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Real-time response for IDS flowing through Ppy nanowire at various pH values as a function of gate potential VG = 0.8 V & 0.2 V at VDS = 0.5 V. (Inset) ΔIDS/IDS0 vs pH calibration curve of Ppy nanowire FET device for aspect ratio (L:D = 2.19:0.215) with solid line representing the best linear fit along with their respective regression coefficients (R2).
