Tuesday, December 16, 2008

US Patent 7465494 - On insulator CNT array

US Patent 7465494

This patent from Boston College teaches enhancing the field emission properties of carbon nanotube films via density control of the nanotube arrays formed on an intermediary non-metallic (e.g. SiO2) layer. Claim 1 reads:

1. A carbon nanotube material comprising an array of substantially linear carbon nanotubes with pre-determined densities that are attached to a catalyst substrate material including a metallic conductive layer deposited on a non-metallic material and a plurality of catalytic transition metal microparticles deposited upon the metallic conductive layer, wherein individual carbon nanotubes are aligned with respect to one another within said array.