The control of propagation direction or path of edge states is difficult when the chirality of the
excitation source and the boundary structures are determined. Here, we studied a frequency …

Based on the concept of band topology in phonon dispersion, we designed a topological
phononic crystal in a thin plate for developing an efficient elastic waveguide. Despite that …

Topological phononic crystals (PnCs) with topologically protected boundary states have
important applications in the fields of acoustic wave transmission and control. However …

The remarkable properties of topological insulators have inspired numerous studies on
topological transport for bulk waves, but the demonstrations of topological edge states with …

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 …

Valley states, labeling the frequency extrema in momentum space, carry a new degree of
freedom (valley pseudospin) for topological transport of sound in sonic crystals. Recently …

Valley topological phononic crystals (PCs) have attracted wide attention due to the
topological properties of their edge states. In general, valley interface states can exist in the …

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 …

Here, a broadband topological valley-locked waveguide state (TVWS) of elastic wave with
adjustable mode width is reported in the phononic crystal plate with asymmetric double …

Acoustic metamaterials have provided a versatile platform to explore more degrees of
freedom for tunable topological wave manipulation. Recently, extended topological interface …