dorsal/arxiv
View SchemaInfluence of electromagnetic interferences on the gravimetric sensitivity of surface acoustic waveguides
| Authors | L. Francis, J. -M. Friedt, R. De Palma, P. Bertrand, A. Campitelli |
|---|---|
| Categories | |
| ArXiv ID | physics/0307122 |
| URL | https://arxiv.org/abs/physics/0307122 |
Abstract
Surface acoustic waveguides are increasing in interest for (bio)chemical detection. The surface mass modification leads to measurable changes in the propagation properties of the waveguide. Among a wide variety of waveguides, Love mode has been investigated because of its high gravimetric 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 influence of these interferences on the gravimetric sensitivity is presented, whereby the structure of the entire sensor is modelled. We show that electromagnetic interferences generate an error in the experimental value of the sensitivity. This error is different for the open and the closed loop configurations of the sensor. The theoretical approach is completed by the experimentation of an actual Love mode sensor operated under liquid in open loop configuration. The experiment indicates that the interaction depends on the frequency and the mass modifications.
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"abstract": "Surface acoustic waveguides are increasing in interest for (bio)chemical\ndetection. The surface mass modification leads to measurable changes in the\npropagation properties of the waveguide. Among a wide variety of waveguides,\nLove mode has been investigated because of its high gravimetric sensitivity.\nThe acoustic signal launched and detected in the waveguide by electrical\ntransducers is accompanied by an electromagnetic wave; the interaction of the\ntwo signals, easily enhanced by the open structure of the sensor, creates\ninterference patterns in the transfer function of the sensor. The influence of\nthese interferences on the gravimetric sensitivity is presented, whereby the\nstructure of the entire sensor is modelled. We show that electromagnetic\ninterferences generate an error in the experimental value of the sensitivity.\nThis error is different for the open and the closed loop configurations of the\nsensor. The theoretical approach is completed by the experimentation of an\nactual Love mode sensor operated under liquid in open loop configuration. The\nexperiment indicates that the interaction depends on the frequency and the mass\nmodifications.",
"arxiv_id": "physics/0307122",
"authors": [
"L. Francis",
"J. -M. Friedt",
"R. De Palma",
"P. Bertrand",
"A. Campitelli"
],
"categories": [
"physics.bio-ph",
"physics.ins-det"
],
"title": "Influence of electromagnetic interferences on the gravimetric sensitivity of surface acoustic waveguides",
"url": "https://arxiv.org/abs/physics/0307122"
},
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