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. Author manuscript; available in PMC: 2015 Oct 15.
Published in final edited form as: Biosens Bioelectron. 2014 Apr 13;60:92–100. doi: 10.1016/j.bios.2014.04.008

Figure 5. Sensitivity of the nanomembrane sensor.

Figure 5

(A) Changes observed in CVC with gradual increase in the voltage shift upon incubating the same probe-functionalized biochip with increasing DNA concentration (27-base long target). As the sensing principle is based on charge inversion phenomenon, we observed that by decreasing the exposed sensing area, we were able to achieve sensitivity down to 1 pM concentration. Again, no change in CVC was observed for non-target sequence. (B) Bar diagram showing voltage shift from probe level with increasing DNA concentration (N=3 experiments).