Journal ArticleDOI
Magnetism from conductors and enhanced nonlinear phenomena
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In this paper, it was shown that microstructures built from nonmagnetic conducting sheets exhibit an effective magnetic permeability /spl mu/sub eff/, which can be tuned to values not accessible in naturally occurring materials.Abstract:
We show that microstructures built from nonmagnetic conducting sheets exhibit an effective magnetic permeability /spl mu//sub eff/, which can be tuned to values not accessible in naturally occurring materials, including large imaginary components of /spl mu//sub eff/. The microstructure is on a scale much less than the wavelength of radiation, is not resolved by incident microwaves, and uses a very low density of metal so that structures can be extremely lightweight. Most of the structures are resonant due to internal capacitance and inductance, and resonant enhancement combined with compression of electrical energy into a very small volume greatly enhances the energy density at critical locations in the structure, easily by factors of a million and possibly by much more. Weakly nonlinear materials placed at these critical locations will show greatly enhanced effects raising the possibility of manufacturing active structures whose properties can be switched at will between many states.read more
Citations
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Low Cost and Broadband Dual-Polarization Metamaterial Lens for Directivity Enhancement
TL;DR: In this paper, a far-field collimating lens for use with a circularly-polarized crossed-dipole antenna constructed from a 3D-volumetric metamaterial slab was proposed.
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Enhanced reversed Cherenkov radiation in a waveguide with double-negative metamaterials.
Zhaoyun Duan,Chen Guo,Min Chen +2 more
TL;DR: A theoretical method using a charged particle beam bunch to enhance RCR in a circular waveguide partially filled with anisotropic double-negative metamaterials (DNMs) and shows that the radiated energy can be effectively enhanced by increasing the charged particle number in a short bunch and thus be readily detectable.
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Enhancing the Sensitivity of Dielectric Sensors With Multiple Coupled Complementary Split-Ring Resonators
TL;DR: In this paper, the authors presented a new concept for sensitivity enhancement of dielectric sensors by loading a microstrip line with multiple coupled resonators based on the interresonator coupling mechanism.
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Three-frequency parametric amplification in magneto-inductive ring resonators
TL;DR: In this paper, the effect of de-coupling the idlers is considered and it is shown that this configuration relaxes the standard phase matching condition, and a 16-element ring resonator with varactor diodes is presented.
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Electric and magnetic properties of sub-wavelength plasmonic crystals
TL;DR: In this paper, the authors investigated the properties of sub-wavelength plasmonic crystals (SPCs), a class of two-dimensional periodic nanostructured materials with negative dielectric permittivity, with the lattice period much smaller than the wavelength of light.
References
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Plasma Losses by Fast Electrons in Thin Films
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