Phononic crystals and acoustic metamaterials are periodic structures whose effective
properties can be tailored at will to achieve extreme control on wave propagation. Their …

Metamaterials (MMs), which include phononic crystals (PCs) as a particular type, exhibit
anomalous wave propagation properties through artificial design of topologies or lattice …

Achieving vibration and/or wave attenuation with locally resonant metamaterials has
attracted a great deal of attention due to their frequency dependent negative effective mass …

Acoustic metamaterials with passive dissipative elements have demonstrated excellent
underwater low-frequency sound absorption abilities, but still suffer from the narrow …

In this work, we experimentally achieve 1-kHz-wide directional band gaps for elastic waves
spanning a frequency range from approximately 8 to 11 kHz. One-way propagation is …

This paper combines negative capacitance (NC) with inductance (L) to enlarge low-
frequency bandgap width in locally resonant piezoelectric metamaterials. The studied …

Recently, a new type of metasurface namely coding metasurface has emerged as a new
technology in manipulating waves. Based on its R-bit, a coding metasurface utilizes 2 R of …

Different from the common tunable elastic metasurface (TEM), like piezoelectric active
metasurface, in this paper, we propose a TEM composed of impedance-adjustable subunits …

Steering flexural waves in thin plates benefits several applications, including vibration
energy harvesting and micro-electro-mechanical systems (MEMS). This study proposes a …

One dimensional active metamaterials with broadband controllable bending stiffness are
studied in this paper. The key unit of the active metamaterials is composed of a host beam …