Conductive plate and film exhibiting electric anisotropy

Abstract

A method for making a conductive film exhibiting electric anisotropy comprises forming a nanomaterial on a substrate, the nanomaterial having a cluster of interconnected nanounits, each of which being substantially transverse to the substrate and having one end bonded to the substrate. The method further includes stretching the nanounits along a first direction to remove the nanomaterial from the substrate so as to form a conductive film having strings of interconnected nanounits, where the nanounits of the strings substantially extend in the first direction. A conductive plate and a method for making the same is also disclosed, where the method further comprises attaching the conductive film to a second substrate.

1 . A conductive plate, comprising:
 a substrate; and   a conductive film attached to said substrate and exhibiting electric anisotropy;   wherein said conductive film is formed by stretching a nanomaterial, which is removed from another substrate on which said nanomaterial is deposited.   
     
     
         2 . The conductive plate of  claim 1 , wherein said conductive film has the strings of interconnected nanounits, each of which extends in a first direction along which said nanomaterial is stretched. 
     
     
         3 . The conductive plate of  claim 2 , wherein said nanounits are anisotropic in shape. 
     
     
         4 . The conductive plate of  claim 2 , wherein said nanounits are carbon nanotubes, carbon nanotube bundles, or nanoparticles. 
     
     
         5 . The conductive plate of  claim 1 , wherein said conductive film is further stretched along the second direction, wherein the second direction is distinct from the first direction. 
     
     
         6 . A conductive film exhibiting electric anisotropy, comprising:
 strings of interconnected nanounits,   wherein the nanounits of the strings substantially extend in a first direction,   wherein the conductive film is stretched along a second direction, wherein the second direction is distinct from the first direction and is perpendicular to the first direction.   
     
     
         7 . A conductive film exhibiting electric anisotropy,
 wherein the conductive film is formed by:   (a) stretching a nanomaterial along a first direction in a plane of stretching to remove the nanomaterial from a first substrate so as to form a conductive film having strings of interconnected nanounits, wherein the nanounits of the strings substantially extend in the first direction; and   (b) stretching the conductive film formed in step (b) along a second direction, wherein the second direction is distinct from the first direction and is perpendicular to the first direction.   
     
     
         8 . The conductive film of  claim 7 ,
 wherein the conductive film stretched along the second direction has an enlarged area than a further conductive film,   wherein the further conductive film is formed by   stretching a nanomaterial along a first direction in a plane of stretching to remove the nanomaterial from a first substrate so as to form a conductive film having strings of interconnected nanounits, wherein the nanounits of the strings substantially extend in the first direction, but not stretching along the second direction.   
     
     
         9 . The conductive film of  claim 7 ,
 wherein the conductive film stretched along the second direction has an increased transmittance than a further conductive film, .   wherein the further conductive film is formed by   stretching a nanomaterial along a first direction in a plane of stretching to remove the nanomaterial from a first substrate so as to form a conductive film having strings of interconnected nanounits, wherein the nanounits of the strings substantially extend in the first direction, but not stretching along the second direction.