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. Author manuscript; available in PMC: 2009 Aug 21.
Published in final edited form as: ACS Nano. 2009 Jun 23;3(6):1477–1484. doi: 10.1021/nn9003346

Figure 3.

Figure 3

SERRS tag population analysis. (a) Histograms of Raman scattering intensity from three SERRS tag preparations prepared with 0, 3, and 5 μL of silver enhancement solution. Illustrations display the relative sizes of the silica core (gray), gold shell (yellow), and silver shell (blue). (b–d) Density plots of SERRS tags prepared with 0, 3, and 5 μL of silver enhancement solution. The analysis was performed using 340 mW of 647 nm excitation and signal integration times of 300 μs.