Research / 2021 / Article / Fig 4

Research Article

Robust Carbonated Structural Color Barcodes with Ultralow Ontology Fluorescence as Biomimic Culture Platform

Figure 4

(a) The optical photographs of sintered SiO2 beads, PDA@SiO2 beads, and C@SiO2 beads excited by natural (i), UV (ii), blue (iii), and green (iv) light, respectively. The insert bar is 200 μm. (b) The ontology fluorescence intensity of SiO2 beads, PDA@SiO2 beads, and C@SiO2 beads shot by UV, blue, and green light, respectively. (c) The ontology fluorescence intensity of SiO2 beads, PDA@SiO2 beads, and C@SiO2 beads shot by different exciting intensities of UV (i), blue (ii), and green (iii) light.