# Helical microtubules of graphitic carbon

@article{Iijima1991HelicalMO,
title={Helical microtubules of graphitic carbon},
author={Sumio Iijima},
journal={Nature},
year={1991},
volume={354},
pages={56-58}
}
• S. Iijima
• Published 1 November 1991
• Physics
• Nature
THE synthesis of molecular carbon structures in the form of C60 and other fullerenes1 has stimulated intense interest in the structures accessible to graphitic carbon sheets. Here I report the preparation of a new type of finite carbon structure consisting of needle-like tubes. Produced using an arc-discharge evaporation method similar to that used for fullerene synthesis, the needles grow at the negative end of the electrode used for the arc discharge. Electron microscopy reveals that each…
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