Fig. 6From: Bioengineered Silicon Diatoms: Adding Photonic Features to a Nanostructured Semiconductive Material for Biomolecular Sensing a Photoluminescence spectra of silicon diatoms after each functionalization step, from APTES to PrA. b Spectra fitted by a Gaussian multi-peak routine. c Ratio between the intensities of peak 2 and peak 1 for each functionalization stepBack to article page