Hydrochemical interactions of phoretic particles: a regularized multipole framework

Abstract

Abstract

Clustering of self-thermophilic asymmetric dimers: the relevance of hydrodynamics

“…The combination of these interactions lead to a hydrodynamic-induced torque on neighbouring colloids and an overall attraction towards the rear back of the philic dimer. Note first that, this induced flow is significantly different from those exhibited by spherically symmetric Janus particles 36,43,69,70 calculated by simulation, analytical, and experimental approaches. Note also that although the flow field of these dimeric asymmetric swimmers resembles some aspects of hydrodynamic pullers 4 , the torque and side-back attraction makes that these dimers can not be classified as standard pullers.…”

Self-organization of active colloids mediated by chemical interactions

“…For constant or linear surface reaction kinetics in the absence of bulk reactions, the reaction-diffusion equation of a single chemical species in the presence of one or two active particles have been considered. [73][74][75][76][77][78] Mesoscopic particle-based 79 and other numerical methods 80,81 can be used to take into account full complex chemical dynamics as well as hydrodynamic interactions.…”

Interactions in active colloids

“…Other possible approaches to numerically study the combined hydrodynamic and phoretic interactions in ensembles of autophoretic active colloids have been formulated based on spectral expansions of the Laplace and Stokes equations [272,303] as well as on the force-coupling method (FCM) [304], which has been recently extended to the so-called diffusiophoretic FCM [305].…”