Triple Leidenfrost Effect: Preventing Coalescence of Drops on a Hot Plate

@article{PachecoVzquez2021TripleLE,
  title={Triple Leidenfrost Effect: Preventing Coalescence of Drops on a Hot Plate},
  author={F. Pacheco-V{\'a}zquez and Ren{\'e} Ledesma-Alonso and J. L. Palacio-Rangel and Florian Moreau},
  journal={Physical Review Letters},
  year={2021}
}
We report on the collision-coalescence dynamics of drops in Leidenfrost state using liquids with different physicochemical properties. Drops of the same liquid deposited on a hot concave surface coalesce practically at contact, but when drops of different liquids collide, they can bounce several times before finally coalescing when the one that evaporates faster reaches a critical size, of the order of the capillary length. The bouncing dynamics is produced because the drops are not only in… 
1 Citations

Figures and Tables from this paper

References

SHOWING 1-10 OF 62 REFERENCES
Leidenfrost drops
A Leidenfrost drop forms when a volatile liquid is brought in contact with a very hot solid. Then, a vapor film comes in between the solid and the drop, giving to the latter the appearance of a
Leidenfrost droplet trampolining
TLDR
It is found that the continuously draining vapor cushion initiates and fuels Leidenfrost trampolining by inducing ripples on the droplet bottom surface, which translate into pressure oscillations and induce self-sustained periodic vertical droplet bouncing over a broad range of experimental conditions.
Cavity formation by the impact of Leidenfrost spheres
Abstract We report observations of cavity formation and subsequent collapse when a heated sphere impacts onto a liquid pool. When the sphere temperature is much greater than the boiling point of the
Stabilization of Leidenfrost vapour layer by textured superhydrophobic surfaces
TLDR
Topological texture on superhydrophobic materials is critical in stabilizing the vapour layer and thus in controlling—by heat transfer—the liquid–gas phase transition at hot surfaces, and can potentially be applied to control other phase transitions.
A ratchet trap for Leidenfrost drops
Abstract The Leidenfrost effect occurs when a drop of liquid (or a sublimating solid) is levitated above a sufficiently hot surface through the action of an insulating vapour layer flowing from its
Self-propelled jumping drops on superhydrophobic surfaces
We report a self-propelled jumping phenomenon for coalescing drops on superhydrophobic surfaces. The spontaneous motion is powered by surface energy released upon coalescence. On a horizontal,
Temperature-Induced Coalescence of Colliding Binary Droplets on Superhydrophobic Surface
TLDR
The findings in this study can be extended to collision of droplets under other conditions where control of the droplet temperature is feasible, and will also be beneficial to applications that involve droplet collision.
Collision between an ethanol drop and a water drop
The collision between a water drop and an ethanol drop was studied. In a binary collision between unlike miscible drops with a large surface tension difference, an “unbalanced-surface-force” (USF)
Collision between immiscible drops with large surface tension difference: diesel oil and water
The collision outcomes of immiscible drops with large surface tension difference, namely, a water drop and a diesel oil drop, were observed experimentally. In a near head-on collision between
Lifting a sessile oil drop from a superamphiphobic surface with an impacting one.
TLDR
This work investigates the dynamics of an oil drop impacting an identical sessile drop sitting on a superamphiphobic surface and describes two previously unexplored cases for sessiles drop liftoff, resulting from drop-on-drop impact.
...
1
2
3
4
5
...