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Distribution of mean escape times for 102 random walk runs of a water molecule (non-interactive model) for different cavity geometries (cavity size D and entrance-escape hole size h). (a) D = 15 nm, h = 1 nm; (b) D = 10 nm, h = 1 nm; (c) D = 5 nm, h = 1 nm; (d) D = 15 nm, h = 2 nm; (e) D = 10 nm, h = 2 nm (f) D = 5 nm, h = 1 nm. Distributions are non-normal and besides that skewness and long tails indicate non-equilibrium processes inside the cavities.
