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. 2018 Jul 25;8(8):568. doi: 10.3390/nano8080568

Figure 2.

Figure 2

(A–F) Calculated electric field |E2|/|E02| of the Au ring-strip nanosystem at different resonance wavelengths. The structure parameters are as follows: W = 10 nm, R1 = 20 nm; R2 = 30 nm; L = 60 nm. The color bars in the logarithmic scale for electric enhancement are shown (the units are (V/m)2).