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Unified approach to analyse mass sensitivities of acoustic gravimetric sensors

Unified approach to analyse mass sensitivities of acoustic gravimetric sensors

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A unified approach based on Rayleigh's hypothesis for evaluating the mass sensitivities, Sm, of bulk, surface, plate and thin rod flexural acoustic gravimetric sensors is presented. The estimation of Sm uses the ‘equivalent depth’ which is determined by the displacement distribution of the acoustic mode. The Sm's for the lowest order torsional and longitudinal mode of a thin rod are reported for the first time.

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