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. Author manuscript; available in PMC: 2016 Oct 26.
Published in final edited form as: Biosens Bioelectron. 2008 Oct 1;24(7):1843–1849. doi: 10.1016/j.bios.2008.09.019

Figure 4.

Figure 4

Calibration curves for K+ compared with control curves without ionophores and for Na+. The dibenzo-18-crown-6 ionophore shows flexibility in its use as an ionophore in PVC and lipid bilayers with good linear response ranges, LODs on the order of 10−5, high selectivity for K+ over Na+ and slopes that are near Nernstian for the PVC and 47% of the PVC value for the SU-8 and 32% of the value for the silicon nanoaperture. SU-8 results are with the 40 µm apertures, while the silicon nanoaperture is 660 nm in size, and the conventional chamber a 350 µm Teflon® aperture.