Abstract
A method of layer-by-layer deposition of particles on a flat surface using acoustic levitation in air is proposed. An acoustic field for particle levitation is created using four phased emitter arrays. A field distribution is created that ensures the levitation of particles in a flat layer in a rectangular grid. Using a sound-transparent mesh, particles are fed into the levitation area. The use of an additional focused lattice makes it possible to remove excess particles from the levitation region. Particles are deposited by refocusing the side gratings to a lower height, followed by turning off the field.
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