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Non-equilibrium relaxation and aging in the dynamics of a dipolar fluid quenched towards the glass transition

Peredo-Ortiz, Ricardo and Zubieta Rico, Pablo and Cortés-Moralez, Ernesto and Pérez-Ángel, Gabriel and Voigtmann, Thomas and Medina-Noyola, Magdaleno and Elizondo Aguilera, Luis Fernando (2021) Non-equilibrium relaxation and aging in the dynamics of a dipolar fluid quenched towards the glass transition. Journal of Physics - Condensed Matter, 34, 084003. Institute of Physics (IOP) Publishing. doi: 10.1088/1361-648X/ac3b75. ISSN 0953-8984.

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The recently developed non-equilibrium self-consistent generalized Langevin equation theory of the dynamics of liquids of non-spherically interacting particles [2016 J. Phys. Chem. B 120 7975] is applied to the description of the irreversible relaxation of a thermally and mechanically quenched dipolar fluid. Specifically, we consider a dipolar hard-sphere liquid quenched (at tw = 0) from full equilibrium conditions towards different ergodic–non-ergodic transitions. Qualitatively different scenarios are predicted by the theory for the time evolution of the system after the quench (tw > 0), that depend on both the kind of transition approached and the specific features of the protocol of preparation. Each of these scenarios is characterized by the kinetics displayed by a set of structural correlations, and also by the development of two characteristic times describing the relaxation of the translational and rotational dynamics, allowing us to highlight the crossover from equilibration to aging in the system and leading to the prediction of different underlying mechanisms and relaxation laws for the dynamics at each of the glass transitions explored.

Item URL in elib:https://elib.dlr.de/147981/
Document Type:Article
Title:Non-equilibrium relaxation and aging in the dynamics of a dipolar fluid quenched towards the glass transition
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Zubieta Rico, PabloUniversidad Autónoma de San Luis PotosíUNSPECIFIEDUNSPECIFIED
Cortés-Moralez, ErnestoUniversidad Autónoma de San Luis PotosíUNSPECIFIEDUNSPECIFIED
Medina-Noyola, MagdalenoUniversidad Autónoma de San Luis PotosíUNSPECIFIEDUNSPECIFIED
Elizondo Aguilera, Luis FernandoInstitute of Materials Physics in SpaceUNSPECIFIEDUNSPECIFIED
Date:19 November 2021
Journal or Publication Title:Journal of Physics - Condensed Matter
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:084003
Publisher:Institute of Physics (IOP) Publishing
Keywords:glass transition, aging, dipolar fluid
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Research under Space Conditions
DLR - Research theme (Project):R - Material Design and New Materials
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Voigtmann, Dr.rer.nat. Thomas
Deposited On:10 Jan 2022 13:22
Last Modified:30 Jan 2024 11:13

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