In this video we first describe fabrication and operation procedures of a surface acoustic wave (SAW) acoustic counterflow device. We then demonstrate an experimental setup that allows for both qualitative flow visualization and quantitative analysis of complex flows within the SAW pumping device.
Travagliati, M., Shilton, R., Beltram, F., Cecchini, M. Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics. J. Vis. Exp. (78), e50524, doi:10.3791/50524 (2013).