Repulsion of polarized particles from two-dimensional materials

Abstract

Repulsion of nanoparticles, molecules and atoms from surfaces can have important applications in nanomechanical devices, microfluidics, optical manipulation and atom optics. Here, through the solution of a classical scattering problem, we show that a dipole source can experience a robust and strong repulsive force when its near-field interacts with a two-dimensional material that has a metallic character. As an example, the case of graphene is considered, showing that a broad bandwidth of repulsion can be obtained spanning the frequency range $0<\hslash \omega <(5/3){\mu }_c$, where ${\mu }_c$ is the chemical potential of graphene, tuneable electrically or by chemical doping.

References in corpus (9)

• Graphene plasmonics
• Two-Dimensional Material Nanophotonics
• Dyadic Green's Functions and Guided Surface Waves for a Surface Conductivity Model of Graphene
• Magneto-optical conductivity in Graphene
• On the mechanism of hydrophilicity of graphene
• Dynamic Consequences of Optical Spin-Orbit Interaction
• Lateral Casimir force on a rotating particle near a planar surface
• Plasmon scattering from single sub-wavelength holes
• Directional spontaneous emission and lateral Casimir-Polder force on an atom close to a nanofiber

Cited by in corpus (5)

• Giant Lateral Optical Forces on Rayleigh Particles near Hyperbolic and Extremely Anisotropic Metasurfaces
• Optical forces from near-field directionalities in planar structures
• Optical chiral sorting forces and their manifestation in evanescent waves and nanofibres
• Radiation forces and torques in optics and acoustics
• Optical magnetic dipole levitation using a plasmonic surface