Fast-LPG Sensors at Room Temperature by α-Fe₂O₃/CNT Nanocomposite Thin Films

Figure 5

Dynamic responses of (a) as-grown CNTs; (b) α-Fe₂O₃/CNTs; and (c) purified CNTs to LPG in air atmosphere. (d) demonstrates sensor responses by sensor type to varying LPG concentrations of 1–5 vol.%.

(a)

(b)

(c)

(d)