Waiting-time dependent non-equilibrium phase diagram of simple glass- and gel-forming liquids

Under numerous circumstances, many soft and hard materials are present in a puzzling wealth of non-equilibrium amorphous states, whose properties are not stationary and depend on preparation. They are often summarized in unconventional “phase diagrams” that exhibit new “phases” and/or “transitions”...

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Veröffentlicht in:The Journal of chemical physics 2021-05, Vol.154 (17), p.174901-174901
Hauptverfasser: Zepeda-López, Jesús Benigno, Medina-Noyola, Magdaleno
Format: Artikel
Sprache:eng
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Zusammenfassung:Under numerous circumstances, many soft and hard materials are present in a puzzling wealth of non-equilibrium amorphous states, whose properties are not stationary and depend on preparation. They are often summarized in unconventional “phase diagrams” that exhibit new “phases” and/or “transitions” in which time, however, is an essential variable. This work proposes a solution to the problem of theoretically defining and predicting these non-equilibrium phases and their time-evolving phase diagrams, given the underlying molecular interactions. We demonstrate that these non-equilibrium phases and the corresponding non-stationary (i.e., aging) phase diagrams can indeed be defined and predicted using the kinetic perspective of a novel non-equilibrium statistical mechanical theory of irreversible processes. This is illustrated with the theoretical description of the transient process of dynamic arrest into non-equilibrium amorphous solid phases of an instantaneously quenched simple model fluid involving repulsive hard-sphere plus attractive square well pair interactions.
ISSN:0021-9606
1089-7690
DOI:10.1063/5.0039524