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Love-type surface waves in nonlocal elastic layer over a flexoelectric solid half-space

Nanomechanics of Structures and Materials, Page: 111-132
2024
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Book Chapter Description

Flexoelectricity is inherently a size-dependent effect, which becomes more significant in nanoscale systems. In this chapter, the effects of nonlocality and flexoelectricity on the Love wave propagation in an isotropic solid layer deposited on a transversely isotropic piezoelectric substrate are investigated. The general surface wave solutions in flexoelectric solid half-space and nonlocal elastic layer are obtained. The appropriate boundary and interface conditions are applied to obtain the dispersion equations for metallized (electrical shorted) and nonmetallized (electrical open) cases. For a particular material model of PZT-5H layer over LiNbO 3 half-space, the dispersion equations are solved for both electrically shorted and open cases. The phase speed is found to be complex. The effects of nonlocality, flexoelectricity, and thickness of layer on real and imaginary parts of phase speed are shown graphically.

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