Compact Optical Virus Detection Analyzer Using Light Scattering and Fluorescence
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Solution Overview
Problem
Current diagnostic methods for detecting pathogens like coronavirus are time-consuming, require trained professionals, and lack affordable, compact, and reliable at-home testing solutions, which hampers early detection and increases healthcare burdens.
Innovation Solution
A compact optical virus detection analyzer (COVDA) using light scattering and fluorescence spectroscopy to detect nanometer and micrometer-sized bio particles, particularly leveraging the presence of tryptophan as a biomarker for rapid and reliable at-home testing, with the ability to provide instantaneous results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If molecular tests like RT-PCR are used for pathogen detection, then detection accuracy is improved, but testing time increases to several days
Solution Approach 1:
The patent replaces complex molecular biology systems (RT-PCR) with optical detection systems. The analyzer uses light scattering and fluorescence spectroscopy to detect viral particles and biomolecules, substituting mechanical/chemical amplification processes with optical measurement processes that yield results in minutes rather than days.
Solution Approach 2:
The patent changes the detection parameters from molecular-level signal detection (requiring nucleic acid amplification) to optical-level signal detection (light scattering and fluorescence). This parameter change enables rapid detection while maintaining accuracy through the use of characteristic optical signatures of viral particles and tryptophan biomolecules.
2Reliability
If molecular tests are performed by trained professionals in specialized laboratories, then detection reliability is improved, but accessibility and testing frequency are reduced
Solution Approach 1:
The patent enables self-service testing by designing a compact analyzer that can be operated by non-professionals at home. The device incorporates user-friendly interfaces, automated sample processing, and instant result display, allowing individuals to perform diagnostic testing independently without requiring trained laboratory personnel.
Solution Approach 2:
The patent extracts the essential detection functionality from complex laboratory systems and consolidates it into a compact, portable analyzer. By separating the core optical detection mechanism from the surrounding laboratory infrastructure, the system can be deployed in home settings while maintaining diagnostic reliability.
3Measurement precision
If conventional diagnostic testing methods are used, then detection capability is maintained, but device size and cost prevent compact, affordable at-home deployment
Solution Approach 1:
The patent segments the diagnostic system into modular functional components: a compact optical detection unit, a sample processing chamber, a control interface, and a result display system. This segmentation allows each component to be optimized for miniaturization while maintaining overall detection capability, enabling a portable at-home device.
Solution Approach 2:
The patent designs a multi-functional analyzer that can detect various viral particles and biomolecules using the same optical detection platform. The system performs light scattering measurements for particle size detection and fluorescence spectroscopy for biomolecule identification, consolidating multiple diagnostic functions into a single compact device.
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
COVDA significantly increases testing volume and frequency, reduces healthcare burdens, and enables early detection of pathogens like coronavirus, facilitating improved patient management and disease control through rapid and reliable point-of-test results.
Implementation Method 1
uses light scattering and fluorescence to detect nanometer (nm) and micrometer (um) sized particles, such as biological particles
Implementation Method 2
molecular fluorescence spectroscopy focusing on Tryptophan, one of the key features and nanometer and micrometer size particles of the bio media
Data Source
AI summary
A Compact Optical Virus Detection Analyzer (COVDA) uses light scattering and fluorescence to detect nanometer (nm) and micrometer (um) sized particles, such as biological particles and can be used to detect viruses such as coronavirus including SAR-CoV-2 responsible for COVID-19, pollen and bacteria. It can be used for prescreening, rapid detection of suspicious people. COVDA involves experimental and theoretical methods for particle and virus detection using Tryptophan as a key biomarker. Light sources in compact units include lamps such as Xenon (Xe) lamp with narrow band filters, LEDs (such as AlN) or laser diode, Q switched and mode lock Lasers for nanosecond and picosecond pulses (such as Nd Yag/Glass, Ti sapphire with Harmonic generator) in blue from 400 nm to 500 nm to generate second harmonic generation (SHG) in KDP/BBO crystals to produce 200 nm to 250 nm emission, or green laser pointers at about 530 nm to get emitters with harmonic crystals at about 270 nm or LEDS from 230 nm to 300 nm for pumping the samples at 230 nm to 289 nm to pump tryptophan and light scatter of nanometer particles of virus. The ultra high power ns and ps lasers in mJ to J can level can be used to locate Bio virus bacteria clouds in free space to image and destroy and kill virus.