Research Progress on Humidity-Sensing Properties of Cu-Based Humidity Sensors: A Review

Figure 13

(a) SEM micrograph of PVP/CuO nanocomposite. (b) Resistance variation with different %RH at different frequencies of PVP/CuO nanocomposite. (c) Response and recovery curve of PVP/CuO nanocomposite sensors. (d) Hysteresis curve of PVP/CuO nanocomposite sensors at 100 Hz [15].

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