Illumination effect on recognition ability of multisensor microsystems based on tin oxide nanowhiskers

I.V. Sinev, N.A. Klychkov, D. A. Timoshenko, V.V. Simakov

Saratov State University, Saratov, Russia

DOI: 10.26456/pcascnn/2020.12.713

Abstract: Using standard methods of data classification, the possibility of recognizing gas mixtures using a multisensor microsystem with a gas-sensitive layer based on whisker nanocrystals is shown. The statistical analysis of the experimental results showed that the illumination of a gas-sensitive layer of tin dioxide with a LED in the ultraviolet range significant increases the median Euclidean-Mahalanobis distance between the classes (recognition ability) of various gas samples compared to the results of measurements in the dark. Suggested that the increase in the recognition ability of a multisensor microsystem is associated with the selective effect of illumination on surface chemical reactions of oxygen species and particles of analyzed gases.

Keywords: tin dioxide, nanowhiskers, multisensor microsystems, ultraviolet illumination, recognition of gas mixtures.

Bibliography link:

Sinev, I.V. Illumination effect on recognition ability of multisensor microsystems based on tin oxide nanowhiskers / I.V. Sinev, N.A. Klychkov, D. A. Timoshenko, V.V. Simakov // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. – 2020. – I. 12. – P. 713-721. DOI: 10.26456/pcascnn/2020.12.713. (In Russian).

Full text (in Russian): download PDF file