TLC-SERS Plates with a Built-In SERS Layer Consisting of Cap-Shaped Noble Metal Nanoparticles Intended for Environmental Monitoring and Food Safety Assurance

Figure 6

A photo of a TLC-SERS (a); only the left side of the central broken line was protected. Of the SEM images in (b) and (c), (b) shows the protected area.

(a)

(b)

(c)