Metasurfaces are 2D artificial materials consisting of arrays of metamolecules, which are
exquisitely designed to manipulate light in terms of amplitude, phase, and polarization state …

Plasmonic gold nanoparticles have been used increasingly in solid-state systems because
of their applicability in fabricating novel sensors, heterogeneous catalysts, metamaterials …

Thirty years ago, Coullet et al. proposed that a special optical field exists in laser cavities
bearing some analogy with the superfluid vortex. Since then, optical vortices have been …

Motivated by unique topological semimetals in condensed matter physics, we propose an
effective Hamiltonian with four degrees of freedom to describe evolutions of photonic double …

A bound state in the continuum (BIC) is a nonradiating state of light embedded in the
continuum of propagating modes providing drastic enhancement of the electromagnetic field …

When metal nanoparticles are arranged in an ordered array, they may scatter light to
produce diffracted waves. If one of the diffracted waves then propagates in the plane of the …

Plasmonic biosensing has been used for fast, real-time, and label-free probing of
biologically relevant analytes, where the main challenges are to detect small molecules at …

Optical sensors are widely used for refractive index measurement in chemical, biomedical,
and food processing industries. Due to specific field distribution of the resonances, optical …

We review the progress achieved during the recent five years in immunochemical
biosensors (immunosensors) combined with nanoparticles for enhanced sensitivity. The …

Label-free optical biosensing holds great promise for a variety of applications in biomedical
diagnostics, environmental and food safety, and security. It is already used as a key tool in …