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Starting with the Rayleigh surface acoustic wave (SAW) delay line, we can see that propagating wave is confined to the top surface of the substrate. For a particle on the surface of the substrate, the propagation of the Rayleigh wave will cause the particle to experience a vertically aligned elliptical motion. Read More
Since there is no vertical component of displacement, the STW could theoretically be used for liquid-based applications. In a practical sense, use as a liquid-based sensor is very unlikely. Read More
