The quartz monitor crystal is a essential for quartz crystal based measurement and control system. The crystal enables precise and repeatable thin film depositions.
Quartz crystal micro-balance (QCMs) is microelectronic devices used in vacuum deposition chambers to measure the thickness of thin film on substrates. This is done by using the frequency response provided by the quartz crystal during the coating process. This frequency change can be associated to the quantity of coating material on the crystal surface.