Figure 2.

Dependence of the reflected extinction spectra of the NDoM structure calculated by FDTD simulation on (a) disk radius and thickness of the spacer layer for different radii: (b) r = 30 nm, (c) r = 40 nm, (d) r = 50 nm, and (e) r = 60 nm. (a) also shows the electric field distribution at the resonance peak wavelength for the nanodisk with a radius of 50 nm.