The recorded ionic current versus the variation of IgG concentration in 0.1 mol/L KCl solution. The applied voltage is 1 V. The diameter of the nanopore arrays is 50 nm. The inset in the top right corner shows the differences between the background currents and the recorded currents at 40 ng/mL of IgG for different KCl concentrations.
Liu et al. Nanoscale Research Letters 2013 8:498 doi:10.1186/1556-276X-8-498