Fluorescent Nanoparticle Authentication via Resonance Raman

Solution Overview

Problem

Counterfeit products pose a significant global crisis due to sophisticated counterfeiting methods, making existing authentication technologies ineffective, particularly in verifying high-value items like anti-cancer drugs, and conventional solutions require laboratory analysis or proprietary scanning equipment, limiting accessibility.

Innovation Solution

A method and system utilizing fluorescent nanoparticles embedded in a resin applied to products, which respond to specific light sources, allowing for authentication through peak fluorescence wavelength detection and colorimetric analysis, enabling authentication with a smartphone or similar device without the need for specialized equipment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional security features (ultraviolet responsive inks, holography) are used, then product authentication capability is provided, but counterfeiters can develop ways to overcome these mechanisms

Engineering Contradiction:

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent uses fluorescent nanoparticles with specific peak fluorescence wavelengths that can be precisely controlled and tuned. Each nanoparticle formulation has a unique spectral signature that is extremely difficult to replicate, creating a parameter-based authentication system that resists counterfeiting. The resonance Raman effect further enhances this by providing unique vibrational fingerprints for different molecules.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention combines multiple authentication mechanisms into a single composite security feature: fluorescent nanoparticles embedded in resin, illuminated by light sources with specific peak emission wavelengths, and detected through resonance Raman spectroscopy. This multi-layered composite approach creates authentication that is highly sophisticated yet appears as a simple mark to the naked eye.

Inventive Principle:

Principle #40Composite materials

2Measurement precision

If laboratory analysis or proprietary scanning equipment is used for detection, then measurement precision is improved, but device complexity and accessibility worsen

Engineering Contradiction:

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical laboratory analysis equipment with an optical system based on resonance Raman spectroscopy. By using light sources with peak emission wavelengths that resonate with specific molecular vibrations, the system achieves high measurement precision using only optical components and detectors, eliminating the need for complex mechanical laboratory instruments.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The authentication system is designed to be detectable by multiple types of devices including smartphones, portable scanners, and laboratory equipment. The fluorescent nanoparticles and resonance Raman effect work across different detection platforms, allowing the same security feature to be verified by consumers with mobile devices or by authorities with more sophisticated equipment.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If sophisticated authentication mechanisms are implemented, then reliability is improved, but ease of manufacture worsens

Engineering Contradiction:

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The fluorescent nanoparticles are synthesized and characterized beforehand to ensure they have the desired peak fluorescence wavelengths and spectral properties. This preliminary preparation allows for quality control and standardization, making the authentication system reliable while simplifying the actual application process where the pre-characterized nanoparticles are simply incorporated into the resin and applied to the product.

Inventive Principle:

Principle #10Preliminary action

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

Provides a secure and accessible means to verify product authenticity, difficult to duplicate, using a unique fluorescence spectrum for each product, allowing for customer engagement and secure communication of product information.

Implementation Method 1

fluorescent nanoparticles having a peak fluorescence wavelength associated with a peak emission wavelength of the light source

Methodology Applied

Scientific EffectFluorescence: Fluorescence

Implementation Method 2

a detector for detecting a fluorescent response to the light source by the fluorescent nanoparticles

Methodology Applied

Scientific EffectFluorescence detection: Fluorescence

Data Source

PatentUS11371939B2System and method of product authentication

Publication Date: 2022.06.28

AI summary

A method and system are provided. The method involves generating a plurality of nanoparticles, isolating fluorescent nanoparticles, embedding the fluorescent nanoparticles in a resin and applying the resin on a product. The system is for product authentication and includes a light source, fluorescence nanoparticles, a detector and a resin for applying on a product. Furthermore, a non-transitory computer readable medium encoded with codes is provided to direct the system to carry out the method.