The application of topology, the mathematics of conserved properties under continuous
deformations, is creating a range of new opportunities throughout photonics. This field was …

Topological photonics is a rapidly emerging field of research in which geometrical and
topological ideas are exploited to design and control the behavior of light. Drawing inspiration …

The massless solutions to the Dirac equation are described by the so-called Weyl Hamiltonian.
The Weyl equation requires a particle to have linear dispersion in all three dimensions …

Topological photonic states, inspired by robust chiral edge states in topological insulators,
have recently been demonstrated in a few photonic systems, including an array of coupled on-…

Nucleotide sequences from a total of 421 HEV isolates were retrieved from Genbank and
analysed. Phylogenetically, HEV was classified into four major genotypes. Genotype 1 was …

Leptospirosis is a widely spread disease of global concern. Infection causes flu-like episodes
with frequent severe renal and hepatic damage, such as haemorrhage and jaundice. In …

We report a new type of phononic crystals with topologically nontrivial band gaps for both
longitudinal and transverse polarizations, resulting in protected one-way elastic edge waves. …

The Dirac cone underlies many unique electronic properties of graphene 1 and topological
insulators, and its band structure—two conical bands touching at a single point—has also …

Weyl points and line nodes are three-dimensional linear point and line degeneracies
between two bands. In contrast to two-dimensional Dirac points, which are their lower-dimensional …

Optical bound states in the continuum (BICs) have recently been realized in photonic crystal
slabs, where the disappearance of out-of-plane radiation turns leaky resonances into …