TY  - JOUR
AU  - Yang, Mingcheng
AU  - Wysocki, Adam
AU  - Ripoll, Marisol
TI  - Hydrodynamic simulations of self-phoretic microswimmers
JO  - Soft matter
VL  - 10
IS  - 33
SN  - 1744-6848
CY  - Cambridge
PB  - Royal Society of Chemistry (RSC)
M1  - FZJ-2014-04103
SP  - 6208 -
PY  - 2014
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000340438600009
C6  - pmid:25012361
DO  - DOI:10.1039/C4SM00621F
UR  - https://juser.fz-juelich.de/record/154840
ER  -