Radiofrequency Wave Absorbing Security Compositions
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Solution Overview
Problem
Current security documents face limitations in authentication due to the vulnerability of luminescent substances and magnetic markers, which are easily detectable and can be deactivated, and existing systems for detecting security elements in the microwave range are not robust enough, leading to potential false positives.
Innovation Solution
A security composition comprising a combination of inorganic oxide materials with different sizes and morphologies, incorporating transition metals or lanthanide elements, which absorbs radiofrequency waves, providing a robust and non-deactivatable security system with unique absorption properties for authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If luminescent substances or dyes are used for authentication, then the security document can be detected by special light, but the optical transitions are limited and the system is vulnerable to forgery
Solution Approach 1:
The patent changes the detection parameter from optical frequency to radiofrequency, and changes the material property from luminescent emission to electromagnetic wave absorption. This allows using the vast variety of radiofrequency absorption properties of different materials instead of the limited optical transitions, resolving the contradiction between reliability and versatility.
Solution Approach 2:
The patent substitutes the optical detection system with a radiofrequency electromagnetic detection system. By using radiofrequency waves instead of visible light, the system gains access to much broader material properties for authentication, eliminating the limitation of limited optical transitions while maintaining authentication reliability.
2Reliability
If magnetic markers are used for security, then the markers can be detected, but they can be deactivated by applying a suitable magnetic field
Solution Approach 1:
The patent replaces magnetic markers with radiofrequency-absorbing materials. Unlike magnetic markers that can be deactivated by magnetic fields, radiofrequency absorption properties are inherent to the material composition and cannot be deactivated, providing stable and reliable security markers that maintain their authentication capability.
Solution Approach 2:
The patent uses composite materials with specific radiofrequency absorption properties. These composite materials provide stable, non-deactivatable security features that cannot be turned off or deactivated like magnetic markers, ensuring long-term reliability of the security system.
3Ease of operation
If anti-theft magnetic markers are used, then remote detection is possible, but the markers are fairly large and detectable to the naked eye
Solution Approach 1:
The patent changes the detection frequency from low-frequency magnetic fields requiring large markers to radiofrequency waves that can interact with much smaller particles. This allows the security markers to be miniimized to particle or nanoparticle scale while maintaining remote detection capability through radiofrequency absorption measurement.
4Measurement precision
If microwave detection systems are used for security elements, then detection can be performed, but the systems are not robust enough and give false positives
Solution Approach 1:
The patent focuses on measuring the specific radiofrequency absorption properties of particular materials at specific frequencies. By targeting the unique absorption characteristics of authorized security materials rather than general microwave reflection, the system achieves both high measurement precision and detection robustness, eliminating false positives.
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 solution enables reliable and accurate detection of security markers within security documents using radiofrequency waves, offering a virtually unlimited number of unique codes and preventing forgery by ensuring the system remains active and undetectable to the naked eye.
Implementation Method 1
comprising a combination of inorganic oxide materials with different sizes and morphologies, wherein the inorganic oxide materials have at least one transition metal or one lanthanide element, and present radiofrequency wave absorption properties
Data Source
AI summary
The present invention relates to the use of non-deactivatable security compositions comprising the combination of at least two types of particles of oxide materials, where said particles have a different size and/or morphology, and where the inorganic oxide materials have at least one transition metal or one lanthanide element, and radiofrequency wave absorption properties. The invention also relates to security articles, documents or elements incorporating these compositions, as well as to a method and to a system for detection thereof.