Fig. 4. (a and b) Gas sensing performances of RGOEY-1 and FRGOEY-1 exposed to 5.0 ppm NO2 gas under 0%, 100%, and 200% strains. (c) Comparison of gas sensing performances of RGOEY-1 and FRGOEY-1 exposed to 5.0 ppm under 0%, 100%, and 200% strains.
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