Scanning near field optical microscopy of gold nano-disc arrays fabricated by electron beam lithography and their application as surface enhanced Raman scattering substrates

- Gold nano-disc arrays were fabricated on glass substrates using electron beam lithography.
- SNOM imaging of the patterns in different geometries is reported.
- Polarization of the beam in the transmission mode has improves the resolution and contrast of the images.
- Application of these arrays as surface enhanced Raman scattering substrates is demonstrated.