(a)
(b)
(c)
Figure 3: (a) AFM image of 0.3 μM d(TG4T) in pH 7.0, in the presence of Na+ and K+ ions, at different incubation times; (b) representation of the d(TG4T) single-strand and GQ electrochemical detection; (c) DP voltammograms baseline corrected in 3.0 μM d(TG4T) in pH 7.0: incubation time and K+ ions concentration dependence. [Adapted from [51] with permission.]