Wu, T. T.T. T.WuChang, M. P.M. P.ChangTSUNG-TSONG WU2020-04-282020-04-2820020021-492200214922https://scholars.lib.ntu.edu.tw/handle/123456789/487127https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036697550&doi=10.1143%2fjjap.41.5451&partnerID=40&md5=4c4e0175a4419a30aae348e8aff903f9In this paper, we present an analysis of the velocity dispersion and wave attenuation of a layered piezoelectric medium loaded with a viscous liquid. The eight-dimensional formalism of the surface wave and the recursive formula were adopted to obtain the impedance tensor of a piezoelectric layered half-space and that of viscous liquids. The dispersion equation of the surface waves in such a layered system was formulated under the continuity conditions at the solid-liquid interface. Numerical examples of half-space (lithium niobate), single-layered (lithium niobate/sapphire) and double-layered half-space (ST-cut quartz/lithium niobate/sapphire, lithium niobate/ST-cut quartz/sapphire) loaded with a viscous liquid are presented and discussed as well.Attenuation; Dispersion; Layered piezoelectric medium; Surface wave; Viscous liquidAcoustic dispersion; Acoustic impedance; Acoustic surface wave devices; Attenuation; Computational methods; Interfaces (materials); Lithium niobate; Matrix algebra; Tensors; Viscosity of liquids; Layered piezoelectric medium; Piezoelectric materialsjournal article10.1143/JJAP.41.54512-s2.0-0036697550WOS:000180071800092