Translocation events in a single-walled carbon nanotube

Jin He, Hao Liu, Pei Pang, Di Cao, Stuart Lindsay

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

Translocation of DNA oligomers through a single-walled carbon nanotube was demonstrated recently. Translocation events are accompanied by giant current pulses, the origin of which remains obscure. Here, we show that the introduction of a nucleotide, guanosine triphosphate, alone into the input reservoir of a carbon nanotube nanofluidic device also gives giant current pulses. Taken together with data on oligomer translocation, these new results suggest that the pulse width has a nonlinear, power-law dependence on the number of nucleotides in a DNA molecule. We have also measured the time for the onset of DNA translocation pulses after bias reversal, finding that the time for the onset of translocation is directly proportional to the period of the bias reversal.

Original languageEnglish (US)
Article number454112
JournalJournal of Physics Condensed Matter
Volume22
Issue number45
DOIs
StatePublished - Nov 17 2010

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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