Figure 4.

(a) Gravity-driven system for the generation of monodisperse droplets. The continuous phase (CP) is supplied from a wide container such that the rate is constant over the course of the experiment. By contrast, the dispersed phase (DP) is supplied from a tall and narrow container such that the flow rate significantly decreases with time. (b) While the distance between droplets significantly increases over the course of the experiment (blue diamonds), the length of the droplets (red circles) is nearly independent of the pressure head, H_d. The error bars indicate the standard deviation obtained by measuring the length and distance of at least 10 droplets.