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 …

Thanks to the recent discovery of the magic-angle bilayer graphene, twistronics is quickly
becoming a burgeoning field in condensed matter physics. This Rapid Communication …

Tuning the band gap by mechanically generating deformation of soft phononic crystals
provides an effective means to manipulate the propagation of acoustic waves. In this paper …

Tunable acoustic metamaterials have excellent sound waves control and manipulation
properties because of their deformations under different stimuli. Pneumatic actuation has …

In elastic systems, the researchers have observed the topological valley edge states.
However, the topological valley edge states can only enable elastic waves to propagate …

Topology is the branch of mathematics studying the properties of an object that are
preserved under continuous deformations. Quite remarkably, the powerful theoretical tools …

Topological mechanics is rapidly emerging as an attractive field of research where
mechanical waveguides can be designed and controlled via topological methods. With the …

Elastic wave has wide applications, such as signal processing, sensor, and communication.
It is highly desired to control the propagation of elastic wave efficiently. Inspired by various …

Backscattering immunity of valley edge states for a monolayer sonic crystal provides a basis
for designing devices with unconventional functions. Recently, the valley edge state of a …