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Title: Fission and fusion scenarios for magnetic microswimmer clusters

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms13519· OSTI ID:1336247
 [1];  [2];  [1]
  1. Heinrich-Heine-Univ. Dusseldorf, Dusseldorf (Germany). Inst. fur Theoretische Physik II
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division

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.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); German Research Foundation (DFG)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1336247
Journal Information:
Nature Communications, Vol. 7, Issue 13519; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 47 works
Citation information provided by
Web of Science

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Cited By (23)

Clustering of Magnetic Swimmers in a Poiseuille Flow journal May 2018
Theory of active particle penetration through a planar elastic membrane journal August 2019
Microfluidic Magnetic Mixing at Low Reynolds Numbers and in Stagnant Fluids journal October 2019
Reconfigurable magnetic microrobot swarm: Multimode transformation, locomotion, and manipulation journal March 2019
Emergent hydrodynamic bound states between magnetically powered micropropellers journal January 2018
Self-assembly of active amphiphilic Janus particles journal December 2017
Multi-species dynamical density functional theory for microswimmers: Derivation, orientational ordering, trapping potentials, and shear cells journal August 2019
Magnetotactic bacteria in a droplet self-assemble into a rotary motor journal November 2019
Magnetic quadrupole assemblies with arbitrary shapes and magnetizations journal October 2019
Targeted assembly and synchronization of self-spinning microgears journal July 2018
Membrane penetration and trapping of an active particle journal February 2019
Controlling collective rotational patterns of magnetic rotors journal October 2019
Hierarchical collective motion of a mixture of active dipolar Janus particles and passive charged colloids in two dimensions journal February 2018
Nanoparticle‐Regulated Semiartificial Magnetotactic Bacteria with Tunable Magnetic Moment and Magnetic Sensitivity journal March 2019
Magnetic quadrupole assemblies with arbitrary shapes and magnetizations text January 2019
Emergent Hydrodynamic Bound States Between Magnetically Powered Micropropellers preprint January 2017
Targeted Assembly and Synchronization of Self-Spinning Microgears text January 2018
Membrane penetration and trapping of an active particle text January 2019
Magnetotactic bacteria in a droplet self-assemble into a rotary motor text January 2019
Theory of active particle penetration through a planar elastic membrane text January 2019
Multi-species dynamical density functional theory for microswimmers: derivation, orientational ordering, trapping potentials, and shear cells text January 2019
Self-assembly of active amphiphilic Janus particles text January 2021
Shaping the Assembly of Superparamagnetic Nanoparticles journal February 2019

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