Fig. 3: Morphology changes with or without CB[5] during regeneration. | Nature Communications

Fig. 3: Morphology changes with or without CB[5] during regeneration.

From: In situ electrochemical regeneration of nanogap hotspots for continuously reusable ultrathin SERS sensors

Fig. 3

a DF scattering spectra and (b) representative SEM images of the MLagg-CB[5] before and after undergoing 10 and 30 cycles of analyte detection, cleaning, and regeneration with CB[5]. c DF scattering spectra and (d) representative SEM images of the MLagg-CB[5] throughout different cycles of analyte detection, cleaning, and regeneration without CB[5]. Yellow arrows in (d) point to bridges formed between neighbouring AuNPs. For the DF spectra, solid lines and shaded area represent mean and ±1 s.d. of n = 150 spectra obtained across the area of a MLagg-CB[5]. Grey line highlights initial chain mode peak wavelength. Spectra are offset for clarity.

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