Compact Disc Reader Biosensor Detection Automation
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Solution Overview
Problem
Current biosensors face challenges in automating the detection of biomolecular interactions, particularly when handling multiple samples, due to difficulties in confocal microscope reading leading to long measurement times and limitations in sensitivity and specificity, especially in label-free techniques.
Innovation Solution
Modifying standard compact disc readers to create a system for integrated microscopy that allows for rapid and automated analysis by precisely controlling the position of the reading unit and focusing the laser beam within biosensors, enabling efficient fluorescence measurement across multiple biosensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If confocal microscope reading is used for biosensor detection, then measurement specificity is improved, but measurement time increases and automation becomes difficult
Solution Approach 1:
The patent replaces the mechanical confocal microscope reading system with an optical detection system based on modified compact disc readers. This substitution maintains detection capability while enabling rapid automated measurement of multiple biosensors simultaneously, reducing measurement time from minutes to seconds per sample.
Solution Approach 2:
The patent adapts compact disc readers, which are mass-produced consumer devices, for specialized biosensor detection applications. By modifying these readers to detect fluorescence signals from biosensors, the system achieves both rapid measurement and automated handling capabilities while maintaining optical detection specificity.
2Productivity
If label-free techniques are used for biosensor detection, then measurement speed is improved, but sensitivity and molecular specificity decrease
Solution Approach 1:
The patent applies fluorescence labeling specifically to the biomolecules of interest, creating localized optical contrast at the molecular level. This allows the detection system to achieve high molecular specificity by detecting the fluorescent signal only from labeled molecules, while the overall measurement process remains rapid and automated.
Solution Approach 2:
The patent utilizes fluorescence emission at different wavelengths to achieve molecular specificity. By detecting the characteristic emission colors of different fluorescent labels, the system can distinguish between different biomolecular interactions, providing both speed and specificity simultaneously.
3Productivity
If multiple biosensors are analyzed simultaneously, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent employs microarray technology that divides multiple biosensor samples into separate spatial locations on a substrate. Each biosensor is positioned in a distinct location, allowing parallel detection without interference. The modified compact disc reader scans across these segmented positions, achieving high throughput while maintaining manageable system complexity through spatial organization.
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 enables rapid and automated sensing of multiple biomolecular interactions, improving sensitivity and specificity while reducing measurement time, making it suitable for biomedical and biological applications.
Implementation Method 1
The specimen is illuminated with light of a specific wavelength, which brings it to an excited state, leading to an emission of light at a longer wavelength.
Implementation Method 2
The emission is measured by a detector, which allows quantifying the number of fluophores in the measurement volume.
Data Source
Figure 1a~1b
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AI summary
A method and system for the rapid detection of biomolecular interactions, the system comprising a sensing platform which comprises a primary support structure including recesses designed to be located in front of a detection unit, said recesses containing one or several arrays of biosensors, said system furthermore comprising a reader unit for optical excitation and detection.