Coupling between criticality and gelation in "sticky" spheres: a structural analysis

Abstract

<p>We combine experiments and simulations to study the link between criticality and gelation in sticky spheres.</p>

Autoren

David Richard
James Hallett
Thomas Speck
C Patrick Royall

DOI

10.1039/c8sm00389k

eISSN

1744-6848

ISSN

1744-683X

Ausgabe der Veröffentlichung

27

Zeitschrift

Soft Matter

Sprache

en

Online publication date

2018

Paginierung

5554 - 5564

Status

Published online

Herausgeber

Royal Society of Chemistry (RSC)

Herausgeber URL

http://dx.doi.org/10.1039/c8sm00389k

Datum der Datenerfassung

2024

Titel

Coupling between criticality and gelation in “sticky” spheres: a structural analysis

Ausgabe der Zeitschrift

14

Datenquelle: Crossref

Abstract

We combine experiments and simulations to study the link between criticality and gelation in sticky spheres. We employ confocal microscopy to image colloid-polymer mixtures and Monte Carlo simulations of the square-well (SW) potential as a reference model. To this end, we map our experimental samples onto the SW model. We find an excellent structural agreement between experiments and simulations, both for locally favored structures at the single particle level and large-scale fluctuations at criticality. We follow in detail the rapid structural change in the critical fluid when approaching the gas-liquid binodal and highlight the role of critical density fluctuations for this structural crossover. Our results link the arrested spinodal decomposition to long-lived energetically favored structures, which grow even away from the binodal due to the critical scaling of the bulk correlation length and static susceptibility.

Addresses

Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7-9, 55128 Mainz, Germany.

Autoren

David Richard
James Hallett
Thomas Speck
C Patrick Royall

DOI

10.1039/c8sm00389k

eISSN

1744-6848

Externe Identifier

PubMed Identifier: 29809218

Funding acknowledgements

Deutsche Forschungsgemeinschaft: TRR 146

Open access

false

ISSN

1744-683X

Ausgabe der Veröffentlichung

27

Zeitschrift

Soft matter

Sprache

eng

Medium

Print

Paginierung

5554 - 5564

Datum der Veröffentlichung

2018

Status

Published

Datum der Datenerfassung

2018

Titel

Coupling between criticality and gelation in "sticky" spheres: a structural analysis.

Sub types

Journal Article

Ausgabe der Zeitschrift

14

Datenquelle: Europe PubMed Central

Abstract

We combine experiments and simulations to study the link between criticality and gelation in sticky spheres. We employ confocal microscopy to image colloid-polymer mixtures and Monte Carlo simulations of the square-well (SW) potential as a reference model. To this end, we map our experimental samples onto the SW model. We find an excellent structural agreement between experiments and simulations, both for locally favored structures at the single particle level and large-scale fluctuations at criticality. We follow in detail the rapid structural change in the critical fluid when approaching the gas-liquid binodal and highlight the role of critical density fluctuations for this structural crossover. Our results link the arrested spinodal decomposition to long-lived energetically favored structures, which grow even away from the binodal due to the critical scaling of the bulk correlation length and static susceptibility.

Autoren

David Richard
James Hallett
Thomas Speck
C Patrick Royall

Autoren-URL

https://www.ncbi.nlm.nih.gov/pubmed/29809218

DOI

10.1039/c8sm00389k

eISSN

1744-6848

Ausgabe der Veröffentlichung

27

Zeitschrift

Soft Matter

Sprache

eng

Country

England

Paginierung

5554 - 5564

Datum der Veröffentlichung

2018

Status

Published

Datum, an dem der Datensatz öffentlich gemacht wurde

2018

Titel

Coupling between criticality and gelation in "sticky" spheres: a structural analysis.

Sub types

Journal Article

Ausgabe der Zeitschrift

14

Datenquelle: PubMed

Abstract

We combine experiments and simulations to study the link between criticality and gelation in sticky spheres. We employ confocal microscopy to image colloid-polymer mixtures, and Monte Carlo simulations of the square-well (SW) potential as a reference model. To this end, we map our experimental samples onto the SW model. We find excellent structural agreement between experiments and simulations, both for locally favored structures at the single particle level and large-scale fluctuations at criticality. We follow in detail the rapid structural change of the critical fluid when approaching the gas-liquid binodal and highlight the role of critical density fluctuations for this structural crossover. Our results link the arrested spinodal decomposition to long-lived energetically favored structures, which grow even away from the binodal due to the critical scaling of the bulk correlation length and static susceptibility.

Autoren

David Richard
James Hallett
Thomas Speck
C Patrick Royall

Autoren-URL

http://arxiv.org/abs/1802.09481v1

Zeitschrift

Soft Matter

Schlüsselwörter

cond-mat.soft
cond-mat.soft

Paginierung

5554

Datum der Veröffentlichung

2018

Herausgeber URL

http://dx.doi.org/10.1039/C8SM00389K

Datum der Datenerfassung

2018

Datum, an dem der Datensatz öffentlich gemacht wurde

2018

Titel

Coupling between criticality and gelation in "sticky" spheres: A structural analysis

Ausgabe der Zeitschrift

14

Files

1802.09481v1.pdf

Datenquelle: arXiv

Coupling between criticality and gelation in "sticky" spheres: a structural analysis

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