Phase Diagram of Vertically Shaken Granular Matter
  A shallow, vertically shaken granular bed in a quasi 2-D container is studied experimentally yielding a wider variety of phenomena than in any previous study: (1) bouncing bed, (2) undulations, (3) granular Leidenfrost effect, (4) convection rolls, and (5) granular gas. These phenomena and the transitions between them are characterized by dimensionless control parameters and combined in a full experimental phase diagram. 
Peter Eshuis, Ko van der Weele, Devaraj van der Meer, Robert Bos, and   Detlef Lohse