Features of electromagnetic waves in a complex plasma due to surface plasmon resonances on macroparticles

TL;DR

This paper investigates how surface plasmon resonances on macroparticles in complex plasma alter electromagnetic wave propagation, leading to modified permittivity, wave branches, and band gaps, with implications for dusty plasma experiments.

Contribution

It provides a detailed analysis of surface plasmon effects on electromagnetic properties in complex plasma with spherical inclusions, highlighting new resonance-induced phenomena.

Findings

Surface plasmon resonances significantly modify plasma permittivity.

Resonances create new electromagnetic wave branches.

Band gaps in wave propagation are identified.

Abstract

The dielectric properties of complex plasma containing either metal or dielectric spherical inclusions (macroparticles, dust) are investigated. We focus on surface plasmon resonances on the macroparticle surfaces and their effect on electromagnetic wave propagation. It is demonstrated that the presence of surface plasmon oscillations significantly modifies plasma electromagnetic properties by resonances and cutoffs in the effective permittivity. This leads to related branches of electromagnetic waves and to the wave band gaps. The results are discussed in the context of dusty plasma experiments.