Nanostructured surfaces having variable permeability

Details Nanostructured surfaces having variable permeability Nanostructured surfaces having variable permeability

2008-01-29

2008-01-29

Greene, Jason M. (Department: 1724)

Gas separation: processes

Selective diffusion of gases

Selective diffusion of gases through substantially solid...

C095S046000, C095S052000, C096S004000, C096S006000, C096S010000, C096S011000, C096S012000, C210S640000, C210S644000, C210S490000, C210S500210, C210S500220

Reexamination Certificate

active

07323033

ABSTRACT:
A nanostructured substrate is disclosed having a plurality of substrate openings disposed between the nanostructures on the substrate. When a desired fluid comes into contact with the substrate, at least a portion of the fluid is allowed to pass through at least one of the openings. In a first embodiment, the fluid is caused to pass through the openings by causing the fluid to penetrate the nanostructures. In a second embodiment, the substrate is a flexible substrate so that when a mechanical force is applied to the substrate, such as a bending or stretching force, the distance between nanoposts or the diameter of nanocells on the substrate increases and the liquid penetrates the nanostructures. In another embodiment, a first fluid, such as water, is prevented from penetrating the nanostructures on the substrate while a second fluid is permitted to pass through the substrate via the openings in the substrate.

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