Separation of carbon nanotubes using magnetic particles
AssigneeEmpire Technology Development LLC
InventorSeth Adrian Miller
Life of this patent
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Abstract
The present disclosure generally describes techniques for separating semiconducting carbon nanotubes from metallic carbon nanotubes in a carbon nanotube dispersion. The semiconducting carbon nanotubes and metallic carbon nanotubes may be provided and dispersed in a fluid. Once the semiconducting carbon nanotubes attach to the amine-coated magnetic particles, a magnetic field may be applied to the amine coated magnetic particles and attached semiconducting carbon nanotubes to attract and hold at least a portion of the semiconducting carbon nanotubes, so that the semiconducting carbon nanotubes may be separated from the fluid and/or metallic carbon nanotubes.
Claims15
A method for separating carbon nanotubes, comprising:
- providing metallic and semiconducting carbon-nanotubes that are dispersed in a fluid thereof;
- providing amine-coated magnetic particles to the fluid so that at least a portion of the semiconducting carbon-nanotubes are attached thereto;
- applying a magnetic field to draw the amine-coated magnetic particles and attached semiconducting carbon-nanotubes away from the metallic carbon-nanotubes;
- separating the amine-coated magnetic particles and attached semiconducting carbon-nanotubes from the metallic carbon-nanotubes;
- and
- treating the amine-coated magnetic particles and attached semiconducting carbon-nanotubes with an acid to detach the amine-coated magnetic articles from the semiconducting carbon-nanotubes.
A method for separating carbon nanotubes comprising:
- providing metallic and semiconducting carbon-nanotubes that are dispersed in a fluid thereof;
- providing amine-coated magnetic particles to the fluid so that at least a portion of the semiconducting carbon-nanotubes are attached thereto;
- applying a magnetic field to draw the amine-coated magnetic particles and attached semiconducting carbon-nanotubes away from the metallic carbon-nanotubes, wherein the magnetic field is applied using a magnet to hold the amine-coated magnetic particles and attached semiconducting carbon-nanotubes in place, while the fluid and metallic carbon-nanotubes are separated from the amine-coated magnetic particles and attached semiconducting carbon-nanotubes.
A computer-readable medium comprising computer readable instructions which are provided for separating carbon nanotubes wherein, when a processing arrangement executes the instructions, the processing arrangement is configured for:
- providing metallic and semiconducting carbon-nanotubes that are dispersed in a fluid thereof;
- providing amine-coated magnetic particles to the fluid so that at least a portion of the semiconducting carbon-nanotubes are attached thereto;
- applying a magnetic field to draw the amine-coated magnetic particles and attached semiconducting carbon-nanotubes away from the metallic carbon-nanotubes;
- separating the amine-coated magnetic particles and attached semiconducting carbon-nanotubes from the metallic carbon-nanotubes:
- and
- treating the amine-coated magnetic particles and. attached semiconducting carbon-nanotubes with an acid to detach the amine-coated magnetic particles from the semiconducting carbon-nanotubes.
Dependencies are inferred from the claim text.