Adsorption and permeation events in molecular diffusion
Chemical Physics
2025-07-15 v1 Statistical Mechanics
Abstract
How many times a diffusing molecule can permeate across a membrane or be adsorbed on a substrate? We employ the encounter-based approach to find the statistics of adsorption or permeation events for molecular diffusion in a general confining medium. Various features of these statistics are illustrated for two practically relevant cases of a flat boundary and a spherical confinement. Some applications of these fundamental results are discussed.
Cite
@article{arxiv.2410.03942,
title = {Adsorption and permeation events in molecular diffusion},
author = {Denis S. Grebenkov},
journal= {arXiv preprint arXiv:2410.03942},
year = {2025}
}