A negative magnetic permeability metamaterial and MRI magnetic signal enhancement device
A technology of negative magnetic permeability and metamaterials, applied in the field of metamaterials, can solve the problem of high resonance frequency, achieve good imaging effects, good development prospects, and signal enhancement effects
Active Publication Date: 2017-02-15
KUANG CHI INST OF ADVANCED TECH
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0008] The technical problem to be solved by the present invention is to provide a negative magnetic permeability metamaterial with a lower resonant frequency in view of the defect that negative magnetic permeability metamaterials in the prior art realize negative magnetic permeability with higher resonance frequency
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0034] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0035] The present invention provides a negative magnetic permeability metamaterial, such as figure 2 As shown, it includes a substrate 2 and a plurality of artificial microstructures 1 arranged in a periodic array on both sides of the substrate 2. The artificial microstructure 1 is composed of two first artificial microstructure units 11 and two second artificial microstructures arranged in a circular array. The artificial microstructure units 22 are combined, and the two first artificial microstructure units 11 and the two second artificial microstructure units 22 are composed of two right-angled triangular spiral rings whose hypotenuses face each other.
[0036] 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 with refere...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a metamaterial with negative magnetic permeability, and an MRI magnetic signal enhancement device. The metamaterial with the negative magnetic permeability comprises a substrate and a plurality of artificial microstructures which are arranged on the two sides of the substrate in a periodicity array mode, wherein each artificial microstructure is composed of two first artificial microstructure units and two second artificial microstructure units, the first artificial microstructure units and the second artificial microstructure units are arranged in a ring-shaped array mode, each artificial microstructure unit is composed of two right-angle triangular spiral winding rings, and hypotenuses of the two right-angle triangular spiral winding rings are opposite to each other. The metamaterial with the negative magnetic permeability can effectively reduce resonant frequency. In addition, the metamaterial with negative magnetic permeability can be widely applied to the MRI magnetic signal enhancement device; due to the fact that the artificial microstructures of the metamaterial with the negative magnetic permeability are magnetic microstructures, when the frequency of each magnetic microstructure is set to be the same as the working frequency of an MRI imaging device under the condition of negative magnetic permeability, magnetic signals received by a receiving coil can be strengthened, the effect of imaging is strengthened. The metamaterial with the negative magnetic permeability, and the MRI magnetic signal enhancement device have good development and application prospect.
Description
[0001] 【Technical field】 [0002] The invention relates to the field of metamaterials, in particular to a negative magnetic permeability metamaterial and an MRI magnetic signal enhancement device. [0003] 【Background technique】 [0004] 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 r...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/00G01R33/56A61B5/055
Inventor 刘若鹏栾琳郭洁马伟涛
Owner KUANG CHI INST OF ADVANCED TECH