Specific Process Knowledge/Etch/DRIE-Pegasus/showerheadchange

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Comparison of processes before and after the change of showerhead in December 2014
Process Before After
Parameter change Wafer ID SEM images Comment Wafer ID SEM images
rebe g4-14 black silicon recipe S004592 Centre wafer S004592 centre.jpg S004592 Centre wafer File:S004 centre.jpg