Fig. 4.

(a) Schematic of the combined pumping and mixing sharp-edged structures and the streamlines created via acoustic streaming. (b) Microscope image of the PDMS channel bonded to a glass slide. Two sets of mixing structures were preceded by seven pumping structures. (c) Comparison of the flow rates of reagents from the top and bottom inlets. (d–g) Fluorescent images of concurrently pumped DI water and fluorescein in the entryway, pumping region, pre-mixing region, and exit, respectively. Data represents average of n = 3 independent devices ± standard deviation.