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arXiv · 1707.03313

Repulsion of polarized particles from two-dimensional materials

Francisco J. Rodríguez-Fortuño·Michela F. Picardi·Anatoly V. Zayats
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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 $0<\hbarω<(5/3)μ_c$, where $μ_c$ is the chemical potential of graphene, tuneable electrically or by chemical doping.

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Francisco J. Rodríguez-Fortuño, Michela F. Picardi, Anatoly V. Zayats. 2017-07-11. Repulsion of polarized particles from two-dimensional materials. https://doi.org/10.1103/physrevb.97.205401

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