Claims
- 1-4 (cancelled)
- 5. An apparatus comprising:
a substrate; and a carbon nanotube layer deposited on the substrate, the carbon nanotube layer including a separate low work function material.
- 6. The apparatus as recited in claim 5, wherein the low work function material is deposited as a layer onto the carbon nanotube layer.
- 7. The apparatus as recited in claim 5, wherein the low work function material is doped into the carbon nanotube layer.
- 8. The apparatus as recited in claim 5, wherein the low work function material is intercalated with the carbon nanotube layer.
- 9. The apparatus as recited in claim 5, wherein the low work function material is an alkali material.
- 10-14 (cancelled)
- 15. A method for making a field emission cathode comprising the steps of
providing a substrate; depositing a carbon nanotube layer on the substrate; and inserting an alkali material into the carbon nanotube layer.
- 16. The method as recited in claim 15, wherein the inserting step further comprises the step of depositing a layer of the alkali material on the carbon nanotube layer.
- 17. The method as recited in claim 15, wherein the inserting step further comprises the step of doping the carbon nanotube layer with the alkali material.
- 18. The method as recited in claim 15, wherein the inserting step further comprises the step of:
intercalating the alkali material into the carbon nanotube layer.
- 19. A method for making a field emission cathode comprising the steps of providing a substrate;
depositing a carbon nanotube layer on the substrate; inserting an alkali material into the carbon nanotube layer; and enclosing the cathode in a low pressure gaseous environment.
- 20. The method as recited in claim 19, wherein the inserting step further comprises the step of depositing a layer of the alkali material on the carbon nanotube layer.
- 21. The method as recited in claim 19, wherein the inserting step further comprises the step of doping the carbon nanotube layer with the alkali material.
- 22. The method as recited in claim 19, wherein the inserting step further comprises the step of intercalating the alkali material into the carbon nanotube layer.
Priority Claims (1)
Number |
Date |
Country |
Kind |
PCT/US01/46674 |
Dec 2001 |
WO |
|
Parent Case Info
[0001] This application claims priority to U.S. Patent Application Ser. No. 60/254,374.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60254374 |
Dec 2000 |
US |
Divisions (1)
|
Number |
Date |
Country |
Parent |
10005989 |
Dec 2001 |
US |
Child |
10859261 |
Jun 2004 |
US |