Fluorocarbon Array Plates for Reducing Sample Adsorption
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Solution Overview
Problem
PTFE matrix-coated slides used in biological and chemical reactions suffer from lower hydrophobicity, leading to contamination of samples due to adsorption of biological and chemical materials, resulting in inaccurate assay results.
Innovation Solution
Development of array plates and slides with a sheet layer having a high percentage of fluorocarbon content, where the sheet layer is coupled with a second structure to create a reservoir system with exposed fluorocarbon surfaces and embedded surfaces, reducing material adsorption and contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PTFE matrix-coated slides are used to hold liquid droplets, then the slides can maintain structural integrity and hold droplets, but the hydrophobicity is reduced leading to contamination of samples
Solution Approach 1:
The patent extracts the resin component from the PTFE matrix coating, using only pure PTFE powder deposited on the glass slide. This removal of the resin (which had lower hydrophobicity) eliminates the cause of sample contamination while maintaining the structural integrity needed to hold liquid droplets.
Solution Approach 2:
The patent creates a composite structure combining glass slide substrate with pure PTFE powder coating. This composite material approach allows the glass slide to provide structural integrity while the pure PTFE coating provides high hydrophobicity, resolving the contradiction between structural needs and contamination resistance.
2Stability of the object's composition
If resin is added to PTFE matrix to hold PTFE powder together, then the matrix maintains structural stability, but the hydrophobicity decreases
Solution Approach 1:
The patent removes the resin component entirely, relying solely on PTFE powder deposited on the glass slide. This extraction of the problematic resin material eliminates adsorption of biological materials while the glass slide substrate and PTFE powder combination maintains sufficient structural stability.
Solution Approach 2:
The patent changes the material composition parameter from a resin-PTFE composite to pure PTFE, fundamentally altering the surface properties to achieve high hydrophobicity. This parameter change resolves the contradiction by eliminating the resin's harmful adsorption properties while maintaining adequate structural stability through the glass-PTFE interface.
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
The high hydrophobicity of the fluorocarbon surfaces minimizes sample contamination and improves the accuracy of biological and chemical assays by reducing adsorption of materials, enhancing the reliability of assay results.
Implementation Method 1
The PTFE matrix has hydrophobic characteristics... Such plates and slides with hydrophobic surfaces with higher hydrophobicity... reduce or eliminate adsorption of biological and/or chemical materials onto hydrophobic surfaces
Data Source
AI summary
A device includes a first structure with a sheet layer with a plurality of discrete through-holes and a second structure coupled to the first structure. At least a portion of a first surface of the sheet layer of the first structure is exposed from the second structure. A top portion of the sheet layer, including the exposed portion of the first surface of the sheet layer, includes fluorocarbon. The second structure includes a material of a higher surface tension than the top of the sheet layer. A second surface of the sheet layer, opposite to the first surface of the sheet layer, is embedded in the second structure. The second structure extends at least partially into the plurality of discrete through-holes of the first structure.