Figure 4
From: The onset of electrospray: the universal scaling laws of the first ejection
(Left) Numerical simulation of the droplet ejection for β = 5 and 60 and δμ = 5. The time was referenced to the instant when the jet breaks up. The color indicates the magnitude of the electric field (red/blue corresponds to high/low values of that quantity). Note that the time step in the first three frames is the same for the two cases. (Right) Experimental images of the first ejected droplets of 1-Octanol produced with 3000 kV. The four images correspond to the instants t = 0, 17.2, 21.5 and 30.1 μs. The sequence shows the first, second and the formation of the third droplet. The labels indicate the droplet number. The sharpness of the images is limited by both the low number of pixels (owing to the very high image acquisition speed) and the difficulties to get the optimum focus in such a local and fast event.
