Fluctuation Electromagnetic Interaction Between Small Rotating Particle and a Surface

TL;DR

This paper analyzes the electromagnetic forces, torque, and heating effects on a small rotating particle near a surface, providing analytical formulas and showing the particle's stopping time is shorter than in vacuum.

Contribution

It introduces closed-form analytical expressions for electromagnetic interactions involving a rotating particle near a surface, considering frequency-dependent properties and temperature differences.

Findings

The stopping time of a rotating particle near a surface is significantly shorter than in vacuum.

Analytical formulas for attraction, torque, and heating are derived.

The study highlights the influence of near-field effects on particle dynamics.

Abstract

We study fluctuation electromagnetic interaction between small neutral rotating particle and polarizable surface. The attraction force, friction torque and heating are produced by the particle polarization and fluctuating near-field of the surface. Closed analytical expressions are found for these quantities assuming that the particle and surface are characterized by the frequency dependent polarizability and dielectric permittivity and different temperatures. It is shown that the stopping time of the rolling particle in the near-field of the surface is much less than the stopping time under uniform motion and rolling in vacuum space.