Synthesis of corn-shape carbon nanofibers on Si and Mo substrates by bias-enhanced microwave plasma chemical vapor deposition

Yasuhiko Hayashi, T. Tokunaga, Y. Yogata, S. Toh, K. Kaneko, T. Soga, T. Jimbo

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A new type of corn-shape carbon nanofibers (CCNFs) with metal-free tips was fabricated and their characteristics were investigated. The CCNFs were grown on Ni/SiO2/Si and Ni/Mo mesh substrates by a microwave plasma-enhanced chemical-vapor deposition method using CH4 and H2 gases with the technique of bias enhanced growth method. Transmission electron microscopy and selected area electron diffraction show that CCNFs were composed of thick cylindrical pure graphite walls, and had nanometer-sized tips with roots. The tips' apex angles of CCNFs were dependent on the substrate temperature, as the cone angles of 20, 39 and 60°.

Original languageEnglish
Pages (from-to)1198-1202
Number of pages5
JournalDiamond and Related Materials
Volume13
Issue number4-8
DOIs
Publication statusPublished - Apr 2004
Externally publishedYes

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Keywords

  • Bias-enhanced microwave plasma chemical vapor deposition
  • Corn-shape carbon nanofibers
  • High-resolution transmission electron microscopy
  • Nanotubes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

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