Fabrication of an anisotropic super hydrophobic/hydrophilic...

Gas separation: apparatus – Apparatus for selective diffusion of gases – Plural layers

Reexamination Certificate

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C096S012000, C096S013000, C095S045000, C210S490000, C210S500210, C210S500270, C427S490000, C427S255600, C427S535000, C427S245000

Reexamination Certificate

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07393391

ABSTRACT:
Anisotropic hydrophobic/hydrophilic nanoporous membranes and methods of forming anisotropic hydrophobic/hydrophilic nanoporous membranes are disclosed. The method of forming the nanoporous membrane includes growing a nanoporous oxide film on a substrate. A nanoporous membrane having a top side and a bottom side can then be formed by partially separating the nanoporous oxide film from the substrate. A fluorocarbon film can be deposited on the top side of the nanoporous membrane by plasma polymerization. The disclosed anisotropic hydrophobic/hydrophilic nanoporous membranes can have extremely different hydrophobicity between the top side and the bottom side of the nanoporous membrane.

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