Microfabricated diamond element and method of fabricating microfabricated diamond element
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United States of America Patent
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Dec 12, 2006
Grant Date -
Mar 25, 2004
app pub date -
Sep 15, 2003
filing date -
Sep 20, 2002
priority date (Note) -
Expired
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Abstract
A diamond electron emission element is provided with a substrate, and a plurality of quadrangular columns (microscopic projections) composed of diamond and with side faces of flat faces, which are arranged at equal intervals on the substrate. A top end face (horizontal section) is of a quadrangular shape having a length of long sides being a [nm] and a length of short sides being ka [nm], and a thin film of SiO.sub.2 is formed on a side face on the short-edge side. The length a [nm] of long sides and the length ka [nm] of short sides satisfy relational expressions of Formulae (1) and (2) below. C.sub.1=2a {square root over (1+k.sup.2)} (1) n.lamda.=C.sub.1 (2) C.sub.1: a distance [nm] of a lap in a situation where light generated inside each quadrangular column goes around on a specific circuit while being reflected on the side faces of the quadrangular column, n: an arbitrary positive integer, and .lamda.: an emission peak wavelength .lamda. [nm] of the diamond making the quadrangular columns.
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