Table 2 Turn-on electric field, enhancement factor, and number density of the samples
From: Field Emission Characteristics of the Structure of Vertically Aligned Carbon Nanotube Bundles
Sample | E to | Enhancement factor | Number density |
---|---|---|---|
(V μm−1) | (β) | (cm−2) | |
A | 2.0 | 1020 | 1.0 × 105 |
B | 2.8 | 840 | 4.9 × 104 |
C | 1.6 | 1770 | 1.6 × 105 |
D | 2.5 | 905 | 7.0 × 104 |