Conductivity-Type Sensor Based on CNT-WO_𝟑 Composite for NO₂ Detection

Figure 3

SEM images of (a) CNT-0.1 wt% WO₃ composite microsensor; (b) CNT-1 wt% WO₃ composite microsensor; and (c) 7 wt% WO₃ composite microsensor.

(a)

(b)

(c)