http://www.sciencedaily.com/releases/2014/12/141216123829.htm
Carnegie's Ivan Naumov and Russell Hemley discover hydrogen forms grapheme layers/clusters instead of metal under pressure. This is an experimental validation of the Rydberg matter structure of hydrogen. Instead of high pressures, quantum mechanics can produce this ring structure using a principle called Rydberg Blockade. Potassium provides a quantum mechanical template that directs hydrogen to form in rings just like potassium does...or lithium. See Mesoscopic Rydberg-blockaded ensembles in the superatom regime and beyond http://www.nature.com/nphys/journal/v11/n2/abs/nphys3214.html
