Fig. 7
From: Micro-Extinction Spectroscopy (MExS): a versatile optical characterization technique
Single NP spectroscopy using darkfield MExS. a Optical image of the scattering of Au decahedra deposited on an ITO coverslip, showing proper distribution. The red circle indicates a NP of interest. b MExS reconstructed spectrum image of the ROI. The red circle indicates the same NP of interest, and the colormap shows the integrated scattering intensity from low (blue) to high (red). c Darkfield scattering of a single NP in water–glycerol solutions with different refractive indices (n). d LSPR energy vs. refractive index for the data shown in c. The slope is the RIS of the single NP. e SEM image of the NP for which data are shown in c, d