| Title: |
Permeability and diffusion resistance of porous membranes: Analytical theory and its numerical test |
| Authors: |
Skvortsov, Alexei T.; Dagdug, Leonardo; Hilder, Emily F.; Berezhkovskii, Alexander M.; Bezrukov, Sergey M. |
| Contributors: |
National Institutes of Health |
| Source: |
The Journal of Chemical Physics ; volume 158, issue 5 ; ISSN 0021-9606 1089-7690 |
| Publisher Information: |
AIP Publishing |
| Publication Year: |
2023 |
| Description: |
This study is devoted to the transport of neutral solutes through porous flat membranes, driven by the solute concentration difference in the reservoirs separated by the membrane. Transport occurs through membrane channels, which are assumed to be non-overlapping, identical, straight cylindrical pores connecting the reservoirs. The key quantities characterizing transport are membrane permeability and its diffusion resistance. Such transport problems arising in very different contexts, ranging from plant physiology and cell biology to chemical engineering, have been studied for more than a century. Nevertheless, an expression giving the permeability for a membrane of arbitrary thickness at arbitrary surface densities of the channel openings is still unknown. Here, we fill in the gap and derive such an expression. Since this expression is approximate, we compare its predictions with the permeability obtained from Brownian dynamics simulations and find good agreement between the two. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1063/5.0138036 |
| DOI: |
10.1063/5.0138036/16703405/054114_1_online.pdf |
| Availability: |
https://doi.org/10.1063/5.0138036; https://pubs.aip.org/aip/jcp/article-pdf/doi/10.1063/5.0138036/16703405/054114_1_online.pdf |
| Accession Number: |
edsbas.ED48CB1C |
| Database: |
BASE |