Fig. 5From: Highly sensitive plasmonic paper substrate fabricated via amphiphilic polymer self-assembly in microdroplet for detection of emerging pharmaceutical pollutantsSERS spectra of SD (a,b) and FLBN (c,d) obtained by varying the concentration (front to back: 10− 8, 10− 7, 10− 6, 10− 5, 10− 4 M) on the nanohybridized paper substrateBack to article page