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Fig. 4 | Nanoscale Research Letters

Fig. 4

From: Enhancing Surface Plasmon Resonance Detection Using Nanostructured Au Chips

Fig. 4

The dependences of SPR position, θ min, on the refractive index of the environment, n, for Au standard sensor (curve 1) and Au gratings with period of 296.6 ± 0.5 nm and depth of relief of 13.5 ± 2 nm (curve 2) coated with a 4-nm chromium layer: a the plane of incidence of the probing laser beam is parallel to the grating wave vector (the azimuthal angle ϕ = 0), b ϕ = 5.7°, and c ϕ = 10°

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