标题: Tooling [打印本页] 作者: 良哥 时间: 2011-11-25 11:19 标题: Tooling The tooling factor is determined experimentally by comparing the XTC's thickness reading with the actual thickness:
Tooling (%) = TFI x TM / TX
where TM = Actual thickness at substrate holder
TX = Thickness reading in the XTC
TFI = Initial Tooling Factor
The actual thickness is determined by profilometry. The term "tooling factor" derives from the fact that both distance and angle relative to the evaporation source affect the flux density. The XTC's sensor head is mounted below and to the side of the substrate holder and so does not receive the same deposition rate as the sample. Thus it is necessary to get a value for the actual the film thickness to correct to the particular geometry or "tooling". See mounting cover slips in holder for instructions on how to deposit a film for profilometry.