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<p>This study investigates the propagation of Rayleigh- and Love-type surface acoustic waves in one-dimensional layered half-space structures composed of hexagonal piezoelectric quasicrystals with imperfect interfacial bonding. A comprehensive mathematical framework is developed by combining wave mechanics, interfacial spring–membrane models, and dispersion relations to capture the effects of structural inhomogeneity and coupling parameters. The methodology integrates analytical modeling with numerical dispersion analysis, supported by comparative case studies between perfect and imperfect interfaces. Results reveal that interfacial imperfections significantly reduce phase velocity, alter cutoff frequencies, and enhance attenuation, thereby highlighting their critical influence on surface acoustic wave behavior. The findings provide valuable insight into optimizing sensor sensitivity, improving SAW filter performance, and designing advanced MEMS and ultrasonic devices. The novelty of this work lies in addressing both piezoelectric quasicrystal anisotropy and interfacial bonding simultaneously, which has been scarcely reported in the literature. Limitations include the absence of experimental validation and higher-dimensional modeling, which are recommended for future studies. Overall, this research offers a new theoretical basis for developing next-generation acoustic wave devices.</p>

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Numerical and computational analysis of surface waves in hexagonal piezoelectric quasicrystal layers with imperfect interfaces

  • 期刊论文

  • 发表日期：

    2026年1月7日

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  • Anjali Chaudhary,
  • G. V. Radhakrishnan,
  • Abdulkafi Mohammed Saeed,
  • Amit Patil,
  • Ohoud Aljawi,
  • Sheela Hundekari,
  • Abhinav Singhal

摘要

This study investigates the propagation of Rayleigh- and Love-type surface acoustic waves in one-dimensional layered half-space structures composed of hexagonal piezoelectric quasicrystals with imperfect interfacial bonding. A comprehensive mathematical framework is developed by combining wave mechanics, interfacial spring–membrane models, and dispersion relations to capture the effects of structural inhomogeneity and coupling parameters. The methodology integrates analytical modeling with numerical dispersion analysis, supported by comparative case studies between perfect and imperfect interfaces. Results reveal that interfacial imperfections significantly reduce phase velocity, alter cutoff frequencies, and enhance attenuation, thereby highlighting their critical influence on surface acoustic wave behavior. The findings provide valuable insight into optimizing sensor sensitivity, improving SAW filter performance, and designing advanced MEMS and ultrasonic devices. The novelty of this work lies in addressing both piezoelectric quasicrystal anisotropy and interfacial bonding simultaneously, which has been scarcely reported in the literature. Limitations include the absence of experimental validation and higher-dimensional modeling, which are recommended for future studies. Overall, this research offers a new theoretical basis for developing next-generation acoustic wave devices.