SWCNT Separation Apparatus with Partition Wall
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for separating metallic and semiconducting single-walled carbon nanotubes are prone to convection phenomena in the separation tank, leading to instability and purity issues when used in electronic devices.
Innovation Solution
A single-walled carbon nanotube separation apparatus with a partition wall and electrodes in the separation tank minimizes convection by separating metallic and semiconducting nanotubes using carrier-free electrophoresis, allowing for stable separation and higher purity through controlled voltage application and fractionation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If carrier-free electrophoresis method is used to separate metallic and semiconducting single-walled carbon nanotubes, then separation purity is improved, but convection phenomenon occurs in the separation tank causing instability
Solution Approach 1:
The separation tank is divided into an upper reservoir and a lower reservoir by a partition wall, creating distinct regions for metallic and semiconducting nanotube separation. This segmentation prevents convection by isolating the separation zones and allows stable carrier-free electrophoresis to proceed with high purity.
Solution Approach 2:
A partition wall is introduced as an intermediary structure between the upper and lower reservoirs. This partition wall acts as a barrier that prevents mixing and convection between the two reservoirs while allowing the electrophoresis separation to proceed stably in each region.
2Device complexity
If conventional separation methods are used, then separation process is simple, but convection phenomenon causes deterioration in electronic device characteristics
Solution Approach 1:
The separation tank is segmented into upper and lower reservoirs by a partition wall, creating stable, convection-free zones that preserve the integrity of separated nanotubes for electronic device applications while maintaining reasonable process complexity.
Solution Approach 2:
The partition wall serves as an intermediary that prevents convection and maintains stable separation conditions, ensuring that the separated metallic and semiconducting nanotubes retain their properties for reliable electronic device performance.
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 apparatus effectively minimizes convection in the separation tank, enabling stable and high-purity separation of metallic and semiconducting single-walled carbon nanotubes, suitable for electronic device applications.
Implementation Method 1
when a convection phenomenon occurs in a separation tank, there is a problem that single-walled carbon nanotubes are agitated and it becomes difficult to separate metallic single-walled carbon nanotubes and semiconducting single-walled carbon nanotubes
Implementation Method 2
a method of separating metallic single-walled carbon nanotubes and semiconducting single-walled carbon nanotubes has been proposed. Examples of a method of separating metallic single-walled carbon nanotubes and semiconducting single-walled carbon nanotubes include a separating method using direct current electrophoresis
Implementation Method 3
a separating method using direct current electrophoresis
Data Source
AI summary
A single-walled carbon nanotube separation apparatus includes: a separation tank accommodating a single-walled carbon nanotube dispersion liquid containing: metallic single-walled carbon nanotubes; and semiconducting single-walled carbon nanotubes; a first electrode and a second electrode that are installed in the separation tank; and a partition wall installed between the first electrode and the second electrode in the separation tank and below the separation tank in a height direction thereof.