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Geometric capture and escape of a microswimmer colliding with an obstacle
(Royal Society of ChemistrySoft Matter, 2015-03-09)
Motivated by recent experiments, we consider the hydrodynamic capture of a microswimmer near a stationary spherical obstacle.
Simulations of model equations show that a swimmer approaching a small spherical colloid is ...
Geometric pumping in autophoretic channels
(Royal Society of ChemistrySoft Matter, 2015-05-07)
Many microfluidic devices use macroscopic pressure differentials to overcome viscous friction and generate flows in microchannels.
In this work, we investigate how the chemical and geometric properties of the channel walls ...
A regularised singularity approach to phoretic problems
(SpringerThe European Physical Journal E, 2015-12-28)
An efficient, accurate, and flexible numerical method is proposed for the solution of the swimming problem of one or more autophoretic particles in the purely diffusive limit. The method relies on successive boundary element ...
Propulsion of Bubble-Based Acoustic Microswimmers
(American Physical SocietyPhysical Review Applied, 2015-12-29)
Acoustic microswimmers present a great potential for microfluidic applications and targeted drug delivery. Here, we introduce armored microbubbles (size range, 10–20 μm) made by three-dimensional microfabrication, which ...
Small-amplitude swimmers can self-propel faster in viscoelastic fluids
(ElsevierJournal of Theoretical Biology, 2015-07-08)
Many small organisms self-propel in viscous fluids using travelling wave-like deformations of their bodies or appendages. Examples include small nematodes moving through soil using whole-body undulations or spermatozoa ...