Mechanical energy dissipation of multiwalled carbon nanotube in ultrahigh vacuum

Takahito Ono, Shinya Sugimoto, Hidetoshi Miyashita, Masayoshi Esashi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Mechanical elements composed of an individual multiwalled carbon nanotube was fabricated and its mechanical energy dissipation was evaluated in an ultrahigh vacuum. The carbon nanotube was oscillated by applying a voltage between the carbon nanotube and a metal electrode, and its vibration was detected by a laser Doppler vibrometer. Heating in vacuum desorbed contaminants from the carbon nanotube surface and decreased mechanical energy loss. However, the Q factor, i.e., the reciprocal number of the energy loss, was still low (∼800). This result suggests that the dominant energy dissipation relies on the bulk defect of the carbon nanotube.

Original languageEnglish
Pages (from-to)L683-L684
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume42
Issue number6 B
Publication statusPublished - 2003 Jun 15

Keywords

  • Laser Doppler vibrometer
  • Mechanical quality factor (Q factor)
  • Multiwalled carbon nanotube
  • Surface effect
  • Ultrahigh vacuum

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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