title: Influence of material parameters on acoustic wave propagation modes in ZnO/Si bi-layered structures.
abstract: The influences of material properties on acoustic wave propagation modes in ZnO/Si bi-layered structures are studied. The transfer matrix method is used to calculate dispersion relations, wave field distributions, and electromechanical coupling coefficients of acoustic wave propagation modes in ZnO/Si bi-layered systems, in which the thickness of the substrate is of the same order of magnitude as the wavelength of the propagating wave modes. The influences of the thin film parameters on the acoustic wave propagation modes and their electromechanical coupling coefficients of the wave modes also are obtained. In addition, some experimental results for characterizing the wave propagation modes and their frequencies have also been obtained, which agree well with the theoretical predictions.
authors.affiliation: Lab of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing, 210093, China. paslab@nju.edu.cn
authors.forename: Hui-dong
authors.initials: HD
authors.lastname: Gao
authors.forename: Shu-Yi
authors.initials: SY
authors.lastname: Zhang
authors.forename: Xue
authors.initials: X
authors.lastname: Qi
authors.forename: Kiyotaka
authors.initials: K
authors.lastname: Wasa
authors.forename: Hao-Dong
authors.initials: HD
authors.lastname: Wu
mesh_terms: D000162:Acoustics / Q000295:instrumentation*; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008422:Materials Testing; D008956:Models, Chemical; D011829:Radiation Dosage; D011874:Radiometry / Q000379:methods; D012825:Silicon / Q000737:chemistry* / Q000528:radiation effects; D014159:Transducers; D014463:Ultrasonography / Q000295:instrumentation* / Q000379:methods; D015034:Zinc Oxide / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D015034:Zinc Oxide; D012825:Silicon