Transverse optical binding for a dual dipolar dielectric nanoparticle dimer

The physical origins of the transverse optical binding force and torque beyond Rayleigh approximation have not been clearly expressed to date. Here, we present analytical expressions for a dual dipolar dielectric dimer illuminated by plane wave propagating perpendicularly axis. Using this model, explore roles hybridized electric dipolar, magnetic electric-magnetic coupling interactions in total on particles. We find significant departures from predictions approximation, particularly high-refractive-index particles, where is dominated interaction. This results an enhancement stability one four orders magnitude compared approximation. For case torque, interaction increases order magnitude. Our will help guide future experimental work