Patent ID: 8916454

Claim:
A semiconducting single walled carbon nanotubes (SWCNTs) making method comprising: placing a single walled carbon nanotube film on a first surface of a substrate, wherein the single walled carbon nanotube film comprises a plurality of SWCNTs comprising metallic SWCNTs and semiconducting SWCNTs; applying a macromolecule material layer on the single walled carbon nanotube film to cover the single walled carbon nanotube film, wherein the macromolecule material layer, the single walled carbon nanotube film and the substrate form a compound, and the single walled carbon nanotube film is located between the substrate and the macromolecule material layer; exposing the metallic SWCNTs by melting or decomposing portions of the macromolecule material layer covering the metallic SWCNTs in an environment of electromagnetic waves to obtain a treated compound; removing the metallic SWCNTs; and removing the macromolecule material layer.