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Molecular and Quantum Acoustics

Tytuł artykułu

Detection of hydrogen by means of single and bilayer sensor structures in surface acoustic wave system

Autorzy Jakubik, W. P. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
EN Presented here are the results concerning an investigations of sensor properties of a single and bilayer sensor structures in a Surface Acoustic Wave systems. Among the single structure is: vacuum deposited 20nm palladium thin layer. Whereas the bilayer structures consists of two layers produced in two different vapour deposition processes. The first one is a phthalocyanine thin layer, whereas the second is a 20nm thin palladium (Pd) film. The following bilayer structures are investigated: Pd+CoPc, Pd+PbPc and Pd+H2Pc from the point of view their sensor properties towards hydrogen and other such toxic gases like: NO2, SO2 in synthetic dry air. These structures were formed in one of the dual delay line systems on a LiNbO3 Y-cut Z-propagation substrate, while the other serves as a reference, permitting an easy detection of the arising differential frequency Äf. This frequency, depending on the operating frequency modes, is in the range of 50kHz to 400 kHz, whereas the oscillator frequencies are in the range of 43,6MHz. The wavelength is 80um. Investigations have been performed in a two different temperatures similar to 220C and similar to 500C.
Słowa kluczowe
EN surface acoustic wave   acoustical gas sensors   polymer sensor layer  
Wydawca Silesian Division of Polish Acoustical Society
Czasopismo Molecular and Quantum Acoustics
Rocznik 2008
Tom Vol. 29
Strony 115--120
Opis fizyczny Bibliogr. 18 poz., rys.
autor Jakubik, W. P.
  • Institute of Physics, Silesian University of Technology,44-100 Gliwice, Poland
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