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Glassy dynamics in asymmetric binary mixtures of hard spheres

Lázaro-Lázaro, Edilio and Perera-Burgos, Jorge Adrián and Laermann, Patrick and Sentjabrskaja, Tatjana and Pérez-Ángel, Gabriel and Laurati, Marco and Egelhaaf, S. U. and Medina-Noyola, Magdaleno and Voigtmann, Thomas and Castañedo-Priego, Ramón and Elizondo Aguilera, Luis Fernando (2019) Glassy dynamics in asymmetric binary mixtures of hard spheres. Physical Review E, 99, 042603. American Physical Society. doi: 10.1103/PhysRevE.99.042603. ISSN 2470-0045.

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We perform a systematic and detailed study of the glass transition in highly asymmetric binary mixtures of colloidal hard spheres, combining differential dynamic microscopy experiments, event-driven molecular dynamics simulations, and theoretical calculations, exploring the whole state diagram and determining the self-dynamics and collective dynamics of both species. Two distinct glassy states involving different dynamical arrest transitions are consistently described, namely, a double glass with the simultaneous arrest of the self-dynamics and collective dynamics of both species, and a single glass of large particles in which the self-dynamics of the small species remains ergodic. In the single-glass scenario, spatial modulations in the collective dynamics of both species occur due to the structure of the large spheres, a feature not observed in the double-glass domain. The theoretical results, obtained within the self-consistent generalized Langevin equation formalism, are in agreement with both simulations and experimental data, thus providing a stringent validation of this theoretical framework in the description of dynamical arrest in highly asymmetric mixtures. Our findings are summarized in a state diagram that classifies the various amorphous states of highly asymmetric mixtures by their dynamical arrest mechanisms.

Item URL in elib:https://elib.dlr.de/129128/
Document Type:Article
Title:Glassy dynamics in asymmetric binary mixtures of hard spheres
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Lázaro-Lázaro, EdilioUniversidad Autonoma de San Luis Potosi, MexicoUNSPECIFIEDUNSPECIFIED
Perera-Burgos, Jorge AdriánCONACYT Cancun, MexicoUNSPECIFIEDUNSPECIFIED
Laermann, PatrickUniversität DüsseldorfUNSPECIFIEDUNSPECIFIED
Sentjabrskaja, TatjanaUniversity of DüsseldorfUNSPECIFIEDUNSPECIFIED
Laurati, MarcoUniversidad de LeonUNSPECIFIEDUNSPECIFIED
Egelhaaf, S. U.Heinrich-Heine-Universität DüsseldorfUNSPECIFIEDUNSPECIFIED
Elizondo Aguilera, Luis FernandoInstitute of Materials Physics in SpaceUNSPECIFIEDUNSPECIFIED
Date:5 April 2019
Journal or Publication Title:Physical Review E
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:042603
Publisher:American Physical Society
Keywords:glass transition, binary mixtures, partial arrest, colloidal suspensions
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:16 Sep 2019 07:25
Last Modified:17 Mar 2021 13:40

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