Thermionic emission device

Details Thermionic emission device Thermionic emission device

2011-03-29

2011-03-29

Williams, Joseph L (Department: 2889)

Electric lamp and discharge devices

Discharge devices having a thermionic or emissive cathode

C313S3460DC, C313S306000

Reexamination Certificate

active

07915798

ABSTRACT:
A thermionic emission device includes an insulating substrate, and one or more grids located thereon. Each grid includes a first, second, third and fourth electrode down-leads located on the periphery thereof, and a thermionic electron emission unit therein. The first and second electrode down-leads are parallel to each other. The third and fourth electrode down-leads are parallel to each other. The first and second electrode down-leads are insulated from the third and fourth electrode down-leads. The thermionic electron emission unit includes a first electrode, a second electrode, and a thermionic electron emitter. The first electrode and the second electrode are separately located and electrically connected to the first electrode down-lead and the third electrode down-lead respectively. The thermionic electron emitter includes at least one carbon nanotube wire.

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Cox et al., Thermionic emission from defective carbon nanotubes, Applied Physics Letters, Sep. 13, 2004, 2065-2067, vol. 85, No. 11.

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