Figure 2From: Reproducible and label-free biosensor for the selective extraction and rapid detection of proteins in biological fluidsA series of SERS spectra of 2-QT randomly collected over the entire 8 mm diameter pAu/AuNS disc using a 50× objective with a laser focusing area of 0.32 µ2 and b 5× objective with a laser focusing area of 12.56 µ2.Back to article page