Figure 9

Selective tests of S3 In₂O₃/Au NRs compared with pure In₂O₃ gas sensors for

(a) 1 ppm toluene, ethanol and formaldehyde at 250 °C and (b) 5 ppm formaldehyde, toluene and acetone at 400 °C. Ra/Rwet responses of S3 In₂O₃/Au NRs and pure In₂O₃ gas sensors versus RH ambience at (c) 250 °C and (d) at 400 °C.