Unimpeded Permeation of Water Through Helium-Leak–Tight Graphene-Based Membranes

Re:Unimpeded Permeation of Water Through Helium-Leak–Tight G... by tbrownaw on Thursday February 16, 2023 @12:21AM (#34815369)

There's a fun experiment where you can grease a kitchen strainer and if the holes are small enough it'll hold water because of the surface tension.

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Re:Unimpeded Permeation of Water Through Helium-Leak–Tight G... by twawaaay on Thursday February 16, 2023 @08:53AM (#34818578)

And at the same time it will pass a thick oil... all due to surface tension, polarity, etc.

Which is to say don't think about the filter as a geometrical sieve that has holes that pass molecules solely based on their size (either it fits or not).

This is not true even at macro level.

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