Bubble, bubble, toil and … actually not too much trouble.
Check out these ball bearings covered in a superhydrophobic coating, which allows the water to boil without the formation of violent bubbles. You know how when water droplets hit a hot pan, they skim across its surface? That’s because they form a layer of water vapor that provides them with a “pad” of sorts.
This superhydrophobic coating on these superheated balls is doing a similar thing, preventing the formation of microbubbles that would normally lead to lots of fizzy, boiling action. Instead an even layer of water vapor is created and neatly floats away.
(via SciTech Daily)