Electron emitter and process of fabrication
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United States of America Patent
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-
Apr 10, 2007
Grant Date -
Dec 9, 2004
app pub date -
Jan 9, 2004
filing date -
Jun 6, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electron emitter is formed by in situ growth from the vapor on catalyst clusters that are adhered by an adhesion layer to a conductive electrode. The emitter comprises hemispheroidal nanofiber clusters that emit electrons at low field strengths and high current densities, producing bright light by the interaction of the electrons and a fluorescent and/or phosphorescent film on an anode spaced across an evacuated gap. The nanofibers may be grown such that the nanofiber clusters are entangled, restricting movement of individual nanofibers.
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