The role of vibration amplitude in acoustic separation of nanopowders

The regularities of the acoustic methods of nanopowders separation - redistribution of particles into nodes and wave antinodes on the surface of a transversely oscillating plate areconsidered. The dependence of the characteristic size of particle separation on the amplitude of oscillations is revealed. The regularities open the possibility of applying acoustic separation of ultrafine materials in a gas environment without a liquid. Separation at low frequencies allows the use of large vibrational surfaces, changing the frequency and amplitude of oscillations helps to regulate the particle size in the separated fractions. This makes it possible to obtain nanopowders with specified particle sizes and increase the efficiency of their application in materials science and other fields.