Due to the harmonious effect of mixing the near conductivity of metallic rGO and SnO2, the sensor showed an enhancement in the detection limit of 5 ppm of CO2. Moreover, it showed excellent sensing at RT and a humidity level of 58% RH. The sensor response was recorded, with a value of...
The well-known distance-based methods use 𝑘k-means clustering [19] and the 𝑘k-near neighbors [20] algorithm. Reconstruction-based methods, such as Principal Component Analysis (PCA) [21] and neural network [19], can autonomously model the underlying samples, and the reconstruction error ...