[jnellis]

I can't find it now on youtube but years ago there was a pump someone made using old HDD platters. The action relied upon having two platters a certain distance apart such that surface tension would drag water between the plates and then fling it higher than it's source.

[vbezhenar]

It won't work. Plates will get wet, but you can't tear off that water without spending lot of work. That would be perpetual motion machine if you could make it work.

[margalabargala]

The pump in question spun the platters with an electric motor. It's an interesting mechanism for a pump, not a power-free one.