An indicator-mediated surface-enhanced Raman scattering (SERS) sensor platform with highly uniform SERS sensitivity was fabricated by modifying the 4-Mercaptopyridine (4-MPY) molecules as indicator onto the surface of the Ag nanoparticles which were anchored onto the silicon wafer. The present SERS sensor platform realized quantitative detection of Zn2+.

RSC Adv., 2016