Cell Imaging by Spontaneous and Amplified Raman Spectroscopies

Figure 2

Characterization of the SERS substrate. (a) TEM micrograph of hexagonal nanostructure obtained following the procedure described in [25]. The inset shows, in detail, a single cluster of Ag-NPs. (b) TEM micrograph of the pattern obtained by applying our implemented protocol. The filling fraction is highly increased reducing nanoisland gaps to 2-3 nm, as shown in the inset. Bar scales are 50 nm in (a) and 150 nm in (b). Bar scale in the inset in (a) is 26 nm. (Adapted from [37] with permission from the Royal Society of Chemistry.)

(a)

(b)