and derivatives: Their growth and implications for buckyball formation', Science, vol. 259, no. 5101, pp. 1601-1604.
Dravid VP, Lin X, Wang Y, Wang XK, Yee A, Ketterson JB et al. Buckytubes and derivatives: Their growth and implications for buckyball formation. Science. 1993 Mar 12;259(5101):1601-1604.
Dravid, V. P. ; Lin, X. ; Wang, Y. ; Wang, X. K. ; Yee, A. ; Ketterson, J. B. ; Chang, Robert P. H. / Buckytubes and derivatives : Their growth and implications for buckyball formation. In: Science. 1993 ; Vol. 259, No. 5101. pp. 1601-1604.
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