Spontaneous autophoretic motion of isotropic particles - Archive ouverte HAL Access content directly
Journal Articles Physics of Fluids Year : 2013

Spontaneous autophoretic motion of isotropic particles

(1) , (2, 2) , (3)
1
2
3

Abstract

Suspended colloidal particles interacting chemically with a solute can self-propel by autophoretic motion when they are asymmetrically patterned (Janus colloids). Here we demonstrate theoretically that such anisotropy is not necessary for locomotion and that the nonlinear interplay between surface osmotic flows and solute advection can produce spontaneous and self-sustained motion of isotropic particles. Solving the classical autophoretic framework for isotropic particles, we show that, for given material properties, there exists a critical particle size (or Peclet number) above which spontaneous symmetry-breaking and autophoretic motion occur. A hierarchy of instabilities is further identified for quantized critical Peclet numbers. (C) 2013 AIP Publishing LLC.
Fichier principal
Vignette du fichier
14810749.pdf (1.33 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Loading...

Dates and versions

hal-00996484 , version 1 (02-06-2014)

Identifiers

Cite

Sebastien Michelin, Eric Lauga, Denis Bartolo. Spontaneous autophoretic motion of isotropic particles. Physics of Fluids, 2013, 25 (6), pp.061701. ⟨10.1063/1.4810749⟩. ⟨hal-00996484⟩
169 View
401 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More