Influence of electromagnetic interferences on the mass sensitivity of Love mode surface acoustic wave sensors

Francis, Laurent;Friedt, JM;Bertrand, Patrick
(2005) Sensors and Actuators A: Physical : an international journal devoted to research and development of physical and chemical transducers — Vol. 123-24, p. 360-369 (2005)

Files

pdfdocument.pdf
  • Restricted Access
  • Adobe PDF
  • 309.42 KB
Request a copy

Details

Authors
Abstract
Surface acoustic waveguides have found an application for (bio)chemical detection. The mass modification due to surface adsorption leads to measurable changes in the propagation properties of the waveguide. Among a wide variety of waveguides, the Love mode device has been investigated because of its high mass sensitivity. The acoustic signal launched and detected in the waveguide by electrical transducers is accompanied by an electromagnetic wave; the interaction of the two signals, easily enhanced by the open structure of the sensor, creates interference patterns in the transfer function of the sensor. The interference peaks are used to determine the sensitivity of the acoustic device. We show that electromagnetic interferences generate a distortion in the experimental value of the sensitivity. This distortion is not identical for the two classical instrumentation of the sensor that are the open and the closed loop configurations. Our theoretical approach is completed by the experimentation of an actual Love mode sensor operated under liquid conditions and in an open loop configuration. The experiment indicates that the interaction depends on frequency and mass modifications. (C) 2004 Elsevier B.V. All rights reserved.
Affiliations

Citations

  • APA
  • Chicago
  • FWB

Francis, L., Friedt, J., & Bertrand, P. (2005). Influence of electromagnetic interferences on the mass sensitivity of Love mode surface acoustic wave sensors. Sensors and Actuators A: Physical : an international journal devoted to research and development of physical and chemical transducers, 123-24, 360-369. https://doi.org/10.1016/j.sna.2005.03.030 (Original work published 2005)