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. Author manuscript; available in PMC: 2009 Dec 16.
Published in final edited form as: Langmuir. 2008 Dec 16;24(24):14282–14288. doi: 10.1021/1a8029243

Figure 1.

Figure 1

Schematic illustration of SECM imaging of DNA monolayers modified with Nile Blue (NB) at the top or the bottom; the negatively charged backfilling underlayer is also shown. The sequence was 5′-UGC GTG CTT TAT ATC TC-3′ (top NB) and 5′-TGC GTG CTT TAT ATC UC-3′ (bottom NB), where the italicized U indicates the location of the NB moiety.