Carbon nanotube film structure

Abstract

A carbon nanotube film structure includes at least one carbon nanotube film or at least two stacked carbon nanotube films. Each carbon nanotube film includes a plurality of carbon nanotubes parallel to the surface of the carbon nanotube film and parallel to each other. A length of the carbon nanotube is equal to or greater than 1 centimeter.

1 . A carbon nanotube film structure comprising:
 a carbon nanotube film comprising a plurality of carbon nanotubes, wherein the plurality of carbon nanotubes are parallel to a surface of the carbon nanotube film, each of the plurality of carbon nantubes is parallel to each other, a length of each of the plurality of carbon nanotubes is approximately 1 centimeter or greater.   
     
     
         2 . The carbon nanotube film structure as claimed in  claim 1 , wherein a diameter of each of the plurality of carbon nanotubes approximately ranges from 0.5 nanometers to 50 nanometers. 
     
     
         3 . The carbon nanotube film structure as claimed in  claim 1 , wherein a distance between any adjacent two of the plurality of carbon nanotubes is less than 5 micrometers. 
     
     
         4 . The carbon nanotube film structure as claimed in  claim 1 , wherein any adjacent two of the plurality of carbon nanotubes are in contact with each other and connected with each other by van der Waals attractive force therebetween. 
     
     
         5 . The carbon nanotube film structure as claimed in  claim 1 , wherein a thickness of the carbon nanotube film approximately ranges from 10 nanometers to 100 micrometers. 
     
     
         6 . The carbon nanotube film structure as claimed in  claim 1 , wherein the plurality of carbon nanotubes are selected from the group comprising of single-walled carbon nanotubes, double-walled carbon nanotubes, and multi-walled carbon nanotubes. 
     
     
         7 . The carbon nanotube film structure as claimed in  claim 1 , wherein the length of each of the plurality of carbon nanotubes is approximately 10 centimeters. 
     
     
         8 . The carbon nanotube film structure as claimed in  claim 1 , wherein the carbon nanotube film has a first side and a second side opposite to the first side, and each of the plurality of carbon nanotubes extends from the first side to the second side. 
     
     
         9 . A carbon nanotube film structure comprising:
 a first carbon nanotube film comprising a plurality of first carbon nanotubes, wherein the plurality of first carbon nanotubes are parallel to a surface of the first carbon nanotube film, each of the plurality of first carbon nanotubes is parallel to each other, and a length of each of the plurality of first carbon nanotubes is approximately 1 centimeter or greater; and   a second carbon nanotube film stacked on the first carbon nanotube film and comprising a plurality of second carbon nanotubes, wherein the plurality of second carbon nanotubes are parallel to a surface of the second carbon nanotube film, each of the plurality of second carbon nanotubes is parallel to each other, and a length of each of the plurality of second carbon nanotubes is approximately 1 centimeter or greater.   
     
     
         10 . The carbon nanotube film structure as claimed in  claim 9 , wherein the first carbon nanotube film and the second carbon nanotube film are joined to each other by van der Waals attractive force therebetween. 
     
     
         11 . The carbon nanotube film structure as claimed in  claim 9 , wherein the first carbon nanotube film has a first side and a second side opposite to the first side, and each of the plurality of first carbon nanotubes extends from the first side to the second side;
 the second carbon nanotube film has a third side and a fourth side opposite to the third side, and each of the plurality of second carbon nanotubes extends from the third side and the fourth side.   
     
     
         12 . The carbon nanotube film structure as claimed in  claim 11 , wherein an extending direction of the plurality of first carbon nanotubes and an extending direction of the plurality of second carbon nanotubes form an angle α, wherein a is between zero degree and 90 degrees, both inclusive. 
     
     
         13 . The carbon nanotube film structure as claimed in  claim 12 , wherein the angle α is greater than zero degree, and the plurality of first carbon nanotubes cross with the plurality of second carbon nanotubes to form a plurality of micropores. 
     
     
         14 . The carbon nanotube film structure as claimed in  claim 13 , wherein a diameter of each of the plurality of micropores approximately ranges from 1 micrometer to 5 micrometers. 
     
     
         15 . The carbon nanotube film structure as claimed in  claim 9 , wherein the length of each of the plurality of first carbon nanotubes is approximately 10 centimeters; the length of each of the plurality of second carbon nanotubes is approximately 10 centimeters. 
     
     
         16 . The carbon nanotube film structure as claimed in  claim 9 , wherein the carbon nanotube film structure is a free-standing structure. 
     
     
         17 . A carbon nanotube film structure comprising:
 a free-standing carbon nanotube film having a first side and a second side opposite to the first side and comprising a plurality of carbon nanotubes, wherein each of the plurality of carbon nanotubes is parallel to each other, the plurality of carbon nanotubes extend from the first side to the second side, and each of the plurality of carbon nanotubes is a single carbon nanotube and has a length in a range from about 1 centimeter to about 10 centimeters.   
     
     
         18 . The carbon nanotube film structure as claimed in  claim 17 , wherein any adjacent two of the plurality of carbon nanotubes are in contact with each other and connected with each other by van der Waals attractive force therebetween.