Re:Repulsive Van der Waals known for a long time (Score 1)

Even more impressive is what is seen in Superconductors with the Meisner Effect and Flux pinning. I use this set to demonstrate to students the effect http://www.users.qwest.net/~csconductor/Experiment _Kits/Demonstration%20Kits.htm/ . The exciting thing about the article is not levitation but the fact that it may be a way to get rid of friction on the nano level. There are a few other things that I can think of where to apply this but with out actually reading their paper I don't want to comment. But levitation is real, we have been able to do it for a while now.