Fig. 7 | NPG Asia Materials

Fig. 7

From: A highly sensitive and moisture-resistant gas sensor for diabetes diagnosis with Pt@In2O3 nanowires and a molecular sieve for protection

Fig. 7

a Schematic illustration of the hydrolysis and dehydration process of a molecular sieve. b The response of the S1–S5 NW gas sensors (1.8 ppm) as function of RH% and c the response of the S1–S5 NW gas sensors after coating with a molecular sieve layer (SBA-15) as function of RH%. d The responses of the S4 gas sensor and e the response of the S4 gas sensor coated with the molecular sieve layer to real exhaled breath samples from diabetic and healthy volunteers. The insets are SEM images of gas sensors before (d) and after (e) coating with the molecular sieve layer

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