DISSERTATION
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_____________________________________________________________ Results and Discussion<br />
Figure 3.26. Comparison of DNA immobilization methods. a) Nyquist plots with Rct values<br />
obtained for different immobilization times with the immobilization being performed by<br />
incubation and the potential-assisted method. b) Comparison of the immobilization<br />
kinetics using these two methods. ssDNA immobilization, MCH passivation and EIS<br />
measurements were performed as stated in Figures 3.7 and 3.8. Rct values are obtained<br />
from EIS measurements for ssDNA/MCH-modified electrodes by fitting Nyquist plots to<br />
the [R(Q[RW])] equivalent circuit. Figure adapted from ref. 5 .<br />
3.3 Importance of controlling the surface 62