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Materials with Negative Permittivity or Negative Permeability-Review, Electrodynamic Modelling, and Applications
1Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland.
Materials (Basel, Switzerland)
|January 25, 2025
Summary
This review explores natural materials with negative permittivity or permeability, like plasma and metals. These materials can form plasmonic resonators, storing significant energy and enabling phenomena like lightning plasma balls.
Area of Science:
- Electromagnetism
- Materials Science
- Plasma Physics
Background:
- Natural materials exhibiting negative permittivity or permeability are crucial for advanced electromagnetic applications.
- Understanding plasmonic resonators is key to manipulating light-matter interactions.
Purpose of the Study:
- To review natural materials with negative permittivity/permeability.
- To analyze electric and magnetic plasmon resonances in spherical samples.
- To explain associated physical phenomena.
Main Methods:
- Review of existing literature on natural materials with negative electromagnetic properties.
- Rigorous electrodynamic analysis of plasmon resonances.
- Comparison of theoretical results with experimental data and other methods (Mie scattering, free oscillation).
Main Results:
- Materials like plasma, metals, superconductors, and ferromagnets can store substantial electric/magnetic energy.
- Analysis reveals conditions for creating plasmonic resonators.
- Similarities and differences in permittivity/permeability tensors for magnetized plasma and ferromagnets are highlighted.
Conclusions:
- Electrodynamic analysis explains phenomena like unequal energy storage in resonators and the role of losses.
- The study confirms the theoretical possibility of lightning plasma balls.
- Provides a foundation for designing novel plasmonic devices.
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