Patent ID: 8790744

Claim:
A method for fabricating a nanowire structure, the method comprising: providing a free-standing carbon nanotube structure used as a template; introducing at least two reacting materials into the carbon nanotube structure, wherein the introducing at least two reacting materials into the carbon nanotube structure comprises forming a first reacting material layer on a surface of the carbon nanotube structure, and forming a second reacting material layer on a surface of the first reacting material layer, wherein the total thickness of the first and second reacting material layers ranges from about 50 nanometers to about 200 nanometers; and activating the at least two reacting materials to grow the nanowire structure, wherein the activating the at least two reacting materials to grow the nanowire structure comprises laser scanning partial surface of the carbon nanotube structure so that the at least two reacting materials on the surface of the carbon nanotube structure have a diffuse reaction from a position where the laser has scanned.