Highly Sensitive Surface Enhanced Raman Spectroscopy from Ag Nanoparticles Decorated Graphene Sheet

Figure 4

SEM images of GS decorated with morphologies of (a) spheric and (b) quasi cubic Ag NPs. (c) Corresponding SERS spectra of GS with Ag NPs decoration (blue one for quasi cubic and red one for spheric one) and without Ag NPs decoration (black one which has been amplified 20 times). Scale bar 100 nm.

(a) GS@spheric Ag NPs

(b) GS@quasi cubic Ag NPs

(c)