Thursday, February 25, 2010

US Patent 7666382 - CNT applicator liquid

Nantero is a leading company in developing techniques to incorporate carbon nanotubes into microelectronic systems. This latest patent is fundamental to an applicator liquid producing nanotube films suitable for microfabrication. Claim 1 reads:

1. An applicator liquid comprising:

one or more carbon nanotubes and an electronics-grade liquid medium comprising water,

wherein the carbon nanotubes are distributed in the liquid medium without substantial precipitation, flocculation or other macroscopic interaction and can remain separated for about at least one week,

wherein the nanotubes are at a concentration of greater than or equal to 10 mg/L,

wherein the nanotubes are pretreated to reduce a level of metal impurities to less than about 1×1018 atoms/cm3,

wherein the applicator liquid is substantially free of polymers and surfactants, and

wherein the applicator liquid is substantially free of particulates having a diameter greater than about 500 nm.