Plasmonic Filters Based on Lithographically Patterned and Hexagonally Arranged Triangular Silver Nanoparticles Array

Figure 10

SEM images of the silver nanoarrays for different PS sphere sizes with fixed silver film thickness of 40 nm: (a) 230 nm, (b) 280 nm, (c) 380 nm, and (d) 460 nm.

(a)

(b)

(c)

(d)