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. 2017 Mar 23;7:45210. doi: 10.1038/srep45210

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(a) The simulated reflectance spectrum of the proposed structure in the near-infrared region. (b) The simulated reflectance spectrum of the proposed structure in mid-infrared range. (c) The simulated reflectance spectrum of metallic grating structure. (d) The simulated reflectance spectrum of the structure with a large t₂ = 500 nm, when the other parameters are fixed.