Wave-absorption metamaterials have been an enduring topic over the past two decades,
propelled not only by scientific advances, but also by their extensive application potential. In …

In this paper, a new class of multi-ligament derived structures is proposed. Based on the
finite element method and Bloch's theorem, the bandgap characteristics and transmission …

A predictive design, analysis, and optimization tool that quickly and accurately captures the
frequency response of locally resonant metamaterials is presented. A reduced order model …

Optimization of functionally graded metamaterial arrays with a high dimensional and
continuous geometric design space is cumbersome and could be accelerated via machine …

Metamaterials with wide frequency bandgaps have broad applications in engineering. In this
work, a diatomic mass-in-mass metamaterial is proposed. This metamaterial can produce …

Dictated by the causality constraint, the existence of a minimum absorber thickness has set
an almost insurmountable obstacle for the remediation of ultralow-frequency noise in the …

Acoustic metamaterials and phononic crystals represent a promising platform for the
development of noise-insulating systems characterized by a low weight and small thickness …

The increasing interest in miniaturizing acoustic devices has made accurate and efficient
models of acoustic viscous and thermal losses progressively more important. This is …

In a passive lossy acoustical system, sum rules derived from passivity explicitly relate the
broadband response to the spatial dimension of the system, which provide important design …

Open cavities are often an essential component in the design of ultra-thin subwavelength
metasurfaces and a typical requirement is that cavities have precise, often low frequency …