Encoded Microparticle Array Imaging and Decoding
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Solution Overview
Problem
Conventional nucleic acid and protein array technologies face challenges in accuracy, reliability, and throughput, particularly in high-volume testing and rapid probe customization, with limitations in spatial resolution and data quality, necessitating the development of more efficient methods for decoding and analyzing encoded microparticle arrays.
Innovation Solution
The use of encoded microparticle arrays assembled near semiconductor surfaces, allowing for direct multicolor imaging and automated decoding, combined with advanced image processing and analysis methods for secure data transmission and archiving, enables rapid and reliable analysis of molecular interactions, particularly in decentralized settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If confocal laser scanning is used to scan arrays, then data quality can be extracted, but the process is slow and requires repeated scanning for each signal color
Solution Approach 1:
The patent uses digital imaging to create a complete snapshot copy of the entire array in a single capture, eliminating the need for physical scanning. The array is optically copied onto a detector plane, allowing simultaneous acquisition of all spatial positions and multiple signal colors through filter sets, thereby resolving the contradiction between data quality and scanning speed.
Solution Approach 2:
The patent transitions from one-dimensional linear scanning to two-dimensional parallel imaging by mapping the array onto a detector plane. This dimensional change allows all array elements to be imaged simultaneously rather than sequentially, achieving both high data quality through digital capture and high productivity through parallel acquisition of multiple wavelengths.
2Ease of manufacture
If spatially encoded probe arrays are produced by in-situ photochemical synthesis, then arrays can be produced, but the technology is limited to short oligonucleotide probes and requires redesign for customization
Solution Approach 1:
The patent segments the array manufacturing process into separate functional modules: probe synthesis, array assembly, and imaging/detection. This segmentation allows different probe types (short oligonucleotides, cDNA, proteins) to be produced using their respective optimal methods and then assembled into arrays, enabling both ease of manufacture for each probe type and versatility for customization without requiring complete process redesign.
3Productivity
If spotted arrays are used for high-volume testing, then large sample volume can be processed, but accuracy and reliability are compromised
Solution Approach 1:
The patent replaces the mechanical spotting process with a digital imaging and detection system. Instead of relying on mechanical precision of spot placement and deposition, the system uses optical fields to excite fluorophores and digital detectors to capture signals from all array elements simultaneously. This substitution maintains high throughput while improving reliability through consistent optical excitation and sensitive digital detection.
4Ease of manufacture
If conventional spotting methods are used to produce arrays, then arrays can be created, but accuracy and reliability are limited for high-demand applications
Solution Approach 1:
The patent uses digital imaging to create an accurate optical copy of the array configuration and probe locations. This digital representation serves as a precise map that can be stored, analyzed, and used to identify probe identities without relying on the physical precision of the spotting process. The copying approach maintains ease of manufacture while achieving high manufacturing precision through digital measurement and analysis.
Data Source
AI summary
Systems and methods are provided the autocentering, autofocusing, acquiring, decoding, aligning, analyzing and exchanging among various parties, images, where the images are of arrays of signals associated with ligand-receptor interactions, and more particularly, ligand-receptor interactions where a multitude of receptors are associated with microparticles or microbeads. The beads are encoded to indicate the identity of the receptor attached, and therefore, an assay image and a decoding image are aligned to effect the decoding. The images or data extracted from such images can be exchanged between de-centralized assay locations and a centralized location where the data are analyzed to indicate assay results. Access to data can be restricted to authorized parties in possession of certain coding information, so as to preserve confidentiality.