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US 9,751,765 B2Granted
Methods to superheat carbon nanotubes
AssigneeUniversity of Cincinnati
InventorsAaron Johnson, David Mast
Life of this patent
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Abstract
A method for annealing multi-walled carbon nanotubes includes applying a high-frequency electromagnetic field to the carbon nanotubes and causing the carbon nanotubes to self-heat to a temperature and for a time effective to reduce defects and reduce a number of walls in some of the carbon nanotubes.
Claims19
A method for annealing multi-walled carbon nanotubes comprising:
- applying a high-frequency electromagnetic field to the carbon nanotubes;
- and
- causing the carbon nanotubes to self-heat to a temperature and for a time effective to reduce defects and reduce a number of walls in some of the carbon nanotubes,
- wherein causing the carbon nanotubes to self-heat includes reducing the number of walls in some of the carbon nanotubes through sublimation.
1 more element
A method for annealing multi-walled carbon nanotubes comprising:
- applying a high-frequency electromagnetic field to the carbon nanotubes for a time of less than about one minute;
- and
- causing the carbon nanotubes to self-heat to a temperature and for a time effective to reduce defects and reduce a number of walls in some of the carbon nanotubes.
A method for annealing multi-walled carbon nanotubes comprising:
- applying a high-frequency electromagnetic field to the carbon nanotubes;
- and
- causing the carbon nanotubes to self-heat to a temperature of about 2800° C. to about 5000° C. and for a time effective to reduce defects and reduce a number of walls in some of the carbon nanotubes.
Dependencies are inferred from the claim text.