Propagation of Bleustein-Gulyaev wave in a piezoelectric crystal in contact with viscous conductive liquids

In this work we studied propagation of B-G wave in a piezoelectric crystal of hexagonal symmetry in contact with viscous conductive liquids. Explicit dispersion relations are derived for both the metallized and exact electrical solid/liquid interface conditions. It is found that acoustoelectric coupling and viscosity significantly affect acoustic wave propagation properties at a solid/liquid interface. This study provides essential data and theoretical foundation for the design and development of liquid phase sensors and biosensors.