Patent ID: 7943418
Filing Date: 2011-05-17
Classification: B82Y,H01L

Abstract:
1. A method comprising: providing a template having a top surface and a bottom surface comprising a plurality of openings extending into the template from the top surface toward the bottom surface; processing to obtain a mixture of single-walled carbon nanotubes and metallic carbon nanotubes in the openings of the template; providing a first electrode to couple to first ends of the mixture of carbon nanotubes; providing a second electrode to couple to second ends of the mixture of carbon nanotubes; forming a gate electrode on the porous structure; and applying voltages to the gate and the first and second electrode to cause a current to flow through the metallic carbon nanotubes, wherein the metallic carbon nanotubes are destroyed by the current while leaving the single-walled carbon nanotubes.