VFT eta(T) = eta_0 exp(B / (T - T_0)) describes super-Arrhenius viscosity divergence above T_g; T_0 is Vogel temperature; D = B / T_0 is Angell fragility-index distinguishing strong (high D) from fragile (low D) glass-formers.
VFT eta(T) = eta_0 exp(B / (T - T_0)) describes super-Arrhenius viscosity divergence above T_g; T_0 is Vogel temperature; D = B / T_0 is Angell fragility-index distinguishing strong (high D) from fragile (low D) glass-formers.