Fission and fusion scenarios for magnetic microswimmer clusters
Abstract
Fission and fusion processes of particle clusters occur in many areas of physics and chemistry from subnuclear to astronomic length scales. Here we study fission and fusion of magnetic microswimmer clusters as governed by their hydrodynamic and dipolar interactions. Rich scenarios are found that depend crucially on whether the swimmer is a pusher or a puller. In particular a linear magnetic chain of pullers is stable while a pusher chain shows a cascade of fission (or disassembly) processes as the self-propulsion velocity is increased. Contrarily, magnetic ring clusters show fission for any type of swimmer. Moreover, we find a plethora of possible fusion (or assembly) scenarios if a single swimmer collides with a ringlike cluster and two rings spontaneously collide. Lastly, our predictions are obtained by computer simulations and verifiable in experiments on active colloidal Janus particles and magnetotactic bacteria.
- Authors:
-
- Heinrich-Heine-Univ. Dusseldorf, Dusseldorf (Germany). Inst. fur Theoretische Physik II
- Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); German Research Foundation (DFG)
- OSTI Identifier:
- 1336247
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Volume: 7; Journal Issue: 13519; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 36 MATERIALS SCIENCE
Citation Formats
Guzmán-Lastra, Francisca, Kaiser, Andreas, and Löwen, Hartmut. Fission and fusion scenarios for magnetic microswimmer clusters. United States: N. p., 2016.
Web. doi:10.1038/ncomms13519.
Guzmán-Lastra, Francisca, Kaiser, Andreas, & Löwen, Hartmut. Fission and fusion scenarios for magnetic microswimmer clusters. United States. https://doi.org/10.1038/ncomms13519
Guzmán-Lastra, Francisca, Kaiser, Andreas, and Löwen, Hartmut. Tue .
"Fission and fusion scenarios for magnetic microswimmer clusters". United States. https://doi.org/10.1038/ncomms13519. https://www.osti.gov/servlets/purl/1336247.
@article{osti_1336247,
title = {Fission and fusion scenarios for magnetic microswimmer clusters},
author = {Guzmán-Lastra, Francisca and Kaiser, Andreas and Löwen, Hartmut},
abstractNote = {Fission and fusion processes of particle clusters occur in many areas of physics and chemistry from subnuclear to astronomic length scales. Here we study fission and fusion of magnetic microswimmer clusters as governed by their hydrodynamic and dipolar interactions. Rich scenarios are found that depend crucially on whether the swimmer is a pusher or a puller. In particular a linear magnetic chain of pullers is stable while a pusher chain shows a cascade of fission (or disassembly) processes as the self-propulsion velocity is increased. Contrarily, magnetic ring clusters show fission for any type of swimmer. Moreover, we find a plethora of possible fusion (or assembly) scenarios if a single swimmer collides with a ringlike cluster and two rings spontaneously collide. Lastly, our predictions are obtained by computer simulations and verifiable in experiments on active colloidal Janus particles and magnetotactic bacteria.},
doi = {10.1038/ncomms13519},
journal = {Nature Communications},
number = 13519,
volume = 7,
place = {United States},
year = {Tue Nov 22 00:00:00 EST 2016},
month = {Tue Nov 22 00:00:00 EST 2016}
}
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