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. 2018 Jul 5;8:10221. doi: 10.1038/s41598-018-28451-5

Figure 2.

Figure 2

Contactless transport and coalescence by controlling the acoustic potential. (a) Calculation results of an acoustic potential obtained by DPSM (a-1, L = 12 mm; a-2, L = 10 mm; a-3, L = 8 mm; a-4, L = 6 mm). (b) Calculation results of an acoustic potential at a pressure node (z = 3λ/4) (b-1, L = 12 mm; b-2, L = 10 mm; b-3, L = 8 mm; b-4, L = 6 mm). (c) Snapshots of levitation behavior when a pair of focal points is generated (c-1, L = 12 mm; c-2, L = 10 mm; c-3, L = 8 mm; c-4, L = 6 mm). (d) Snapshot of contactless coalescence of water droplets.