Figure 8. Performances of the as-developed sensing platform to individuals of proteins.

(a) Color images of the Au(I) anions, luminol and H₂O₂ mixture before and after exposure to different concentrations of Glu and Pep, along with the color difference maps. For display purpose, the color ranges of the difference maps are expanded from 4 to 8 bits per color (RGB range of 4–19 expanded to 0–255). (b,c) The total EDs versus different concentrations of Glu and Pep, respectively. (d) PCA plot for the discrimination of Glu and Pep at different concentrations based on the RGB alterations of the as-developed system. The error bars in Fig. 8b,c represent the standard deviations of triplicate experiments.