| Autor: |
Sergei A. Tretyakov, Theodoros T. Koutserimpas, Mohammad Sajjad Mirmoosa, G. A. Ptitcyn, Romain Fleury |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials). |
| DOI: |
10.1109/metamaterials49557.2020.9285035 |
| Popis: |
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. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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