Optimization of Isotropic Plasma Etch in PT-DSE for GOPHER Process- Final Presentation PDF File: Optimization of Isotropic Plasma Etch in PT-DSE for GOPHER Process- Final Presentation This should be displaying Optimization of Isotropic Plasma Etch in PT-DSE for GOPHER Process- Final Presentation inline. If it's not, look to see if your browser is set to automatically download pdf files.