Lateral recoil optical forces on nanoparticles near nonreciprocal surfaces

Abstract

We investigate lateral recoil forces exerted on nanoparticles located near plasmonic platforms with in-plane nonreciprocal response. To this purpose, we first develop a comprehensive theoretical framework based on the Lorentz force within the Rayleigh approximation combined with nonreciprocal Green's functions and then derive approximate analytical expressions to model lateral recoil forces, demonstrating their explicit dependence on the dispersion relation of the system and unveiling the mechanisms that govern them. In particular, a dominant lateral recoil force component appears due to the momentum imbalance of nonreciprocal surface plasmons supported by the platform. This force can be orders of magnitude larger than other recoil force components, acts only along or against the direction of the external bias, and is quasi-independent of the direction, polarization, and wavelength of the incident plane wave. Lateral recoil forces are explored using drift-biased graphene metasurfaces, a platform that is also proposed to sort nanoparticles as a function of their size. Nonreciprocal plasmonic systems may enable new venues to trap, bind, and manipulate nanoparticles and to alleviate some of the challenges of conventional optical tweezers.

arXiv comment39 pages - 6 figures - 3 tables

References in corpus (26)

• Topological Photonics
• Graphene plasmonics
• Spin-orbit interactions of light
• Directional visible light scattering by silicon nanoparticles
• Magneto-optical trapping of a diatomic molecule
• Lateral Optical Force On Chiral Particles Near a Surface
• Janus and Huygens' dipolar sources for near-field directionality
• Polarization Controlled Directional Scattering for Nanoscopic Position Sensing
• High-Field Electrical and Thermal Transport in Suspended Graphene
• Surface plasmon polariton assisted optical pulling force
• Plasmonic Optical Tweezers based on Nanostructures: fundamentals, advances and prospects
• Optical Trapping of an Ion
• Fizeau Drag in Graphene Plasmonics
• Efficient Fizeau Drag from Dirac electrons in monolayer graphene
• Electric current induced unidirectional propagation of surface plasmon-polaritons
• Negative Landau damping in bilayer graphene
• Plasmon scattering from single sub-wavelength holes
• Fluctuation-induced forces on an atom near a photonic topological material
• Unidirectional and diffractionless surface plasmon-polaritons on three-dimensional nonreciprocal plasmonic platforms
• Non-Reciprocal and Collimated Surface Plasmons in Drift-biased Graphene Metasurfaces
• Spontaneous lateral atomic recoil force close to a photonic topological material
• Drift-induced modifications to the dynamical polarization of graphene
• Giant Lateral Optical Forces on Rayleigh Particles near Hyperbolic and Extremely Anisotropic Metasurfaces
• Non-Reciprocal Hyperbolic Propagation over Moving Metasurfaces
• Optical forces from near-field directionalities in planar structures
• Low-Power Optical Traps using Anisotropic Metasurfaces: Asymmetric Potential Barriers and Broadband Response