The results show that the best field emission characteristic is measured with an enhancement factor of around 2118, and a turn-on field intensity of 6.3 V/m were obtained.

• 这表示在较低长度之下，增加奈米线的长度有助于提升其场发射特性，但是到了一定长度之后，此时继续的增加奈米线的长度将使得电场屏障效应增加，导致场发射特性随著长度的增加而衰减。