Method of selecting structure of carbon nanotube through photoirradiation
AssigneesJapan Science and Technology Agency, NEC Corporation
InventorsSumio Iijima, Masako Yudasaka, Minfang Zhang
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Abstract
A method for selectively obtaining carbon nanotubes having specific structures by selectively obtaining carbon nanotubes having structures different from the structures of the carbon nanotubes to be vanished by irradiating carbon nanotubes with a light beam of single wavelength so as to have carbon nanotubes in specific electron states in the excited states, and oxidizing and combusting the carbon nanotubes in the excited states by an oxygen or an oxidizing agent so as to vanish the same.
Claims12
A method for selecting single-walled carbon nanotubes of 1.2 nm diameter from a mixture of single-walled carbon nanotubes of various diameters, comprising irradiating the mixture of single-walled carbon nanotubes of various diameters with a light beam of a single wavelength of 620 nm under an oxidative environment to obtain single-walled carbon nanotubes of 1.2 nm diameter.
A method for removing single-walled carbon nanotubes of 0.96 nm and 1.0 nm diameters from a mixture of single-walled carbon nanotubes of various diameters, comprising irradiating the mixture of single-walled carbon nanotubes of various diameters with a light beam of a single wavelength of 420 nm under an oxidative environment to remove single-walled carbon nanotubes of 0.96 nm and 1.0 nm diameters.
A method for removing single-walled carbon nanotubes of 1.0 nm and 1.1 nm diameters from a mixture of single-walled carbon nanotubes of various diameters, comprising irradiating the mixture of single-walled carbon nanotubes of various diameters with a light beam of a single wavelength of 500 nm under an oxidative environment to remove single-walled carbon nanotubes of 1.0 nm and 1.1 nm diameters.
A method for removing single-walled carbon nanotubes of 0.96 nm, 1.0 nm and 1.1 nm diameters from a mixture of single-walled carbon nanotubes of various diameters, comprising irradiating the mixture of single-walled carbon nanotubes of various diameters with a light beam of a single wavelength of 620 nm under an oxidative environment to remove single-walled carbon nanotubes of 0.96 nm, 1.0 nm and 1.1 nm diameters.
Dependencies are inferred from the claim text.