Fig. 4 | Scientific Reports

Fig. 4

From: Dual-biased metal oxide electrolyte-gated thin-film transistors for enhanced protonation in complex biofluids

Fig. 4

Electric characteristics of DB EGTFTs in various pH solutions at leveragedVBG and pH levels. (A) Three-dimensional plots of pH and VBG against VTH. (B) The plots of VTH as a function of pH with the pH sensitivity, encompassing a comparison of slopes with the Nernst limit and various other materials. The inset shows the transfer characteristics with various pH solutions at VBG = 40 V. (C) The VTH dynamics of dual-gate pH sensors under repetitive pH cycles in pH standard solutions, where VD = 0.5 V, VTG = − 0.5–0.5 V, and VBG = 40 V.

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