Transparent Glass Microwave Absorber With Dual Metal Patterns
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Solution Overview
Problem
Existing electromagnetic radiation absorbers face issues such as degradation due to temperature and humidity, mechanical erosion, and limited conductivity, which affect their performance over time and restrict their applications.
Innovation Solution
The use of a single layer substrate with patterns formed using highly conductive materials like copper and titanium on glass substrates, which allows for minimized line widths, maximized optical transparency, and enhanced durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electromagnetic radiation absorbers are used, then electromagnetic radiation absorption is achieved, but degradation occurs due to temperature and humidity exposure and mechanical erosion
Solution Approach 1:
The patent uses glass substrates with metal patterns (copper, titanium, or their alloys) to create a composite structure that combines the durability and environmental stability of glass with the high conductivity of metals. This composite approach resolves the contradiction by providing both long service life and reliable electromagnetic radiation absorption performance under various environmental conditions.
2Reliability
If conductive transparent electrodes with wider line widths are used, then conductivity is improved, but optical transparency is reduced
Solution Approach 1:
The patent optimizes the line width parameter of the metal patterns to be no greater than 10 micrometers, and in some embodiments no greater than 5 micrometers. This parameter change allows the structure to maintain high electrical conductivity for electromagnetic radiation absorption while minimizing the visual impact and preserving optical transparency of at least 80%.
3Reliability
If higher absorption rates are achieved, then electromagnetic radiation absorption performance is improved, but optical transparency is compromised
Solution Approach 1:
The patent transitions from considering only the two-dimensional area coverage of conductive materials to incorporating the third dimension of line width thickness and pattern geometry. By controlling the line width to no greater than 10 micrometers and designing specific patterns, the invention achieves high absorption rates through enhanced electromagnetic interaction in the microwave frequency range while maintaining optical transparency in the visible spectrum.
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
This approach results in electromagnetic radiation absorbers that are more durable, highly tunable for frequency ranges, and capable of achieving high absorption rates (at least 85%) while maintaining optical transparency (at least 80%).
Implementation Method 1
devices that absorb electromagnetic radiation
Implementation Method 2
highly conductive materials like copper and titanium
Data Source
AI summary
One or more devices for absorbing electromagnetic radiation are disclosed. The one or more devices include a substrate comprising a glass material. The substrate also includes a first pattern of a metal layer formed on a first surface of the substrate and a second pattern of a metal layer formed on a second surface of the substrate. The first pattern and the second pattern are different and features of the first pattern and the second pattern can be tunable to maximize optical transparency of the one or more devices and to maximize absorption of electromagnetic radiation having a target range of frequencies, such as one or more ranges of frequencies within the microwave portion of the electromagnetic spectrum.