When droplets hit super hydrophobic powder, the powder fully encapsulates the droplet and “freezes” them into shapes that differ based on the fluid type and velocity.
- 25% glycerol droplet “freezing” into an ice-cream cone
- 25% glycerol droplet “freezing” into a tenpin shape
- a normal water droplet striking regular powder and rebounding partially covered
- a coated water droplet ejecting a satellite drop before “freezing” into place
- a “frozen” 25% glycerol droplet.
Sources: Videos from here and here. Footage and study from Jeremy Marston’s team at the King Abdullah University of Science and Technology.