A reproducible route for tuning localized surface plasmon resonance in scattering type near-
field optical microscopy probes is presented. The method is based on the production of a …

A miniature, simplified and planar plasmonic lens based on the circular array of nano-
pinholes for on-axis beaming has been proposed and investigated systematically in the …

The efficiency of graphene-based optoelectronic devices is typically limited by the poor
absolute absorption of light. A hybrid structure of monolayer graphene with cylindrical …

We study the effect of a spiral corrugation on the outer surface of a fully metal-coated
scanning near-field optical microscopy (SNOM) probe using the finite element method. The …

The detailed understanding of the physical parameters that determine localized surface
plasmon resonances (LSPRs) is essential to develop new applications for plasmonics. A …

In this paper, we study the nanoscale-focusing effect in the far field for a spiral plasmonic
lens with a concentric annular groove by using finite-difference time domain simulation. The …

Development of all dielectric and plasmonic metamaterials with a tunable optical frequency
magnetic response creates a need for new inspection techniques. We propose a method of …

A novel adjustable three-dimensional plasmonic Archimedes spiral lens (3D PASL) has
been investigated and analyzed in detail by numerical simulations. The 3D PASL consists of …

We examine the possibility of optimizing the emission and the near-field signal of
apertureless silver and gold tips by using an optimized non-periodic grating. In this context …

We report the use of sub-wavelength confinement of light using dielectric microspheres for
enhancing transmission through the cantilever-based hollow probes used in a near-field …