The concept of a metasurface opens new exciting directions to engineer the refraction
properties in both optical and acoustic media. Metasurfaces are typically designed by …

Two major challenges are often encountered in wave manipulation involving coupled
bending and longitudinal modes. First, the coupling phenomena are generally governed by …

Achieving total mode conversion from longitudinal to shear waves for a broad incident angle
has been a big scientific challenge in elastic fields, which was impossible to be achieved in …

Metasurface, which does not exist in nature, has exhibited exotic essence on the
manipulation of both electromagnetic and acoustic waves. In this paper, the concept of …

For actual realization of full-power longitudinal-to-transverse (transverse-to-longitudinal)
mode-converting transmission, we propose a single-phase “monolayer” anisotropic …

The vibration properties of two-dimensional (2D) finite acoustic metamaterials (AMs)
consisting of discrete masses and springs are investigated in this paper. In order to clarify …

The effect of anisotropic mass density on wave propagation in acoustic/elastic metamaterials
is presented in this research. The use of microstructures to achieve mass anisotropy in …

A new two-dimensional periodic elastic metamaterial system is proposed, which exhibits
multiple local resonances and can generate negative effective parameters. In certain …

Due to the complex polarizations of waves in elastic media, achieving broadband wave
engineering in elastic metamaterials (EMMs) proves to be much more difficult than in the …

The bimodal quarter-wave impedance matching theory, with which an incident longitudinal
(transverse) wave can be completely converted to a transmitted transverse (longitudinal) …