Metamaterial Deflecting Electromagnetic Waves via Gradient Refractive Indices
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Solution Overview
Problem
Existing metamaterials for deflecting electromagnetic waves lack flexibility and convenience in adjusting the deflection path, relying on mechanical adjustments that are not easily adaptable.
Innovation Solution
A metamaterial with a functional layer composed of multiple strip-like regions with continuously increasing refractive indices, where the geometric figures of artificial microstructures change in size to match refractive index variations, allowing for flexible and convenient deflection of electromagnetic waves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If mechanical adjustment is used to change the direction of electromagnetic waves, then the deflection can be achieved, but the flexibility and convenience of adjustment are insufficient
Solution Approach 1:
The patent applies parameter changes by varying the refractive indices in different regions of the metamaterial. The refractive index distribution is designed to change continuously across the material, with different regions having different refractive index ranges (n1 to n2, n3 to n4, etc.), enabling flexible electromagnetic wave deflection without mechanical adjustment
Solution Approach 2:
The metamaterial is divided into multiple regions with different refractive index characteristics. Each region contains artificial microstructures with specific geometric configurations, and the segmentation allows independent control of electromagnetic wave paths in different areas, achieving flexible and convenient deflection
2Reliability
If gradient index distribution is implemented in metamaterial, then electromagnetic wave deflection is achieved, but the manufacturing complexity increases
Solution Approach 1:
The patent implements local quality by designing artificial microstructures with specific geometric figures (circular, square, triangular, etc.) in different regions. Each region's microstructures have locally optimized properties matching the required refractive index, achieving reliable deflection performance while maintaining manufacturability through standardized geometric patterns
Solution Approach 2:
The metamaterial uses composite structures combining base material with artificial microstructures made of different materials (conductive material, dielectric material, magnetic material). This composite approach enables gradient index distribution through material composition rather than complex geometric variations, simplifying manufacturing
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The metamaterial achieves flexible and efficient deflection of electromagnetic waves by continuously varying refractive indices, enabling convenient manufacturing and suitable for mass production.
Implementation Method 1
When an electromagnetic wave beam is propagating from one medium to another medium, the electromagnetic wave will be refracted. When the refractive indices distribution of the material is heterogeneous, the electromagnetic wave will deflect towards locations with relatively large refractive indices.
Data Source
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AI summary
The present embodiment relates to ametamaterialfor deflecting electromagnetic wave, includes a functional layer made up by at least one metamaterial sheet layer, each of the metamaterial sheet layers including a substrate and a number of artificial microstructures attached onto the substrate. The functional layer is divided into several strip-like regions. The refractive indices in all the strip-like regions continually increase along the same direction and there are at least two adjacent first and second regions, wherein,the refractive indices in the first region continually increase from n1 to n2, the refractive indices in the second region continually increase from n3 to n4, and n2>n3. The metamaterial of the present invention that deflects electromagnetic wave has a number of regions disposed thereon. In each region, the refractive indices can continuously increase or decrease so that the electromagnetic waves within the regions will be slowly deflected. Therefore, after passing through several regions, predetermined deflection direction of the electromagnetic waves can be achieved. The non-uniformmetamaterial of the present invention can deflect electromagnetic waves in a convenient and flexible way, and its manufacture process is simple and suitable for mass production.