FIG. 3. (a) Temporal variations of the area-weighted mean radius hri of the condensate drops under ac-EW (Urms ¼ 150 V) with different electrode designs. (b) Variations of the average shedding radius hRshi with Urms under continuous ac-EW (circles: straight interdigitated electrodes; diamonds: zigzag interdigitated electrodes with l¼ 3000 lm) and under intermittent ac-EW (triangles: identical zigzag interdigitated electrodes). The intermittent ac-EW is achieved by switching the applied sinusoidal voltage on (50 s) and off (10 s) as shown in the inset. (c) Variations of the average shedding rate hfshi with Urms for continuous and intermittent ac-EW. (d) Variations of the average volumetric condensate removal rate h _vi with Urms for the different ac-EW conditions. The symbols in (b)–(d) represent identical EW conditions.
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