Fig. 3

Droplet's interface instability. The sequence of three consecutive snapshots illustrating the evolution of the dense droplet for times t = 0.15 s (a), t = 0.3 s (b), and t = 0.4 s (c) after cessation of rotation. The interface between dilute (bright) and dense (dark) regions is shown in green line. Rotation frequency is 400 Hz. Dependence of the interface velocity V (green) on the interface curvature (χ) for the exploding droplet 0.2 s after cessation of rotation. d, e Dependence of the interface velocity V (dashed red) and the interface curvature χ (solid black) on the polar angle φ for the experimental data (d) and the data obtained from simulations (e). A noticeable correlation between V and χ is observed both in experiments and simulations. f Parametric dependence of the interface normal velocity V vs curvature χ for experimental data (blue diamonds) and simulations (red circles). Two lines are linear regression fits