Nanotubes

Carbon nanotubes (CNT) are extremely thin tubes made of carbon in crystalline form; the diameter of the tubes is in the nanometer range.

Single-walled carbon nanotubes (SWCNTs) have a diameter of about 0.5-2.0 nanometers, which is about 100,000 times smaller than the diameter of a human hair.

Multiwalled carbon nanotubes (MWCNTs) consist of nested single-walled carbon nanotubes in a tube-in-tube structure.

Carbon nanotubes can exhibit remarkable properties, such as
exceptional tensile strength and thermal conductivity. Most nanotubes have excellent electrical conductivity, and modified CNTs can also function as semiconductors. Carbon nanotubes can also be chemically modified.
Due to their special properties, CNTs are already used in
many areas of technology, e. g. in electronics, optics, in composite materials (as a replacement or supplement to carbon fibers) and especially to increase the conductivity in active materials of batteries or in polymers / dispersions, etc.

 
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