Thickness-twist waves in the nanoplates with flexoelectricity

The effects of flexoelectricity on thickness-twist waves propagating in the nanoplates are analytically investigated. Detailed calculations are performed for nonpiezoelectric material using the method of reverberation-ray matrix (MRRM), by which the numerical instability usually encountered in the conventional methods can be successfully avoided. Based on the derived characteristic equation, the dispersion relations, phase velocity and group...