Size Effects of Closed Encounter Ag Nanoshell Pairs for SERS Application

Figure 3

Scattering cross section of Ag nanoshell pairs with various diameters and thickness: (a–d) Ag nanoshell pairs with diameters 50, 100, 150, and 200 nm and with shell thickness 5, 7.5, 10, and 15 nm. Three common wavelengths (532, 633, and 785 nm) of laser sources applied in SERS detectors are marked by dashed lines.

(a)

(b)

(c)

(d)