Fig. 8.

Spatially resolved spectroscopic information extracted from the tissue phantoms containing different species of NPs. (a): spectra from the sample containing cells incubated with GNR. The peak of the extinction curve (green) is at 606 nm, showing a 3 nm shift from its extinction peak in DI water. (b): spectra from the sample containing cells with GNS. The extinction peak (green) is at 537.1 nm, which has a 2.1 nm shift from its extinction peak in DI water. (c): spectra from the sample containing cells without any NPs, exhibiting decreasing scattering with wavelength, the typical extinction trend seen for cell features. All curves are normalized.