Analysis of surface acoustic wave in a polymer-coated piezo-electro-magnetic structure with micro-inertia effect

This paper deals with micro-inertia effect on the shear horizontal wave (SHwave) through a piezo-electro-magnetic structure with polymer coating. At the nanoscale, there are several naturally occurring difficulties with acoustic waves. Consideration of micro-inertia effect reflects the true dispersion characteristics in nanostructures. The polymer coating is considered a Kelvin-Voigt-type viscoelastic material with an inertia gradient effect. The viscoelastic polymer can be synthesized from various bio-based substances with specific applications. The non-classical constitutive equations are derived for the mediums using the variation principles. Separation of variable technique for differential equations is used to deduce the dispersion relation for SH-wave propagation. Numerical analysis and graphical representation are carried out to explain the effects of micro-inertia and viscoelasticity parameters. The study's findings hold promise for developing surface acoustic wave (SAW) devices tailored for bio/chemical detection. Leveraging the unique electro-magneto characteristics of the composite material, there is potential for engineering magnetic field sensors that exhibit enhanced sensitivity and dynamic variation. This suggests practical applications in creating more effective and responsive sensors for a range of bio and chemical sensing purposes.