Encoded Microflakes Binary Edge Identification Multiplex Assays
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Solution Overview
Problem
Conventional multiplex assays face challenges with high fabrication costs and insufficient reaction surfaces due to limitations in encoding microcarriers for distinguishing multiple targets, particularly in high-throughput applications.
Innovation Solution
The use of microflakes with a polymer layer and binary sequences encoded by edge outlines on parallel surfaces, allowing for identification and differentiation of microflakes based on their digital codes, facilitating target-specific bonding and simplifying the decoding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional microcarriers are labeled with different fluorescent dyes to distinguish multiple targets, then the ability to identify different targets is improved, but the number of available fluorescent dyes is insufficient for high-throughput multiplex assays
Solution Approach 1:
The patent uses binary code patterns consisting of opaque and transparent segments that create distinct optical signatures when illuminated. Instead of relying on limited fluorescent dyes, the system encodes microcarrier identity through spatial patterns of light transmission, enabling thousands of distinguishable targets with just two optical states (opaque/transparent).
Solution Approach 2:
The invention transitions from using spectral dimensions (different fluorescent dyes) to spatial dimensions (patterns of opaque and transparent segments) for encoding. By arranging binary code segments in specific spatial configurations around the microcarrier equator, the system achieves high-dimensional encoding capability that far exceeds the limited number of fluorescent dye options.
2Adaptability or versatility
If microcarriers are encoded with patterns of opaque segments and transparent gaps, then the ability to identify microcarriers is improved, but the fabrication cost increases
Solution Approach 1:
The microcarrier is divided into multiple discrete binary code segments (opaque and transparent) arranged in specific patterns. This segmentation allows for standardized manufacturing modules that can be produced cost-effectively using automated techniques, while still providing unique identification codes for each microcarrier type.
Solution Approach 2:
The binary code patterns can be replicated using low-cost manufacturing techniques such as inkjet printing, photolithography, or embossing. These methods allow for high-volume production of encoded microcarriers at minimal cost, replacing expensive conventional encoding methods.
3Adaptability or versatility
If conventional encoding methods are used to distinguish microcarriers, then target identification is enabled, but the reaction surface area is reduced
Solution Approach 1:
The binary code encoding is confined to a minimal equatorial region of the microcarrier, using only thin opaque and transparent segments. This localized encoding approach preserves the majority of the microcarrier surface area for probe immobilization and target binding, maximizing the reaction surface while maintaining identification capability.
Solution Approach 2:
The encoding segments are implemented as thin opaque and transparent films or coatings applied to the microcarrier surface. These thin-film structures minimize the consumption of surface area, allowing the bulk of the microcarrier to remain available for biological reactions while still providing robust optical encoding.
Data Source
AI summary
A digitally encoded microflake includes a polymer layer, which has a top surface and a bottom surface substantially parallel to the top surface. At least one of the top surface and the bottom surface is to be coupled to target-specific probes for bonding with a target analyte. The microflake is identified by a binary sequence of bits encoded by an edge outline on a plane substantially parallel to the top surface and the bottom surface. The bits in the binary sequence are encoded at respective predefined locations surrounding the edge outline.