On May 4, 2021, Mei, Baicheng; Zhou, Yuxing; Schweizer, Kenneth S. published an article.Formula: C13H10O3 The title of the article was Experimental test of a predicted dynamics-structure-thermodynamics connection in molecularly complex glass-forming liquids. And the article contained the following:
Understanding in a unified manner the generic and chem. specific aspects of activated dynamics in diverse glass-forming liquids over 14 or more decades in time is a grand challenge in condensed matter physics, phys. chem., and materials science and engineering. Large families of conceptually distinct models have postulated a causal connection with qual. different ‘order parameters’ including various measures of structure, free volume, thermodn. properties, short or intermediate time dynamics, and mech. properties. Construction of a predictive theory that covers both the noncooperative and cooperative activated relaxation regimes remains elusive. Here, we test using solely exptl. data a recent microscopic dynamical theory prediction that although activated relaxation is a spatially coupled local-nonlocal event with barriers quantified by local pair structure, it can also be understood based on the dimensionless compressibility via an equilibrium statistical mechanics connection between thermodn. and structure. This prediction is found to be consistent with observations on diverse fragile mol. liquids under isobaric and isochoric conditions and provides a different conceptual view of the global relaxation map. As a corollary, a theor. basis is established for the structural relaxation time scale growing exponentially with inverse temperature to a high power, consistent with experiments in the deeply supercooled regime. A criterion for the irrelevance of collective elasticity effects is deduced and shown to be consistent with viscous flow in low-fragility inorganic network-forming melts. Finally, implications for relaxation in the equilibrated deep glass state are briefly considered. The experimental process involved the reaction of Phenyl Salicylate(cas: 118-55-8).Formula: C13H10O3
The Article related to dynamics structure thermodn molecularly complex glass forming liquid, glass former supercooled liquid dynamics structure thermodn, supercooled liquid dynamics structure thermodn glass transition, activated relaxation, fragile-to-strong crossover, glass transition, molecular liquids, thermodynamics–dynamics connection and other aspects.Formula: C13H10O3
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