DISSERTATION

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