TEM Micro-Grids Using Carbon Nanotube Forest Arrays
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Solution Overview
Problem
Metal mesh nets used in transmission electron microscopes contain impurities like metal oxide, which interfere with sample component analysis, reducing the accuracy of observations.
Innovation Solution
A method for manufacturing transmission electron microscope micro-grids using a sheet-shaped carbon nanotube structure secured on a support ring, eliminating the need for metal mesh nets by using adhesives, Van der Waals attractive forces, or mechanical means to secure the carbon nanotube structure, thereby reducing interference and enhancing accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal mesh nets are used as support structure, then mechanical strength is provided, but impurities like metal oxide cause interference in component analysis
Solution Approach 1:
The patent extracts and removes the harmful metal mesh net component from the system, replacing it with a carbon nanotube-based support structure. This eliminates the source of metal oxide impurities while maintaining the necessary mechanical support function through the carbon nanotube forest array
Solution Approach 2:
The patent employs composite materials by using carbon nanotubes as the primary support structure instead of traditional metal meshes. The carbon nanotube forest array provides both mechanical strength and chemical purity, combining structural integrity with resistance to impurity generation
2Ease of manufacture
If organic porous membrane is used to cover metal mesh net, then support structure is formed, but additional layers increase complexity and potential contamination
Solution Approach 1:
The patent removes the organic porous membrane layer from the structure, using only the carbon nanotube forest array as the support. This simplifies the overall structure from multiple layers to a single integrated carbon-based component, reducing both complexity and potential contamination sources
Solution Approach 2:
The carbon nanotube forest array provides localized support properties where needed, with the nanotube density and orientation optimized for specific mechanical and analytical requirements, eliminating the need for additional membrane layers
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 carbon nanotube micro-grids eliminate interference from metal mesh nets, improving the accuracy of transmission electron microscopy by providing a pure carbon support for sample analysis and allowing for contamination-free handling and production.
Implementation Method 1
using adhesives, Van der Waals attractive forces, or mechanical means to secure the carbon nanotube structure
Data Source
AI summary
A method for manufacturing a transmission electron microscope (TEM) micro-grid is provided. A support ring and a sheet-shaped carbon nanotube structure precursor are first provided. The sheet-shaped carbon nanotube structure precursor is then disposed on the support ring. The sheet-shaped carbon nanotube structure precursor is cut to form a sheet-shaped carbon nanotube structure in desired shape. The sheet-shaped carbon nanotube structure is secured on the support ring.