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 language | English |
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Title of host publication | 2020 14th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2020 |
Publisher | IEEE |
Pages | 6-8 |
Number of pages | 3 |
ISBN (Electronic) | 9781728161044 |
DOIs | |
Publication status | Published - 27 Sept 2020 |
MoE publication type | A4 Conference publication |
Event | International Congress on Artificial Materials for Novel Wave Phenomena - New York, United States Duration: 27 Sept 2020 → 3 Oct 2020 Conference number: 14 |
Conference
Conference | International Congress on Artificial Materials for Novel Wave Phenomena |
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Abbreviated title | Metamaterials |
Country/Territory | United States |
City | New York |
Period | 27/09/2020 → 03/10/2020 |