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. 2015 May 5;5(2):737–749. doi: 10.3390/nano5020737

Figure 8.

Figure 8

(a) Response and recovery times for Ag@α-Fe2O3 sensor; (b) Response of Ag@α-Fe2O3 and α-Fe2O3 sensors towards 12.5 ppm ethanol at 250 °C.