MASS SENSITIVITY OF ACOUSTIC PLATE MODE IN LIQUIDS

In this paper, the concept of electrical effective permittivity functi on is used to calculate the eigenfrequencies and the particle displace ments of piezoelectric acoustic plate modes (APM). These results allow ed us to determine the mass sensitivities of the first order vibration modes using a first order perturbation theory. Theoretical results ar e discussed and compared to those of a variational method and isotropi c two-layer composite analysis in the case of a shear horizontal APM s ensor on a singly rotated cut quartz substrate. Experimental measureme nts by a copper electrodeposition are carried out and show that the pe rturbation method leads to a better understanding of the APM behavior.