Circuit board including aligned nanostructures

Abstract

Circuit boards having a polymer substrate, a first electrode and a second electrode disposed on a surface of the polymer substrate, and at least one nanostructure electrically connected to the first and second electrodes are generally disclosed.

1 . A circuit board comprising:
 a polymer substrate;   a first electrode and a second electrode disposed on a surface of the polymer substrate; and   at least one nanostructure electrically connected to the first electrode and the second electrode,   wherein the at least one nanostructure is aligned in a longitudinal direction of a pattern formed by the at least one nanostructure.   
     
     
         2 . The circuit board of  claim 1 , wherein the polymer substrate is a flexible substrate. 
     
     
         3 . The circuit board of  claim 1 , wherein the polymer substrate is a silicon polymer substrate. 
     
     
         4 . The circuit board of  claim 1 , wherein the polymer substrate is a polydimethylsiloxane (PDMS) substrate. 
     
     
         5 . The circuit board of  claim 1 , wherein the at least one nanostructure is used as an electric line. 
     
     
         6 . The circuit board of  claim 1 , wherein the circuit board is used as a sensor. 
     
     
         7 . The circuit board of  claim 1 , wherein at least a portion of the at least one nanostructure is disposed within the polymer substrate. 
     
     
         8 . The circuit board of  claim 1 , wherein the at least one nanostructure comprises any one selected from the group consisting of a nanotube, a nanowire and a nanorod. 
     
     
         9 . The circuit board of  claim 1 , wherein a first number of the nanostructures having an angle of 45° or less with respect to the longitudinal direction is at least two times a second number of the nanostructures having an angle exceeding 45° with respect to the longitudinal direction. 
     
     
         10 . A circuit board comprising:
 a polymer substrate;   a first electrode and a second electrode disposed at least partially within the polymer substrate; and   at least one nanostructure electrically connected to the first electrode and the second electrode, wherein the at least one nanostructure is configured to adhere to charged surfaces, and wherein the at least one nanostructure is aligned in a longitudinal direction extending between the first electrode and the second electrode.   
     
     
         11 . The circuit board of  claim 10 , wherein the substrate is a flexible substrate. 
     
     
         12 . The circuit board of  claim 10 , wherein the nanostructure is configured to have electrical conductivity which changes in response to an ambient condition. 
     
     
         13 . The circuit board of  claim 10 , wherein the nanostructure comprises a metal oxide. 
     
     
         14 . The circuit board of  claim 10 , wherein the nanostructure comprises a carbon nanotube. 
     
     
         15 . The circuit board of  claim 10 , wherein a first number of the nanostructures having an angle of 45° or less with respect to the longitudinal direction is at least two times a second number of the nanostructures having an angle exceeding 45° with respect to the longitudinal direction. 
     
     
         16 . The circuit board of  claim 10 , wherein the at least one nanostructure is at least partially disposed within the polymer substrate. 
     
     
         17 . The circuit board of  claim 16 , wherein the charged surfaces comprises a polar molecular pattern. 
     
     
         18 . The circuit board of  claim 10 , wherein at least one of the first electrode and the second electrode is a multi-layer electrode. 
     
     
         19 . A circuit board comprising:
 a first electrode and a second electrode;   at least one nanostructure electrically connected to the first electrode and the second electrode, wherein the at least one nanostructure is aligned in a longitudinal direction of a pattern formed by the at least one nanostructure; and   a cured polymer substrate, wherein the first electrode, the second electrode, and the at least one nanostructure are disposed at least partially within the polymer substrate.   
     
     
         20 . The circuit board of  claim 19 , wherein a first number of the nanostructures having an angle of 45° or less with respect to the longitudinal direction is at least two times a second number of the nanostructures having an angle exceeding 45° with respect to the longitudinal direction.