Artificial Electromagnetic Materials with Negative Magnetic Permeability

Abstract

The invention relates to an artificial electromagnetic material with negative magnetic permeability, which comprises at least one material sheet, wherein each material sheet comprises a substrate and a plurality of artificial microstructures attached to the surface of the substrate and formed by conductive filaments; and each artificial microstructure comprises an opening resonant ring formed by one filament and at least three electrode wires extending to the interior of the ring from different positions on the opening resonant ring. With the adoption of the artificial microstructure having the structure, an absolute value of the negative magnetic permeability of the artificial electromagnetic material can be increased obviously, so that a negative magnetic permeability effect is strengthened, and the requirement on a negative magnetic permeability value under specific conditions is met.

Description

technical field [0001] The invention relates to the field of electromagnetism, and more specifically relates to an artificial electromagnetic material with negative magnetic permeability. Background technique [0002] At present, there have been a lot of research on magnetic permeability in the world. Positive magnetic permeability has been relatively mature, but the current society urgently needs negative magnetic permeability metamaterials, so it plays a great role because it has very special functions, such as quantum Polarization can polarize the incident wave, so it has a wide range of action. For example, in the field of medical imaging, it can enhance the imaging effect of electromagnetic waves. It is also very useful in lens research and has a good application prospect. Therefore, the negative permeance is one of the hot research topics at home and abroad. [0003] In engineering practice, the magnetic permeability usually refers to the relative magnetic permeabilit...

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