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Micro and Nano Systems Letters
Fig. 2 | Micro and Nano Systems Letters

Fig. 2

From: SnO2 nanostructure-based acetone sensors for breath analysis

Fig. 2

Copyright (2020) Elsevier

a Schematic images of acetone sensing mechanism of Pt-PH-SnO2 spheres, b base resistances of dense SnO2 spheres, PH-SnO2 spheres, and Pt-PH-SnO2 spheres, and (c) pattern recognition using principal component analysis (PCA) of simulated gases (1–5 ppm) with dense SnO2 spheres, PH-SnO2 spheres, and Pt-PH-SnO2 spheres-based sensors. Reprinted from [80] with permission from Elsevier

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