Surface Acoustic Wave Interaction with a Mixture of Oxygen and Nitrogen

• Autorzy: Pasternak Mateusz , Jasek Krzysztof , Grabka Michał , Borowski Tomasz

Identyfikatory

DOI

10.24425/aoa.2020.134065

• Języki publikacji: EN

Abstrakty

EN

Parameters of surface acoustic waves (SAW) are very sensible to change of physical conditions of a propagation medium. In the classical theory formulation, the waves are guided along the boundary of semi-infinity solid state and free space. A real situation is more complex and a medium commonly consists of two physical components: a solid substrate and a gaseous or liquid environment. In the case of stress-free substrate, the strongest impact on SAW properties have surface electrical and mechanical conditions determined by solids or liquids adhering to the boundary. This impact is utilised for constructing sensors for different gases and vapours e.g. (Jakubik et al., 2007; Hejczyk et al., 2011; Jasek et al., 2012). The influence of gaseous environment on the SAW properties is usually very weak and ignored. However, in certain condition it can be significant enough to be applied to sensor construction. In general, it concerns Rayleigh wave devices where energy leakage phenomenon is perceptible, especially when the gas being detected considerably changes the density of environment. The paper presents the results of experiments with oxygen-nitrogen mixture. Their primary aim was focused on finding the dependence of resonant frequency and attenuation in SAW resonator on parameters and concentrations of the gas in the environment.

Słowa kluczowe

EN

surface acoustic wave sensors; oxygen detection; leaky Rayleigh waves

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2020
• Tom: Vol. 45, No. 3
• Strony: 483--486
• Opis fizyczny: Bibliogr. 14 poz., rys., wykr.

Twórcy

autor

Pasternak Mateusz

• Faculty of Electronics, Military University of Technology, Warsaw, Poland

autor

Jasek Krzysztof

• Faculty of Advanced Technologies and Chemistry, Military University of Technology, Warsaw, Poland

autor

Grabka Michał

• Faculty of Advanced Technologies and Chemistry, Military University of Technology, Warsaw, Poland

autor

Borowski Tomasz

• Faculty of Electronics, Military University of Technology, Warsaw, Poland

Bibliografia

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• 9. Jasek K., Neffe S., Pasternak M. (2012), SAW sensor for mercury vapour detection, Acta Physica Polonica A, 122 (5): 825-828, doi: 10.12693/APhysPolA.122.825.
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• 14. Zhu J., Popovics J. S., Schubert F. (2004), Leaky Rayleigh and Scholte waves at the fluid-solid interface, Journal of the Acoustical Society of America, 116 (4): 2101-2110, doi: 10.1121/1.1791718.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).