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 semimetals (TSMs) are characterized by bulk band crossings in their electronic
structures, which are expected to give rise to gapless electronic excitations and topological …

Light and sound are the most ubiquitous forms of waves, associated with a variety of
phenomena and physical effects such as rainbows and echoes. Light and sound, both …

The topological properties of an object, associated with an integer called the topological
invariant, are global features that cannot change continuously but only through abrupt …

The study of classical wave physics has been reinvigorated by incorporating the concept of
the geometric phase, which has its roots in optics, and topological notions that were …

Symmetry breaking in 2D layered materials plays a significant role in their macroscopic
electrical, optical, magnetic and topological properties, including, but not limited to, spin …

Abstract Higher-order topological insulators,,,–are a family of recently predicted topological
phases of matter that obey an extended topological bulk–boundary correspondence …

As one of the most important categories in the additive manufacturing (AM) field, powder-
based techniques, such as selective laser sintering, electron beam melting and selective …

Topological insulators with unique edge states have revolutionized the understanding of
solid-state materials. Recently, higher-order topological insulators (HOTIs), which host both …

Phonons, as the most fundamental emergent bosons in condensed matter systems, play an
essential role in the thermal, mechanical, and electronic properties of crystalline materials …