This movie shows the optically driven pump and a probe particle. The channel
is 15 µm (height) by 15 µm (width) by 27 µm (length) and the
spinning vaterite particles are 6 µm in diameter. The probe particle is
driven from one end of the channel to the other by the fluid flow.
More at:
An optically driven pump for microfluidics
J. Leach, H. Mushfique, R. Di Leonardo, Padgett M., J. Cooper,
Tube