Figure 4 | Scientific Reports

Figure 4

From: Graphene-protected copper and silver plasmonics

Figure 4

Sensitivity of copper SPR.

(a) SPR curves at different levels of graphene hydrogenation. (b) Spectral dependence of the ellipsometric phase Δ for different hydrogenation levels. The inset shows the corresponding Raman spectra. (c) SPR curves in two different liquids. The coupling prism has refractive index n = 1.8. The inset shows results of our modelling for (c). (d) The spectral dependence of the phase for the two liquids.

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