Researchers from Aalto University have discovered that water droplets can be used as tiny bits of digital information. When water droplets are placed on highly water repellent surfaces and collide, they bounce off of each other like billiard balls. These collisions and bounces can be controlled and turned into computational logic.
Using superhydrophobic surfaces with tracks for guiding the droplets, the foundation for computing is created with the simple addition of water. Researchers are claiming this new form of computation will pave a way for non-electronic computers in the near future.