Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Colloquium: Ionic phenomena in nanoscale pores through 2D materials

Published

Author(s)

Subin Sahu, Michael P. Zwolak

Abstract

Ion transport through channels and nanoscale pores cuts across many disciplines, from single- molecule sensing to pharmacology and cellular physiology to battery and fuel cell technologies. Two-dimensional materials, such as graphene, MoS$_2$, and hexagonal boron nitride, are recent additions to these fields. Low-dimensional materials afford new opportunities to develop filtration and sensing technologies, encompassing ion exclusion membranes, DNA sequencing, single molecule detection, and beyond. Moreover, the physics of ionic transport through pores and constrictions within these materials is a distinct realm of competing many-particle interactions (e.g., electrostatic blockade, solvation/dehydration, hydrogen bond dynamics) and confinement. This opens up alternative routes to creating biomimetic pores and can even give analogues of quantum phenomena, such as quantized ionic conductance, in classical systems. Indeed, these prospects make membranes of 2D materials -- i.e., 2D membranes -- fascinating. We will discuss both the physics and applications of ion transport and sensing in 2D membranes.
Citation
Reviews of Modern Physics
Volume
91

Keywords

Ion transport, Ion Channel, nanopore, sequencing, molecular sensing, membrane separation, desalination

Citation

Sahu, S. and Zwolak, M. (2019), Colloquium: Ionic phenomena in nanoscale pores through 2D materials, Reviews of Modern Physics, [online], https://doi.org/10.1103/RevModPhys.91.021004 (Accessed June 18, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created June 27, 2019, Updated January 27, 2020