Resonance pressure of electromagnetic radiation on metal nanoparticle

TL;DR

This paper investigates how electromagnetic radiation pressure affects spheroidal metal nanoparticles near surface plasmon resonance, showing shape and polarization influence the pressure's magnitude and direction.

Contribution

It derives expressions for resonance pressure components on non-spherical nanoparticles under different light polarizations, highlighting shape and orientation effects.

Findings

Resonance pressure depends on nanoparticle shape and orientation.

Derived tensor expressions for pressure components under polarized light.

Shape and polarization significantly influence electromagnetic pressure on nanoparticles.

Abstract

The influence of the electromagnetic irradiation pressure on a spheroidal metallic nanoparticle at the frequencies close to the surface plasmon vibrations has been considered. With the action of the radiation pressure, the polarizability of metal nanoparticle becomes a tensor quantity. The expressions for the resonance pressure components for the cases of plane-polarized and circularly polarized light have been derived. We have demonstrated that the resonance pressure can substantially depend on the shape of a non-spherical nanoparticle and its orientation with respect to the direction of light propagation and the light polarization.