Electron emissive film

Details Electron emissive film Electron emissive film

1997-12-03

2000-07-11

Patel, Nimeshkumar D.

Electric lamp and discharge devices

Discharge devices having a multipointed or serrated edge...

313336, 313346R, 313351, 313495, H01J 102, H01J 116, H01J 1910, H01J 6304

Patent

active

060877650

ABSTRACT:
An electron-emissive film (170, 730) is made from graphite and has a surface defining a plurality of emissive clusters (100), which are uniformly distributed over the surface. Each of the emissive clusters (100) has dendrites (110) extending radially from a central point (120). Each of the dendrites (110) has a ridge (130), which has a radius of curvature of less than 10 nm. The graphene sheets (160) that form the dendrites (110) have a (002) lattice spacing within a range of 0.342-0.350 nanometers.

REFERENCES:
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patent: 4041346 (1977-08-01), Bursey et al.
patent: 4933108 (1990-06-01), Soredale
patent: 5726524 (1998-03-01), Debe
patent: 5772760 (1998-06-01), Gruen et al.
"A Carbon Nanotube Field-Emissiion Electron Source" by Walt A. de Heer, A. Chatelain, D. Ugarte; Science, vol. 270, Nov. 17, 1995, pp. 1179-1180.
"Unraveling Nanotubes: Field Emission from an Atomic Wire" by A.G. Rinzler, et al; Science, vol. 269, Sep. 15, 1995, pp. 1550-1553.

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