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.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
