Capillary droplets on Leidenfrost micro-ratchets

  title={Capillary droplets on Leidenfrost micro-ratchets},
  author={Alvaro Marin and Daniel Arnaldo del Cerro and G. R. B. E. Romer and B. Pathiraj and A. J. Huis in 't Veld and Detlef Lohse},
  journal={Physics of Fluids},
Leidenfrost ratchets are structures with the ability of transporting liquid droplets when heated over the critical Leidenfrost temperature. Once this temperature is reached, the droplet levitates over the surface and moves in the direction marked by the slope of the ratchet at terminal velocities around 10 cm/s. Here we provide new experiments with micron-sized ratchets, which have been produced with picosecond pulse laser ablation. In the following work, we use a simple method to measure the… Expand

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