  Laplace pressure driven snap-off is a technique that is used to produce
droplets for emulsions and microfluidics purposes. Previous predictions of
droplet size have assumed a quasi-equilibrium low flow limit. We present a
simple model to predict droplet sizes over a wide range of flow rates,
demonstrating a rich landscape of droplet stability depending on droplet size
and growth rate. The model accounts for the easily adjusted experimental
parameters of geometry, interfacial tension, and the viscosities of both
phases.
