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Negative permeability metamaterial

A technology of negative magnetic permeability and metamaterials, applied in the field of metamaterials, can solve the problems of high resonance frequency and inability to achieve isotropy, and achieve the effect of lower frequency, good development prospects and strong practicability

Active Publication Date: 2012-07-18
KUANG CHI INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an isotropic negative magnetic permeability metamaterial with a lower resonance frequency in view of the fact that the negative magnetic permeability metamaterial in the prior art has a high resonance frequency and cannot achieve isotropy

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] The present invention provides a negative magnetic permeability metamaterial, which includes dielectric substrates 2 and 3 and a microstructure layer 1 fixed on the dielectric substrate. Microstructures 4 are periodically arrayed on the microstructure layer 1. The microstructures 4 consist of four Rectangular helical metal wires with equal lengths are nested at equal intervals. The microstructure 4 is rotated 90°, 180°, and 270° around its rotational symmetry center and coincides with the initial microstructure respectively. For a schematic diagram of the microstructure 4, see figure 2 , this symmetric microstructure can realize the isotropy of metamaterials.

[0025] The composition principle and beneficial effects of the negative magnetic permeability metamaterial of the embodiment of the present invention will be described in detail below w...

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Abstract

The invention relates to a negative permeability metamaterial comprising a dielectric substrate and a microstructure layer fixed on the dielectric substrate. Microstructures are arrayed periodically on the microstructure layer; four spiral metal lines with identical lengths are nested at an equal interval to form each of the microstructures; and after the microstructures make rotation by 90 degrees, 180 degrees and 270 degrees respectively along their rotation symmetric centers, the rotated microstructures are superposed with initial microstructures. On the premise that negative permeability is realized, utilization of the negative permeability metamaterial enables resonant frequency of the metamaterial to be effectively reduced and requirements on a negative permeability value under the special circumstances to be met; and besides, the manufactured metamaterial accords with isotropy. Moreover, the negative permeability metamaterial is of great importance in development of the metamaterial industry and thus has good application prospects.

Description

【Technical field】 [0001] The invention relates to the field of metamaterials, in particular to a negative magnetic permeability metamaterial. 【Background technique】 [0002] At present, there have been a lot of research on magnetic permeability in the international community, among which the research on positive magnetic permeability has become mature, and the research on negative magnetic permeability metamaterials is now a hot research topic at home and abroad. Negative magnetic permeability has Quantum polarization can polarize incident waves, so it has a wide range of effects, such as magnetic resonance imaging in the field of medical imaging. Negative magnetic permeability materials can enhance the imaging effect of electromagnetic waves. In addition, negative magnetic permeability materials It also plays an important role in lens research. In the field of engineering, magnetic permeability usually refers to relative magnetic permeability, which is the absolute magnetic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00
Inventor 刘若鹏赵治亚郭洁余铨强
Owner KUANG CHI INST OF ADVANCED TECH