具体不知道怎么叫,不过在IC/5里面说明了它的功能 The IC/5’s automatic Z-ratio determination, or Auto Z,increases the accuracy of thickness and rate control and eliminates the need for the user to estimate the acoustic impedance (Z) ratio.3 When multiple materials are deposited on a crystal, the Z ratio changes as the ratio of the materials on the crystal changes. Therefore, the value for Z needs to be dynamic. Auto Z continually updates the Z ratio during the process. This feature is especially important for maintaining thickness and rate accuracy during the deposition of layered or alloyed materials onto a single crystal. |