%0 Journal Article
%A Yang, Mingcheng
%A Wysocki, Adam
%A Ripoll, Marisol
%T Hydrodynamic simulations of self-phoretic microswimmers
%J Soft matter
%V 10
%N 33
%@ 1744-6848
%C Cambridge
%I Royal Society of Chemistry (RSC)
%M FZJ-2014-04103
%P 6208 -
%D 2014
%X 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/r2, 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/r3 and behave as neutral swimmers.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000340438600009
%$ pmid:25012361
%R 10.1039/C4SM00621F
%U https://juser.fz-juelich.de/record/154840