Dynamics Analysis Of Plasmon Resonance Modes In Nanoparticles

TL;DR

This paper introduces a new theoretical method for analyzing the time-dependent behavior of plasmon resonance modes in nanoparticles, providing insights into their excitation, steady state, and decay characteristics.

Contribution

It presents a biorthogonal plasmon mode expansion approach for dynamic analysis, including analytical expressions under the Drude model, advancing understanding of plasmon mode behavior.

Findings

Analytical expressions for plasmon mode dynamics in the Drude model.

Temporal characteristics linked to nanoparticle shape and permittivity.

Predicts steady state amplitudes and decay of plasmon modes.

Abstract

A novel theoretical approach to the dynamics analysis of excitation of plasmon modes in nanoparticles is presented. This approach is based on the biorthogonal plasmon mode expansion and it leads to the predictions of time-dynamics of excitation of specific plasmon modes as well as their steady state amplitude and their decay. Temporal characteristics of plasmon modes in nanoparticles are expressed in terms of their shapes, permittivity dispersion relations and excitation conditions. In the case of the Drude model, analytical expressions for time-dynamics of plasmon modes are obtained.