Tunable multiple plasmon resonances and local field enhancement of nanocrescent/nanoring structure

Wang Bin-Bing^a), Zhou Jun†^a), Chen Dong^a), Fang Yun-Tuan^b), Chen Ming-Yang^c)

The distributions of electric field component (a) along and (b) perpendicular to the major axis of the NCNR structure for the plasmon resonance wavelengths of (i) 536, (ii) 668, (iii) 765, (iv) 900, (v) 1147, and (vi) 1656 nm at s = 1 nm, t = 2 nm, g = 2 nm, and R _out = 60 nm, respectively.