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

Figure 3

SPR spectrum (a) for number of GO layer L = 0, (b) for number of GO layer L = 2, (c) for number of GO layer L = 3, (d) for number of GO layer L = 4, for different refractive indices of the sensing medium layer. The curves A1, A2, A3, A4, and A5 stand for the refractive index of sensing layer n = 1.30, n = 1.32, n = 1.34, n = 1.36, and n = 1.38, respectively. And the thickness is 15 nm, 10 nm, 46 nm, and 1 × 0.65 nm for TiO₂, ZnO, Au, and MoS₂ respectively.

(a)

(b)

(c)

(d)