How many times can a diffusing molecule permeate across a membrane or be adsorbed on a substrate? We employ an 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: a flat boundary and a spherical confinement. Some applications of these fundamental results are discussed.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11547776 | PMC |
| http://dx.doi.org/10.3390/molecules29215012 | DOI Listing |
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