Boron-mediated growth of long helicity-selected carbon nanotubes

X. Blase, J. C. Charlier, A. D. Vita De, Roberto Car, Ph Redlich, M. Terrones, W. K. Hsu, H. Terrones, D. L. Carroll, P. M. Ajayan

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Abstract

We investigate the growth of B-doped carbon nanotubes combining experimental and theoretical techniques. Electron microscopy observations and electron diffraction patterns reveal that B doping considerably increases the length of carbon tubes and leads to a remarkable preferred zigzag chirality. These findings are corroborated by first-principles static and dynamical simulations which indicate that in the zigzag geometry, B atoms act as a surfactant during growth, preventing tube closure. This mechanism does not extend to armchair tubes, suggesting a helicity selection during growth.

Original languageEnglish (US)
Pages (from-to)5078-5081
Number of pages4
JournalPhysical review letters
Volume83
Issue number24
DOIs
StatePublished - Dec 13 1999

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Blase, X., Charlier, J. C., Vita De, A. D., Car, R., Redlich, P., Terrones, M., Hsu, W. K., Terrones, H., Carroll, D. L., & Ajayan, P. M. (1999). Boron-mediated growth of long helicity-selected carbon nanotubes. Physical review letters, 83(24), 5078-5081. https://doi.org/10.1103/PhysRevLett.83.5078