Synthesis of Gold Nanoparticles to Capture Lifelike Proteins: Application on the Multichannel Sensor Array Design

Figure 7

Construction of visual sensor array for discrimination of heavy metal ions (0.77 M). Digital photographs of the [AuCl₄]⁻ and Glu mixture in the absence (named “before”) and presence (named “after”) of heavy metal ions after microwave reaction. For visualization, the color ranges of these difference maps are expanded from 4 to 8 bits per color (RGB range 4–19 expanded to 0–255).