Figure 3

(a) Droplet deforming process. (b) Droplet deformation index vs. time. Q1 = 0.05 mL/h, Q2 = 1.2 mL/h. (c) Zoom-in of the trough areas in (b). Time zero is the time instance when the rear of the droplet reaches zero point labeled in Fig. 1. Error bars indicate the positions of t0.