Field emission devices using ion bombarded carbon nanotubes
AssigneeHyperion Catalysis International, Inc.
InventorMikio Takai
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Abstract
The present invention relates to a field emission device comprising an anode and a cathode, wherein said cathode includes carbon nanotubes which have been treated with an ion beam. The ion beam may be any ions, including gallium, hydrogen, helium, argon, carbon, oxygen, and xenon ions. The present invention also relates to a field emission cathode comprising carbon nanotubes, wherein the nanotubes have been treated with an ion beam. A method for treating the carbon nanotubes and for creating a field emission cathode is also disclosed. A field emission display device containing carbon nanotube which have been treated with an ion beam is further disclosed.
Claims13
1-7. (canceled)
A process for treating carbon nanotubes comprising the step of bombarding carbon nanotubes with ions.
12-19. (canceled)
A method for making a field emission cathode comprising the steps of:
- dispersing carbon nanotubes into a liquid vehicle to form a solution;
- forming an electrophoresis bath, said bath including an anode and a cathode immersed therein;
- applying a voltage to said anode and said cathode, thereby causing said carbon nanotubes to deposit onto said cathode;
- removing said cathode from said bath;
- heating said cathode;
- and
- bombarding said cathode with ions.
Dependencies are inferred from the claim text.