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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 1.

Figure 1

Single nanoparticle flow spectrometer. (a) Sample is hydrodynamically focused to flow through a focused laser beam. Note that the figure is not to scale. (b) Schematic of the Raman flow spectrometer setup. Refer to the Materials and Methods section for detailed instrument information. (c) Single tag Raman scattering spectra of an inactive SERRS tag (black) and Raman-active tags prepared with oxazine 170 (red), thionin (blue), and malachite green (green) of varying intensities. Spectra have been offset for clarity.