Convective rolls and hydrothermal waves in evaporating sessile drops.

  title={Convective rolls and hydrothermal waves in evaporating sessile drops.},
  author={George Karapetsas and Omar K. Matar and Prashant Valluri and Khellil Sefiane},
  journal={Langmuir : the ACS journal of surfaces and colloids},
  volume={28 31},
Recent experiments on the evaporation of sessile droplets have revealed the spontaneous formation of various patterns including the presence of hydrothermal waves. These waves had previously been observed, in the absence of evaporation, in thin liquid layers subjected to an imposed, uniform temperature gradient. This is in contrast to the evaporating droplet case wherein these gradients arise naturally due to evaporation and are spatially and temporally varying. In the present paper, we present… CONTINUE READING