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@ARTICLE{Sukhov:865670,
author = {Sukhov, Alexander and Ziegler, Sebastian and Xie, Qingguang
and Trosman, Oleg and Pande, Jayant and Grosjean, Galien and
Hubert, Maxime and Vandewalle, Nicolas and Smith,
Ana-Sunčana and Harting, Jens},
title = {{O}ptimal motion of triangular magnetocapillary swimmers},
journal = {The journal of chemical physics},
volume = {151},
number = {12},
issn = {1089-7690},
address = {Melville, NY},
publisher = {American Institute of Physics},
reportid = {FZJ-2019-05012},
pages = {124707 -},
year = {2019},
abstract = {A system of ferromagnetic particles trapped at a
liquid-liquid interface and subjected to a set of magnetic
fields (magnetocapillary swimmers) is studied numerically
using a hybrid method combining the pseudopotential lattice
Boltzmann method and the discrete element method. After
investigating the equilibrium properties of a single, two,
and three particles at the interface, we demonstrate a
controlled motion of the swimmer formed by three particles.
It shows a sharp dependence of the average center-of-mass
speed on the frequency of the time-dependent external
magnetic field. Inspired by experiments on magnetocapillary
microswimmers, we interpret the obtained maxima of the
swimmer speed by the optimal frequency centered around the
characteristic relaxation time of a spherical particle. It
is also shown that the frequency corresponding to the
maximum speed grows and the maximum average speed decreases
with increasing interparticle distances at moderate swimmer
sizes. The findings of our lattice Boltzmann simulations are
supported by bead-spring model calculations},
cin = {IEK-11 / JARA-HPC},
ddc = {530},
cid = {I:(DE-Juel1)IEK-11-20140314 / $I:(DE-82)080012_20140620$},
pnm = {121 - Solar cells of the next generation (POF3-121) /
Dynamics of complex fluids $(jiek11_20161101)$},
pid = {G:(DE-HGF)POF3-121 / $G:(DE-Juel1)jiek11_20161101$},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:31575188},
UT = {WOS:000488830300051},
doi = {10.1063/1.5116860},
url = {https://juser.fz-juelich.de/record/865670},
}