▎ 摘　　要

NOVELTY - Preparation of single-walled carbon nanotube comprises using a substrate adhered or suspended with double-layer graphene material, placing the double-layer graphene material in vacuum chamber, vacuum pumping at 2x 10-3 Pa, starting an electronic gun for electron beam convergence at double-layer graphene material surface, conducting electron beam lithography, controlling the direction of electron beam lithography, where irradiation is conducted for 10-60 minutes, and obtaining the product. USE - Preparation of single-walled carbon nanotube.