Figure 3.
Corresponding color response matrix obtained from different sensor elements (NP1-NP5) toward the analytes. (a) Color changes of NP1-NP5 incubation with eight proteins (0.5 nM) and GO for 1 h. (b) Color changes of NP1-NP5 direct incubation without GO for the assay of eight proteins (c) Heat map derived from the absorbance signal responses of NP1-NP5 against 8 proteins after introduction of GO.
