Fig. 5.

Performance of standard microfluidic unit operations by using acoustically controlled droplet motion. (Upper Left) Schematic of branched-channel PDMS device with associated cavity linkages. (Upper Right) Channel layout with legend, illustrating the visual representation of 3 pressure states. Main pressure indicates areas where significant pressure is applied to induce droplet motion. Support pressure indicates areas where minimal pressure is applied to counter droplet motion. (Lower) Four sets of images depicting the standard fluidic unit operations of merging, transport, splitting, and sorting. Arrows on each image indicate ensuing droplet motion in response to acoustically generated pressures (linking image)