- 作者: RUYEN RO, SHIUH-KUANG YANG, HUNG-YU LEE, AND CHI-YEN SHEN
- 中文摘要: Propagation characteristics of surface acoustic waves (SAWs) at the boundary between a fluid medium and a piezoelectric substrate are functions of the material properties of the piezoelectric crystal and acoustoelectric properties of the fluid medium. Without using the perturbation method, characteristics of SAWs were determined in this study by directly solving Christoffel's equations subjected to appropriate boundary conditions at the interface. The effects of conductivities and dielectric constants of adjacent liquid on the phase velocities and attenuation constants of Rayleigh and shear horizontal leaky SAWs were then investigated numerically. Results obtained can be employed to design liquid sensors as well as to characterize the electrical properties of the fluid medium using SAW devices.
- 英文摘要: --
- 中文關鍵字: surface acoustic wave, conductivity, dielectric constant, phase velocity, attenuation constant, liquid sensor
- 英文關鍵字: --