Figure 2
From: Emergence of different crystal morphologies using the coffee ring effect
Crystallization dynamics in a sessile droplet at t = (a) 4665 s, (b) 4981 s, (c) 5536 s, and (d) 5848 s. A left droplet is a 0.47 wt% droplet including the latex particles, on the other hand, a right droplet is a 0.47 wt% droplet without the latex particles. The yellow lines are eye guides for showing edge of the droplet. We find the macroscopic dewetting in the right droplet (b). (e) The crystal pattern at the initial contact line when the droplet does not contain latex particles. None of the crystals are observed at the center. (f) The morphology of the crystal when the droplet contains latex particles. Concentric circles are observed at the center of the dried droplet. Scale bar in (a–d) corresponds to 5.0 mm and scale bar in (e) and (f) correspond to 0.1 mm.
