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 …

Based on the quantum valley Hall effect analogy, this work proposes a phononic crystal
plate with ligament-type beams to obtain the topological valley transmission of elastic …

In this numerical study, we propose dual-modulated topological pillared phononic crystal
(PnC) plates and demonstrate their application in achieving frequency-selective …

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 …

Topological waveguide states in condensed matter physics systems show significant
potential for applications, such as high-capacity information communication and energy …

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 …