Oligomer Array Production via Stochastic Particle Deposition
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Solution Overview
Problem
Current methods for producing high-density oligomer arrays, such as peptide arrays, are limited by the need for precise positioning and multiple coupling cycles, leading to side reactions and low quality, with existing technologies only achieving spot densities of up to 40,000 spots/cm², and require complex and costly devices.
Innovation Solution
A method involving stochastic introduction of particles with molecules into wells on a substrate, where the molecules are released and bound to form oligomers, creating a 3D deposition mask that simplifies the production of ultra-high-density arrays without precise positioning, enabling spot densities of up to 1,000,000 spots/cm² or more using a simple and inexpensive process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If lithographic processes are used to achieve high spot density, then spot density can reach up to 10^6 spots/cm², but the process requires precise positioning and multiple coupling cycles leading to side reactions and low quality
Solution Approach 1:
The synthesis process is segmented into discrete well-based reactions rather than continuous lithographic patterning. Each well functions as an independent reaction chamber, eliminating the need for precise positioning between coupling cycles and preventing cross-contamination that causes side reactions.
Solution Approach 2:
Particles serve as intermediaries that deliver monomers to wells in a controlled manner. These particles enable high spot density by stochastically distributing monomer sources across the array, eliminating the need for precise lithographic positioning while maintaining reaction quality.
2Quantity of substance
If lithographic processes are used to achieve high spot density, then spot density can reach up to 10^6 spots/cm², but complex and costly devices are required
Solution Approach 1:
The complex mechanical lithographic positioning system is replaced with a stochastic particle delivery system. Instead of precisely moving reagents to fixed positions, particles randomly distribute monomers across wells, dramatically simplifying the required equipment while achieving comparable or superior spot density.
Solution Approach 2:
The system uses self-organizing stochastic processes rather than externally controlled precision mechanisms. Particles naturally distribute themselves across the array through random motion and deposition, eliminating the need for complex positioning devices and reducing overall system complexity.
3Stability of the object's composition
If multiple coupling cycles are performed for oligomer synthesis, then complete oligomers can be formed, but side reactions increase and synthesis quality decreases
Solution Approach 1:
The synthesis is segmented into independent well-based reactions where each well contains a complete set of monomers. This allows multiple coupling cycles to occur in parallel isolation, preventing side reactions between different oligomer chains while ensuring complete oligomer formation in each well.
Solution Approach 2:
Each well provides a localized reaction environment with controlled chemistry specific to that position. This local quality control ensures that coupling reactions proceed cleanly without interference from adjacent reactions, eliminating side reactions even after multiple coupling cycles.
Data Source
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AI summary
The present invention relates to a method of producing an oligomer array. The invention comprises the steps of: providing a substrate with a multitude of depressions; introducing a first particle with a first molecule into a depression; releasing the first molecule from the first particle; binding the first molecule to a second molecule to form an oligomer, with immobilization of the second molecule in the depression; optionally repeating the steps, wherein at least one of the first particles and/or the first molecules has a detectable marker.