Abstract
Abstract The surface mass sensitivity of a chemical sensor device based on the velocity change of Love waves and Rayleigh waves is calculated for a three-layer sensor structure consisting of an intermediate gold spacer and a split sensitive organic layer. The mass sensitivity is optimized by variation of the gold spacer thickness. It is found that the Love mode in 120°-rotated Y -quartz is more sensitive than the Rayleigh mode in YZ -LiNbO 3 for an organic layer thickness greater than 2.5% of the wavelength.
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