Viscosity Measurement of Ferroelectric Liquid Crystal Using Shear Horizontal Wave Propagation in a Trilayer Structure

摘要: Propagation characteristics of a shear horizontal (SH) wave in trilayer structure, having viscous liquid layer between piezoelectric ceramic plate and glass plate, are described on the basis numerical experimental investigations. Viscosity dependences mechanical displacement distributions relationships fractional velocity change square root viscosity discussed. The is related to acoustic phase delay, accompanied by SH propagation, two interdigital transducers device. measured temperature dependence silicon oil good agreement with analysis result propagation. An electrorheology effect ferroelectric crystal (FLC: CS1014) also this technique.