# Any example of colloidal solution where liquid Helium is solvent?

I would like to see any information, if it exists, about colloidal solutions where Helium is "solvent".

Background of that question is, I'm wondering giving surface energy effects, how potentially small can be water ice particles at low temperatures.

• Problem is that helium has very low density, so particles would tend to plummet to the bottom IMO. – Mithoron Jul 14 '16 at 19:26
• @Mithoron Yes, considered it as issue, although background have another few layers of backgrounds, one of them is sedimentation coefficient and brownian motion. I come-up with that question after thinking about ultra centrifugal separation. So this way it's not an issue but more what I would like to have. Methods of getting fine particles also not clear in this case, so it's more about how theoretically fine they could to be in such circumstances. Not sure at all if Helium may have some effect of preventing them to agglutinate. – MolbOrg Jul 14 '16 at 19:44

This is a question to physics department. Chemists only see liquid helium when refilling NMR instruments. Boiling point and comfort working with changes in this order: He < H2 < N2< NH3 < H2O. I didn't find any papers regarding colloidal systems in N2. So, chances are nobody looked into He yet. Try a deep search on N2 colloids first.