Carbon nanotube electronic displacement encoder with sub-nanometer resolution

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


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
Issue number3
StatePublished - May 2007


  • Carbon nanotube encoder
  • Interlayer tunneling
  • Nanometrology

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics
  • Computational Mathematics
  • Electrical and Electronic Engineering


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