Tunable multiple plasmon resonances and local field enhancement of nanocrescent/nanoring structure
Wang Bin-Binga), Zhou Jun†a), Chen Donga), Fang Yun-Tuanb), Chen Ming-Yangc)
       
Distributions of electric field intensity of the NCNR structure for the plasmon resonance wavelengths of (i) 536, (ii) 668, (iii) 765, (iv) 900, (v) 1147, and (vi) 1656 nm.