Table 1 Statistics for apex radius and cone angle of gold nanotips corresponding to the composition of HCl and ethanol solution (Criterion of success is tip having apex radius below 100 nm).
HCl: Ethanol Ratio | Success Rate (%) | Radius of Curvature (nm) | Cone Angle (°) | ||
|---|---|---|---|---|---|
Average | Deviation | Average | Deviation | ||
HCl only | 49.1 | 53.7 | 29.1 | 54.9 | 16.7 |
3: 1 | 58.8 | 34.4 | 21.4 | 35.2 | 10.4 |
2: 1 | 66.7 | 43.0 | 21.6 | 68.5 | 29.2 |
1: 1 | 21.7 | 21.2 | 12.1 | 55.9 | 26.4 |
