I am studying translocation of dsDNA poly(AT)45 via graphene nanopore at 0.1080 V/nm electric field in 1 M KCL solution. The production run is performed in NVT ensemble using Nose-Hoover thermostat. I am trying to calculate ionic current using formula (1) given in reference link 1. This reference calculates ionic current using z-coordinates of "ions only". I have two questions:
http://pubs.acs.org/doi/abs/10.1021/nn202989w
http://pubs.rsc.org/en/Content/ArticleLanding/2015/RA/C4RA12530D#!divAbstract