- TL;DR Summary
- Water driplets (fog, mist) size can be manipulated using ultrasonic frequency such that higher frequencies create smaller diameter particles.
I need to know how to predict particle size of a water driplet produced by a given ultrasonic frequency? For example, an ultrasonic fogger will create ~5 micron water driplets at a frequency of 1.75 MHz. I do know that the higher the frequency the smaller the driplet diameter. How is this relationship described mathematically and what is the physics for how mechanical vibrations actually generate micron-sized particles?