Simulation of the electric response of DNA translocation through a semiconductor nanopore-capacitor

Maria E. Gracheva, Anlin Xiong, Aleksei Aksimentiev, Klaus Schulten, Gregory Timp, Jean Pierre Leburton

Research output: Contribution to journalArticlepeer-review

Abstract

A multi-scale/multi-material computational model for simulation of the electric signal detected on the electrodes of a metal-oxide-semiconductor (MOS) capacitor forming a nanoscale artificial membrane, and containing a nanopore with translocating DNA, is presented. The multi-scale approach is based on the incorporation of a molecular dynamics description of a translocating DNA molecule in the nanopore within a three-dimensional Poisson equation self-consistent scheme involving electrolytic and semiconductor charges for the electrostatic potential calculation. The voltage signal obtained from the simulation supports the possibility for single nucleotide resolution with a nanopore device. The electric signal predicted on the capacitor electrodes complements ongoing experiments exploring the use of nanopores in a MOS capacitor membrane for DNA sequencing.

Original languageEnglish (US)
Pages (from-to)622-633
Number of pages12
JournalNanotechnology
Volume17
Issue number3
DOIs
StatePublished - Feb 14 2006

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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