Figure 4From: Polytetrafluorethylene-Au as a substrate for surface-enhanced Raman spectroscopy (a) Raman spectrum of pure BFD; (b) SERS spectrum of immobilized BFD ( c = 10 -2 mol/l) on the PTFE-Au; (c) SERS spectrum of immobilized BFD ( c = 10 -8 mol/l) on the PTFE-Au with AgNP (prepared by Figure 2b); (d) SERS spectrum of immobilized BFD ( c = 10 -8 mol/l) on the PTFE-Au with AuNP (prepared by Figure 2b); (e) Raman spectrum of pure PTFE.Back to article page