Figure 3.

(a) Comparison between Silmeco Ag substrates, and a range of other commercial substrates performed at this laboratory. Substrate 1: nanoparticle; Substrate 2: nanopillar; Substrate 3: laser fabricated with either Ag or Au. Data based on maximum intensity obtained from 1064 cm⁻¹ peak using 785 nm excitation. Laser power used was 0.06 mW; (b) SERS spectrum of 2NT after incubation on a range of substrates, showing prominent peak at 1064 relative cm⁻¹, which was used for all substrate comparisons. The Silmeco Ag substrate shows a very large increase Raman intensity due to plasmon resonance effects at 785 nm excitation and nanopillar leaning enhancements.