Droplet breakage

As a liquid bath is perturbed, at a particular acceleration standing waves, called Faraday waves, will appear on the whole surface of the bath. As acceleration increases beyond the Faraday threshold acceleration, the amplitude of the Faraday waves becomes sufficiently large to form cylindrical structures. The amplitude of the Faraday waves grows with increasing forcing acceleration. When the amplitude becomes comparable to the Faraday wavelength, the waves spike and break up into droplets. Droplet ejection is a continuous process that occurs in waves due to the restoring forces, either surface tension effects or gravitation effects. This behaviour, similar to the Rayleigh-Taylor instability, was reported and rationalised by Goodridge et al.