Phononic crystals (PCs) and metamaterials (MMs) can exhibit abnormal properties, even far
beyond those found in nature, through artificial design of the topology or ordered structure of …

Gradient-index (GRIN) phononic crystals (PnCs) offer an excellent platform for various
applications, including energy harvesting via wave focusing. Despite its versatile wave …

Topological insulators (TIs) have recently received significant attention due to the promise of
lossless transport of various types of energy. Despite this interest, one outstanding issue is …

Tuning the band gap by mechanically generating deformation of soft phononic crystals
provides an effective means to manipulate the propagation of acoustic waves. In this paper …

In this investigation, the nonreciprocal transmission of elastic waves is achieved by the
combination of asymmetric structure and nonlinear material. Our attention is focused on the …

Membrane-type metamaterials have shown a fantastic capacity for manipulating acoustic
waves in the low frequency range. They have the advantages of simple geometry, light …

In this study, the band structure and directional characteristics of the hexagonal lattice with
Koch snowflake are investigated. The finite element method and Bloch theorem are used to …

Soft electroactive materials can undergo large deformation subjected to either mechanical or
electrical stimulus, and hence, they can be excellent candidates for designing extremely …

Soft materials can be designed with a functionally graded (FG) property for specific
applications. Such material inhomogeneity can also be found in many soft biological tissues …

The effective dynamic properties of specific periodic structures involving rubber-like
materials can be adjusted by pre-strain, thus facilitating the design of custom acoustic filters …