Jet milling is a process used to reduce the size of particles by using high-velocity jets of air or steam. In this method, materials are fed into a milling chamber where they collide with each other and the chamber walls, breaking them down into finer particles. This technique is commonly used in industries such as pharmaceuticals and food processing, where precise particle size is crucial. The main advantage of jet milling is that it produces very fine powders without introducing heat, which can alter the properties of sensitive materials. Additionally, the process is efficient and can handle a wide range of materials, including ceramics, metals, and polymers.