Negative Interfacial Tension in Phase-Separated Active Brownian Particles

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • Julian Bialke
  • Jonathan T Siebert
  • Hartmut Loewen
  • Thomas Speck
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000359947900007&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1103/PhysRevLett.115.098301
eISSN
1079-7114
Externe Identifier
  • Clarivate Analytics Document Solution ID: CP5TQ
  • PubMed Identifier: 26371685
ISSN
0031-9007
Ausgabe der Veröffentlichung
9
Zeitschrift
PHYSICAL REVIEW LETTERS
Artikelnummer
ARTN 098301
Datum der Veröffentlichung
2015
Status
Published
Titel
Negative Interfacial Tension in Phase-Separated Active Brownian Particles
Sub types
  • Article
Ausgabe der Zeitschrift
115

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Autoren
  • Julian Bialké
  • Jonathan T Siebert
  • Hartmut Löwen
  • Thomas Speck
DOI
10.1103/physrevlett.115.098301
eISSN
1079-7114
ISSN
0031-9007
Ausgabe der Veröffentlichung
9
Zeitschrift
Physical Review Letters
Sprache
en
Artikelnummer
098301
Online publication date
2015
Status
Published online
Herausgeber
American Physical Society (APS)
Herausgeber URL
http://dx.doi.org/10.1103/physrevlett.115.098301
Datum der Datenerfassung
2017
Titel
Negative Interfacial Tension in Phase-Separated Active Brownian Particles
Ausgabe der Zeitschrift
115

Datenquelle: Crossref

Abstract
We study numerically a model for active suspensions of self-propelled repulsive particles, for which a stable phase separation into a dilute and a dense phase is observed. We exploit the fact that for nonsquare boxes a stable "slab" configuration is reached, in which interfaces align with the shorter box edge. Evaluating a recent proposal for an intensive active swimming pressure, we demonstrate that the excess stress within the interface separating both phases is negative. The occurrence of a negative tension together with stable phase separation is a genuine nonequilibrium effect that is rationalized in terms of a positive stiffness, the estimate of which agrees excellently with the numerical data. Our results challenge effective thermodynamic descriptions and mappings of active Brownian particles onto passive pair potentials with attractions.
Addresses
  • Institut für Theoretische Physik II, Heinrich-Heine-Universität, D-40225 Düsseldorf, Germany.
Autoren
  • Julian Bialké
  • Jonathan T Siebert
  • Hartmut Löwen
  • Thomas Speck
DOI
10.1103/physrevlett.115.098301
eISSN
1079-7114
Externe Identifier
  • PubMed Identifier: 26371685
Funding acknowledgements
  • Deutsche Forschungsgemeinschaft: LO 418/17-1
  • Deutsche Forschungsgemeinschaft: SP 1382/3-1
Open access
false
ISSN
0031-9007
Ausgabe der Veröffentlichung
9
Zeitschrift
Physical review letters
Sprache
eng
Medium
Print-Electronic
Online publication date
2015
Paginierung
098301
Datum der Veröffentlichung
2015
Status
Published
Datum der Datenerfassung
2015
Titel
Negative Interfacial Tension in Phase-Separated Active Brownian Particles.
Sub types
  • Journal Article
Ausgabe der Zeitschrift
115

Datenquelle: Europe PubMed Central

Abstract
We study numerically a model for active suspensions of self-propelled repulsive particles, for which a stable phase separation into a dilute and a dense phase is observed. We exploit the fact that for nonsquare boxes a stable "slab" configuration is reached, in which interfaces align with the shorter box edge. Evaluating a recent proposal for an intensive active swimming pressure, we demonstrate that the excess stress within the interface separating both phases is negative. The occurrence of a negative tension together with stable phase separation is a genuine nonequilibrium effect that is rationalized in terms of a positive stiffness, the estimate of which agrees excellently with the numerical data. Our results challenge effective thermodynamic descriptions and mappings of active Brownian particles onto passive pair potentials with attractions.
Autoren
  • Julian Bialké
  • Jonathan T Siebert
  • Hartmut Löwen
  • Thomas Speck
Autoren-URL
https://www.ncbi.nlm.nih.gov/pubmed/26371685
DOI
10.1103/PhysRevLett.115.098301
eISSN
1079-7114
Ausgabe der Veröffentlichung
9
Zeitschrift
Phys Rev Lett
Sprache
eng
Country
United States
Paginierung
098301
Datum der Veröffentlichung
2015
Status
Published
Datum, an dem der Datensatz öffentlich gemacht wurde
2015
Titel
Negative Interfacial Tension in Phase-Separated Active Brownian Particles.
Sub types
  • Journal Article
Ausgabe der Zeitschrift
115

Datenquelle: PubMed

Abstract
We study numerically a model for active suspensions of self-propelled repulsive particles, for which a stable phase separation into a dilute and a dense phase is observed. We exploit that for non-square boxes a stable "slab" configuration is reached, in which interfaces align with the shorter box edge. Evaluating a recent proposal for an intensive active swimming pressure, we demonstrate that the excess stress within the interface separating both phases is negative. The occurrence of a negative tension together with stable phase separation is a genuine non-equilibrium effect that is rationalized in terms of a positive stiffness, the estimate of which agrees excellently with the numerical data. Our results challenge effective thermodynamic descriptions and mappings of active suspensions onto passive pair potentials with attractions.
Autoren
  • Julian Bialké
  • Hartmut Löwen
  • Thomas Speck
Autoren-URL
http://arxiv.org/abs/1412.4601v1
Zeitschrift
Phys. Rev. Lett.
Schlüsselwörter
  • cond-mat.stat-mech
  • cond-mat.stat-mech
  • cond-mat.soft
Paginierung
098301
Datum der Veröffentlichung
2014
Herausgeber URL
http://dx.doi.org/10.1103/PhysRevLett.115.098301
Datum der Datenerfassung
2014
Datum, an dem der Datensatz öffentlich gemacht wurde
2014
Titel
Negative interfacial tension in phase-separated active suspensions
Ausgabe der Zeitschrift
115

Files

1412.4601v1.pdf

Datenquelle: arXiv

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