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

Keywords

  • Carbon nanotube encoder
  • Interlayer tunneling
  • Nanometrology

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Computational Theory and Mathematics

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