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Title: Lattice-Boltzmann hydrodynamics of anisotropic active matter
Authors: de Graaf, Joost
Menke, Henri
Mathijssen, Arnold J.T.M.
Fabritius, Marc
Holm, Christian
Shendruk, Tyler N.
Issue Date: 2016
Publisher: © AIP
Citation: DE GRAAF, J. ... et al.,2016. Lattice-Boltzmann hydrodynamics of anisotropic active matter. The Journal of Chemical Physics, 144: 134106.
Abstract: A plethora of active matter models exist that describe the behavior of self-propelled particles (or swimmers), both with and without hydrodynamics. However, there are few studies that consider shape-anisotropic swimmers and include hydrodynamic interactions. Here, we introduce a simple method to simulate self-propelled colloids interacting hydrodynamically in a viscous medium using the lattice-Boltzmann technique. Our model is based on raspberry-type viscous coupling and a force/counter-force formalism, which ensures that the system is force free. We consider several anisotropic shapes and characterize their hydrodynamic multipolar flow field. We demonstrate that shape-anisotropy can lead to the presence of a strong quadrupole and octupole moments, in addition to the principle dipole moment. The ability to simulate and characterize these higher-order moments will prove crucial for understanding the behavior of model swimmers in confining geometries
Description: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in DE GRAAF, J. ... et al.,2016. Lattice-Boltzmann hydrodynamics of anisotropic active matter. The Journal of Chemical Physics, 144: 134106 and may be found at https://doi.org/10.1063/1.4944962.
Sponsor: J.d.G. acknowledges financial support by a NWO Rubicon Grant (No. #680501210). J.d.G. and C.H. thank the DFG Reuse of AIP Publishing content is subject to the terms: https://publishing.aip.org/authors/rights-and-permissions. Downloaded to IP: On: Fri, 08 Apr 2016 08:46:55 134106-9 de Graaf et al. J. Chem. Phys. 144, 134106 (2016) for funding through the SPP 1726 “Microswimmers—From Single Particle Motion to Collective Behavior.” A.J.T.M.M. and T.N.S. acknowledge financial support from an ERC Advanced Grant MiCE (No. 291234). T.N.S. thanks EMBO for funding through (No. ALTF181-2013)
Version: Published
DOI: 10.1063/1.4944962
URI: https://dspace.lboro.ac.uk/2134/36362
Publisher Link: https://doi.org/10.1063/1.4944962
ISSN: 0021-9606
Appears in Collections:Published Articles (Maths)

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