Optical pulling of multiple Rayleigh sized particles simultaneously using a Metasurface

Abstract

Creating pulling force for several sorts of particles simultaneously on a single setup is very difficult and unusual in the literature. In this article, a single nanometer-sized metasurface was used to generate an optical pulling force for multiple particles simultaneously. Initially, three particles were the main focus, but this was eventually expanded to seven particles to strengthen the findings based on multiparticles. An incident beam (varying the wavelength from 640nm to 1200nm) is used to produce surface plasmon polariton waves, which were afterwards responsible for pulling the Rayleigh sized (50nm in our instance) particles. By generating a dual non-paraxial surface plasmon polariton (SPP) energized plasmonic complex field, which induces completely different behaviors in Rayleigh scatterers with dissimilar material properties, the proposed setup promotes effective on-chip material-based optical pulling of silica (a dielectric object), gold (a plasmonic object), and chiral nanospheres.