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US 7,465,494 B2Granted
Density controlled carbon nanotube array electrodes
AssigneeThe Trustees of Boston College
InventorsZhifeng F. Ren, Yi Tu
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AssigneeThe Trustees of Boston College
InventorsZhifeng F. Ren, Yi Tu
Estimating the term…
CNT materials comprising aligned carbon nanotubes (CNTs) with pre-determined site densities, catalyst substrate materials for obtaining them and methods for forming aligned CNTs with controllable densities on such catalyst substrate materials are described. The fabrication of films comprising site-density controlled vertically aligned CNT arrays of the invention with variable field emission characteristics, whereby the field emission properties of the films are controlled by independently varying the length of CNTs in the aligned array within the film or by independently varying inter-tubule spacing of the CNTs within the array (site density) are disclosed. The fabrication of microelectrode arrays (MEAs) formed utilizing the carbon nanotube material of the invention is also described.
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.
A method of forming a carbon nanotube material comprising:
A carbon nanotube material comprising a plurality of individual carbon nanotubes engaged to a catalyst substrate material including a metallic conductive layer, a non-metallic material and a plurality of catalytic transition metal microparticles deposited upon the metallic conductive layer, wherein the carbon nanotubes are substantially linear and aligned with pre-determined densities.
A carbon nanotube material comprising a plurality of individual carbon nanotubes engaged to a catalyst substrate material including a metallic conductive layer, a non-metallic material and plurality of catalytic transition metal microparticles deposited upon the metallic conductive layer, wherein the carbon nanotubes are substantially liner with pre-determined densities.
Dependencies are inferred from the claim text.