Figure 2 | Scientific Reports

Figure 2

From: Chemically Functionalised Graphene FET Biosensor for the Label-free Sensing of Exosomes

Figure 2

(a) Raman spectra of bare (black trace) and 10 mM PBASE functionalised (red trace) graphene with peak identifiers. The resulting spectra are averages of spectra taken from various points over the samples. (b) Comparison of the I(2D)/I(G) intensity ratio between bare and PBASE functionalised graphene where histograms were fitted with Gaussian curves and (c) the corresponding 2D/G Raman intensity ratio maps before and after functionalisation.

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