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. 2009 Jan 2;3(1):012002. doi: 10.1063/1.3056040

Figure 1.

Figure 1

(a) Schematic depiction of a SAW propagating on the surface of a piezoelectric substrate. Note the localization of the Rayleigh wave on the surface, which decays exponentially into the substrate such that the motion is negligible at a depth of 4–5 SAW wavelengths into the substrate. (b) Image of the SAW device consisting of the piezoelectric substrate on which the SAW propagates, (c) the portable power supply used to generate the SAW, and, (d) the interdigitated transducers (IDTs) patterned onto the piezoelectric substrate.