Aptamer Molecular Photonic Beacons for Smartphone Pathogen Detection
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Solution Overview
Problem
Current aptamer-based pathogen detection methods require costly and complex equipment, limiting their accessibility and usability for widespread application, as they rely on specialized devices for fluorescence detection, which are not portable and require specialized training.
Innovation Solution
Aptamer Molecular Photonic Beacons (AMPBs) are designed to work with smartphone technology, utilizing a fluorophore and quencher pair that responds to smartphone LED light, allowing for fluorescence detection using a mobile device's camera, eliminating the need for specialized equipment and enabling portable pathogen testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If fluorescence spectroscopy or fluorometry equipment is used to detect aptamer molecular beacon fluorescence, then detection precision is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent uses a smartphone camera to capture fluorescence images instead of requiring specialized fluorescence spectroscopy equipment. The camera sensor acts as a simplified detector that copies the fluorescence signal detection function, making the system accessible without complex specialized instruments
Solution Approach 2:
The patent replaces complex optical detection systems with a smartphone-based system that uses standard camera sensors and LED flash. This substitution eliminates the need for sophisticated fluorescence spectroscopy equipment while maintaining detection capability through image capture and analysis
2Measurement precision
If specialized fluorescence detection equipment is used, then measurement precision is improved, but ease of operation deteriorates due to required specialized training
Solution Approach 1:
The smartphone application automatically processes fluorescence images, performs quantitative analysis, and generates results without requiring user intervention or specialized knowledge. The system self-calibrates and self-analyzes, making operation as simple as capturing an image with a smartphone camera
Solution Approach 2:
The patent transfers the complex analysis functions from specialized equipment to automated software algorithms running on a smartphone. This copying of analytical capabilities to a user-friendly platform eliminates the need for specialized training while maintaining measurement precision
3Ease of operation
If portable testing is implemented using smartphone technology, then ease of operation and accessibility are improved, but measurement precision may deteriorate
Solution Approach 1:
The patent optimizes fluorescence parameters for smartphone detection by selecting fluorophores with emission wavelengths matched to camera sensor sensitivity peaks. The aptamer molecular beacon structure and fluorophore selection are specifically tuned to maximize signal intensity within the constraints of smartphone hardware, maintaining precision despite portability
Solution Approach 2:
The system uses multiple fluorescence image captures and statistical analysis to compensate for the lower sensitivity of smartphone cameras compared to specialized equipment. By taking multiple measurements and analyzing fluorescence intensity distributions, the system achieves sufficient precision for diagnostic purposes
4Ease of manufacture
If aptamer molecular photonic beacons are designed for smartphone LED excitation, then ease of manufacture and accessibility are improved, but the scope of applicable fluorophores is limited
Solution Approach 1:
The patent designs aptamer molecular beacons with fluorophores selected based on their excitation and emission spectra compatibility with smartphone LED flash and camera sensors. This parameter optimization enables standard manufacturing processes while maintaining compatibility with off-the-shelf smartphone hardware
Solution Approach 2:
The patent creates a universal detection platform where a single smartphone-based system can detect multiple pathogens by changing only the aptamer sequence, while keeping the fluorophore and detection methodology the same. This multi-functional design simplifies manufacturing and enables widespread adoption across different diagnostic applications
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 solution enables affordable, user-friendly, and portable pathogen detection using a smartphone, allowing for widespread application and rapid testing without the need for complex equipment or specialized training, improving accessibility and efficiency.
Implementation Method 1
The fluorophore then, on receiving incident light will fluoresce at a different wavelength than the incident light
Implementation Method 2
prior to binding to the specific virus, it has a shape where the quencher is in proximity to the fluorophore
Data Source
AI summary
This disclosure pertains to a testing method for a target pathogen. The method uses biosensors with particular fluorescence characteristics, such that when the biosensor binds to a target pathogen, a fluorophore may emit light if excited. The biosensor may be an aptamer-based biosensor with a fluorophore reporter and a quencher. The excitation of the fluorophore and the detection of fluorescence may be made through the use of a flashlight source and a camera from a mobile device, such as a smartphone.