Apparatus and method for enhancing the uniform etching capability of an ion beam grid
A shaper for an ion beam gun has a thin, flat plate with a non-symmetrical profile including notches and tabs. The shaper is mounted to the surface of an ion beam grid having an array of holes. The shaper is oriented radially on the grid and covers some of the holes in the grid. The grid is mounted...
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| creator | KARMANIOLAS NICK K HWANG CHERNGYE ORTIZ URIEL GARCIA DAVID |
| description | A shaper for an ion beam gun has a thin, flat plate with a non-symmetrical profile including notches and tabs. The shaper is mounted to the surface of an ion beam grid having an array of holes. The shaper is oriented radially on the grid and covers some of the holes in the grid. The grid is mounted to an ion beam gun above a specimen that is rotated beneath the ion beam gun. The ion beam is filtered into smaller ion beamlets by the grid. The ion beamlets permeate the holes in the grid that are not covered by the shaper. The ion beamlets reach the specimen to etch it more uniformly than a grid that does not have a shaper. The shaper may be further optimized for a particular grid via a trial-and-error process to even further refine the uniformity of etching depth. |
| format | Patent |
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The shaper is mounted to the surface of an ion beam grid having an array of holes. The shaper is oriented radially on the grid and covers some of the holes in the grid. The grid is mounted to an ion beam gun above a specimen that is rotated beneath the ion beam gun. The ion beam is filtered into smaller ion beamlets by the grid. The ion beamlets permeate the holes in the grid that are not covered by the shaper. The ion beamlets reach the specimen to etch it more uniformly than a grid that does not have a shaper. 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| subjects | CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL GLASS INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE PHYSICS SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS |
| title | Apparatus and method for enhancing the uniform etching capability of an ion beam grid |
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