Figure 5
From: Directional Movement of Droplets in Grooves: Suspended or Immersed?
Overlaid images of the sequential meniscus movement.
The images captured at t = 0.8 s and 1.6 s are overlaid onto the t = 0 s image for comparison. The white area indicates the local contact line movement. The upper and lower meniscuses are magnified by 2 and 4 times for clarity. At 0.8 s, the upper meniscus advances due to the increased droplet volume, while the lower meniscus stays fixed. At 1.6 s, the upper meniscus continues to move upward and the lower meniscus starts to move upward, driving the droplet away from the groove bottom. The upper and lower meniscuses move in unison. The scale bar denotes 0.5 mm.
