Composite Faraday Cage Structure for Corrosion-Resistant Shielding
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Solution Overview
Problem
Conventional Faraday cages made of metals are not suitable for outdoor use due to their low resistance against corrosion, particularly in wet environments.
Innovation Solution
A structure comprising a first portion made of an electric conductor, such as gold, silver, or copper, and a second portion made of a material with lower electrical conductivity and higher corrosion resistance, such as stainless steel or titanium, where the second portion covers at least part of the first portion's surface, optionally with a meshed structure or auxiliary mesh materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal is used as an electric conductor for Faraday cage, then electromagnetic wave blocking performance is improved, but corrosion resistance deteriorates
Solution Approach 1:
The patent applies composite materials by combining a metal layer (first material) with a corrosion-resistant coating layer (second material). The metal layer provides electromagnetic wave blocking functionality while the coating layer protects against corrosion. This composite structure resolves the contradiction by integrating two materials with complementary properties into a single functional unit.
Solution Approach 2:
The patent applies local quality by creating a multi-layer structure where different regions of the Faraday cage have different material compositions. The inner metal layer maintains electromagnetic shielding properties while the outer coating layer provides corrosion protection. This allows each layer to perform its specific function optimally without compromising the other.
2Reliability
If a metal is used as an electric conductor for Faraday cage, then electrical conductivity is improved, but durability in outdoor environment deteriorates
Solution Approach 1:
The patent uses composite materials consisting of a metal base layer for electrical conductivity and a corrosion-resistant coating layer for durability. The metal layer (such as copper, aluminum, or steel) provides the necessary electrical conductivity for Faraday cage functionality, while the coating layer (such as galvanization, plating, or polymer coating) protects against environmental degradation, thereby extending the service life of the structure in outdoor conditions.
Solution Approach 2:
The patent applies beforehand cushioning by pre-applying a protective coating layer to the metal surface before the Faraday cage is deployed outdoors. This coating acts as a preventive measure against corrosion, rust, and environmental damage, ensuring that the metal's electrical conductivity is maintained over time without degradation from exposure to moisture, oxygen, or other corrosive elements.
3Reliability
If metal surface is exposed to electromagnetic waves, then electromagnetic wave blocking is improved, but corrosion from rain and environment worsens
Solution Approach 1:
The patent applies composite materials by creating a multi-layer structure where the inner metal layer provides electromagnetic wave blocking functionality while the outer corrosion-resistant coating layer protects against environmental factors such as rain and moisture. This composite approach allows the metal surface to remain exposed for optimal electromagnetic shielding while the coating prevents corrosion.
Solution Approach 2:
The patent applies local quality by differentiating the material properties at different surfaces of the Faraday cage structure. The inner surface facing electromagnetic waves maintains high electrical conductivity for effective shielding, while the outer surface exposed to the environment is covered with a corrosion-resistant material. This localized differentiation of material properties optimizes both electromagnetic performance and environmental durability.
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 proposed structure enhances the resistance of Faraday cages against outdoor environments, preventing corrosion and ensuring effective electromagnetic wave blocking, making them more suitable for outdoor use.
Implementation Method 1
a first portion (110) made of a first material (115) consisting of an electric conductor, and a second portion (120) made of a second material (125) having an electrical conductivity smaller than the same of the first material (115) and a corrosion-resistance higher than the same of the first material (115), the second portion (120) covering therewith at least a part of a surface of the first portion (110)
Data Source
AI summary
A structure blocking electromagnetic waves includes a first portion comprised of a first material consisting of an electric conductor, and a second portion comprised of a second material having an electrical conductivity smaller than the same of the first material and a corrosion-resistance higher than the same of the first material, the second portion covering therewith at least a part of a surface of the first portion.