From Polarizability to Effective Permittivity of Time-Varying Materials

M. S. Mirmoosa, T. T. Koutserimpas, G. A. Ptitcyn, S. A. Tretyakov, R. Fleury

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

In this talk, we describe excitation of time-varying dipolar particles (time-modulated meta-atoms) by external time-varying fields from a nonstationary and causal perspective. For a time-harmonic excitation, we introduce a complex-valued function, called temporal complex polarizability, and use this function to study a classical electron through the equation of motion whose damping coefficient and natural frequency are changing in time. We theoretically derive the temporal complex permittivity corresponding to time-varying media formed by timemodulated meta-atoms and explicitly show the differences with the conventional macroscopic Drude-Lorentz model.

Original languageEnglish
Title of host publication2020 14th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2020
PublisherIEEE
Pages6-8
Number of pages3
ISBN (Electronic)9781728161044
DOIs
Publication statusPublished - 27 Sep 2020
MoE publication typeA4 Article in a conference publication
EventInternational Congress on Artificial Materials for Novel Wave Phenomena - New York City, United States
Duration: 27 Sep 20203 Oct 2020
Conference number: 14

Conference

ConferenceInternational Congress on Artificial Materials for Novel Wave Phenomena
Abbreviated titleMetamaterials
Country/TerritoryUnited States
CityNew York City
Period27/09/202003/10/2020

Fingerprint

Dive into the research topics of 'From Polarizability to Effective Permittivity of Time-Varying Materials'. Together they form a unique fingerprint.

Cite this