Article comprising aligned nanowires and process for...

Details Article comprising aligned nanowires and process for... Article comprising aligned nanowires and process for...

H - Electricity

01

L

H01L 23/00 (2006.01) G09F 9/30 (2006.01) H01J 1/304 (2006.01) H01J 9/02 (2006.01)

Patent

CA 2322254

An improved process for fabricating emitter structures from nanowires, wherein the nanowires are coated with a magnetic material to allow useful alignment of the wires in the emitter array, and techniques are utilized to provide desirable protrusion of the aligned nanowires in the final structure. In one embodiment, nanowires at least partially coated by a magnetic material are provided, the nanowires having an average length of about 0.1 µm to about 10,000 µm. The nanowires are mixed in a liquid medium, and a magnetic field is applied to align the nanowires. The liquid medium is provided with a precursor material capable of consolidation into a solid matrix, e.g., conductive particles or a metal salt, the matrix securing the nanowires in an aligned orientation. A portion of the aligned nanowires are exposed, e.g., by etching a surface portion of the matrix material, to provide desirable nanowire tip protrusion.

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