Liebchen, B. ; Marenduzzo, D. ; Pagonabarraga, I. ; Cates, M. E. (2015)
Clustering and Pattern Formation in Chemorepulsive Active Colloids.
In: Physical Review Letters, 115 (25)
doi: 10.1103/PhysRevLett.115.258301
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We demonstrate that migration away from self-produced chemicals (chemorepulsion) generates a generic route to clustering and pattern formation among self-propelled colloids. The clustering instability can be caused either by anisotropic chemical production, or by a delayed orientational response to changes of the chemical environment. In each case, chemorepulsion creates clusters of a self-limiting area which grows linearly with self-propulsion speed. This agrees with recent observations of dynamic clusters in Janus colloids (albeit not yet known to be chemorepulsive). More generally, our results could inform design principles for the self-assembly of chemorepulsive synthetic swimmers and/or bacteria into nonequilibrium patterns.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2015 |
| Autor(en): | Liebchen, B. ; Marenduzzo, D. ; Pagonabarraga, I. ; Cates, M. E. |
| Art des Eintrags: | Bibliographie |
| Titel: | Clustering and Pattern Formation in Chemorepulsive Active Colloids |
| Sprache: | Englisch |
| Publikationsjahr: | 16 Dezember 2015 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review Letters |
| Jahrgang/Volume einer Zeitschrift: | 115 |
| (Heft-)Nummer: | 25 |
| DOI: | 10.1103/PhysRevLett.115.258301 |
| Kurzbeschreibung (Abstract): | We demonstrate that migration away from self-produced chemicals (chemorepulsion) generates a generic route to clustering and pattern formation among self-propelled colloids. The clustering instability can be caused either by anisotropic chemical production, or by a delayed orientational response to changes of the chemical environment. In each case, chemorepulsion creates clusters of a self-limiting area which grows linearly with self-propulsion speed. This agrees with recent observations of dynamic clusters in Janus colloids (albeit not yet known to be chemorepulsive). More generally, our results could inform design principles for the self-assembly of chemorepulsive synthetic swimmers and/or bacteria into nonequilibrium patterns. |
| Freie Schlagworte: | publiziert |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Festkörperphysik (2021 umbenannt in Institut für Physik Kondensierter Materie (IPKM)) |
| Hinterlegungsdatum: | 28 Mai 2019 05:05 |
| Letzte Änderung: | 19 Aug 2020 10:59 |
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