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 …

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 …

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 …

Topological acoustics is an emerging field that lies at the intersection of condensed matter
physics, mechanical structural design and acoustics engineering. It explores the design and …

Topological protected wave engineering in artificially structured media is at the frontier of
ongoing metamaterials research that is inspired by quantum mechanics. Acoustic analogues …

Architected materials that control elastic wave propagation are essential in vibration
mitigation and sound attenuation. Phononic crystals and acoustic metamaterials use band …

Abstract Machine learning (ML), as a component of artificial intelligence, encourages
structural design exploration which leads to new technological advancements. By …

Acoustic metamaterials (AMM) and phononic crystals (PC) have the potential to unfold a
new wave of disruptive technologies to radically transform human interactions, sensory …

Recent advances in additive manufacturing have enabled fabrication of phononic crystals
and metamaterials which exhibit spectral gaps, or stopbands, in which the propagation of …

Metamaterials and phononic crystals (PCs) with artificially designed periodic microstructures
have attracted increasing research interests due to their unique properties that cannot be …