Light forces the liquid in micro-channels

This is a cross-post from Optics.org: Light modulates electro-osmotic flow – but there is Particle Tracking Velocimetry 🙂

FE simulation
FE simulation

Fluid flow was analyzed using particle image velocimetry
Particle tracking

Not sure why the channel is inclined to the optical view, and why
particles are just marked, not tracked. Probably it’s solved. If not,
the ETH software could readily be applied to such particle images.

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