Fig. 3: SERS properties of GDY HHMSs. | Nature Communications

Fig. 3: SERS properties of GDY HHMSs.

From: Surfactant-free interfacial growth of graphdiyne hollow microspheres and the mechanistic origin of their SERS activity

Fig. 3

a SERS spectra of R6G samples recorded on dry GDY HHMS substrates. b SERS signals collected from 20 randomly selected sites on GDY HHMSs. c RSD of SERS signal intensities at 5000 sites. d Raman EFs with R1 and R2 at different concentrations. The error bars are based on the standard deviations of 10 measurements at each concentration. e SERS spectra of BPA. f SERS spectrum of 2,4-DCP. Excitation wavelength: 532 nm, laser power: 0.7 mW, integration time: 2 s for 10−8 M, 5 s for 10−9 M R6G, 15 s for 10−10 M, and 40 s for 10−11 M (BPA, 2,4-DCP). The fluorescent background of the probe molecule was removed. Source data are provided as a Source Data file.

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