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Science 23 April 1993:
Vol. 260. no. 5107, pp. 515 - 518
DOI: 10.1126/science.260.5107.515
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Articles

Vapor-Condensation Generation and STM Analysis of Fullerene Tubes

Maohui Ge 1 and Klaus Sattler 1

1 Department of Physics and Astronomy, University of Hawaii, Honolulu, HI 96822

Fullerene tubular structures can be generated by vapor condensation of carbon on an atomically flat graphite surface. Scanning tunneling microscope (STM) images revealed the presence of tubes with extremely small diameters (from 10 to 70 angstroms), most of which are terminated by hemispherical caps. Atomic resolution images of such structures showed that the tubes have a helical graphitic nature. The formation of the tubes under the quasi-free conditions suggests that the growth to tubular rather than spherical configurations is preferred for "giant fullerenes."

Submitted on December 21, 1991
Accepted on February 16, 1993

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Science. ISSN 0036-8075 (print), 1095-9203 (online)