Rapid Detection and Identification of miRNAs by Surface-Enhanced Raman Spectroscopy Using Hollow Au Nanoflowers Substrates

Figure 2

(a) SEM image of the HAuNFs substrates, the inset is digital photograph of substrates. (b) Dark-field image of the HAuNFs substrates. (c) SERS mapping of NBA-labeled HAuNFs substrates at 592 cm⁻¹ of the band. (d) SERS spectra at point A and point B in (c).

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