The ultrasonic working of a disperse system depends on the power of the sound energy flow, the frequency of the ultrasonic wave, the temperature and, especially, on the time of the sonic. Ultrasound forces far exceed the forces of interaction and repulsion of nanoparticles. In the process of sonication, you will not have an equilibrium system (process). After exposure to ultrasound, the disperse system achieves equilibrium in accordance with the laws of equilibrium thermodynamics and kinetics. If you take the standard dispersion, the standard ultrasound unit, the standard time of sonication and at a constant temperature and measure the size distribution of nanoparticles, you can get some results. They will be different for another installation and for another system.

Yuri Mirgorod thanks Sir,