Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials
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Principles of creating a virtual multi-sensor system for recognition gas mixtures

M.D. Korabel, I.V. Sinev, D.A. Shikunov, N.A. Klychkov, D.A. Timoshenko, V.V. Simakov

Saratov State University

DOI: 10.26456/pcascnn/2020.12.827

Original article

Abstract: The concentration dependence of the gas sensitivity of a gas sensor based on a nanostructured tin dioxide film was studied under various operating conditions in a wide range of concentrations of gases of various nature (ammonia, acetone, propanol, and ethanol). It has been experimentally shown that the concentration dependence of the gas sensitivity is power-law, the exponent n is different for different gas samples, and the value of the power-law exponent n depends on the operating mode of the sensor and the chemical nature of the sample being analyzed. The studied phenomenon makes it possible to recognize gas samples containing vapors of different chemical substances. The probability of classification of gas samples of ammonia, acetone, propanol and ethanol by the method of nearest neighbors was more than 95%.

Keywords: tin dioxide, nanostructured films, adsorption on an inhomogeneous surface, recognition of organic vapors

  • Maksim D. Korabel – undergraduate student Saratov State University
  • Il'ya V. Sinev – Ph. D., Associate Professor of the Department of Materials Sciences and Technologies and Quality Management Saratov State University
  • Dmitrii A. Shikunov – undergraduate student Saratov State University
  • Nikita A. Klychkov – undergraduate student Saratov State University
  • Dmitrii A. Timoshenko – postgraduate student Saratov State University
  • Vyacheslav V. Simakov – Dr. Sc., Professor of the Department of Materials Sciences and Technologies and Quality Management Saratov State University

Reference:

Korabel, M.D. Principles of creating a virtual multi-sensor system for recognition gas mixtures / M.D. Korabel, I.V. Sinev, D.A. Shikunov, N.A. Klychkov, D.A. Timoshenko, V.V. Simakov // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. – Tver: TSU, 2020. — I. 12. — P. 827-835. DOI: 10.26456/pcascnn/2020.12.827. (In Russian).

Full article (in Russian): download PDF file