Electric lamp or space discharge component or device manufacturi – Process – Electrode making
Patent
1997-12-10
1999-08-31
Ramsey, Kenneth J.
Electric lamp or space discharge component or device manufacturi
Process
Electrode making
445 24, H01J 902
Patent
active
059445734
ABSTRACT:
A process for depositing diamond crystals onto a field emission cathode. The process involves providing a cathode having a substrate, a gate layer and a plurality of emitters electrically insulated from the gate layer. An electric bias is applied to the gate layer and a ground potential is applied to the emitters. A heat source is positioned adjacent the cathode, and the cathode is exposed to a field of ions for a sufficient period to at least partially clean the emitters. A carbon containing gas is added to the atmosphere adjacent to the cathode such that carbon ions are dissociated from the gas and deposited on the emitters to form a "soot". The temperature of the cathode is then adjusted to a level which allows formation of diamond film.
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Kusner Robert E.
Mearini Gerald T.
BAV Technologies, Ltd.
Ramsey Kenneth J.
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