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Comparison of analytical enhancement factors (AEF) calculated for the surface‐enhanced Raman scattering (SERS) substrates in comparison to bare Al foil for the measurement of rhodamine 6G at 1064 nm excitation.
| Substrate | Wavelength (nm) | c R6G (ppm) | Peak area (a.u.) | AEF (103) |
|---|---|---|---|---|
| Al foil | 1064 | 1000 | 0.087 | – |
| AgNPL | 1064 | 0.1 | 0.096 | 11.1 |
| AuNP | 1064 | 1 | 0.039 | 0.4 |
| 4n SERS | 1064 | 0.1 | 0.040 | 4.6 |
