Connectible nanotube circuit
View Patent ↗Carbon nanotube template arrays may be edited to form connections between proximate nanotubes and/or to delete undesired nanotubes or nanotube junctions.
1. A method of constructing a carbon nanotube (CNT) circuit, comprising:
creating a junction in a template structure, the template structure including:
a first array of substantially parallel CNTs;
a second array of substantially parallel CNTs at an angle to the first array; and
an intermediate layer interposed between a first selected CNT of the first array and a second selected CNT of the second array;
wherein creating a junction comprises coupling the first selected CNT and the second selected CNT.
2. The method of claim 1 , wherein the created junction exhibits a nonlinear current-voltage response.
3. The method of claim 1 , wherein the created junction exhibits a linear current-voltage response.
4. The method of claim 1 , wherein joining the first selected CNT and the second selected CNT includes selectively removing a portion of the intermediate layer.
5. The method of claim 4 , wherein selectively removing a portion of the intermediate layer comprises:
applying a first voltage to the first selected CNT; and
applying a second voltage to the second selected CNT,
wherein the first and second voltages are of levels selected to combine to remove a portion of the intermediate layer in the vicinity of the first selected CNT and the second selected CNT.
6. The method of claim 4 , wherein the intermediate layer comprises a resist composition, and wherein selectively removing a portion of the intermediate layer comprises exposing the resist composition.
7. The method of claim 6 , wherein exposing the resist composition comprises illuminating the resist composition with a pattern of electromagnetic radiation.
8. The method of claim 6 , wherein exposing the resist composition comprises illuminating the resist composition with an electron beam or ion beam.
9. The method of claim 6 , further comprising developing the resist composition.
10. The method of claim 4 , wherein selectively removing a portion of the intermediate layer comprises illuminating the intermediate layer with a pattern of electromagnetic radiation.
11. The method of claim 4 , wherein selectively removing a portion of the intermediate layer comprises illuminating the intermediate layer with an electron beam or ion beam.
12. The method of claim 1 , wherein coupling the first selected CNT and the second selected CNT comprises physically coupling.
13. The method of claim 1 , wherein coupling the first selected CNT and the second selected CNT comprises providing a preferential path for electrical energy transfer.
14. The method of claim 1 , wherein coupling the first selected CNT and the second selected CNT comprises providing a preferential path for electromagnetic interaction.
15. The method of claim 1 , wherein the first selected CNT is metallic.
16. The method of claim 15 , wherein the second selected CNT is metallic.
17. The method of claim 15 , wherein the second selected CNT is semiconducting.
18. The method of claim 1 , wherein the first selected CNT is semiconducting.
19. The method of claim 18 , wherein the second selected CNT is metallic.
20. The method of claim 18 , wherein the second selected CNT is semiconducting.
21. The method of claim 1 , further comprising measuring an electrical property of the created junction.
22. The method of claim 21 , further comprising using the measured electrical property to select an additional pair of CNTs for connection, and connecting the additional pair of CNTs.
23. The method of claim 21 , further comprising using the measured electrical property to select a CNT segment or a junction for deletion, and deleting the selected CNT segment or junction.
24. The method of claim 1 , further comprising measuring a physical property of the created junction.
25. The method of claim 24 , further comprising using the measured physical property to select an additional pair of CNTs for connection, and connecting the additional pair of CNTs.
26. The method of claim 24 , further comprising using the measured physical property to select a CNT segment or a junction for deletion, and deleting the selected CNT segment or junction.
27. The method of claim 24 , wherein the physical property of the created junction is selected from the group consisting of location, size, defect location, and chemical environment.
28. The method of claim 1 , further comprising selecting the first selected CNT and the second selected CNT, wherein selecting the first selected CNT and the second selected CNT includes predicting an electrical property of the created junction.
29. The method of claim 1 , further comprising determining atomic registration of the first selected CNT relative to the second selected CNT.
30. The method of claim 1 , further comprising determining atomic registration of the first selected CNT relative to the intermediate layer.
31. The method of claim 1 , wherein the angle is substantially a right angle.