High-Sensitivity Biosensor-Based Enhanced SPR by ZnO/MoS₂ Nanowires Array Layer with Graphene Oxide Nanosheet

Figure 2

SPR spectrum (a) for number of MoS₂ layer L = 0, (b) for number of MoS₂ layer L = 1, (c) for number of MoS₂ layer L = 2, (d) for number of MoS₂ layer L = 3, for different refractive indices of sensing medium layer. The curves A1, A2, A3, A4, and A5 stand for the refractive index of sensing layers n = 1.30, n = 1.32, n = 1.34, n = 1.36, and n = 1.38, respectively. The thickness is 20 nm, 10 nm, 40 nm, and 1 × 1.6 nm for TiO₂, ZnO, Au, and GO layer, respectively.

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