Fig. 3.

(Lower Inset) Onset of the breakdown of the SE law for nine liquids analyzed. (Upper Inset) Breakdown of the DSE law for six liquids. In both cases the breakdowns occur just below the corresponding crossover temperature, identified using the power-law approach of Eq. 2. The main plot shows a scaled representation of the fractional SE and of the fractional DSE, lower and upper data, respectively. In both cases, for all the liquids studied, the scaling exponent ζ takes almost the same value, ζ = 0.85 ± 0.02. We note that the onset of the breakdown of the fractional SE and DSE takes place at the same value of viscosity, η_× ≈ 10³ Poise. These data demonstrate a remarkable degree of universality in the temperature behavior of the transport properties of supercooled liquids.