Liebchen, B. ; Cates, M. E. ; Marenduzzo, D. (2016)
Pattern formation in chemically interacting active rotors with self-propulsion.
In: Soft Matter, 12 (35)
doi: 10.1039/C6SM01162D
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We demonstrate that active rotations in chemically signalling particles, such as autochemotactic E. coli close to walls, create a route for pattern formation based on a nonlinear yet deterministic instability mechanism. For slow rotations, we find a transient persistence of the uniform state, followed by a sudden formation of clusters contingent on locking of the average propulsion direction by chemotaxis. These clusters coarsen, which results in phase separation into a dense and a dilute region. Faster rotations arrest phase separation leading to a global travelling wave of rotors with synchronized roto-translational motion. Our results elucidate the physics resulting from the competition of two generic paradigms in active matter, chemotaxis and active rotations, and show that the latter provides a tool to design programmable self-assembly of active matter, for example to control coarsening.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2016 |
| Autor(en): | Liebchen, B. ; Cates, M. E. ; Marenduzzo, D. |
| Art des Eintrags: | Bibliographie |
| Titel: | Pattern formation in chemically interacting active rotors with self-propulsion |
| Sprache: | Englisch |
| Publikationsjahr: | 8 August 2016 |
| Verlag: | The Royal Society of Chemistry |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Soft Matter |
| Jahrgang/Volume einer Zeitschrift: | 12 |
| (Heft-)Nummer: | 35 |
| DOI: | 10.1039/C6SM01162D |
| Kurzbeschreibung (Abstract): | We demonstrate that active rotations in chemically signalling particles, such as autochemotactic E. coli close to walls, create a route for pattern formation based on a nonlinear yet deterministic instability mechanism. For slow rotations, we find a transient persistence of the uniform state, followed by a sudden formation of clusters contingent on locking of the average propulsion direction by chemotaxis. These clusters coarsen, which results in phase separation into a dense and a dilute region. Faster rotations arrest phase separation leading to a global travelling wave of rotors with synchronized roto-translational motion. Our results elucidate the physics resulting from the competition of two generic paradigms in active matter, chemotaxis and active rotations, and show that the latter provides a tool to design programmable self-assembly of active matter, for example to control coarsening. |
| 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: | 27 Mai 2019 13:10 |
| Letzte Änderung: | 19 Aug 2020 10:55 |
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