Focusing light into a small spot is vital in many research and industrial fields. In principle, the
diffraction nature of light restricts the achievable size of a focal spot referred to as the …

Near-field optics, with the capability for nanoscale manipulation of photons and
enhancement of light-matter interactions, has drawn tremendous attentions in recent years …

Strongly confined electromagnetic (EM) fields generated by tightly focused light beams are
applied widely in nano‐optics due to their vectorial characteristics. The inclusion of the …

We propose using a Si tip-Au nanoparticle (NP) combination system in photoinduced force
microscopy (PiFM) to fundamentally improve its accuracy in the nanoscale characterization …

Based on the vectorial Rayleigh-Sommerfeld formulas under the weak nonparaxial
approximation, we investigate the propagation behavior of a lowest-order Laguerre …

In this article, we reported a new and sensitive method for characterizing rapid rotational and
translational diffusion of gold nanoparticles (GNPs) and gold nanorods (GNRs) by …

Under high numerical aperture (NA) conditions, a linearly polarized plane wave focuses to a
spot that is extended along the E-field vector, but radially polarized light is predicted to form …

Magnetic light-matter interaction plays a crucial role in nanophysics, such as in photonic
topological insulators and metamaterials. Recent advances in all-dielectric nanophotonics …

In generic three-dimensional optical fields the canonical point polarization singularities are
points of circular polarization, C points on C lines, and points of linear polarization, L points …

In this paper gold nanorings (NRs) are applied as particularly well-suited sensing elements
for mapping the radially symmetric electric fields in the high numerical aperture focus of …