Dynamical clustering and phase separation in suspensions of self-propelled colloidal particles

Buttinoni, Ivo; Bialké, Julian; Kümmel, Felix; Löwen, Hartmut; Bechinger, Clemens; Speck, Thomas

Dynamical clustering and phase separation in suspensions of self-propelled colloidal particles

Dateien

Buttinoni_0-411242.pdfGröße: 1.18 MBDownloads: 378

Datum

2013

Autor:innen

Buttinoni, Ivo

Bialké, Julian

Kümmel, Felix

Löwen, Hartmut

Bechinger, Clemens

Speck, Thomas

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Physical Review Letters. 2013, 110(23), 238301. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.110.238301

Zusammenfassung

We study experimentally and numerically a (quasi) two dimensional colloidal suspension of self-propelled spherical particles. The particles are carbon-coated Janus particles, which are propelled due to diffusiophoresis in a near-critical water-lutidine mixture. At low densities, we find that the driving stabilizes small clusters. At higher densities, the suspension undergoes a phase separation into large clusters and a dilute gas phase. The same qualitative behavior is observed in simulations of a minimal model for repulsive self-propelled particles lacking any alignment interactions. The observed behavior is rationalized in terms of a dynamical instability due to the self-trapping of self-propelled particles.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

BUTTINONI, Ivo, Julian BIALKÉ, Felix KÜMMEL, Hartmut LÖWEN, Clemens BECHINGER, Thomas SPECK, 2013. Dynamical clustering and phase separation in suspensions of self-propelled colloidal particles. In: Physical Review Letters. 2013, 110(23), 238301. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.110.238301

BibTex

@article{Buttinoni2013-05-17T20:13:04ZDynam-39282,
  year={2013},
  doi={10.1103/PhysRevLett.110.238301},
  title={Dynamical clustering and phase separation in suspensions of self-propelled colloidal particles},
  number={23},
  volume={110},
  issn={0031-9007},
  journal={Physical Review Letters},
  author={Buttinoni, Ivo and Bialké, Julian and Kümmel, Felix and Löwen, Hartmut and Bechinger, Clemens and Speck, Thomas},
  note={Article Number: 238301}
}

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