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Fitted plasmon resonance energies (E0) and FWHM linewidths (γ) derived from the EELS and CL data (Fig. 2a, b)
| EELS (200 keV) | CL (20 keV) | |||
|---|---|---|---|---|
| E0 (eV) | γ (eV) | E0 (eV) | γ (eV) | |
| Tip I (red) | 1.44 | 0.40 | 1.82 | 0.16 |
| Tip II (blue) | 1.68 | 0.36 | 1.72 | 0.27 |
| Tip III (orange) | 1.85 | 0.33 | 1.95 | 0.22 |
| Tip IV (purple) | 1.98 | 0.44 | 2.06 | 0.24 |
| Core (green) | – | – | 2.35 | 0.25 |
