Chemiluminescent Fluorescence Detection in Microfluidic Amplification
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Solution Overview
Problem
Conventional microfluidic devices face challenges in detecting amplification reactions due to the need for optical excitation of fluorophores, which requires complex and expensive optics, making it difficult for point-of-care devices and high-throughput applications.
Innovation Solution
The method employs energy-transferring substances, such as luminescent molecules, to chemically excite fluorophores, eliminating the need for optical excitation by using chemical energy transfer to induce fluorescence detection after amplification reactions, allowing for fluorescence read-out without optical light sources or devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical excitation is used to detect fluorescence in microfluidic devices, then fluorescence detection can be achieved, but the device complexity and cost increase due to required optics
Solution Approach 1:
The patent replaces the optical excitation system (mechanical/optical components) with a chemical energy transfer system. Specifically, chemiluminescent substances transfer energy to fluorophores through chemical reactions, eliminating the need for external light sources, lenses, and other optical components while maintaining fluorescence detection capability.
Solution Approach 2:
The patent introduces chemiluminescent substances as intermediaries between the chemical reaction and the fluorophores. These substances act as energy carriers that receive energy from chemical reactions and transfer it to fluorophores, enabling fluorescence without direct optical excitation.
2Measurement precision
If optical excitation systems are implemented in microfluidic devices, then fluorescence can be detected, but the cost of the device increases
Solution Approach 1:
The patent replaces expensive optical components (light sources, lenses, filters) with inexpensive chemiluminescent substances and chemical reagents. This substitution dramatically reduces the bill of materials cost while maintaining the fluorescence detection function.
Solution Approach 2:
The patent uses consumable chemiluminescent reagents that are inexpensive and can be discarded after use, replacing expensive durable optical components. The chemiluminescent substrate and catalysts are low-cost materials that enable single-use or limited-use detection without requiring investment in expensive optical infrastructure.
3Measurement precision
If conventional optical excitation is used, then fluorescence detection is possible, but the equipment required is complex and not suitable for point-of-care applications
Solution Approach 1:
The patent replaces complex optical equipment with simple chemical reagents and a basic detection system. The chemiluminescence-based energy transfer requires no sophisticated light sources or optical alignment, making the system easy to operate in point-of-care settings with limited technical expertise.
Solution Approach 2:
The system uses the chemical energy from the amplification reaction itself to excite the fluorophores through chemiluminescent intermediaries. The reaction mixture self-excites the fluorescence without requiring external equipment, making the system autonomous and suitable for decentralized point-of-care use.
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 simplifies the detection process, reduces equipment complexity, and enhances the ability to perform amplification reactions in microfluidic devices by enabling fluorescence detection without the need for optical excitation, making it suitable for medical diagnostics and high-throughput applications.
Implementation Method 1
the fluorophores are excited by transfer of chemical energy with the aid of the energy-transferring substance
Implementation Method 2
The energy-transferring substance is preferably one or more luminescent substances. The basis of the luminescence is that corresponding luminescent substances may be optically, electrically or chemically shifted into an excited energy state
Implementation Method 3
The fluorescence is generated by optically exciting the fluorophores or fluorescent dyes with an appropriate excitation wavelength
Implementation Method 4
When a quencher is located in the spatial proximity of the fluorophore, the fluorescence is deactivated non-radiatively
Data Source
AI summary
In an amplification reaction in a microfluidic apparatus, the reaction is carried out using starting substances tagged with fluorophore and quencher. The detection of reaction products occurs according to the disclosure by a separation of fluorophore and quencher occurring in the context of the amplification reaction. For the detection reaction, at least one energy-transferring substance is added and the evaluation occurs on the basis of the fluorescence emission of the fluorophores which occurs.