Carbon nanotube electronic displacement encoder with sub-nanometer resolution

Hanqing Jiang, M. F. Yu, J. Q. Lu, Y. Huang, H. T. Johnson, X. G. Zhang, P. Ferreira

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Electric conductance of a telescope double-walled carbon nanotube oscillates as a function of telescoping distance. The period of such oscillation is one half of the lattice constant of graphene, a/2 = 0.123 nm, instead of the lattice constant a as expected. The halving of the period results from the combination of the periodic interlayer lattice alignment and the occurrence of antiresonance. When combined with the periodicity in the energy space at a fixed displacement, the telescopic displacement can be reliably and accurately determined to the sub-nanometer resolution. This effect can be used to design an electronic displacement encoder.

Original languageEnglish (US)
Pages (from-to)574-577
Number of pages4
JournalJournal of Computational and Theoretical Nanoscience
Volume4
Issue number3
StatePublished - May 2007

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Keywords

  • Carbon nanotube encoder
  • Interlayer tunneling
  • Nanometrology

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Computational Mathematics
  • Electrical and Electronic Engineering

Cite this

Jiang, H., Yu, M. F., Lu, J. Q., Huang, Y., Johnson, H. T., Zhang, X. G., & Ferreira, P. (2007). Carbon nanotube electronic displacement encoder with sub-nanometer resolution. Journal of Computational and Theoretical Nanoscience, 4(3), 574-577.