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Yang M, Wysocki A, Ripoll M. Hydrodynamic simulations of self-phoretic microswimmers. Soft Matter. 2014;10(33):6208-18doi: 10.1039/c4sm00621f.
Yang, M., Wysocki, A., & Ripoll, M. (2014). Hydrodynamic simulations of self-phoretic microswimmers. Soft matter, 10(33), 6208-18. https://doi.org/10.1039/c4sm00621f
Yang, Mingcheng, et al. "Hydrodynamic simulations of self-phoretic microswimmers." Soft matter vol. 10,33 (2014): 6208-18. doi: https://doi.org/10.1039/c4sm00621f
Yang M, Wysocki A, Ripoll M. Hydrodynamic simulations of self-phoretic microswimmers. Soft Matter. 2014 Sep 07;10(33):6208-18. doi: 10.1039/c4sm00621f. Epub 2014 Jul 11. PMID: 25012361.
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Soft Matter. 2014 Sep 07;10(33):6208-18. doi: 10.1039/c4sm00621f. Epub 2014 Jul 11.

Hydrodynamic simulations of self-phoretic microswimmers.

Soft matter

Mingcheng Yang, Adam Wysocki, Marisol Ripoll

Affiliations

  1. Theoretical Soft-Matter and Biophysics, Institute of Complex Systems, Forschungszentrum Jülich, 52425 Jülich, Germany. [email protected] [email protected].

PMID: 25012361 DOI: 10.1039/c4sm00621f

Abstract

A mesoscopic hydrodynamic model to simulate synthetic self-propelled Janus particles which is thermophoretically or diffusiophoretically driven is here developed. We first propose a model for a passive colloidal sphere which reproduces the correct rotational dynamics together with strong phoretic effect. This colloid solution model employs a multiparticle collision dynamics description of the solvent, and combines stick boundary conditions with colloid-solvent potential interactions. Asymmetric and specific colloidal surface is introduced to produce the properties of self-phoretic Janus particles. A comparative study of Janus and microdimer phoretic swimmers is performed in terms of their swimming velocities and induced flow behavior. Self-phoretic microdimers display long range hydrodynamic interactions with a decay of 1/r(2), which is similar to the decay of gradient fields generated by self-phoretic particle, and can be characterized as pullers or pushers. In contrast, Janus particles are characterized by short range hydrodynamic interactions with a decay of 1/r(3) and behave as neutral swimmers.

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