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Biomedical Engineering

, Volume 43, Issue 3, pp 109–113 | Cite as

Flicker-Noise Gas Sensor

  • M. I. MakoviychukEmail author
  • A. L. Chapkevich
  • A. A. Chapkevich
  • V. A. Vinokurov
Article

Solid state gas sensors based on metal oxide compositions (e.g., SnO2) are thought to be the best to meet present day technical and economical requirements. The operating principles of such sensors are based on changes in conductivity of molecules of gases (deoxidizers and oxidants) present in the analyzed air. However, in some cases different gases cause the same change in conductivity, which is a substantial disadvantage of such sensors. The subject of this work is to present research into electrofluctuation (flicker-noise) gas sensors based on silicon, which, unlike the sensors mentioned above, have higher selectivity. The adsorption-induced response of these sensors (noise spectral density versus frequency relation) is a unique identifier of the analyzed gas mixtures. The goal of this work was to study possible ways to increase the adsorption-induced response of such gas-sensing structures based on silicon.

Keywords

Absorption Capacity Flicker Noise SIMOX Solid State Sensor Flicker Noise Spectroscopy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, Inc. 2009

Authors and Affiliations

  • M. I. Makoviychuk
    • 1
    Email author
  • A. L. Chapkevich
    • 2
  • A. A. Chapkevich
    • 3
  • V. A. Vinokurov
    • 3
  1. 1.Institute of Physics and TechnologyRussian Academy of SciencesYaroslavlRussia
  2. 2.Moscow Committee for Science and TechnologyMoscowRussia
  3. 3.Gubkin Russian State University of Oil and GasMoscowRussia

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