Ultra Minor Metals Ltd (UMM) is one of the few companies that produces and sells osmium targets, which are mainly used in the field of vacuum coating.

  Vacuum coating is a solid surface with charged particles and negative electrons. When the solid surface atoms are hit by charged particles, it is possible to obtain sufficient kinetic energy and angular momentum and escape from the surface. This type of spot is called sputtering. Sputtering coating is a technology of sputtering a target with charged particles and negative electrons in a solid state, so that the atoms of the sputtering target are sputtered out and deposited on the surface of the substrate to produce a plastic film.
Vacuum sputtering coating According to the sputtering phenomenon above, sputtering is a condition in which the solid surface is bombarded with charged ions, causing the atoms on the solid surface to escape. Sputtering is the whole process in which the outgoing particles transmit kinetic energy to the solid surface, and the atoms on the solid surface volatilize due to digestion and absorption of kinetic energy.