SP-4 is a sputtering system specifically designed for Scanning Electron Microscopy (SEM) sample preparation in the CNS Nanofabrication cleanroom. The system is turbo-pumped with a small one-gun chamber. All valves and controls on SP-4 are manually activated and a clear understanding of basic vacuum technology is required. The sample is coated with Iridium material to facilitate good electrical conductance in the SEM chamber. No other materials or processes are available in SP-4, and qualification on the cleanroom SEM (SEM-10 Hitachi SU8230) is a prerequisite to SP-4 training and access. Please contact staff with questions or for training details.