Journal ArticleDOI
Low frequency plasmons in thin-wire structures
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In this paper, a photonic structure consisting of an extended 3D network of thin wires is shown to behave like a low density plasma of very heavy charged particles with a plasma frequency in the GHz range.Abstract:
A photonic structure consisting of an extended 3D network of thin wires is shown to behave like a low density plasma of very heavy charged particles with a plasma frequency in the GHz range. We show that the analogy with metallic behaviour in the visible is rather complete, and the picture is confirmed by three independent investigations: analytic theory, computer simulation and experiments on a model structure. The fact that the wires are thin is crucial to the validity of the picture. This new composite dielectric, which has the property of negative below the plasma frequency, opens new possibilities for GHz devices.read more
Citations
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A Proposal, Design, and Analysis of Planar Feed Gasket Antennas with Modified Substrate for Multiband Vehicular Applications
TL;DR: In this paper , the Sierpinski Gasket fractal antenna was used to reduce the reflections at one or more multiband frequencies, rendering these frequencies unsuitable for usage.
Proceedings ArticleDOI
Total External Reflection at Optical Wavelengths
Rafael Piestun,Brian T. Schwartz +1 more
TL;DR: In this paper, analytical and numerical models predict total external reflection at optical wavelengths for a metal-dielectric composite material at the interface between vacuum and a medium with refractive index less than unity.
Proceedings ArticleDOI
Q-factor control in asymmetry single circular split ring resonator via positon of gap
TL;DR: In this article, the impact of the degree of asymmetric on the frequency response and its quality factor within the microwave frequency regime has been studied and the results have been shown that the resonance frequency and quality factor of an asymmetric single circular split ring resonator are strongly depended on the relations between the gap orientation and the electric field direction.
Proceedings ArticleDOI
Band structure of a periodic waveguide that include a dispersive metamaterial
TL;DR: In this paper, an electromagnetic waveguide composed of two periodic and rippled periodic surfaces was considered and an integral numerical method was applied to determine the bandgap structure of the system and the intensity field of its electromagnetic modes.
Journal ArticleDOI
Research of Epsilon-Negative Material and its Electromagnetic Shielding Effect
Yan Du,Yong Fang Bao,Yuan Wang +2 more
TL;DR: In this paper, the physical theory and mathematical modeling of one dimensional epsilon-negative (ENG) material were discussed, and it was shown that this kind of material has a great shielding effect.
References
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Journal ArticleDOI
Extremely Low Frequency Plasmons in Metallic Mesostructures
TL;DR: A mechanism for depression of the plasma frequency into the far infrared or even GHz band is proposed: Periodic structures built of very thin wires dilute the average concentration of electrons and considerably enhance the effective electron mass through self-inductance.
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Plasma Losses by Fast Electrons in Thin Films
TL;DR: In this paper, the angle energy distribution of a fast electron losing energy to conduction electrons in a thick metallic foil has been derived assuming that the conduction electron constitute a Fermi-Dirac gas and that the fast electron undergoes only small fractional energy and momentum changes.
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A Collective Description of-Electron Interactions: III. Coulomb Interactions in a Degenerate Electron Gas
TL;DR: In this article, the behavior of the electrons in a dense electron gas is analyzed quantum-mechanically by a series of canonical transformations, and the results are related to the classical density fluctuation approach and Tomonaga's one-dimensional treatment of the degenerate Fermi gas.
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Photonic band structure: The face-centered-cubic case employing nonspherical atoms.
TL;DR: A practical, new, face-centered-cubic dielectric structure which simultaneously solves two of the outstanding problems in photonic band structure and lends itself readily to microfabrication on the scale of optical wavelengths.
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A Collective Description of Electron Interactions: II. Collective vs Individual Particle Aspects of the Interactions
TL;DR: In this article, the behavior of the electrons in a dense electron gas is analyzed in terms of their density fluctuations, which are then split into two components, one component associated with the organized oscillation of the system as a whole, the so-called "plasma" oscillation, and the other component representing the random thermal motion of the individual electrons.