Nonoscopic wired-based devices and arrays

Abstract

Electrical devices comprised of nanoscopic wires are described, along with methods of their manufacture and use. The nanoscopic wires can be nanotubes, preferably single-walled carbon nanotubes. They can be arranged in crossbar arrays using chemically patterned surfaces for direction, via chemical vapor deposition. Chemical vapor deposition also can be used to form nanotubes in arrays in the presence of directing electric fields, optionally in combination with self-assembled monolayer patterns. Bistable devices are described.

1 - 78 . (canceled) 
     
     
         79 . A method, comprising:
 providing a mixture of metallic nanotubes and semiconducting nanotubes; and   aligning the metallic nanotubes with respect to each other by subjecting the mixture to an electric field of intensity sufficient to selectively orient the metallic nanotubes with respect to each other, wherein the electric field is of an intensity such that the semiconducting nanotubes remain unoriented with respect to the electric field.   
     
     
         80 - 89 . (canceled) 
     
     
         90 . The method of  claim 79 , wherein the metallic nanowires comprise carbon nanotubes. 
     
     
         91 . The method of  claim 79 , wherein the semiconducting nanowires comprise carbon nanotubes. 
     
     
         92 . The method of  claim 79 , wherein the metallic nanowires comprise single-walled nanotubes. 
     
     
         93 . The method of  claim 79 , wherein the semiconducting nanowires comprise single-walled nanotubes.