Skip to main content
. Author manuscript; available in PMC: 2017 Oct 4.
Published in final edited form as: Langmuir. 2015 Jun 2;31(23):6563–6569. doi: 10.1021/acs.langmuir.5b01418

Figure 2.

Figure 2

The absolute signal (current density) measured at a heterogeneous surface in the absence of target molecule represents the weighted algebraic sum of the contributions of each aptamer. At constant surface coverage this results in minimum current densities (signal without target) of 306 ± 10 μA/cm2 and 143 ± 14 μA/cm2 for the homogenous Parent and Mut sensors respectively. When mixed at a 50:50 ratio, the current density with no target present is 226 ± 40 μA/cm2. The voltammograms show representative data and the bar graph and error bars represent the average of at least three independently fabricated sensors.