Adsorption and permeation events in molecular diffusion

Denis S. Grebenkov

doi:10.3390/molecules29215012

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arXiv · 2410.03942

Adsorption and permeation events in molecular diffusion

Denis S. Grebenkov

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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.

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Denis S. Grebenkov. 2024-10-04. Adsorption and permeation events in molecular diffusion. https://doi.org/10.3390/molecules29215012

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