Multi-ring Deposition Pattern of Drying Droplets.

  title={Multi-ring Deposition Pattern of Drying Droplets.},
  author={Mengmeng Wu and Xingkun Man and Masao Doi},
  journal={Langmuir : the ACS journal of surfaces and colloids},
  volume={34 32},
We propose a theory for the multi-ring pattern of the deposits that are formed when droplets of the suspension are dried on a substrate. Assuming a standard model for the stick-slip motion of the contact line, we show that as droplets evaporate many concentric rings of deposits are formed but are taken over by a solid-circle pattern in the final stage of drying. An analytical expression is given to indicate when the ring pattern changes to a solid-circle pattern during the evaporation process… 

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