Connection between fragility, mean-squared displacement and shear   modulus in two van der Waals bonded glass-forming liquids
  The temperature dependence of the high-frequency shear modulus measured in the kHz range is compared to the mean-squared displacement measured in the nanosecond range for the two van der Waals bonded glass-forming liquids cumene and 5PPE. This provides an experimental test for the assumption connecting two versions of the shoving model for the non-Arrhenius temperature dependence of the relaxation time in glass formers. The two versions of the model are also tested directly and both are shown to work well for these liquids. 
Henriette Wase Hansen, Bernhard Frick, Tina Hecksher, Jeppe C. Dyre,   Kristine Niss
cond-mat.soft