The translocation of a short DNA fragment through a nanopore is addressed when the perforated membrane contains an embedded electrode. Accurate numerical solutions of the coupled Poisson, Nernst-Planck, and Stokes equations for a realistic, fully three-dimensional setup as well as analytical approximations for a simplified model are worked out. By applying a suitable voltage to the membrane electrode, the DNA can be forced to preferably traverse the pore either along the pore axis or at a small but finite distance from the pore wall.
@article{arxiv.1706.09316,
title = {Lateral trapping of DNA inside a voltage gated nanopore},
author = {Thomas Töws and Peter Reimann},
journal= {arXiv preprint arXiv:1706.09316},
year = {2017}
}