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. 2021 Sep 8;7(37):eabh1055. doi: 10.1126/sciadv.abh1055

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Fig. 2. — (A) The wiring diagram for an OECT-based complementary inverter with two OECTs independently gated. (B) The condensed wiring diagram of an OECT complementary inverter based on a cofacial pair of vOECTs. (C) Schematic cross section of a cofacial pair wired as a complementary inverter and a top view microscopic image of the cofacial inverter. (D) The voltage transfer characteristics (VTCs) of the cofacial pair inverter (ΔV_in = 0.01 V; 0 to 0.6 V; and V_DD = 0.7, 0.75, and 0.8 V). The corresponding gain (δV_out/δV_in) with peak gains of 15, 18, and 28 for V_{DD =} 0.7, 0.75, and 0.8 V, respectively. (E) The frequency response of the cofacial pair. The inset shows a sinusoidal input (ΔV_in = 0.01 V with an offset of 0.23 V at 1.5 Hz and V_DD = 0.8 V) with the corresponding amplified output.