Integrated Waveguide Illumination for Analytical Systems
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Solution Overview
Problem
Conventional optical systems for analytical technologies are complex, costly, and have significant space requirements, struggling to achieve high throughput and portability while maintaining signal-to-noise ratio, especially at single molecule levels.
Innovation Solution
The development of integrated analytical devices with an optically opaque cladding layer, a sequencing layer, and a waveguide assembly that receives optical illumination and introduces it into the device, utilizing nanoscale apertures and metal-insulator-metal structures for plasmonic energy excitation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional optical systems with mirrors, prisms, and beam splitting optics are used to direct and manipulate light, then the system can perform optical analysis functions, but the device complexity and space requirements increase significantly
Solution Approach 1:
The patent merges multiple optical functions (light direction, focusing, filtering, detection) into a single integrated optical detection device with a simplified optical train. The device combines the reaction chamber, optical elements, and detection system in one unit, eliminating the need for separate mirrors, prisms, and beam splitting optics while maintaining analytical performance.
Solution Approach 2:
The integrated optical detection device performs multiple optical analysis functions simultaneously using a single device architecture. The device can detect various analytes using the same basic optical train, making it a universal platform for different analytical applications without requiring separate specialized systems for each function.
2Measurement precision
If sensitivity is increased to detect single molecule levels, then the ability to monitor specific reactions improves, but the sensitivity to non-relevant signals and noise increases
Solution Approach 1:
The patent employs localized illumination and detection zones within the reaction chamber to minimize noise. By confining the excitation light to specific regions and using spatially-resolved detection, the system enhances signal specificity while reducing background noise from other areas of the sample.
Solution Approach 2:
The device uses optical intermediaries such as waveguides and optical filters to separate signal from noise. These intermediary elements selectively transmit the desired analytical signal while blocking irrelevant wavelengths and reducing background interference, thereby improving the signal-to-noise ratio at single molecule detection levels.
3Productivity
If high throughput is achieved in modern analysis systems, then the productivity improves, but the portability and reduced footprint become more difficult to maintain
Solution Approach 1:
The integrated optical detection device combines multiple analytical functions and high-throughput capabilities in a single compact unit. By merging the optical train, reaction chambers, and detection systems into one integrated platform, the device achieves high throughput without requiring the extensive space of conventional separate systems.
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 enhances the sensitivity and specificity of analytical reactions, reduces noise contributions, and improves the performance and scalability of analytical systems, achieving high throughput and portability.
Implementation Method 1
The waveguide assembly may include a nanoscale aperture disposed in the substrate and extending through the cladding. The aperture defines a reaction cell for receiving a set of reactants.
Implementation Method 2
utilizing nanoscale apertures and metal-insulator-metal structures for plasmonic energy excitation
Data Source
AI summary
An analytical device including an optically opaque cladding, a sequencing layer including a substrate disposed below the cladding, and a waveguide assembly for receiving optical illumination and introducing illumination into the device. The illumination may be received from a top, a side edge, and a bottom of the device. The waveguide assembly may include a nanoscale aperture disposed in the substrate and extending through the cladding. The aperture defines a reaction cell for receiving a set of reactants. In various aspects, the device includes a sensor element and the illumination pathway is through the sensor element. Waveguides and illumination devices, such as plasmonic illumination devices, are also disclosed. Methods for forming and operating the devices are also disclosed.