Topological elastic metamaterials have emerged as a new frontier in the quest of topological
phases in condensed matter physics. Their exotic topological properties open a wealth of …

Stable and efficient guided waves are essential for information transmission and processing.
Recently, topological valley-contrasting materials in condensed matter systems have been …

In this study, the topological valley Hall edge states of elastic waves in phononic crystals are
realized based on material differences. A phononic crystal structure with lantern rings is …

Achieving strong robustness in elastic wave routing at subwavelength scale has always
been a constant goal in practical applications such as energy harvesting, signal processing …

Phononic crystal, the artificial material, has shown the ability to guide the waves. In this
paper, we theoretically and experimentally realize interface transports by doping replacing …

We demonstrate that higher-order topological insulators with C 4 symmetry can be realized
in two-dimensional elastic phononic crystals. Both one-dimensional topological edge states …

Recently, the novel bulk–edge–corner correspondence of higher-order topological states
had attracted increasing attention. Past research studies on higher-order topological …

In this paper, we study the topological properties of subwavelength bands in elastic
phononic crystal (PC) plate hybridized with extra local resonances and analyze the band …

Topological protection wave engineering in artificially structured media is at the forefront of
metamaterials research. Acoustic analogs of electronic topological insulators have brought a …

Recently, the concept of valley pseudospin, labeling quantum states of energy extrema in
momentum space, has attracted enormous attention because of its potential as a new type of …