Nickel-CVD Shielding Wallpaper for Retrofit Electromagnetic Protection

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Solution Overview

Problem

Conventional electromagnetic shielding methods are costly, limited in size and functionality, and unsuitable for retrofitting existing facilities, relying on expensive and heavy metals that require precise welding, making them impractical for widespread application.

Innovation Solution

Development of multifunctional nickel-coated shielding materials, including wallpaper, window coverings, paints, and concrete, which provide lightweight and cost-effective electromagnetic protection by using nickel-CVD coated woven and nonwoven substrates that can be easily integrated into existing structures, offering isotropic conductivity and broadband shielding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional electromagnetic shielding methods using heavy metals are employed, then shielding effectiveness is improved, but weight and cost increase significantly

Engineering Contradiction:

Improveshielding effectivenessVSAvoidweight

Core Design Contradiction:

ReliabilityVSWeight of stationary object

Solution Approach 1:

The patent changes the material parameters from heavy metals to lightweight nickel-coated fabrics and flexible shielding materials. This parameter change maintains electromagnetic shielding effectiveness while dramatically reducing the weight of the shielding structure, enabling applications where weight is critical such as portable facilities and retrofit installations.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs composite materials consisting of nickel coating on flexible fabric substrates. This composite structure combines the electromagnetic shielding properties of nickel with the lightweight and flexible characteristics of the fabric base, achieving both effective shielding and reduced weight compared to solid metal constructions.

Inventive Principle:

Principle #40Composite materials

2Reliability

If conventional electromagnetic shielding methods using heavy metals are employed, then shielding effectiveness is improved, but manufacturing complexity and cost increase

Engineering Contradiction:

Improveshielding effectivenessVSAvoidmanufacturing complexity

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent replaces the mechanical welding system required for metal shielding with adhesive bonding or interlocking mechanisms for flexible shielding materials. This substitution eliminates the need for precision welding equipment and skilled welders, dramatically simplifying the manufacturing and installation processes while maintaining shielding effectiveness.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent uses flexible shielding materials that can be easily cut, shaped, and installed without complex manufacturing processes. These thin film materials can be applied to irregular surfaces and integrated into existing structures, reducing both manufacturing complexity and installation time compared to rigid metal shielding systems.

Inventive Principle:

Principle #30Flexible shells and thin films

3Reliability

If conventional electromagnetic shielding methods are employed, then shielding effectiveness is improved, but adaptability to retrofit applications decreases

Engineering Contradiction:

Improveshielding effectivenessVSAvoidretrofit capability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent employs dynamic and adaptable shielding solutions that can be easily installed and removed from existing structures. The flexible materials can conform to various wall surfaces, windows, and door configurations, allowing the same shielding system to be adapted to different retrofit scenarios without requiring custom fabrication for each application.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent divides the shielding system into modular components such as wall panels, window coverings, and door shields that can be independently installed and configured. This segmentation allows flexible adaptation to retrofit applications where only specific areas need shielding, and enables easy modification or removal of individual components without affecting the entire shielding system.

Inventive Principle:

Principle #1Segmentation

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

These materials enable unattainable levels of electromagnetic protection, suitable for various applications, including SCIFs and office environments, with shielding effectiveness demonstrated across a broad frequency range, offering significant weight and cost savings while maintaining structural integrity.

Implementation Method 1

nickel-CVD coated woven and nonwoven substrates that can be easily integrated into existing structures, offering isotropic conductivity and broadband shielding

Methodology Applied

Scientific EffectElectromagnetic shielding: Faraday Cage

Implementation Method 2

CVD coated woven and nonwoven broad goods

Methodology Applied

Scientific EffectChemical Vapour Deposition: Chemical Vapour Deposition

Data Source

PatentUS11445644B1Electromagnetically shielded wallpaper

Publication Date: 2022.09.13 PRINCIPAL CG HOLDINGS LLC

AI summary

The electromagnetic shielding of an enclosable building structure is provided by applying a shielding wallcovering to at least a portion of building structure. The shielding wall covering is wallpaper comprising a metal-coated substrate core and resin. To connect the shielded wallpaper to the building structure a layer of the resin or an adhesive layer may be used.