Figure 4

Sensing in harsh and corrosive environments.

(A) Cross-sectional TEM images for an Au/TiO2 nanocomposite thin film. (B) Sensing response of an Au/TiO2 film to 4 vol.% H2 in different environmental conditions (A–B reprinted with permission from [35]. Copyright 2012, AIP Publishing LLC). (C) Bright-field TEM images of an Au-70TiO2-30NiO nanocomposite film. (D) Dynamic response of the Au-TiO2-NiO nanocomposite film to gas concentrations of 0.01 vol.% H2 S and 1 vol.% H2 in air (C–D adapted with permission from [36]. Copyright 2010 American Chemical Society). (E) Absorbance spectra and Lorentzian fits for an Au-YSZ film exposed to air and 100 ppm NO2 in air. (F) Sensor signal intensity over time for a Au-YSZ film exposed to air (signal decrease) and 5, 10, 50, and 100 ppm NO2 in air (signal increase) at 200, 300, 400, 500, 600, and 700°C (E–F adapted with permission from [37]. Copyright 2008 American Chemical Society).

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