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. 2017 Oct 9;7:12826. doi: 10.1038/s41598-017-12896-1

Figure 2.

Figure 2

Absorption into an Ag reflector at the rear of semi-infinite non-absorbing Si, with embedded arrays of NSs of varying sizes and an 800 nm period. Absorption peaks emerge at resonant wavelengths. As the NS size increases, these resonances strengthen and red-shift. E-field profiles for each resonance are shown in the insets.