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. Author manuscript; available in PMC: 2019 Oct 1.
Published in final edited form as: IEEE Sens J. 2018 Aug 6;18(19):7899–7906. doi: 10.1109/JSEN.2018.2863644

Fig. 9.

Fig. 9.

Output of amperometric readout circuit for on-CMOS RTIL-based sensor response to oxygen. Oxygen concentration varies from 0 – 21% with a step of 2.1%. Oxygen exposures were 10 s in duration, preceded and followed by exposure to pure nitrogen for 30 s. The amperometric circuit was set to Vref1 = 2.1 V and Vref2 = 1.3 V (the sensor was applied at −0.8V respectively), and fs=100 kHz.