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. Author manuscript; available in PMC: 2014 Jun 7.
Published in final edited form as: Analyst. 2013 Jun 7;138(11):3150–3157. doi: 10.1039/c3an36898j

Figure 1.

Figure 1

(A) TERS map with simultaneously obtained topographic features and Raman characteristics from 80nm biotinylated-GNP probe adsorbed onto a streptavidin functionalized slide. Scan size: 2×2 μm, TERS step-size 55nm. Color represents the Raman intensity of a streptavidin marker band (965cm−1). (B) Plot of the representative TERS spectra extracted from 6 pixels along the colored line y= 1.08 μm in (A), where (1) x=1.31 μm, (2) x=1.25 μm, (3) x=1.14 μm, (4) x=1.08 μm, (5) x=0.97 μm, (6) x=0.86 μm.