Patterns in Drying Water Films
When a thin water film evaporates from a clean cleaved mica substrate, two films of different thickness can coexist, one of them being stable and the other metastable. As the evaporation proceeds, a phase transition occurs between them. The edge between the two films becomes unstable and the patterns which develop are reminiscent of diffusion-limited solidification and viscous fingering. Experimental results and a theory are presented. The theory suggests that remaining drops evaporate in an unusual manner, whereby the largest drops evaporate fastest. This behavior was confirmed.
Unable to display preview. Download preview PDF.