Fig. 7From: Core-shell of FePt@SiO2-Au magnetic nanoparticles for rapid SERS detection(a) SERS spectra of S. aureus; (b) integrated intensity (735 cm−1) of SERS spectra in the Au-FePt@SiO2-N (0.3 M of EDS) with various Au nanoparticles concentrations (47.6–238 μM)Back to article page