Surface-acoustic-wave device incorporating conducting Langmuir-Blodgett films

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Surface-acoustic-wave device incorporating conducting Langmuir-Blodgett films

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© The Institution of Electrical Engineers
Published

Surface-acoustic-wave (SAW) devices incorporating conducting Langmuir-Blodgett (LB) films are reported for the first time. Excellent characteristics have been obtained using a mixed valence charge tranfer salt of a substituted pyridinium tetracyanoquinodimethane. The control afforded by the deposition technique has enabled the fractional change in surface wave velocity due to the electrical effects to be distinguished from those due to mass loading. The resistivity of the organic surface layer is measured to be 2Ωcm.

Inspec keywords: Langmuir-Blodgett films; electric sensing devices; surface acoustic wave devices

Other keywords: fractional change in surface wave velocity; surface acoustic wave devices; SAW devices; 2 ohmcm; organic surface layer; electrical effects; mixed valence charge transfer salt; conducting Langmuir-Blodgett films; mass loading; LB films; deposition technique

Subjects: Sensing devices and transducers; Acoustic wave devices; Transducers; Sensing and detecting devices; Electric transducers and sensing devices

References

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      • M. vandevyver , A. Barraud , P. Lesieur , J. Richard , A. Ruaudel-Teixier . Electronic transport properties in conducting Langmuir-Blodgett films. J. Chim. Phys.
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      • G.G. Roberts . An applied science perspective of LB films. Adv. Phys.
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      • A. D'amico , A. Palma , E. Verona . Surface acoustic waves hydrogen sensor. Sens. & Actuators
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      • J. Richard , A. Barraud , M. vandevyver , A. Ruaudel Teixier . J. Mol. Electron..
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      • B.A. Auld . (1973) , Acoustic fields and waves in solids.
    6. 6)
      • A.J. Ricco , S.J. Martin , T.E. Zipperian . Surface acoustic wave gas sensor based on film conductivity changes. Sens. & Actuators
    7. 7)
      • H. Wohltjen . Mechanism of operation and design considerations for surface acoustic wave device vapour sensors. Sens. & Actuators
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