Article ID Journal Published Year Pages File Type
9572346 Applied Surface Science 2005 5 Pages PDF
Abstract
The field enhancement at a triple junction is theoretically investigated. For a long metal-dielectric-vacuum junction, the field behavior in the three media is described as a function of the geometry and the dielectric constant. It is found that the key factor determining the field enhancement is the ratio of the angles subtended by the dielectric and vacuum portions. This phenomenon can account for the field emission enhancement and the vacuum breakdown observed in experiments. The current result implies that the triple junction can be a new type of field emission source.
Related Topics
Physical Sciences and Engineering Chemistry Physical and Theoretical Chemistry
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