In solid state physics, a bandgap (BG) refers to a range of energies where no electronic
states can exist. This concept was extended to classical waves, spawning the entire fields of …

The introduction of engineered resonance phenomena on surfaces has opened a new
frontier in surface science and technology. Pillared phononic crystals, metamaterials, and …

Band gaps appear in the frequency spectra of periodic materials and structures. In this work
we examine flexural wave propagation in beams and investigate the effects of the various …

Flexible manipulation of elastic and acoustic waves through phononic meta-structured
materials (PMSMs) has attracted a lot of attention in the last three decades and shows a …

By using the finite element method and a “coarse to fine” two-stage genetic algorithm as the
forward calculation method and the inverse search scheme, respectively, we perform both …

In this paper, we present a design of locally resonant (LR) beams using periodic arrays of
beam-like resonators (or beam-like vibration absorbers) attached to a thin homogeneous …

The development of phononic crystals, especially their interaction with topological
insulators, allows exploration of the anomalous properties of acoustic/elastic waves for …

We consider two-dimensional phononic crystals formed from silicon and voids, and present
optimized unit-cell designs for (1) out-of-plane,(2) in-plane, and (3) combined out-of-plane …

The objective of this paper is to present a peer-review of the literature and trends
surrounding the design of phononic crystals (PnCs) using topology optimization methods …

The design of periodic microstructural composite materials to achieve specific properties has
been a major area of interest in material research. Tailoring different physical properties by …