New scaling paradigm for dynamics in glass-forming systems

The lack of ultimate scaling relations for previtreous changes the primary relaxation time or viscosity in glass-forming systems constitutes grand fundamental challenge, also hindering development relevant material engineering applications. report links problem to location domain remote from a hypothetical divergence, hidden solid glass state. As solution, distortions-sensitive and linearized derivative-based analysis is proposed. It implemented being checkpoints basic transition models: free volume, entropic, critical-like, avoided criticality, kinetically constrained, Ising model related. For discussed relations, alternative formulations based on fragility, semi-universal metric dynamics, are presented. approach activation energy index, showing its relative changes, Derived validated experimental data homologous series polyols, glycerol sorbitol. Only two equations passed exam: MYEGA, recent ‘activation critical’ (AC), their pressure counterparts. shows that coherent picture linking (i) Super-Arrhenius temperature path, (ii) Super-Barus behavior anomalous detected compessing, namely (iii) inflection, (iv) decrease speeding time, possible. limited reliability so-called Stickel counterpart used detecting dynamic crossover domain.