838191.fig.002a
(a)
838191.fig.002b
(b)
838191.fig.002c
(c)
838191.fig.002d
(d)
Figure 2: The relative field intensities ( ) distribution on the top surface of nanodisks along plane at respective resonance wavelength for three different patterns: (a) single nanodisk, (b) seven nanodisks system, and (c) periodic hexagonal arrays. (d) The transmission spectra of the above three patterns. The diameter and the gap are 100 nm and 70 nm, respectively.