Nanotube Solution Purification for Low-Defect Uniform Fabrics
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Solution Overview
Problem
Existing nanotube solutions used in electronic devices often contain impurities and defects, such as amorphous carbon and metal, which negatively impact the electrical properties of nanotube films and fabrics, making them unsuitable for semiconductor fabrication.
Innovation Solution
A method involving the purification of nanotube solutions through degassing, continuous flow centrifugation, and depth filtering to remove impurities and defects, resulting in low-defect, uniform nanotube fabrics with enhanced electrical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If raw nanotubes are used directly in nanotube fabrics, then the manufacturing process is simple, but the fabric contains impurities and defects that negatively impact electrical properties
Solution Approach 1:
The patent applies preliminary action by performing purification, degassing, centrifugation, and filtration of nanotube solutions before fabric formation. These预处理 steps remove impurities and defects from raw nanotubes, ensuring high-quality electrical properties in the final fabric while maintaining a streamlined manufacturing process.
2Manufacturing precision
If purification processes are applied to nanotube solutions, then the quality and uniformity of nanotube fabrics improve, but the manufacturing complexity increases
Solution Approach 1:
The patent merges multiple purification functions into an integrated processing sequence: filtration removes particulate impurities, centrifugation separates density-based contaminants, and degassing eliminates dissolved gases. These combined steps achieve high fabric uniformity while managing complexity through systematic integration of purification operations.
3Reliability
If multiple purification steps are performed, then defect levels in nanotube fabrics are reduced, but the production time increases
Solution Approach 1:
The patent implements continuous useful action by performing purification, degassing, centrifugation, and filtration in a continuous sequence without interruption. This continuous processing approach minimizes idle time between steps while ensuring thorough defect removal, thereby reducing production time loss despite multiple purification operations.
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 method effectively reduces impurities and defects in nanotube solutions, producing highly uniform and defect-free nanotube fabrics suitable for use in electronic devices, improving their electrical performance and reliability.
Implementation Method 1
The mixture is purified to obtain a purified nanotube solution. The purified nanotube solution is degassed
Implementation Method 2
a continuous flow centrifugation process is performed on the purified nanotube solution
Implementation Method 3
The purified nanotube solution is filtered to obtain a low defect purified nanotube solution
Data Source
AI summary
The present disclosure provides methods for removing defects nanotube application solutions and providing low defect, highly uniform nanotube fabrics. In one aspect, a degassing process is performed on a suspension of nanotubes to remove air bubbles present in the solution. In another aspect, a continuous flow centrifugation (CFC) process is used to remove small scale defects from the solution. In another aspect, a depth filter is used to remove large scale defects from the solution. According to the present disclosure, these three methods can be used alone or combined to realize a low defect nanotube application solutions and fabrics.