Journal Article10.1109/22.798002
Magnetism from conductors and enhanced nonlinear phenomena
TL;DR: 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.
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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.
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Citations
Tunable terahertz fishnet metamaterial
Cheng Ling Chang,Wei Chih Wang,Wei Chih Wang,Hong Ren Lin,Feng Ju Hsieh,Yue Bun Pun,Chi Hou Chan +6 more
TL;DR: In this article, a terahertz (THz) frequency tunable fishnet metamaterial (TFMM) using an electrically controlled polymer dispersed liquid crystal (PDLC) matrix is presented.
48
Transmission characteristics of bianisotropic metamaterials based on omega shaped metallic inclusions
TL;DR: In this paper, the transmission properties of omega shaped metallic inclusions on a dielectric medium that exhibits bianisotropic properties were investigated experimentally and numerically, and a dual transmission band was obtained by composing two different types of metamaterials that are arranged periodically.
Localized surface-plasmon resonances and negative refractive index in nanostructured electromagnetic metamaterials
TL;DR: In this article, the authors explore the extent to which the concept of localized surface-plasmon resonances can be used to explain the optical response of complementary electromagnetic metamaterials in the visible.
Microwire arrays with plasmonic response at microwave frequencies
TL;DR: In this paper, the response of three-dimensional arrays of microscopic wires was studied experimentally and it was shown that such a system can be considered as an effective plasmonic medium with a specific plasma frequency.
Nonlinear magnetoinductive waves and domain walls in composite metamaterials
Ilya V. Shadrivov,Alexander A. Zharov,Alexander A. Zharov,Nina A. Zharova,Nina A. Zharova,Yuri S. Kivshar +5 more
TL;DR: In this article, the authors describe the physics of nonlinear magnetoinductive waves in left-handed composite metamaterials and derive the coupled equations for describing the propagation of magneto-inductive wave, and show that in the nonlinear regime the magnetic response of a metammaterial may become bistable.
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