The principle of cotton candy drawing is rotating centrifugal force and rapid solidification. Sucrose is a granular cubic crystal. The molecules in sucrose crystals are arranged very neatly, and each molecule has a fixed position, just like a neatly parked car in a parking lot. However, once sucrose enters the cotton candy making machine, its molecular structure will change, and sucrose will become a very long filamentous substance, which will be intertwined like cotton.

Making: The marshmallow making machine is a machine like a big bowl. The center of the machine is a high-temperature heating chamber. Heat breaks the crystal structure and turns sugar into syrup. There are some holes smaller than granular sucrose in the heating chamber. When sugar rotates at high speed in the heating chamber, centrifugal force sprays syrup from small holes to the periphery of the "big bowl". Because the speed at which a liquid material solidifies under cold conditions is related to its volume, the smaller the volume, the faster it solidifies. Therefore. The researchers designed the holes in the heating cavity to be only 50 microns in diameter, and the syrup sprayed from the holes immediately condensed into solid sugar filaments without sticking together.