Apparatus for applying coatings

摘要

An apparatus for applying coatings to very small objects which includes levitating the objects in an environment established for vapor deposition or sputtering in such a way that a uniform coating can be applied. The design includes a permanent magnet and a retaining diaphragm together with a variable frequency oscillator and amplifier to achieve vibrations of the diaphragm during the coating operation in such magnitude as to keep the selected particles suspended above the diaphragm to expose the entire surface to the coating being applied.