A simple route to short cup-stacked carbon nanotubes by sonication

Daisuke Shimamoto, Kazunori Fujisawa, Hiroyuki Muramatsu, Takuya Hayashi, Yoong Ahm Kim, Takahashi Yanagisawa, Morinobu Endo, Mildred S. Dresselhaus

Research output: Contribution to journalLetterpeer-review

10 Scopus citations


A simple but effective way of producing short cup-stacked carbon nanotubes with high quality is demonstrated using sonication in an ethanol/distilled water mixture. The substantial removal of amorphous carbon deposited on the truncated conical layer-stacked nanotubes by controlled air oxidation was a critical precondition to cut the nanotubes without substantial structural degradation. The short nanotubes (below 1 μm) prepared by a sonication-generated shear force exhibited a narrow length distribution (median length = 0.2 μm) and chemically active edges in the outer surface, thereby resulting in high dispersibility in an aqueous solution.

Original languageEnglish (US)
Pages (from-to)3643-3647
Number of pages5
Issue number12
StatePublished - Oct 2010

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Materials Science


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