How could I manufacture carbon nanotubes at a realistic scale?

There are several methods for manufacturing carbon nanotubes at a realistic scale. These include:

Arc Discharge: This method involves passing an electric current through two graphite electrodes in a vacuum chamber. The resulting arc vaporizes the graphite, which then condenses into carbon nanotubes
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Laser Ablation: This method involves vaporizing graphite with a high-power laser. However, this method is not practical for making large quantities of carbon nanotubes
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Chemical Vapor Deposition (CVD): This method involves introducing a carbon-containing gas into a high-temperature chamber containing a substrate. The gas decomposes, and the carbon atoms deposit onto the substrate in the form of carbon nanotubes
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Ball Milling: This method involves milling graphite powder with a catalyst, such as iron or nickel, at high temperatures. The resulting powder is then annealed under an inert gas flow, which activates nanotube growth
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Digital Synthesis: This method involves using a computational approach to create realistically structured carbon nanotubes, enabling more accurate and impactful simulations
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MIT Researchers' Method: MIT researchers have demonstrated a method to manufacture carbon nanotube transistors in commercial facilities that fabricate silicon. The technique deposited carbon nanotubes edge to edge on a silicon wafer, which could be used to build new types of three-dimensional microprocessors
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It is important to note that each method has its advantages and disadvantages, and the choice of method will depend on the specific application and desired properties of the carbon nanotubes.

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