Nanostructured surfaces having variable permeability

Details Nanostructured surfaces having variable permeability Nanostructured surfaces having variable permeability

B - Operations, Transporting

82

B

B82B 1/00 (2006.01) G05D 7/00 (2006.01)

Patent

CA 2499595

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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