Movie S1.

Dot-like pressure node configurations. This movie corresponds to Fig. S1A. Here, 10-μm-diameter polystyrene beads are pushed to form the dot-array pressure node configuration using input signals of different frequency (power along horizontal direction = 30 mW, frequency along horizontal direction = 13.35 MHz, power along vertical direction = 30 mW, and frequency along vertical direction = 13.45 MHz). The movie is in real time.