on front   Spectrophotometric film thickness measurement  |  
  | 
        
        | Materials | 
            silicon nitride | 
            
            | Measurement aspect | 
            thickness | 
            
            | Measurement unit | 
            Ang | 
            
            | Refractive index | 
            1 .. 4 | 
            
            | Sides inspected The sides of the wafer inspected by the process  | 
            either | 
            
            | Thickness | 
            0 .. 5 µm | 
            
            
            | Wafer size | 
            
 | 
            
            
            
            | Equipment | 
            Nanospec | 
            
            
            
              | Equipment characteristics: | 
            
            | Batch sizes | 
            100 mm: 1, 125 mm: 1, 150 mm: 1 | 
            
            | MOS clean | 
            no | 
            
            | Piece dimension Range of wafer piece dimensions the equipment can accept  | 
            2 .. 150 mm | 
            
            | Piece geometry Geometry of wafer pieces the equipment can accept  | 
            circular, irregular, other, rectangular, triangular shard | 
            
            | Piece thickness Range of wafer piece thickness the equipment can accept  | 
            200 .. 1000 µm | 
            
            | Wafer geometry Types of wafers this equipment can accept  | 
            1-flat, 2-flat, no-flat, notched | 
            
            | Wafer materials List of wafer materials this tool can accept (not list of all materials, just the wafer itself).  | 
            Pyrex (Corning 7740), quartz (fused silica), silicon, silicon on insulator | 
            
            | Wafer thickness List or range of wafer thicknesses the tool can accept  | 
            200 .. 1000 µm |