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

Metamaterials with a Dirac-like cone dispersion at the center of the Brillouin zone behave
like an isotropic and impedance-matched zero refractive index material at the Dirac-point …

The purpose of this work is to investigate the propagation of surface waves through
periodically arranged built-up steel section (resonator) in single and multiple layered soil …

Topological phononic states, which facilitate unique acoustic transport around defects and
disorders, have significantly revolutionized our scientific cognition of acoustic systems. Here …

Phonons play a key role in the physical properties of materials, and have long been a topic
of study in physics. While the effects of phonons had historically been considered to be a …

Dualities are mathematical mappings that reveal links between apparently unrelated
systems in virtually every branch of physics,,,,,,–. Systems mapped onto themselves by a …

Robust edge states of the phononic crystals (PnCs) with the Dirac points fixed at corners or
centers of the Brillouin zones (BZs) have received wide attentions. Here, we show that the …

Accidental degeneracy plays an important role in the generation of novel band dispersions.
Photonic structures that exhibit an accidental Dirac-like conical dispersion at the center of …

In condensed matter physics, topologically protected edge transportation has drawn
extensive attention over recent years. Thus far, the topological valley edge states have been …

Acoustic topological insulators have revolutionized our understanding of acoustic wave
propagation, providing a robust way to manipulate acoustic waves. Acoustic switches offer …