| 
        
        
            
              | Process characteristics: | 
            
            | Depth Depth of material removed by etch process  | 
             | 
            
            | Batch size | 
            1 | 
            
            | Etchant Solutions and their concentrations.  | 
            Cyantek CR-14 (acetic acid/ceric ammonium nitrate [8%:22%]) | 
            
            | Mask materials Materials that can be used to mask etching.  | 
            photoresist (G-line), photoresist (I-line) (category) | 
            
            | Material | 
            chromium | 
            
            | Selectivity Primary material removal rate divided by removal rates of secondary materials (i.e., factors by which primary material is removed faster than secondary materials)  | 
            chromium: 1 | 
            
            | Sides processed | 
            both | 
            
            | Temperature | 
            25 °C | 
            
            
            | Wafer size | 
            
 | 
            
            
            
            | Equipment | 
            Wet etch bench | 
            
            
            
              | Equipment characteristics: | 
            
            | Piece dimension Range of wafer piece dimensions the equipment can accept  | 
            1 .. 150 mm | 
            
            | Piece geometry Geometry of wafer pieces the equipment can accept  | 
            rectangular | 
            
            | 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 | 
            
            | Wafer holder Device that holds the wafers during processing.  | 
            teflon boat, teflon carrier | 
            
            | Wafer materials List of wafer materials this tool can accept (not list of all materials, just the wafer itself).  | 
            quartz (fused silica), Pyrex (Corning 7740), silicon on insulator, silicon, ceramic | 
            
            | Wafer thickness List or range of wafer thicknesses the tool can accept  | 
            200 .. 1000 µm |