Topological photonics has attracted increasing attention in recent years due to the unique
opportunities it provides to manipulate light in a robust way immune to disorder and defects …

Electromagnetic (EM) metamaterials are artificially engineered materials with extraordinary
EM properties beyond the limit of existing natural materials; thus, they have been widely …

Topological band theory establishes a standardized framework for classifying different types
of topological matters. Recent investigations have shown that hyperbolic lattices in non …

Thouless pump provides robust ways to realize quantized transport of waves and particles,
and it casts the static 2D quantum Hall effect onto 1D dynamic systems where one of the …

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Originally a pure mathematical concept, topology has been vigorously developed in various
physical systems in recent years, and underlies many interesting phenomena such as the …

Inspired by the newly emergent valleytronics, great interest has been attracted to the
topological valley transport in classical metacrystals. The presence of nontrivial domain-wall …

Owing to the chirality of Weyl nodes characterized by the first Chern number, a Weyl system
supports one-way chiral zero modes under a magnetic field, which underlies the celebrated …

Non-Abelian phenomena arise when the sequence of operations on physical systems
influences their behaviors. By possessing internal degrees of freedom such as polarization …

This paper investigates the higher-order topological behavior of elastic wave metamaterials
composed of L-shaped pillars attached to a plate. In this system, the multi-dimensional …