There's a catch, of course -- always a catch: a truly nonvolatile memristor violates the Second Law of Thermodynamics. But see: http://www.nature.com/ncomms/jo

There's a catch, of course -- always a catch: a truly nonvolatile memristor violates the Second Law of Thermodynamics. But see: http://www.nature.com/ncomms/journal/v4/n4/abs/ncomms2784.html http://www.nature.com/ncomms/journal/v4/n4/abs/ncomms2784.ht... (open access) The physics is (unsurprisingly) rather involved and I don't have time to decipher it, but, yeah, here's the guts.