Reduced-Scale Analytical Arrays With Optical Cross-Talk Isolation
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Solution Overview
Problem
Existing analytical systems face challenges in increasing multiplex capabilities while maintaining sensitivity and reducing complexity, particularly in optical analyses, which often require complex optical systems and lead to inter-reaction cross-talk and decreased signal-to-noise ratios.
Innovation Solution
The integration of nanoscale emission volumes with optimized optical coupling elements, including upper and lower light-directing elements, to enhance optical signal transmission and minimize cross-talk and noise in analytical devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of simultaneous analyses is increased by making systems bigger and of higher power, then throughput increases, but inter-reaction cross-talk increases and signal-to-noise ratio decreases
Solution Approach 1:
The system divides the analysis into multiple independent reaction chambers arranged in an array, where each chamber is optically isolated from others. This segmentation allows simultaneous analyses in multiple chambers without cross-talk, as each chamber functions as an independent unit with its own optical path to the detector.
Solution Approach 2:
The patent transitions from increasing multiplex by scaling up in a single dimension (higher power, bigger systems) to increasing multiplex by adding spatial dimensions (arrays of multiple reaction chambers). This dimensional approach allows parallel processing of multiple samples simultaneously, increasing throughput without the harmful effects of scaled-up single-system approaches.
2Productivity
If the number of simultaneous analyses is increased by making systems bigger and of higher power, then throughput increases, but signal-to-noise ratio decreases
Solution Approach 1:
By segmenting the system into multiple independent reaction chambers, each chamber maintains its own optimized optical path and detection capabilities. This ensures that signal-to-noise ratio is preserved in each individual chamber while the overall system throughput increases through parallel processing of multiple chambers.
Solution Approach 2:
The system uses multiple copies of the same reaction chamber design, each optimized for high signal-to-noise ratio detection. By replicating the optimized single-chamber design across an array, the system maintains the measurement precision of individual chambers while achieving high throughput through simultaneous operation of multiple copies.
3Productivity
If multiplex is increased in optical analyses, then throughput increases, but optical system complexity increases
Solution Approach 1:
The detector is designed as a universal component that can detect optical signals from multiple reaction chambers simultaneously. This multi-functional detector eliminates the need for separate detection systems for each chamber, reducing overall optical system complexity while maintaining high multiplex capabilities.
Solution Approach 2:
Instead of increasing multiplex by adding complex optical separation components in the traditional optical path, the system increases multiplex by adding spatial dimensions (multiple reaction chambers arranged in an array). Each chamber has a direct optical path to the detector, avoiding the need for complex beam splitting, filtering, or sequential detection mechanisms.
4Measurement precision
If systems are made more sensitive to detect variations, then detection capability improves, but tolerance for variations among different analyses decreases
Solution Approach 1:
By providing each reaction chamber as an independent, isolated unit, the system can maintain high detection sensitivity for variations within each chamber while being tolerant of variations between chambers. Each chamber's results are independently evaluated, allowing the system to detect subtle variations in sensitive analyses without requiring all chambers to produce identical results.
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 allows for increased multiplexing capabilities with improved signal-to-noise ratios and reduced system complexity, enabling efficient detection of multiple reactions without the need for complex optical separation components.
Implementation Method 1
a nanoscale emission volume; an excitation source optically coupled to the nanoscale emission volume; wherein an optical signal is emitted from the nanoscale emission volume
Implementation Method 2
an upper light-directing element disposed between the nanoscale emission volume and the detector layer; and a lower light-directing element disposed between the upper light-directing element and the detector layer; wherein the upper light-directing element directs the optical signal from the nanoscale emission volume through the lower light-directing element to a sensing region in the detector layer
Data Source
AI summary
Arrays of integrated analytical devices are provided. The arrays are useful in the analysis of highly multiplexed optical reactions in large numbers at high densities, including biochemical reactions, such as nucleic acid sequencing reactions. In particular, the arrays provide increased efficiency of optical collection and decreased background signal as the lateral dimensions of the unit cell of devices within the array are decreased, for example as they are decreased to 2 μm, or even less.