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Three-Dimensional Mid-Air Acoustic Manipulation by Ultrasonic Phased Arrays

Figure 2

Phased array modules.

(Left) The phased array modules are operated by a computer via USB. (Middle) Each driving circuit board consists of three components; USB I/F, FPGA, and Driver ICs. (Right) Each phased array module has 285 ultrasonic transducers.

Figure 2

doi: https://doi.org/10.1371/journal.pone.0097590.g002