Dynamic single microparticle manipulation in the far-field region using plasmonic vortex lens multiple arms with a circular groove.

ABSTRACT: Recent development of particle manipulation has led to high demand for dynamic optical tweezer structures. However, confining and rotating a single microparticle in the far-field region with a uniform potential distribution remains a complicated task. A plasmonic vortex lens (PVL) has been proven to easily rotate the dielectric particle owing to its effect on orbital angular momentum (OAM). Here we propose and demonstrate PVL multiple arms with a circular groove (CG). The device consists of a multiple arm spiral slit that generates a plasmonic vortex (PV) and a circular groove to bring the PV from the surface to the far-field region. Numerical simulations are performed to calculate the intensity distribution of the primary ring, the optical force and potential. The primary ring size can be

SUBMITTER: Oktafiani F 

PROVIDER: S-EPMC9846437 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature