Optical forces in photonic Weyl system

Abstract Topological photonics has attracted extensive attention, since it allows for a platform to explore and exploit versatile nano-optics systems. In particular, the ideal Weyl metamaterials have recently been demonstrated with fascinating phenomena such as chiral zero mode negative refraction. this work, we apply photonic metamateirals into optical tweezers. Based on effective medium approach, force generated by body state of metamaterial is systematically investigated. Interestingly, theoretical results show that oblique incidence, spectra present valley around frequency magnitude exactly at frequency, forces strong circular dichroism. addition, due bi-anisotropic properties, transmissions through exhibit significant linear-to-circular polarization conversion transmitted wavefront acquires spin momenta photons, which induces abnormal particles. Our study may provide potential applications in manipulations, conversions, engineering optics.