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 …

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 concept of topological energy bands and their manifestations have been demonstrated
in condensed matter systems as a fantastic paradigm toward unprecedented physical …

Gauge fields play a major role in understanding quantum effects. For example, gauge flux
insertion into single unit cells is crucial towards detecting quantum phases and controlling …

Weyl semimetals (WSMs) exhibit phenomena such as Fermi arc surface states, pseudo-
gauge fields and quantum anomalies that arise from topological band degeneracy in …

High-precision 3D printing technology opens to almost endless opportunities to design
complex shapes present in tailored architected materials. The scope of this work is to review …

The relation between thermal transport and gravity was highlighted in the seminal work by
Luttinger in 1964, and has been extensively developed to understand thermal transport …

Symmetry plays a key role in modern physics, as manifested in the revolutionary topological
classification of matter in the past decade. So far, we seem to have a complete theory of …

Wave trapping and manipulation are at the heart of modern integrated photonics and
acoustics. Grand challenges emerge on increasing the integration density and reducing the …

Owing to the chirality of Weyl nodes, the Weyl systems can support one-way chiral zero
modes under a strong magnetic field, which leads to nonconservation of chiral currents—the …