The Role of Noise in Determining Selective Ionic Conduction Through Nano-Pores

Gibby, William Alexander Thomas and Barabash, Miraslau and Guardiani, Carlo and Luchinsky, Dmitry and McClintock, Peter Vaughan Elsmere (2019) The Role of Noise in Determining Selective Ionic Conduction Through Nano-Pores. In: 2018 IEEE 13th Nanotechnology Materials and Devices Conference (NMDC). IEEE. ISBN 9781538610176

[img]
Preview
PDF (GibbyNMDC2019RoleOfNoiseInDetermining)
GibbyNMDC2019RoleOfNoiseInDetermining.pdf - Accepted Version
Available under License Creative Commons Attribution-NonCommercial.

Download (1MB)

Abstract

The problem of predicting selective transport of ions through nano-pores from their structure in the biological and nano-technological systems is addressed. We use a molecular dynamics simulation to provide insight into the key physical parameters of nano-pores and develop a self-consistent analytic theory describing ionic conduction and selectivity through these devices. We analyse the ion's dehydration and excess chemical potential, derive an expression for the conductivity of the nano-pore, and emphasize the role of fluctuations in its performance. The theory is verified by comparison of the predicted current-voltage characteristics with the molecular dynamics results and experimental data obtained for a graphene nano-pore and the KcsA biological channel.

Item Type:
Contribution in Book/Report/Proceedings
Additional Information:
©2018 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
ID Code:
130706
Deposited By:
Deposited On:
25 Jan 2019 16:30
Refereed?:
Yes
Published?:
Published
Last Modified:
03 Apr 2020 00:55