Carbon film having shape suitable for field emission

Details Carbon film having shape suitable for field emission Carbon film having shape suitable for field emission

2006-08-09

2010-11-23

Patel, Ashok (Department: 2889)

Electric lamp and discharge devices

Discharge devices having a multipointed or serrated edge...

C313S336000, C313S351000, C313S495000

Reexamination Certificate

active

07839067

ABSTRACT:
A carbon film of the present invention has an elongated needle shape whose radius decreases toward a tip. The shape is, preferably, a shape in which a field concentration coefficient β in the Fowler-Nordheim equation is expressed by h/r where r denotes the radius in an arbitrary position and h denotes height from the arbitrary position to the tip.

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patent: 6-242439 (1994-09-01), None
patent: 10-223128 (1998-08-01), None
patent: 2005-332735 (2005-12-01), None

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