Carbon nanotube structure, heat dissipation sheet, and method of manufacturing carbon nanotube structure
A carbon nanotube structure includes a plurality of carbon nanotubes, and a graphite film that binds one ends of the plurality of carbon nanotubes. And a heat dissipation sheet includes a plurality of carbon nanotube structures arranged in a sheet form, wherein each of the carbon nanotube structures includes a plurality of carbon nanotubes, and a graphite film that binds one ends of the plurality of carbon nanotubes.
1. A carbon nanotube structure comprising:
a plurality of carbon nanotubes each having a first end and a second end in a longitudinal direction; and
a graphite film that binds only the first ends of the plurality of carbon nanotubes.
2. The carbon nanotube structure according to claim 1 , wherein the plurality of carbon nanotubes are fused with each other at the first ends.
3. The carbon nanotube structure according to claim 1 , wherein a thickness of the graphite film ranges from about 1 nm to about 100 nm.
4. The carbon nanotube structure according to claim 1 , wherein a length of a portion of the plurality of carbon nanotubes bound by the graphite film ranges from about 50 nm to about 500 nm.
5. A heat dissipation sheet comprising:
a plurality of carbon nanotube structures arranged in a sheet form,
wherein each of the carbon nanotube structures includes:
a plurality of carbon nanotubes each having a first end and a second end in a longitudinal direction; and
a graphite film that binds only the first ends of the plurality of carbon nanotubes.
6. The heat dissipation sheet according to claim 5 , wherein the plurality of carbon nanotubes are fused with each other at the first ends.
7. The heat dissipation sheet according to claim 5 , wherein a thickness of the graphite film ranges from about 1 nm to about 100 nm.
8. The heat dissipation sheet according to claim 5 , wherein a length of a portion of the plurality of carbon nanotubes bound by the graphite film ranges from about 50 nm to about 500 nm.
9. A method of manufacturing a carbon nanotube structure, the method comprising:
providing a plurality of carbon nanotubes each having a first end and a second end in a longitudinal direction; and
forming a graphite film that binds only the first ends of the plurality of carbon nanotubes by irradiating the first ends with an electron beam or a laser light.
10. The method according to claim 9 , further comprising:
arranging a resin sheet at the first ends before irradiating the one ends with the electron beam or the laser light.