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. Author manuscript; available in PMC: 2012 Jun 6.
Published in final edited form as: Angew Chem Int Ed Engl. 2011 May 3;50(24):5473–5477. doi: 10.1002/anie.201101632

Figure 2.

Figure 2

a) Schematic showing the selective removal of 4-MBT molecules (red) from the surface of a Ag nanocube supported on a substrate. Plasma etching with O2 can remove the exposed molecules on the particle’s surface, leaving behind molecules at the nanocube-substrate interface. SERS spectra taken from Ag nanocubes functionalized with 4-MBT (with a peak at 1592 cm−1) and then deposited on: glass, b); on Si, c); and on Au microplate substrates, d). The SERS spectra were recorded from the same nanocube before and after plasma etching.