This apparently can collect vapor (not fog) in ambient temperature, although the material heats up a little bit while absorbing water and needs to cool back down, which should be fine since when warm it's warmer than ambient air.
All of those rely on condensation, which is caused by temperature getting low enough the air can’t hold water. The mechanism for the new material is completely different. It doesn’t appear to require the air to be saturated.
We already have substances that remove water from air. In those the water becomes absorbed. This seems to work on a similar principle. The real difference is the water doesn’t stay absorbed.
I'm so tempted to link this..
Like, not even ironically.
I know this isn't reddit and all, but, well..
Dew collectors are used in agriculture in deserts for real and I think in Dune too. Shaun Overton has a youtube channel where he's trying to revitalize a piece of desert and he has tried building some.