Surface Enhanced Raman Scattering by 2D Photonic Crystals: Enhancement and Reproducibility

Surface enhanced Raman scattering effects are investigated for novel substrates based on a Gold coated photonic crystal structure with square lattice geometry. Enhancement factors of over 10 6 are presented for several different analytes, (measured with respect to signals from a flat Au surface) with chip to chip and sample to sample repeatability of 7% and 5% respectively.