Figure 1.

The temporal growth of the liquid bridge width (d) between two corn syrup drops coalescing in mineral oil in a Hele-Shaw cell of a depth of D = 1 mm [6,7,8]. This case belongs to the two-phase drop coalescence with two confining surfaces category shown in Figure 2. The viscosities of the drop and the outer liquid were μ_d = 20.6 mPa·s and μ_o = 19.1 mPa·s, respectively. Since the slope of the fitted red line was 0.86, the bridge growth followed a scaling law of d~t^0.86 in the early times of the coalescence. (Inset) Sequential top-view images of the growing liquid bridge. Time interval: 0.408 ms.