Statistics of DNA capture by a solid-state nanopore

Mirna Mihovilovic, Nicholas Hagerty, Derek Stein

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

A solid-state nanopore can electrophoretically capture a DNA molecule and pull it through in a folded configuration. The resulting ionic current signal indicates where along its length the DNA was captured. A statistical study using an 8-nm-wide nanopore reveals a strong bias favoring the capture of molecules near their ends. A theoretical model shows that bias to be a consequence of configurational entropy rather than a search by the polymer for an energetically favorable configuration. We also quantified the fluctuations and length dependence of the speed of simultaneously translocating polymer segments from our study of folded DNA configurations.

Original languageEnglish (US)
Article number028102
JournalPhysical Review Letters
Volume110
Issue number2
DOIs
StatePublished - Jan 7 2013
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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